1998 Mazda Pickup Logo
Posted on Jul 12, 2010
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Timing belt markings mazda B2500 1998 - 1998 Mazda Pickup

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Duane Wong

Duane Wong

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  • Mazda Master 6,826 Answers
  • Posted on Jul 12, 2010
Duane Wong
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Joined: Jun 20, 2010
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Timing Belt, Sprockets & Front Cover Removal & Installation Timing belt To Remove:

  1. Disconnect the negative battery cable.
  2. Remove the exhaust side spark plugs, outer timing belt cover, and crankshaft pulley.
  3. Turn the crankshaft until the number one piston is at top dead center (TDC). CAUTION
    The camshaft belt tensioner tool (303-097) can be damaged when trying to relieve belt tension if you attempt to remove the belt without first loosening both the timing belt tensioner adjusting bolt and the spring pivot bolt.
  4. Loosen the timing belt spring pivot bolt, but do not remove it at this point in the procedure.
  5. Loosen the adjusting bolt slowly and release the spring tension.
  6. Turn the tensioner with the camshaft belt tensioner tool (303-097), against the spring pressure, clockwise to the farthest position.
  7. While holding it in this position, tighten the adjusting bolt to hold the tensioner away from the belt.
  8. Remove the timing belt.
To Install:
  1. Be certain that on piston number one, the crankshaft is at TDC with the crankshaft keyway pointing straight up and the circle on the crankshaft sprocket lined up with the notch on the engine front cover.
  2. Line up the timing marks.
  3. Install the timing belt over the crankshaft sprocket going counterclockwise over the oil pump sprocket and over the camshaft sprocket.
  4. Loosen the bolt allowing the tensioner pulley to press against the timing belt. NOTE: The timing belt tensioner should not be tightened or the belt tension will not be evenly distributed over the whole belt.
  5. Turn the crankshaft two revolutions clockwise. Next, slowly bring the crank to the number one position firing position with the keyway on the crank facing up. The dot on the crankshaft gear is lined up with the notch on the front cover.
  6. Check the timing mark alignment again. If necessary, repeat the procedure.
  7. Tighten the bolts. Torque the pivot bolt to 30-40 ft-lb (40-55 Nm). Torque the adjustment/locking bolt to 26-33 ft-lb (35-45 Nm).
  8. Install the crankshaft pulley and tighten the bolt. Torque to 93-121 ft-lb (125-165 Nm).
  9. Install the outer timing belt cover and tighten the bolt. Torque to 70-106 in-lb (8-12 Nm).
  10. Install the exhaust side spark plugs.
Sprockets To Remove:
  1. Remove the timing belt.
  2. Install the camshaft sprocket holding/removing tool (303-098) onto the sprocket.
  3. Remove the camshaft sprocket.
To Install:
  1. Place the key and camshaft sprocket on the shaft.
  2. Install the camshaft sprocket holding/removing tool (303-098) onto the camshaft sprocket and tighten the bolt. Torque to 52-70 ft-lb (70-95 Nm).
  3. Remove the tool then install the timing belt.
Outer Cover To Remove:
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Disconnect the negative battery cable.
  3. Remove the fan shroud.
  4. Loosen the bolts on the water pump pulley, but do not remove them at this point in the procedure.
  5. Remove the drive belt, the water pump pulley, and the fan and clutch assembly.
  6. Recover the refrigerant from the A/C system.
  7. Disconnect the A/C wiring connector.
  8. Remove the A/C compressor from the mounting bracket then remove the A/C mounting bracket with the power steering pump still attached.
  9. Remove the outer timing belt cover.
To Install:
  1. Install the outer timing belt cover. Torque to 70-106 in-lb (8-12 Nm).
  2. Install the A/C mounting bracket with the power steering pump still attached. Torque the M10 bolts and stud to 35 ft-lb (48 Nm) and torque the M8 bolt to 18 ft-lb (25 Nm).
  3. Install the A/C compressor to the mounting bracket. Torque to 16-20 ft-lb (21-28 Nm).
  4. Connect the A/C wiring connector.
  5. Refill the refrigerant into the A/C system.
  6. Install the fan and clutch assembly, the water pump pulley, and the drive belt.
  7. Tighten the bolts on the water pump pulley. Torque to 13-17 ft-lb (17-23 Nm).
  8. Install the fan shroud. Torque to 54-70 in-lb (6-8 Nm).
  9. Connect the negative battery cable.
  10. Start the engine. Check for leaks and repair as necessary.
Inner Cover To Remove:
  1. Loosen oil pump sprocket bolt.
  2. Remove timing belt, timing belt tensioner, oil pump sprocket, and crankshaft pulley.
  3. Remove inner timing belt cover.
To Install:
  1. Install inner timing belt cover.
  2. Install crankshaft pulley. Torque to 93-121 ft-lb (125-165 Nm).
  3. Install the oil pump sprocket.
  4. Install the timing belt tensioner. Torque the pivot bolt to 30-40 ft-lb (40-55 Nm). Torque the adjustment/locking bolt to 26-33 ft-lb (35-45 Nm).
  5. Install the timing belt.
  6. Tighten the oil pump sprocket bolt. Torque to 30-40 ft-lb (40-55 Nm).
  7. Torque the camshaft bolt to 52-70 ft-lb (70-95 Nm).

1 Related Answer

ZJLimited

ZJ Limited

  • 17989 Answers
  • Posted on Apr 06, 2011

SOURCE: How does the timing belt cover come off the 1998

REMOVAL & INSTALLATION

2.3L/2.5L Engines
(see Figure 1 - click over pic for zoom)

zjlimited_982.jpg

Fig. 1: Timing belt cover on the 2.3L/2.5L engine

  1. Disconnect the negative battery cable.
  2. Rotate the engine so that No. 1 cylinder is at TDC on the compression stroke. Check that the timing marks are aligned on the camshaft and crankshaft pulleys. An access plug is provided in the cam belt cover so that the camshaft timing can be checked without removal of the cover or any other parts. Set the crankshaft to TDC by aligning the timing mark on the crank pulley with the TDC mark on the belt cover. Look through the access hole in the belt cover to make sure that the timing mark on the cam drive sprocket is lined up with the pointer on the inner belt cover.
Always turn the engine in the normal direction of rotation. Backward rotation may cause the timing belt to jump time, due to the arrangement of the belt tensioner.
  1. Drain cooling system. Remove the upper radiator hose as necessary. Remove the fan blade and water pump pulley bolts.
CAUTION When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
  1. Loosen the alternator retaining bolts and remove the drive belt from the pulleys. Remove the water pump pulley.
  2. Loosen and position the power steering pump mounting bracket and position it aside.
  3. Remove the timing belt outer cover retaining bolts and any interlocking tabs and remove the cover.
To install:
  1. Install the timing belt cover.
  2. Install the water pump pulley and fan blades. Install upper radiator hose if necessary. Refill the cooling system.
  3. Position the alternator and drive belts, then adjust and tighten it to specifications.
  4. Connect the negative battery cable.

Hope helps (remember to rated this answer).

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