All vehicles utilize belts to drive engine accessories off the end of the crankshaft. The type of car and number of accessories present, will determine whether the vehicle uses standard V-type belts, a cog belts or some variation of a rib belt. In either case, these belts must be properly adjusted at all times. Loose belt(s) will result in slippage which may cause noise or improper accessory operation.
See Figures 1, 2, 3 and 4
Inspect all drive belts for excessive wear, cracks, glazed condition and frayed or broken cords. Replace any drive belt showing the above condition(s). Belts should be inspected at least 2 times per year, but it is always a good idea to take a look at them whenever the hood is open. Also, refer to your owner's manual for recommended change intervals.
If a drive belt continually gets cut, the crankshaft pulley might have a sharp projection on it. Have the pulley replaced if this condition exists.
Based upon on the production year, the Tempo/Topaz utilized serpentine, cogged and V-belts on their gasoline and diesel engines. Some engines used only a single type of belt, while other engines used a combination. Before replacing any belts, check to see which type of belt(s) your vehicle requires.
The following should be observed when belt tension adjustment and/or replacement is
V-Belt & Cogged V-Belt
See Figures 5, 6, 7, 8, 9 and 10
One method of cogged and V-belt adjustment requires the use of a tension gauge. Since most people do not have the necessary gauge, a deflection method of adjustment can be used instead. Locate a midway point on the belt between two pulleys. Push down on the belt with one finger and measure the deflection. For belts with a distance of 12 in. (305mm) or less between the pulleys, 1 / 8 - 1 / 4 in. (3-6mm) is a desirable deflection measurement. For belts with a distance greater than 12 in. (305mm) between the pulleys, 1 / 8 - 3 / 8 in. (3-9mm) is an acceptable measurement. Keep in mind that too tight an adjustment will quickly wear the accessories bearings, while too loose and adjustment may cause a whipping action and subsequent accessory damage as well.
On some gasoline 2.3L engines using a cogged belt, a 4 inch C-clamp can be used to help adjust the alternator belt. Place the bottom jaw of the C-clamp under the alternator adjustment boss and the upper jaw in the notch at the top of the alternator bracket. By screwing in the C-clamp the belt tension is changed.
To adjust the deflection of other cogged or V-belts, proceed as follows:
- Loosen the accessory adjustment and pivot bolts.
- If equipped with a slider idler pulley, loosen the adjusting bolt.
- Carefully pry against the accessory, using a suitable prytool, in order to gain the proper belt tension. Idler pulleys are adjusted using the nut located just beneath the pulley itself. To tighten the belt, turn the nut to the right, to loosen, turn nut to the left.
- Tighten the accessory or idler pulley adjustment bolts. Release any pressure on the prybar. Tighten all pivot bolts.
- Check the belt tension and reset, if necessary.
Belt tension on engines using ribbed or serpentine belts is maintained by an automatic tensioner and does not require adjustment. Movement of the automatic tensioner pulley is not a sign of a malfunctioning tensioner. The movement is required to maintain a constant belt tension with cyclical engine and accessory loads.
When re-tensioning a loose serpentine belt, it is important that the belt not be allowed to relax and unseat from the drive and accessory pulleys.
REMOVAL & INSTALLATION
Depending on the engine and types of accessories installed, certain belts may require removal for access to other belts. When removing belts of different lengths, either tag the belt, or remember the order and location of the belts. Many vehicles come with a diagram in the engine compartment which covers belt routing, in the event the order is forgotten.V-Belt & Cogged V-Belt
- Loosen adjustment and pivot bolts.
- Remove the belt by pivoting the particular accessory (alternator, power steering pump, air box, etc.) to decrease belt tension. Slide the belt off the pulley and remove it from the engine.
- Inspect the belt for wear or damage. If the belt is torn, check pulley for any sharp edges, and determine if edge can be filed or the pulley must be replaced.
- Determine correct belt for respective unit.
- Install the new bolt on the drive unit and either move the unit toward or away from the engine to create tension on the belt.
- Snug the mounting and/or adjusting bolt to hold the driven unit secure, but do not completely tighten.
- Use the above procedure checking the deflection of the belt.
- Start car and check for loose or noisy belts. Readjust if necessary.
See Figures 11, 12 and 13
Depending on the year, type of engine and level of accessaries installed on the engine, certain vehicles utilize either V-belts and or cogged V-belts in addition to ribbed belts. As a result, one or more of these belts move have to be removed to enable you to remove the ribbed belt.
The use of an 18 in. (457mm) or longer 3 / 8 in. drive socket extension will be needed to remove and install a ribbed belt.
- Determine whether the engine utilizes multiple belts, and remove those belts needed to expose the ribbed belt.
- Insert the 3 / 8 in. extension into the belt tensioner, and push away to relieve tension on the belt. Remove the belt from the tensioner.
- Remove the extension from the belt tensioner. Finish removing the ribbed belt from the engine.
- Check all belts for torn areas. If tears are present, inspect pulleys for sharp edges, and determine whether the edge can be filed, or the pulley must be replaced.
- Reinstall ribbed belt on to all pulleys except belt tensioner.
- Using the extension, insert it into the belt tensioner and push away from you. Carefully install the ribbed belt on the tensioner, and slowly allow the extension to move toward you as tension is placed on the belt.
- Remove extension from belt tensioner. Inspect ribbed belt to make sure it is seated correctly on all the pulleys. If not, remove belt and reinstall.
- If vehicle utilizes other belts, reinstall them and secure all bolts.
- Start car and check for loose or noisy belts.