How to put sprocket back on balance shaft

?
oil balance shaft? it is called the BSM


yes , RTM read the service manual,

https://eautorepair.net/Marketing/Default.asp

the 2 cams are set using a tool called locking wedge.
4 marks aligned 2 cam sprockets per the manual./

BSM WORDS ,INSTALL

There are two different Balance Shaft Module (BSM) to engine block bolts used. 180 mm bolts with a lock-patch on the threads or 185 mm bolts without lock-patch. Do not reuse the 180 mm bolts. Always discard 180 mm bolts after removing. Failure to replace these bolts can result in engine damage. The 185 mm bolts are reusable. Install the same length bolts that were removed and use either four new 180 mm bolts or four 185 mm bolts.
If chain was removed, align marks on crankshaft sprocket (2) and chain (1).
Align marks on crankshaft sprocket (2) and chain (1)

1. Align marks on oil pump sprocket (5) and chain (4).
2. Install chain on sprocket.
3. Pivot BSM assembly upwards and position on ladder frame.
4. Start BSM mounting bolts by hand.
5. Use a three step procedure when tightening BSM mounting bolts.
6. Tighten new 180 mm BSM mounting bolts as follows:
   
   1. Tighten to 11 ft. lbs. (15 Nm) in the sequence shown.
   2. Tighten to 24 ft. lbs. (33 Nm) in the sequence shown.
   3. Rotate bolts an additional 90° in the sequence shown.
7. Tighten 185 mm BSM mounting bolts as follows:
   
   1. Tighten to 11 ft. lbs. (15 Nm) in the sequence shown.
   2. Tighten to 22 ft. lbs. (29 Nm) in the sequence shown.
   3. Rotate bolts an additional 90° in the sequence shown.Remove tensioner pin 9703 (4).
      Remove tensioner pin 9703 (4)
      
      1. nstall oil pan.
      2. Fill with oil.
      3. Start engine and check for leaks.
      READ THE MANUAL PAY $20 LIKE ME.

2.2L & 2.3L Engines
Except S2000 with 2.2L Engine

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove the cylinder head (valve) and upper timing belt covers.
3. Turn the engine to align the timing marks and set cylinder No. 1 to Top Dead Center (TDC). The white mark on the crankshaft sprocket should align with the pointer on the timing belt cover. The words UP embossed on the camshaft sprocket should be aligned in the upward position. The marks on the edge of the sprocket should be aligned with the cylinder head or the back cover upper edge. Once in this position, the engine must NOT be turned or disturbed.
4. Remove all necessary components for access to the lower timing belt cover, then remove the cover.
5. There are two belts in this system; the one running to the camshaft sprocket is the timing belt. The other, shorter one drives the balance shaft and is referred to as the balancer shaft belt or timing balancer belt. Lock the timing belt adjuster in position, by installing one of the lower timing belt cover bolts to the adjuster arm.
6. Loosen the timing belt and balancer shafts tensioner adjuster nut, do not loosen the nut more than one turn. Push the tensioner for the balancer belt away from the belt to relieve the tension. Hold the tensioner and tighten the adjusting nut to hold the tensioner in place.
7. Carefully remove the balancer belt. Do not crimp or bend the belt; protect it from contact with oil or coolant.
8. Remove the balancer belt sprocket from the crankshaft.
9. Loosen the lockbolt installed to the timing belt adjuster and loosen the adjusting nut. Push the timing belt adjuster to remove the tension on the timing belt, then tighten the adjuster nut.
10. Remove the timing belt by sliding it off the sprockets. Do not crimp or bend the belt; protect it from contact with oil or coolant.
11. If defective, remove the belt tensioners by performing the following:
    1. Remove the springs from the balancer belt and the timing belt tensioners.
    2. Remove the adjusting nut from the belt tensioners.
    3. Remove the bolt from the balancer belt adjuster lever, and then remove the lever and the tensioner pulley.
    4. Remove the lockbolt from the timing belt tensioner lever, then remove the tensioner pulley and lever from the engine.
12. This is an excellent time to check or replace the water pump. Even if the timing belt is only being replaced as part of a good maintenance schedule, consider replacing the pump at the same time.
13. To install:
14. 1. If the water pump is to be replaced, install a new O-ring and make certain it is properly seated. Install the water pump and tighten the mounting bolts to 106 inch lbs. (12 Nm).
    2. If the tensioners were removed, perform the following procedures:
       1. Install the timing belt tensioner lever and the tensioner pulley.
       2. Install the balancer belt pulley and adjuster lever.
       3. Install the adjusting nut and the bolt to the balancer belt adjuster lever.
       4. Install the springs to the tensioners.
       5. Install the lockbolt to the timing belt tensioner, then move it its full deflection and tighten the lockbolt.
       6. Move the balancer it's full deflection and tighten the adjusting nut to hold its position.
    3. The pointer on the crankshaft sprocket should be aligned with the pointer on the oil pump; the camshaft sprocket must be aligned so that the wordUP is at the top of the sprocket and the marks on the edge of the sprocket are aligned with the surfaces of the head or the back cover upper edge.
    4. Install the timing belt on the sprockets in the following sequence: crankshaft sprocket, tensioner sprocket, water pump sprocket and camshaft sprocket.
    5. Check the timing marks to be sure that they did not move.
    6. Loosen, then retighten the timing belt adjusting nut; this will apply the proper amount of tension to the timing belt.
    7. Install the timing balancer belt drive sprocket and the lower timing belt cover.
    8. Install the crankshaft pulley and bolt, tighten the bolt to 181 ft. lbs. (245 Nm). Rotate the crankshaft sprocket 5-6 turns to position the timing belt on the sprockets.
    9. Set the No. 1 cylinder to TDC and loosen the timing belt adjusting nut one turn. Turn the crankshaft counterclockwise until the cam sprocket has moved 3 teeth; this creates tension on the timing belt.
    10. Tighten the timing belt adjusting nut.
    11. Set the crankshaft sprocket and the camshaft sprocket to TDC. If the sprockets do not align, remove the belt to realign the marks, then install the belt.
    12. Remove the crankshaft pulley and the lower cover.
    13. With the timing marks aligned, lock the timing belt adjuster in place with one of the lower cover mounting bolts.
    14. Loosen the adjusting nut and ensure the timing balancer belt adjuster moves freely.
    15. Align the rear timing balancer sprocket using a 6 x 100mm bolt or rod. Mark the bolt or rod at a point 2.9 in. (74mm) from the end. Remove the bolt from the maintenance hole on the side of the block; insert the bolt/rod into the hole and align the 2.9 in. (74mm) mark with the face of the hole. This will hold the shaft in place during installation.
    16. Align the groove on the front balancer shaft sprocket with the pointer on the oil pump.
    17. Install the balancer belt. Once the belts are in place, be sure that all the engine alignment marks are still correct. If not, remove the belts, realign the engine and reinstall the belts. Once the belts are properly installed, slowly loosen the adjusting nut, allowing the tensioner to move against the belt. Remove the bolt from the maintenance hole and reinstall the bolt and washer.
    18. Install the crankshaft pulley, then turn the crankshaft sprocket 1 turn counterclockwise and tighten the timing belt adjusting nut to 33 ft. lbs. (45 Nm).
    19. Remove the crankshaft pulley and the bolt locking the timing belt adjuster in place.
    20. Install the lower and upper timing belt covers, and all applicable components. When installing the crankshaft pulley, coat the threads and seating face of the pulley bolt with engine oil, then install and tighten the bolt to 181 ft. lbs. (250 Nm).
    21. Install the cylinder head cover gasket cover to the groove of the cylinder head cover. Before installing the gasket thoroughly clean the seal and the groove. Seat the recesses for the camshaft first, then work it into the groove around the outside edges. Be sure the gasket is seated securely in the corners of the recesses.
    22. Apply liquid gasket to the four corners of the recesses of the cylinder head cover gasket. Do not install the parts if 5 minutes or more have elapsed since applying liquid gasket. After assembly, wait at least 20 minutes before filling the engine with oil.
    23. Install the cylinder head (valve) cover and all other applicable components.

place no 1 piston at TDC compression stroke. There are procedures for the timing of the balance shafts but if it is only the timing chain I will go to that
Align uniquely coloured chain link with intake camshaft sprocket timing mark-- INT--. ( this will be pointing at the 2 o'clock position)
install timing chain and sprocket as an assembly
align first matching coloured chain link crankshaft timing mark (5 o'clock position)
align the second matching coloured chain link with exhaust cam shaft timing mark--EXH ( at the 11 o'clock position
There is a special procedure to reset the balance tensioner and it is different to the timing chain procedure.

To reset cam shaft timing chain tensioner push piston fully and turn clockwise until locked
Once the tensioner has been compressed ensure the distance from end to end is 2.83 inches . If not repeat the resetting process
vehicles 30.000 miles the tensioner is released when the engine is first started . In vehicles over 30.000 miles manually release tensioner by tapping the plunger
Note cam shaft and crank shaft sprockets bolts MUST only be used once. If you want details on the balancer chain procedure then make a comment in the box
use tension wrench and a degree gauge
cam bolts are tensioned to 63 ft lbs + 30 degrees
crank shaft pulley is tensioned to 74 ft lbs + 75 degrees

5.0L and 5.7L Engines To Remove:

1. Remove the crankshaft balancer.
2. Drain the cooling system.
3. Remove the water pump.
4. Drain the engine oil.
5. Remove all engine oil pan fasteners except two nuts at rear of engine.
6. Separate the engine oil pan from the front cover.
7. Disconnect the crankshaft position (CKP) sensor wire.
   
   
8. Remove engine front cover.
   
   
9. Pry the oil seal from the front cover.
10. Inspect the front cover seal area and crankshaft balancer seal area for damage.
    
    
11. Rotate the crankshaft until the timing marks on the crankshaft and the camshaft sprockets are aligned.
12. Remove the crankshaft position sensor reluctor ring.
    
    NOTE: Free play on the slack side of the camshaft timing chain must measure less than 0.43 inch (11Mm) or timing chain and sprockets must be replaced.
    
13. Remove the camshaft sprocket bolts.
14. Remove the camshaft sprocket.
15. Remove the camshaft timing chain. NOTE: Do not turn the crankshaft assembly after the timing chain has been removed in order to prevent damage to the piston assemblies or the valves.
    
    
    
16. Remove the crankshaft sprocket using J 5825-A.
17. Remove the crankshaft balancer woodruff keys (if required).

To Install:

1. Install the crankshaft balancer woodruff keys into the crankshaft.
2. Align the crankshaft sprocket keyway with the crankshaft balancer woodruff key. WARNING
   Wear eye protection when installing crankshaft sprocket.
   
   
   
3. Use J 5590 to install crankshaft sprocket.
4. Install the camshaft sprocket and camshaft timing chain.
   
   
5. Ensure that the crankshaft sprocket alignment mark is in the 12 o'clock position and the camshaft sprocket alignment mark is at the 6 o'clock position.
6. Install the camshaft sprocket bolts and tighten the camshaft sprocket bolts;
   • Torque to: 18 ft. lbs. (25 Nm)
7. Install the crankshaft position sensor reluctor ring until completely seated against crankshaft sprocket. NOTE: The composite type engine front cover and seal must not be reused. Always install a new engine cover with a new seal.
   
8. Install new engine front cover and bolts.
   • Torque bolts to: 106 in. lbs. (12 Nm)
9. Clean sealer from corners of oil pan gasket where it meets the engine front cover.
   
   
10. Apply a 0.196 in (5 mm) bead of adhesive, GM P/N 12346141 or equivalent, 1.0 in (25 mm) long to the engine front cover to engine block junction.
11. Install oil pan bolts.
    • Torque bolts to: 106 in. lbs. (12 Nm)
12. Tighten oil pan nuts.
    • Torque bolts to: 18 ft. lbs. (25 Nm)
13. Connect the crankshaft position sensor wire.
14. Install the water pump.
15. Install the crankshaft balancer.
16. Fill the engine to the proper level with oil.
17. Fill the engine to the proper level with coolant.
18. Test drive the vehicle to confirm the repairs.

To Install:

1. Install balance shaft drive gear onto the left camshaft.
2. Install the camshaft sprockets and new bolts finger tight.
3. Using a vise, compress the timing chain tensioner plunger.

4. Install a retaining clip on the tensioner to hold plunger IN during installation.
   marking timing chain
   

5. If timing chain copper links are not visible, mark 2 links on one end and 1 link on the other end to be used as timing marks.
6. Install right and left timing chain guides. Tighten bolts to 89 in-lbs (10 Nm).
7. Rotate the left camshaft until the timing mark is at the 12 o'clock position.
8. Rotate the right camshaft until the timing mark is at the 11 o'clock position.

9. Position the crankshaft using the special tool. Then remove the tool.
   Crankshaft special tool positioning
   

10. Install the crankshaft sprocket with flange facing forward.
    Crankshaft sprocket timing mark
    

11. Position lower end of left (inner) timing chain on the crankshaft sprocket. Align the copper (or marked) chain link with the timing mark on the outer flange of the crankshaft pulley. NOTE: Upper half of timing chain must be below the tensioner arm dowel.
    

12. Position the left timing chain on the camshaft sprocket. The timing mark on the camshaft sprocket must be aligned between the 2 copper (or marked) chain links.
    Left camshaft sprocket timing mark
    

13. Place the left timing chain tensioner arm on the dowel pin and install the timing chain tensioner and bolts. Tighten bolts to 18 ft-lbs (25 Nm). NOTE: Lower half of timing chain must be above the tensioner arm dowel.
    Crankshaft sprocket timing mark
    

14. Position lower end of right (outer) timing chain on the crankshaft sprocket. Align the copper (or marked) chain link with the timing mark on the outer flange of the crankshaft pulley.
    Right camshaft sprocket timing mark
    

15. Position the right timing chain on the camshaft sprocket. The timing mark on the camshaft sprocket must be aligned between the 2 copper (or marked) chain links.
16. Place the right timing chain tensioner arm on the dowel pin and install the timing chain tensioner and bolts. Tighten bolts to 18 ft-lbs (25 Nm).
17. Remove the retaining clips from the right and left timing chain tensioners.
18. Verify alignment of all timing marks.
19. Install crankshaft sensor ring on crankshaft.
20. Locate index mark on balance shaft and mark corresponding gear tooth with chalk.
21. Position balance shaft on journals. NOTE: It may be helpful to use an inspection mirror to view the marks timing marks.
    

22. Align the chalk mark on the balance shaft with the camshaft timing mark.
    Balance shaft bearing caps
    

23. Install the balance shaft bearing caps in their original locations. Follow the tightening sequence as shown in the illustration. Tighten bolts to 89 in-lbs (10 Nm).
24. Tighten the camshaft phaser sprocket bolts in the correct sequence using 2 steps, as follows:
    • Step 1-30 ft-lbs (40 Nm)
    • Step 2-tighten an additional 90 degrees
25. Position the crankshaft keyway in the 11 o'clock position.
26. Lubricate and install all camshaft roller followers. WARNING
    Engine front cover replacement procedure must be completed within 4 minutes or entire procedure must be repeated. Failure to do so may result in future leaks
    

see diagrams from autozone.com. Cam sprocket has an "UP" label, but also 2 scribes on the sides to align to upper head surface. The critical part of the job is keeping tension on the side of the belt that is opposite from the tensioner as the tensioner is released onto the belt. The timing marks must be aligned when the job is done.


To install:

1. Install the camshaft timing sprocket so that the UP mark is up and the TDC marks are parallel to the cylinder head gasket surface. Install the key and tighten the bolt to 27 ft. lbs. (37 Nm).
2. Install the crankshaft sprocket so that the TDC mark aligns with the pointer on the oil pump. Install the spacers with their concave surfaces facing in. Install the key. If equipped, install the TDC sensor assembly back into position before installing the timing belt.
3. Install and tension the timing belt. Use a 6 x 1.0 mm x 25 mm bolt threaded through the cam belt tensioner plate to temporarily hold the tensioner.
4. Temporarily install the crankshaft pulley and rotate the crankshaft counterclockwise 5-6 turns to be sure the belt is properly seated.
5. Set the No. 1 piston at TDC for its compression stroke.

WARNING If any binding is felt when adjusting the timing belt tension by turning the crankshaft, STOP turning the engine, because the pistons may be hitting the valves.

1. Rotate the crankshaft counterclockwise so that the camshaft pulley moves only 3 teeth beyond its TDC mark.
2. Loosen, then retighten the temporary cam belt tensioner bolt.
3. If the rear balance shaft sprocket/gear case assembly was removed, perform the following:
   1. If the rear balance shaft was moved, rotate the balance shaft until the 6 x 1.0mm x 100 mm bolt can be installed into the maintenance hole to the scribed line.
   2. Align the notch of the balance shaft sprocket edge with the pointer on the gear case. Install the rear balance shaft sprocket/gear case assembly using a new O-ring coated with fresh engine oil. The balance shaft sprocket should be installed in the TDC position. The pointer on the gear should align with the pointer on the oil pump housing plate.
   3. Tighten the mounting bolts to 18 ft. lbs. (25 Nm).
   
   
4. If the front balance shaft sprocket was removed, perform the following:
   1. Install a suitable and sturdy screw driver or drift through the maintenance hole in the shaft behind the sprocket to hold the front balance shaft.
   2. Install the front balance shaft sprocket and mounting nut. Torque the nut to 22 ft. lbs. (29 Nm).
   
   
5. Make sure the balance shafts and crankshaft are in the TDC position.
6. Remove the crankshaft pulley, and if removed, install the balance shaft belt drive sprocket.
7. Install the balance shaft belt, making sure the balance shafts and sprockets are still in the TDC position.
8. If removed, install the balance shaft belt tensioner and tension the balance shaft belt.
9. Loosen, then retighten the tensioner adjusting nut to 33 ft. lbs. (45 Nm).
10. Remove the 6 x 1.0mm x 100mm rear balance shaft holding bolt.
11. Temporarily install the crankshaft pulley and rotate the crankshaft 2 revolutions counterclockwise, stopping at TDC.

WARNING If any resistance is felt, stop immediately and determine the cause.

1. Recheck that all of the TDC marks align for both the camshaft and balance shafts.
2. Loosen, then retighten the tensioner adjusting nut to 33 ft. lbs. (45 Nm).
3. Remove the 6 x 1.0 mm x 25 mm bolt used to secure the camshaft timing belt tensioner.
4. Remove the crankshaft pulley and install the lower cover.
5. Install the crankshaft pulley, lubricate the bolt threads and both sides of the crankshaft pulley bolt with fresh engine oil and tighten the crankshaft pulley bolt to 181 ft. lbs. (245 Nm). Do Not use an impact wrench.

See Figures 19 and 20

Fig. Fig. 19: Holding the rear timing balancer shaft-4-cylinder Odyssey

Fig. Fig. 20: Aligning the front timing balancer shaft-4-cylinder Odyssey

1. Install the upper timing cover and the valve cover. Be sure the seals are properly seated.
2. Install the side engine mount. Tighten the through-bolt to 47 ft. lbs. (64 Nm). Tighten the mount nut and bolt to 40 ft. lbs. (55 Nm) each.
3. Remove the floor jack.
4. Install and tension the alternator belt.
5. Install the power steering pump and tension its belt.
6. Install the splash shields.
7. Reconnect the positive and negative battery cables. Enter the radio security code.
8. Check engine operation.

REMOVAL & INSTALLATION 1.8L Engine

1. If possible, position the engine so the No. 1 piston is at TDC.
2. Disconnect the negative battery cable.
3. Remove the timing belt covers.
4. Remove the timing (outer) belt tensioner and remove the outer timing belt.
5. Remove the outer crankshaft sprocket and flange.
6. Remove the silent shaft (inner) belt tensioner and remove the belt. Fig. 1: Silent shaft belt timing marks — 1.8L engine
   Fig. 2: Checking the silent shafts for proper positioning
   Fig. 3: Timing belt timing mark alignment — 1.8L engine
   To install:
   
7. Align the timing marks of the silent shaft sprockets and the crankshaft sprocket with the timing marks on the front case. Wrap the timing belt around the sprockets so there is no slack in the upper span of the belt and the timing marks are still aligned.
8. Install the tensioner pulley and move the pulley by hand so the long side of the belt deflects about 1⁄4 in.
9. Hold the pulley tightly so the pulley cannot rotate when the bolt is tigthened. Tighten the bolt to 15 ft. lbs. (20 Nm) and recheck the deflection amount.
10. Install the timing belt tensioner fully toward the water pump and tighten the bolts. Place the upper end of the spring against the water pump body.
11. Align the timing marks of the camshaft, crankshaft and oil pump sprockets with their corresponding marks on the front case or rear cover. NOTE: There is a possibility to align all timing marks and have the oil pump sprocket and silent shaft out of time, causing an engine vibration during operation. If the following step is not followed exactly, there is a 50 percent chance that the silent shaft alignment will be 180 degrees off.
    
12. Before installing the timing belt, ensure that the left side (rear) silent shaft (oil pump sprocket) is in the correct position as follows:
    1. Remove the plug from the rear side of the block and insert a tool with shaft diameter of 0.31 in. (8mm) into the hole.
    2. With the timing marks still aligned, the shaft of the tool must be able to go in at least 2 1/2 in. If the tool can only go in about 1 in., the shaft is not in the correct orientation and will cause a vibration during engine operation. Remove the tool from the hole and turn the oil pump sprocket 1 complete revolution. Realign the timing marks and insert the tool. The shaft of the tool must go in at least 2 1/3 in.
    3. Recheck and realign the timing mark.
    4. Leave the tool in place to hold the silent shaft while continuing.
13. Install the belt to the crankshaft sprocket, oil pump sprocket, then camshaft sprocket, in that order. While doing so, make sure there is no slack between the sprocket except where the tensioner is installed.
14. Recheck the timing marks' alignment. If all are aligned, loosen the tensioner mounting bolt and allow the tensioner to apply tension to the belt.
15. Remove the tool that is holding the silent shaft and rotate the crankshaft a distance equal to 2 teeth on the camshaft sprocket. This will allow the tensioner to automatically apply the proper tension on the belt. Do not manually overtigthen the belt or it will howl.
16. Tigthen the lower mounting bolt first, then the upper spacer bolt.
17. To verify correct belt tension, check that the deflection at the longest span of the belt is about 1⁄2 in.
18. Install the timing belt covers and all related items.
19. Connect the negative battery cable.

Dear Friend
Removal: Support engine: remove -engine mounting, auxiliary drive belt, water pump pulley, crankshaft pully bots & crankshaft pully, timing belt covers....turn crankshaft to TDC on No 1 cylinder, ensure crankshaft sprocket, camshaft sprocket, oil pump sprocket & balancer shaft sprocket timing marks lighned. Pls note: Timing marks on camshaft sprockets should align with cylinder head uppter face, dowl pins on camshaft sprockets should face downwards....Slacken tensioner botl. Move tensioner away from belt & tighten bolt.
Remove: automatic tensioner unit bolts, automatic tensioner unit, timing belt, crankshaft bolt, crankshaft sprocket, crankshaft sprocket guide washer...slacken balancer shaft belt rensioner bolt, move tensioner away from belt & lightly tighten bolt...Remove balancer shaft belt.

Installation:
ensure timeing marks aligned.Note: Timing marks on camshaft sprockets ahould align with cylinder head upper face, exhaust sprocket mark is on recess but inlet sprocket mark is on tooth. To check oil pump sprocket positionded sorrectly: remove blanking plug from cylinder block, insert 8mm diameter Phillips screwdriver in hole. ensure screwdriver is inserded 60mm from face of cylinder block. If screwdriveer can only be inserted 20mm-turn oil pump sprocket 360". Inset screwdiver again.
Fit balancer shaft delt in anti-clockwise direction starting at crandkshaft sprocket....Slacken balancer shaft belt tensioner notl, turn tensioner clockwise to tension belt. Tighten bolt to 15-22 Nm... Applu thump pressure to belt at tentioner, belt should deflect 5-7mm. If not: Repeat tensioning procedure.... Install - chankshaft sprocket guide washer & crankshaft sprocket.
Thighten crankshaft centre bolt, tightening torque:110-130Nm. Please note, ensure crankshaft sprocket guide washer is fittet correctly. oil threads & contact face crankshaft botl before fitting.

It is recommended that the timing belt be replaced periodically to assure correct engine performance. Because of their composition, timing belts wear over a period of time and mileage. To avoid vehicle break down and possible engine damage, the manufacturer recommends timing belt replacement at 60,000 miles.
REMOVAL & INSTALLATION1.8L Engine
See Figures 1, 2 and 3

1. If possible, position the engine so the No. 1 piston is at TDC.
2. Disconnect the negative battery cable.
3. Remove the timing belt covers.
4. Remove the timing (outer) belt tensioner and remove the outer timing belt.
5. Remove the outer crankshaft sprocket and flange.
6. Remove the silent shaft (inner) belt tensioner and remove the belt.

Fig. 1: Silent shaft belt timing marks-1.8L engine



Fig. 2: Checking the silent shafts for proper positioning



Fig. 3: Timing belt timing mark alignment-1.8L engine

To install:

1. Align the timing marks of the silent shaft sprockets and the crankshaft sprocket with the timing marks on the front case. Wrap the timing belt around the sprockets so there is no slack in the upper span of the belt and the timing marks are still aligned.
2. Install the tensioner pulley and move the pulley by hand so the long side of the belt deflects about 1 / 4 in.
3. Hold the pulley tightly so the pulley cannot rotate when the bolt is tigthened. Tighten the bolt to 15 ft. lbs. (20 Nm) and recheck the deflection amount.
4. Install the timing belt tensioner fully toward the water pump and tighten the bolts. Place the upper end of the spring against the water pump body.
5. Align the timing marks of the camshaft, crankshaft and oil pump sprockets with their corresponding marks on the front case or rear cover.

There is a possibility to align all timing marks and have the oil pump sprocket and silent shaft out of time, causing an engine vibration during operation. If the following step is not followed exactly, there is a 50 percent chance that the silent shaft alignment will be 180 degrees off.

1. Before installing the timing belt, ensure that the left side (rear) silent shaft (oil pump sprocket) is in the correct position as follows:
   1. Remove the plug from the rear side of the block and insert a tool with shaft diameter of 0.31 in. (8mm) into the hole.
   2. With the timing marks still aligned, the shaft of the tool must be able to go in at least 2 1/2 in. If the tool can only go in about 1 in., the shaft is not in the correct orientation and will cause a vibration during engine operation. Remove the tool from the hole and turn the oil pump sprocket 1 complete revolution. Realign the timing marks and insert the tool. The shaft of the tool must go in at least 2 1/3 in.
   3. Recheck and realign the timing mark.
   4. Leave the tool in place to hold the silent shaft while continuing.
2. Install the belt to the crankshaft sprocket, oil pump sprocket, then camshaft sprocket, in that order. While doing so, make sure there is no slack between the sprocket except where the tensioner is installed.
3. Recheck the timing marks' alignment. If all are aligned, loosen the tensioner mounting bolt and allow the tensioner to apply tension to the belt.
4. Remove the tool that is holding the silent shaft and rotate the crankshaft a distance equal to 2 teeth on the camshaft sprocket. This will allow the tensioner to automatically apply the proper tension on the belt. Do not manually overtigthen the belt or it will howl.
5. Tigthen the lower mounting bolt first, then the upper spacer bolt.
6. To verify correct belt tension, check that the deflection at the longest span of the belt is about 1 / 2 in.
7. Install the timing belt covers and all related items.
8. Connect the negative battery cable.

2.0L Engine
1990-94 VEHICLES
See Figures 4, 5, 6 and 7

1. Disconnect the negative battery cable.
2. Remove the timing belt upper and lower covers.
3. Rotate the crankshaft clockwise and align the timing marks so No. 1 piston will be at TDC of the compression stroke. At this time the timing marks on the camshaft sprocket and the upper surface of the cylinder head should coincide, and the dowel pin of the camshaft sprocket should be at the upper side.

Always rotate the crankshaft in a clockwise direction. Make a mark on the back of the timing belt indicating the direction of rotation so it may be reassembled in the same direction if it is to be reused.

1. Remove the auto tensioner and remove the outermost timing belt.

Fig. 4: Exploded view of the timing belt and sprockets-1990-94 2.0L engines

1. Remove the timing belt tensioner pulley, tensioner arm, idler pulley, oil pump sprocket, special washer, flange and spacer.
2. Remove the silent shaft (inner) belt tensioner and remove the belt.
3. Remove the crankshaft retaining bolts, then remove the pulley.
4. Remove the crankshaft sprocket retainer bolt and washer from the sprocket, if used, and remove the sprocket. If the sprocket is hard to removed, the proper puller may be used. If no bolts are used on the sprocket. Use the correct puller to remove.
5. Hold the camshaft stationary using the hexagon cast between journals No. 2 and 3 and remove the retainer bolt. Remove the sprocket from the camshaft.

To install:

1. Install the sprockets to their appropriate shafts. Install the retainer bolts and tighten the camshaft sprocket bolt to 65 ft. lbs. (90 Nm).
2. Check both tensioner and idler pulley for bearing wear, and replace if needed.
3. Align the timing marks on the crankshaft sprocket and the silent shaft sprocket. Fit the inner timing belt over the crankshaft and silent shaft sprocket. Ensure that there is no slack in the belt.

Fig. 5: Align the camshaft sprocket so marks face each other and are in alignment with the top surface of the cylinder head-1990-94 2.0L engine



Fig. 6: Align the crankshaft timing mark and the oil pump sprocket timing mark-1990-94 2.0L engine



Fig. 7: Timing marks in alignment-1990-94 2.0L engine

1. While holding the inner timing belt tensioner with your fingers, adjust the timing belt tension by applying a force towards the center of the belt, until the tension side of the belt is taut. Tighten the tensioner bolt.

When tightening the bolt of the tensioner, ensure that the tensioner pulley shaft does not rotate with the bolt. Allowing it to rotate with the bolt can cause excessive tension on the belt.

1. Check belt for proper tension by depressing the belt on its' long side with your finger and noting the belt deflection. The desired reading is 0.20-0.28 in. (5-7mm). If tension is not correct, readjust and check belt deflection.
2. Install the flange, crankshaft and washer to the crankshaft. The flange on the crankshaft sprocket must be installed towards the inner timing belt sprocket. Tighten bolt to 80-94 ft. lbs. (110-130 Nm).
3. To install the oil pump sprocket, insert a Phillips screwdriver with a shaft 0.31 in. (8mm) in diameter into the plug hole in the left side of the cylinder block to hold the left silent shaft. Tighten the nut to 36-43 ft. lbs. (50-60 Nm).

continue...

See Figures 1, 2 and 3

1. If possible, position the engine so the No. 1 piston is at TDC.
2. Disconnect the negative battery cable.
3. Remove the timing belt covers.
4. Remove the timing (outer) belt tensioner and remove the outer timing belt.
5. Remove the outer crankshaft sprocket and flange.
6. Remove the silent shaft (inner) belt tensioner and remove the belt.

Fig. 1: Silent shaft belt timing marks-1.8L engine Fig. 2: Checking the silent shafts for proper positioning Fig. 3: Timing belt timing mark alignment-1.8L engineTo install:

1. Align the timing marks of the silent shaft sprockets and the crankshaft sprocket with the timing marks on the front case. Wrap the timing belt around the sprockets so there is no slack in the upper span of the belt and the timing marks are still aligned.
2. Install the tensioner pulley and move the pulley by hand so the long side of the belt deflects about 1/4in.
3. Hold the pulley tightly so the pulley cannot rotate when the bolt is tigthened. Tighten the bolt to 15 ft. lbs. (20 Nm) and recheck the deflection amount.
4. Install the timing belt tensioner fully toward the water pump and tighten the bolts. Place the upper end of the spring against the water pump body.
5. Align the timing marks of the camshaft, crankshaft and oil pump sprockets with their corresponding marks on the front case or rear cover.

There is a possibility to align all timing marks and have the oil pump sprocket and silent shaft out of time, causing an engine vibration during operation. If the following step is not followed exactly, there is a 50 percent chance that the silent shaft alignment will be 180 degrees off.

1. Before installing the timing belt, ensure that the left side (rear) silent shaft (oil pump sprocket) is in the correct position as follows:
   1. Remove the plug from the rear side of the block and insert a tool with shaft diameter of 0.31 in. (8mm) into the hole.
   2. With the timing marks still aligned, the shaft of the tool must be able to go in at least 2 1/2 in. If the tool can only go in about 1 in., the shaft is not in the correct orientation and will cause a vibration during engine operation. Remove the tool from the hole and turn the oil pump sprocket 1 complete revolution. Realign the timing marks and insert the tool. The shaft of the tool must go in at least 2 1/3 in.
   3. Recheck and realign the timing mark.
   4. Leave the tool in place to hold the silent shaft while continuing.
2. Install the belt to the crankshaft sprocket, oil pump sprocket, then camshaft sprocket, in that order. While doing so, make sure there is no slack between the sprocket except where the tensioner is installed.
3. Recheck the timing marks' alignment. If all are aligned, loosen the tensioner mounting bolt and allow the tensioner to apply tension to the belt.
4. Remove the tool that is holding the silent shaft and rotate the crankshaft a distance equal to 2 teeth on the camshaft sprocket. This will allow the tensioner to automatically apply the proper tension on the belt. Do not manually overtigthen the belt or it will howl.
5. Tigthen the lower mounting bolt first, then the upper spacer bolt.
6. To verify correct belt tension, check that the deflection at the longest span of the belt is about 1/2in.
7. Install the timing belt covers and all related items.
8. Connect the negative battery cable.