Question about 1987 Ford Econoline
My friend told me that there's an adjustment screw to tighten the new belts. I can't find. Can you tell me (or show me) where this is?
Try "autozone.com" for a diagram of the belts and where the tensioner is located to tighten the belts
Posted on Mar 05, 2009
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Posted on Jan 02, 2017
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Sep 25, 2014 | Volvo V70 Cars & Trucks
Excessive belt tension will cause damage to the alternator and water pump pulley bearings, while, on the other hand, loose belt tension will produce slip and premature wear on the belt. Therefore, be sure to adjust the belt tension to the proper level.
To adjust the tension on a drive belt, loosen the adjusting bolt or fixing bolt locknut on the alternator, alternator bracket or tension pulley. Then move the alternator or turn the adjusting bolt to adjust belt tension. Once the desired value is reached, secure the bolt or locknut and recheck tension.
Fig. . . . then remove the alternator belt from the engine
Fig. . . . then remove the power steering belt from the engine
Fig. Accessory V-belt routing-Mitsubishi 3.5L and 1998-00 3.0L SOHC Galant engines
ALTERNATOR AND A/C COMPRESSOR
Mar 21, 2013 | 1996 Mitsubishi Mirage
See Figures 1, 2, 3, 4 and 5
Check the condition and tension of all drive belts every 12,000 miles, or at least once a year. Loose drive belts can lead to poor engine cooling and diminished alternator, power steering pump, air conditioning compressor, or emission air pump output. A belt that is too tight places a strain on the bearings in the driven component.
Fig. Fig. 5: Installing too wide a belt can result in serious belt wear and/or breakage
Replace any drive belt that is glazed, worn, cracked, or stretched to the point where correct adjustment tension is impossible. If two belts are used to drive a component, always replace both belts when replacement is necessary. After installing a new belt, run the engine for ten minutes, shut OFF the engine and recheck the belt tension. Readjust if necessary.
Fig. Fig. 10: Engine belt tension chart-1994-95 models
Two popular methods of checking drive belt adjustment are; the Belt Tension Gauge Method and the Belt Deflection Method. The former requires a special gauge and the latter requires a straight edge and scale or just a good eye for measurement. The deflection method will be used in the following belt replacement instructions. A rule of thumb for checking belt tension by the deflection method is to determine the midpoint between two pulleys of the drive belt and press down at that point with moderate thumb pressure. The belt should deflect to the measurement indicated in the following installation procedures. Adjustment is necessary if the belt is either too loose or too tight.
WARNING A belt adjustment which is either too loose or too tight will eventually damage the accessory that belt is driving. A too loose adjustment allows free-play in the belt which could transfer a whipping motion or shock to the accessory drive pulley. Similarly, a belt which is too tight will preload the accessory bearings, leading to early failure.
Fig. Fig. 14: Removing the A/C compressor drive belt from under the vehicle
Fig. Fig. 16: Loosening the locking screw for alternator drive belt removal
If removal of the alternator belt is required, the A/C belt must first be removed.
Fig. Fig. 17: Air pump belt adjustment-2.2L engines
When servicing the air pump, use the square holes provided in the pulley to prevent camshaft rotation.
Fig. Fig. 18: Drive belt adjustment points-2.5L engines
Fig. Fig. 19: Drive belt adjustment points-2.6L engines
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Remove the alternator/power steering and water pump drive belt to gain access to the air conditioning belt.
Loosen the tensioner pulley locknut, then turn the adjusting screw to raise or lower the tensioner pulley assembly. Remove the belt.
Install the belt.
To adjust the belt, loosen the tensioner pulley nut and adjust the belt tension by tightening the adjusting screw. Tighten the pulley nut to 40 ft. lbs. (54 Nm) after adjustment.
Install the alternator/power steering and water pump drive belt and adjust.
Start the engine and check for proper belt alignment and any abnormal noise.
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