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Loosened air conditioner compressor, but it doesn't slide over enough to get belt back on. Everybody keeps telling me to loosen the alternator, but this belt only goes on the waterpump, crankshaft, and air conditioner compressor
Re: put new water pump on, cannot get belt back on
Unbolt the pulley from the water pump, slip the belt over everything and refasten the the pulley to the pump while the belt is draped over it. Then tighten up the belt.
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1 Raise your Town Car's hood. Loosen the connections on the battery cable ends with a 1/2-inch wrench. Lift the cables off the posts of the battery by hand.
2 Drain the antifreeze from the radiator into a drain pan by loosening the drain plug on the bottom right corner of the radiator by hand. Place the antifreeze where children and animals cannot access it.
3 Remove the fan shroud as well as the bolts that hold the fan to the water pump using a 10 mm socket on the fan shroud bolts. Remove the idler pulley bracket and the belt from the air conditioner compressor using a 9/16-inch socket and ratchet. Loosen the bolts on the power steering pump with a 5/8-inch socket, then push down on the power steering pump to loosen the belt and remove it. The air conditioner compressor and the power steering pump are both located on the right front side of the engine block.
4 Remove the lower radiator hose from the water pump by loosening the clamp with a flat head screwdriver, then remove the bypass hose from the top of the water pump.
5 Remove all of the bolts that secure the water pump to the block of the engine, then remove the water pump. Use a razor blade knife to scrape the surface of the water pump jackets on the block and remove any remaining gasket material
Place the drain pan under the radiator petcock. Open the petcock and allow the antifreeze to drain. If the drain pan is clean and the antifreeze is less than five years old, you can reuse the antifreeze.
2
Place the block of wood on the floor jack. Slide the jack under the engine and raise the engine slightly. Unbolt and remove the front engine mount. On the 4A-GE engine, loosen the power steering and air conditioning belts by loosening the adjusting nuts or bolts on the slider bracket and sliding the accessory toward the engine. Remove the belts.
3Loosen the water pump pulley bolts with the appropriate socket. Loosen the alternator locking bolt and the pivot nut. Push the alternator toward the engine to loosen the tension on the belt. Lift the belt off the pulleys.
4
Remove the four bolts on the water pump pulley using the appropriate socket. Remove the water pump pulley. Disconnect the water inlet and bypass hoses from the inlet pipe using a screwdriver or pliers, depending on the type of clamp used.
5
Disconnect the water inlet pipe by removing the two clamp bolts and the two nuts behind the pump. Remove the inlet pipe. Remove the O-ring from the back of the pump. Remove the mounting bolt on the oil dipstick tube. Remove the tube and the dipstick. Plug the hole with a rag so that debris doesn't get into the crankcase and contaminate the oil.
6
Remove the upper and middle timing belt covers. Remove the water pump retaining bolts and pull the pump off the engine. Take care not to get any antifreeze on the timing belt.
7
Place the O-ring in its groove on the block. Install the water pump and tighten the bolts to 11 ft.-lbs. of torque. Reinstall the timing belt covers. Make sure they are seated properly and not touching the timing belt.
8
Coat a new oil dipstick O-ring with engine oil. Slide it on the dipstick. Reinstall the dipstick and the retaining bolt. Tighten the bolt to 82 in.-lbs. of torque. Place a new O-ring on the inlet pipe for the water pump. Reinstall the inlet pipe. Attach the clamps and bolts that hold the pipe in place. Tighten the bolts to 8 ft.-lbs. of torque.
9
Reconnect the inlet and bypass hoses to the pipe. Install the water pump pulley. Tighten the four pulley bolts enough to hold everything in place. Reinstall all the accessory drive belts and adjust the tension properly. You should be able to turn the belts 90 degrees when they are at the correct tension. The water pump should resist turning. Tighten the water pump pulley bolts to 17 ft.-lbs. of torque. Reinstall the engine mount. Tighten the petcock on the radiator. Refill the radiator.
Loosen alternator and alternator tensioner. Alternator tensioner bolts to water pump so that bolt will need to come out.
With the alternator loose, the main drive belt should be loose and be able to be removed, do this.
Loosen the tensioner bolt for the air conditioner, on the underside of the engine.
Losen the nut on the air conditioner tension wheel. The tensioner wheel
should now slide up and down freely, allowing removal of the air
conditioner belt.
Remove the 4 x 10mm bolts on the water pump pulley. Remove the water pump pulley.
Remove the 4 x 10mm bolts on the camshaft pulley. This is the
main pulley that all the belts connect to. There is a large 17mm bolt
in the middle of this pulley that does not need to be removed.
(Crankshaft Bolt).
The camshaft pulley should slide off, however you will
probably have no clearance (because of the crankshaft bolt) to remove
the pulley. The pulley has to be removed.
Place a jack under the sump, use a piece of wood to protect
the sump. Jack the sump up 1/2 inch. Undo the two 14mm bolts in the
engine mounts. When the two left hand engine mount bolts are out, lower
the jack slowly until you can slide the camshaft pulley out.
Remove the plastic timing belt cover.
You should now see the timing belt, remove the timing belt tensioner pulley, being careful not to move the timing belt wheels.
Undo the bolts holding the water pump.
Water pump should come off, water will come out if you haven't drained it.
1
Drain the cooling system. Place a waste oil collection
pan underneath the petcock valve on the lower corner of the radiator.
Open the petcock valve to drain the system.
2
Remove the bolts that connect the fan shroud to the radiator core and remove the fan shroud.
3
Loosen the alternator adjustment bolt and slide the alternator toward the engine. Remove the drive belt.
4
Loosen the adjustment bolt for the air conditioning
compressor, and slide the compressor toward the engine. Remove the drive
belt.
5
Loosen the adjustment bolt on the power steering pump and slide the pump toward the engine. Remove the drive belt.
Removal of the Water Pump
1
Disconnect the bypass hose from the water pump by loosening the hose clamp and pulling the hose off the fitting.
2
Remove the bolts that connect the water pump to the engine block, and remove the water pump and engine fan as an assembly.
3
Remove the four retaining nuts that connect the fan
assembly to the water pump. They will be located between the fluid
coupling and the water pump pulley.
Installation of the Water Pump
1
Attach the fan assembly to the new water pump by sliding
the pulley then the fluid coupling onto the water pump and reinstalling
the retaining nuts.
2
Clean any old gasket material off the water pump mounting surface on the engine block.
3
Place the new water pump gasket on the water pump mounting surface.
4
Slide the new water pump into position and reinstall the mounting bolts.
5
Reconnect the bypass hose by sliding the hose over the fitting and tightening the hose clamp.
Reinstalling the Drive Belts and Fan Shroud
1
Reinstall the the drive belts for the power steering
pump, air conditioning compressor and alternator. Tighten the adjusting
bolts.
2
Measure the deflection of each belt to make sure the
belts are properly tightened. Measure deflection by placing a straight
edge along the belt against the accessory pulley and the water pump
pulley. Push down on the belt and measure the distance between the belt
at the midpoint and the straight edge. It should be between 1/2 and 1/4
inch. Any more and the belt needs to be tightened. Loosen the adjustment
and slide the accessory away from the engine to tighten.
3
Drop the fan shroud into position and reinstall the bolts that secure it to the radiator.
4
Close the petcock valve on the radiator and fill the cooling system with fresh coolant.
The alternator belt on the 1999 Dodge Caravan also controls the air conditioner compressor, the water pump and the power steering pump. The belt is called a serpentine belt, and it is designed to fit around all of the accessory pulleys at the same time. As the belt travels around each accessory pulley, it enables the accessory to operate. Once the belt is damaged, cracked or frayed, you should change it before it breaks. If that happens, each of the accessories will stop working.
Open the hood and prop it up so that it does not fall. Engage the parking brake.
Inspect the top surface of the fan shroud for the serpentine belt routing diagram. Follow the routing instructions on the diagram to install the new belt.
Locate the serpentine belt self-adjusting tensioner on the front of the engine. The tensioner is directly below the alternator. Use the bolt that connects the tensioner pulley to the tensioner arm to rotate the tensioner.
Turn the tensioner device counterclockwise to move the tensioner. This will relieve the tension from the belt. Once the belt has enough slack in it, slide the belt out from under the tensioner pulley.
Lift the belt off each accessory pulley. Slide the belt around the fan blades and out of the engine area.
Lay the old belt next to the new belt to ensure that the new belt is the correct width and length. Slide the belt around the fan blades and around the crankshaft pulley on the bottom of the engine.
Follow the belt routing diagram to position the belt around the air conditioner compressor pulley, the power steering pump pulley, the water pump pulley and the idler pulley. Once the belt is routed inside each accessory pulley, inspect the belt to make sure that it is securely inside the pulleys.
Crank the 1999 Dodge Caravan for 10 to 15 seconds to completely seat the belt ribs in the grooves on each accessory pulley. Shut the engine off and close the hood.
If the belt routing diagram for the 1999 Dodge Caravan is missing, use a pen and a notepad to draw the exact routing of the old belt and use it when installing the new belt.
If you have changed the belt I would take it off to see if any of the bearings in a pulley may be going out.You can do this by spinning the pulleys on everything. Spin the water pump,the alt,air compressor. See if they make noise or feel rough while spinning them by hand. Replace whats bad.
Remove the suction pipe bracket for the A/C compressor, if equipped.
Loosen but do not remove the 4 water pump pulley bolts.
Raise and safely support the vehicle.
Remove the lower splash shield.
Remove the A/C compressor drive belt, if equipped.
Remove the alternator drive belt.
Remove the crankshaft and water pump pulleys.
Remove the timing belt.
Remove the oil level dipstick and tube.
Remove the alternator adjusting bracket from the water pump.
Remove the water pump rubber seals.
Remove the water pump mounting bolts and nuts and remove the water pump from the engine.
Water pump mounting location
Clean the gasket mating surfaces thoroughly.
Check the water pump by hand for smooth operation. If the pump does not operate smoothly or is noisy, replace it.
Install the pump using a new gasket. Tighten the bolts to 115 inch lbs. (13 Nm).
Install new rubber seals.
Install the upper alternator adjusting bracket and tighten the bolt to 17 ft. lbs. (23 Nm).
Install the oil level dipstick and tube.
Install the timing belt.
Install the water pump and crankshaft pulleys. Leave the water pump pulley bolts hand-tight.
Install the alternator drive belt.
Install the lower alternator cover plate and tighten the bolts to 89 inch lbs. (10 Nm).
Install the A/C compressor drive belt, if equipped.
Install the lower splash shield and lower the vehicle.
Tighten the water pump pulley mounting bolts to 18 ft. lbs. (24 Nm).
Adjust the water pump drive belt tension and tighten the alternator adjustment bolt to 17 ft. lbs. (23 Nm).
Install the suction pipe bracket for the A/C compressor, if equipped.
Install the air cleaner.
Refill the cooling system.
Connect the negative battery cable.
Start the engine and check for leaks.
Water pump assembly showing rubber seal location
Disconnect the negative battery cable.
Drain the cooling system.
CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by the 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.
Remove the air cleaner assembly.
Loosen but do not remove the four coolant pump pulley bolts.
Raise and support the vehicle safely.
Remove the lower splash shield.
Remove the air conditioner compressor drive belt.
Remove the lower alternator cover plate bolts, loosen the alternator adjusting bolt, and remove the drive belt.
Remove the crankshaft pulley.
Remove the coolant pump pulley.
Remove the timing belt.
Remove the oil level dipstick and guide tube.
Remove the alternator adjusting bracket from the water pump.
Remove the water pump rubber seals.
Remove the water pump mounting bolts and nuts. Remove the water pump from the vehicle.
To install:
Clean the gasket mating surfaces thoroughly.
Check the water pump by hand for smooth operation. If the pump does not operate smoothly or is noisy, replace it.
Install the pump using a new gasket. Tighten bolts to 115 inch lbs. (13 Nm).
Install new rubber seals.
Install the upper alternator adjusting bracket and tighten bolt to 17 ft. lbs. (23 Nm).
Install the oil level dipstick and guide tube.
Install the timing belt.
Install the water pump pulley and leave the bolts hand tight.
Install the crankshaft pulley.
Install the water pump/alternator drive belt.
Install the lower alternator cover plate and tighten bolts to 89 inch lbs. (10 Nm).
Install the air conditioner compressor drive belt by releasing the tensioner pulley and installing belt.
Install the lower splash shield and lower vehicle.
Tighten water pump pulley mounting bolts to 18 ft. lbs. (24 Nm).
Adjust the water pump drive belt tension and tighten alternator adjustment bolt to 17 ft. lbs. (23 Nm).
Install the air cleaner assembly.
Refill the cooling system.
Connect the negative battery cable.
Start the engine and allow it to reach operating temperature. Check for leaks and refill cooling system as necessary.
First go to Nissan's help forum page. Use this link: http://x.nissanhelp.com/forums/index.php
You can get a free login and download up to two files a day using the free login. You want the MA maintenance file of your vans manual. This will include the belt tensions and placement. You will need to remove the plastic cover on the passenger side of the engine to be able to access the belt tensioners on the alt. and power steering pump. Nissan likes to use the same basic tensioners on most of their stuff. The air pump and air conditioner use idler pulleys, you loosen the bolt in the middle of the pulley enough to allow the pulley to move, no more. there is a bolt with its length toward the center of this pulley, when you loosen this bolt the pulley will start to move down and loosen the belt. repeat this process for both the air pump and the air conditioner. The alt. and power steering you loosen the bolt that secures the tensioner, than you can back off the long bolt in the tensioner to loosen and remove the belts.
I usually check each new built with the old one for length and label its sleeve by function as I take each one off. Makes matching them up when you put them back on much easier.
1. Remove negative battery cable 2. Open radiator valve - drain cooling system 3. Remove cooling fan and shroud 4. Remove belt 5. Remove water pump pulley from hub 6. Remove hoses from water pump 7. Loosen heater hose coolant return tube mounting bolt and nut. 8. Remove the tube. Lose the O-Ring. 9. Remove water pump mounting bolts 10. Loosen the clamp on the bypass hose. 11. Remove the hose as you pull the pump away from the engine.
Water pump assembly showing rubber seal location
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