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How to tighten drive belts

How to adjust the drive belts

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Adjust belt drive rear wheel


If the question is how to adjust the drive belt, it's actually pretty easy. With the bike in the side stand you should have about 1/4-3-/8 deflection in the middle of the drive belt pushing with 10lbs of pressure. The best thing to do is purchase a drive belt deflection tool that you can set to 10lbs. If you need to adjust the belt, you loosen the axle nut on the right side and turn the axle from the left side to loosen or tighten the belt tension (Harley uses eccentric shaped washers on both sides of the axle to make this adjustment easy). Once you made the adjustment and tightened the axle nut, double check the deflection to make sure it didn't change while tightening the axle nut. Takes about 10 minutes to check and adjust.

Nov 04, 2013 | 2006 Harley Davidson FXDBI Street Bob

1 Answer

How to remove belts from 1994 dodge caravan 2.5 liter


Drive Belts

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INSPECTION

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.


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Fig. Fig. 1: There are typically 3 types of accessory drive belts found on vehicles today


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Fig. Fig. 2: An example of a healthy drive belt


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Fig. Fig. 3: Deep cracks in this belt will cause flex, building up heat that will eventually lead to belt failure


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Fig. Fig. 4: The cover of this belt is worn, exposing the critical reinforcing cords to excessive wear


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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.


ADJUSTMENT

See Figures 6, 7, 8, 9 and 10


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Fig. Fig. 6: Engine belt tension chart-2.2L engines


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Fig. Fig. 7: Engine belt tension chart-1987-89 2.5L engines


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Fig. Fig. 8: Engine belt tension chart-2.6L engines


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Fig. Fig. 9: Engine belt tension chart-1990-93 models


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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.


REMOVAL & INSTALLATION

See Figure 11
Raise the front of the vehicle, support on jackstands and remove the lower splash shield if access is hampered due to space limitations when changing drive belts.


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Fig. Fig. 11: Support the vehicle, then remove the lower right side splash shield for access to the drive belts
2.2L Engines
A/C COMPRESSOR DRIVE BELT
See Figures 12, 13 and 14


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Fig. Fig. 12: A/C compressor drive belt adjusting points-2.2L engines


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Fig. Fig. 13: Loosening the locking screws for A/C compressor drive belt removal


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Fig. Fig. 14: Removing the A/C compressor drive belt from under the vehicle

  1. Loosen the idler pulley bracket pivot screw and the locking screw.
  2. Remove the belt and install a replacement.
  3. Using a breaker bar and socket apply torque to the welded nut provided on the mounted bracket to obtain proper tension.
  4. Tighten the locking screw first, followed by pivot screw. Tighten to 40 ft. lbs. (55 Nm).

ALTERNATOR DRIVE BELT (CHRYSLER TYPE)
See Figures 15 and 16


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Fig. Fig. 15: Alternator belt adjustment-2.2L engine


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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.

  1. Loosen the pivot nut, locking screw, and the adjusting screw.
  2. Remove the belt and install a replacement.
  3. Adjust to specification by tightening the adjusting screw.
  4. Tighten the locking screw to 25 ft. lbs. (34 Nm).
  5. Tighten the pivot nut to 30 ft. lbs. (41 Nm).

ALTERNATOR DRIVE BELT (BOSCH TYPE)
If removal of the alternator belt is required, the A/C belt must first be removed.
  1. Loosen the pivot nut, locking nut, and adjusting screw.
  2. Remove the belt and install a replacement.
  3. Adjust to specification by tightening the adjusting screw.
  4. Tighten the locking nut to 25 ft. lbs. (34 Nm).
  5. Tighten the pivot nut to 30 ft. lbs. (41 Nm).

POWER STEERING BELT
If removal of the power steering belt is required, the A/C and alternator belts must first be removed.
  1. Loosen the locking screw, and pivot screw.
  2. Remove the belt and install a replacement.
  3. Install a 1 / 2 in. breaker bar into the pump bracket slot, apply pressure with the breaker bar and adjust the belt to specification.
  4. Tighten the locking screw first, then the pivot screw. Tighten to 40 ft. lbs. (55 Nm).

AIR PUMP DRIVE BELT
See Figure 17


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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.

  1. Remove the nuts and bolts retaining the drive pulley cover.
  2. Remove the locking bolt and pivot bolt from the pump bracket, then remove the pump.
  3. Remove the belt and install a replacement.
  4. Position the pump, then install the locking bolt and pivot bolt finger-tight.
  5. Install a 1 / 2 in. breaker bar into the bracket assembly (block the drive pulley to prevent camshaft rotation), and adjust the belt to specification.
  6. Tighten locking bolt and pivot bolt to 25 ft. lbs. (35 Nm).

2.5L Engines
AIR CONDITIONING COMPRESSOR
See Figure 18


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Fig. Fig. 18: Drive belt adjustment points-2.5L engines

  1. Loosen the idler bracket pivot screw and the locking screws to replace, or adjust belt.
  2. Remove the belt and install a replacement.
  3. Adjust the belt to specification by applying torque to weld nut on the idler bracket.
  4. Tighten locking screw first, followed by the pivot screw. Tighten to 40 ft. lbs. (55 Nm).

ALTERNATOR BELT
See Figure 18
If replacement of the alternator belt is required, the A/C drive belt must first be removed.
  1. Loosen the pivot nut, locking nut, and adjusting screw.
  2. Remove the belt and install a replacement.
  3. Adjust the belt to specification by tightening the adjusting screw.
  4. Tighten the locking nut to 25 ft. lbs. (35 Nm).
  5. Tighten the pivot nut to 30 ft. lbs. (40 Nm).

POWER STEERING PUMP
See Figure 18
If replacement of the power steering belt is required, the A/C and alternator belts must first be remove.
  1. Loosen the locking screw and pivot screw to replace, or adjust the belt.
  2. Remove the belt and install a replacement.
  3. Using a 1 / 2 in. breaker bar positioned in adjusting bracket slot, adjust the belt to specification.
  4. Tighten the locking screw followed by the pivot screw. Tighten to 40 ft. lbs. (55 Nm).

2.6L Engines
ALTERNATOR/AIR CONDITIONING COMPRESSOR BELT
See Figure 19


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Fig. Fig. 19: Drive belt adjustment points-2.6L engines

  1. Loosen the locking screw, jam nut, and pivot nut.
  2. Loosen the adjusting screw.
  3. Remove the belt and install a replacement.
  4. Adjust the belt to specification by tightening the adjusting screw.
  5. Tighten the locking screw followed by the pivot nut. Tighten to 16 ft. lbs. (22 Nm).
  6. Tighten the jam nut to 21 ft. lbs. (28 Nm).

POWER STEERING PUMP BELT
See Figure 19
If replacement of the power steering belt is required, the alternator and A/C belt must first be remove.
  1. Loosen the pivot screw, and the locking screw.
  2. Remove the timing pickup.
  3. Remove the belt and install a replacement.
  4. Install a 1 / 2 in. breaker bar in the adjusting bracket slot, torque to specification.
  5. Tighten the locking screw, followed by the pivot screw. Tighten to 40 ft. lbs. (55 Nm).
  6. Install the timing pick-up, and tighten to 160 inch lbs. (18 Nm).

Jul 26, 2012 | 1994 Dodge Grand Caravan

1 Answer

How do I replace the serpentine belt on a 1994 concorde?


Remove the alternator/power steering pump and water pump drive belt to gain access to the air conditioning drive belt.
To remove and install the air conditioning compressor drive belt, first loosen the tensioner pulley lock nut, then turn the adjusting screw to raise or lower the tensioner pulley assembly Accessory Drive - 3.3L Engine or Accessory Drive - 3.5L Engine To adjust the air conditioning drive belt, loosen the tensioner pulley nut and adjust belt tension by tightening adjusting screw. Torque pulley nut to 54 N•m (40 ft. lbs.) after adjustment.
The Poly-V generator/power steering belt has an adjustable tensioner pulley located on the timing belt cover Accessory Drive - 3.5L Engine to maintain proper belt tension. To remove or install this belt, Release tension by loosening the tensioner pulley nut and adjustment bolt Accessory Drive - 3.5L Engine Reverse procedure to install and tighten belt to specified tension.

Jul 10, 2012 | 1994 Chrysler Concorde

1 Answer

Belt routing


V-BELT ADJUSTMENT CAUTION
On models equipped with an electric cooling fan, disconnect the negative battery cable or fan motor wiring harness connector before replacing or adjusting drive belts. The fan may come on, under certain circumstances, even though the ignition is OFF. Alternator Drive Belt
  1. Position a ruler perpendicular to the drive belt at its longest run. Test the tightness of the belt by pressing it firmly with your thumb. The deflection should not exceed 1?4 in. (6mm).
  2. If the deflection exceeds 1?4 in. (6mm), loosen the alternator mounting and adjusting arm bolts.
  3. On 1968-72 V8 and 6 cylinder models, use a prytool to move the alternator toward or away from the engine until the proper tension is reached. NOTE: Apply tension to the front of the alternator only. Positioning the prytool against the rear end housing will damage the alternator.
  4. On 1973 and later V8 models, place a 1 in. (25.4mm) open-end or equivalent wrench on the adjusting arm bolt and pull on the wrench until the proper tension is achieved.
  5. Holding the alternator in place, tighten the adjusting arm bolt. Inspect the belt tension. When the belt is properly tensioned, tighten the alternator mounting bolt. Fig. 1: Alternator belt adjustment 86651054.gif
Power Steering Drive Belt ALL 6-CYLINDER AND 1971-72 V8 MODELS
  1. Holding a ruler perpendicular to the drive belt at its longest run, test the tightness of the belt by pressing it firmly with your thumb. The deflection should not exceed 1?4 in. (6mm).
  2. To adjust the belt tension, loosen the adjusting and mounting bolts on the front face of the steering pump cover plate (hub side).
  3. Using a prytool on the pump hub, move the power steering pump toward or away from the engine until the proper tension is reached. Do not pry against the reservoir as it is relatively soft and easily deformed.
  4. Hold the pump in place, tighten the adjusting arm bolt and then inspect the belt tension. When the belt is properly tensioned tighten the mounting bolts.
1973 AND LATER V8 MODELS
  1. Position a ruler perpendicular to the drive belt at its longest run. Test the tightness of the belt by pressing it firmly with your thumb. The deflection should be about 1?4 in. (6mm).
  2. To adjust the belt tension, loosen the three bolts in the three elongated adjusting slots at the power steering pump attaching bracket.
  3. Turn the steering pump drive belt adjusting nut as required until the proper deflection is obtained. Turning the adjusting nut clockwise will increase tension and decrease deflection; counterclockwise will decrease tension and increase deflection.
  4. Without disturbing the pump, tighten the three attaching bolts. Fig. 2: Power steering belt adjustment (slider type) 86651055.gif
Air Conditioning Compressor Drive Belt
  1. Position a ruler perpendicular to the drive belt at its longest run. Test the tightness of the belt by pressing it firmly with your thumb. The deflection should not exceed 1?4 in. (6mm).
  2. If the engine is equipped with an idler pulley, loosen the idler pulley adjusting boot, insert a prytool between the pulley and the engine (or in the idler pulley adjusting slot), and adjust the tension accordingly. If the engine is not equipped with an idler pulley, the alternator must be moved to adjust, as outlined under Alternator Drive Belt.
  3. When the proper tension is reached, tighten the idler pulley adjusting bolt (if so equipped) or the alternator adjusting and mounting bolts. Fig. 3: Air conditioning belt adjustment 86651056.gif
Thermactor® Air Pump Drive Belt
  1. Position a ruler perpendicular to the drive belt at its longest run. Test the tightness of the belt by pressing it firmly with your thumb. The deflection should be about 1?4 in. (6mm).
  2. To adjust the belt tension, loosen the adjusting arm bolt slightly. If necessary, also loosen the mounting belt slightly.
  3. Using a prytool, pry against the pump rear cover to move the pump toward or away from the engine as necessary. WARNING
    Do not pry against the pump housing itself, as damage to the housing may result.
  4. Holding the pump in place, tighten the adjusting arm bolt and recheck the tension. When the belt is properly tensioned, tighten the mounting bolt. Fig. 4: Air pump adjustment points 86651057.gif
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Nov 12, 2010 | 1988 Mercury Grand Marquis

1 Answer

How do u change a serpentine belt for a 1999 ford escort zx2


ADJUSTMENT 1.8L Engines ALTERNATOR AND WATER PUMP BELT
  1. Loosen the alternator adjusting bolt.
  2. Raise and safely support the vehicle.
  3. Loosen the alternator mounting bolt. NOTE: Do not pry against the stator frame. Position the prybar against a stronger point, such as the area around a case bolt. Fig. 1: A belt tension gauge should be placed on the longest span of the belt to check tension — 1.8L engine 90981g05.gif

  4. Position a suitable belt tension gauge on the longest accessible span of belt and tighten the belt.
  5. Adjust the tension to 86–103 lbs. (383–461 N) for a new belt or 68–86 lbs. (304–383 kg) for a used belt.
  6. If a belt tension gauge is not available, adjust the tension to 0.31–0.35 in. (8–9mm) deflection for a new belt or 0.35–0.39 in. (9–10mm) deflection for a used belt.
  7. Tighten the alternator adjusting bolt to 14–19 ft. lbs. (19–25 Nm).
  8. Tighten the alternator mounting bolt to 27–38 ft. lbs. (37–52 Nm).
  9. Lower the vehicle. Fig. 2: Alternator and water pump pulley belt routing — 1.8L engine 90981g06.gif
POWER STEERING PUMP BELT
  1. Raise and safely support the vehicle.
  2. Loosen the power steering pump mounting bolt and nuts.
  3. Adjust the power steering pump and, if equipped, the air conditioning compressor belt tension by turning the pump adjusting bolt. Fig. 3: Power steering pump belt routing and locations of the mounting bolts, nuts and adjusting nut — models without A/C 90981g07.gif

  4. Tighten the power steering pump mounting nut near the pump adjusting bolt.
  5. Position a suitable belt tension gauge on the longest accessible span of belt and tighten the belt.
  6. Adjust the tension to 110–132 lbs. (491–589 N) for a new belt or 95–110 lbs. (422–491 N) for a used belt.
  7. Check for proper belt deflection. For a new belt (one with less than 10 minutes of run time), the deflection should be 0.31–0.35 in. (8–9mm). For a used belt (one with more than 10 minutes of run time), the deflection should be 0.35–0.39 in. (9–10mm).
  8. Tighten the power steering pump mounting nut, located near the adjusting bolt, to 27–38 ft. lbs. (37–52 Nm).
  9. Tighten the pump mounting bolt behind the pulley to 27–40 ft. lbs. (36–54 Nm), and the remaining pump mounting nut to 23–34 ft. lbs. (31–46 Nm).
  10. Lower the vehicle. Fig. 4: Power steering pump belt routing and locations of the mounting bolts, nuts and adjusting nut — models with A/C 90981g08.gif
1.9L Engines The accessory drive belt for 1.9L engines has no provision for manual belt adjustment, since these engines use an automatic belt tensioner. Drive belt slack is taken up by the automatic tensioner. NOTE: Movement of the automatic tensioner assembly during engine operation is not a sign of a malfunctioning tensioner. This movement is the tensioner self-adjusting and is required to maintain constant belt tension. Fig. 5: Drive belt routing — 1.9L engines 86751052.gif
2.0L Engines The accessory drive belt for 2.0L engines has no provision for manual belt adjustment, since these engines use an automatic belt tensioner. Drive belt slack is taken up by the automatic tensioner. NOTE: Movement of the automatic tensioner assembly during engine operation is not a sign of a malfunctioning tensioner. This movement is the tensioner self-adjusting and is required to maintain constant belt tension. The belt tensioner has a belt length indicator. If the indicator marks are not between the MIN and MAX marks, the belt must be replaced. Fig. 6: Drive belt routing — 2.0L SOHC engine with A/C 90981g23.gif
Fig. 7: Drive belt routing — 2.0L SOHC engine without A/C 90981g24.gif
Fig. 8: Drive belt routing — 2.0L DOHC engine 90981g25.gif
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Jul 16, 2010 | 1999 Ford Escort

1 Answer

Track sliping


Adjust walking belt tension at the front of the unit using the provided hex wrench on the exposed adjustment bolts located on each side of each front roller. Be sure to adjust both bolts on each roller the same amount as to not disrupt belt alignment. Tighten (turn clockwise) each adjustment bolt in full turn increments. After each adjustment, restart unit and check to see if belt slippage has been eliminated. Repeat if necessary.If slipping feel persists after several adjustments, stop and see if it maybe the drive belt. Remove left rear plastic cover to expose “v” belt drive line and motor. Tighten nut on the motor tension bolt located on front side of motor in 1/2 turn increments until drive belt slippage is eliminated - DO NOT OVER TIGHTEN. Replace cover when finished.

Jun 27, 2010 | Bowflex Treadclimber

1 Answer

Belt is slipping


This is caused by one of three problems. First and most likely, the walking belt is loose. To tighten the belt, start by locating the two bolts that adjust the rear roller (one on each side of the unit in the back). Run the unit at about 3 mph. Tighten the bolts a 1/4 turn at a time. Make sure that what you do to one side, you MUST do to the other side or the belt will get off center. After you tighten it 1/4 turn, check the belt to see if it is still slipping. If it is then tighten the belt 1/4 turn again. Continue until the belt does not slip, but do not tighten the bolts more than 2 full turns. If it takes more than 2 turns then something else is the problem. The second problem that it could be is the drive belt might be loose. To tighten the drive belt, start by removing the front cover. loosen the bolts around the motor then tighten the drive belt by tightening the motor adjuster bolt. Once the drive belt is tight, tighten the motor back down. The third problem that it could be is the walking belt could be worn and need to be replaced. Let me know if you have any questions.

Mar 29, 2010 | RTO Image 15.0R Treadmill Walking Belt

1 Answer

Drive belt adjustment


most belts are tightened by an idler pulley, which is either controlled by
1) the operator moving or sqeeqing a lever (this type of system may have a cable adjustment)

2) and/or a tensioner spring tightened idler pulley
no adjustment is required

3) if the belt is still too loose, and new belt may be required

Nov 08, 2009 | Troy-Bilt Garden

1 Answer

Motor is running but belt isnt moving


This is caused by one of three problems. First and most likely, the walking belt is loose. To tighten the belt, start by locating the two bolts that adjust the rear roller (one on each side of the unit in the back). Run the unit at about 3 mph. Tighten the bolts a 1/4 turn at a time. Make sure that what you do to one side, you MUST do to the other side or the belt will get off center. After you tighten it 1/4 turn, check the belt to see if it is still slipping. If it is then tighten the belt 1/4 turn again. Continue until the belt does not slip, but do not tighten the bolts more than 2 full turns. If it takes more than 2 turns then something else is the problem. The second problem that it could be is the drive belt might be loose. To tighten the drive belt, start by removing the front cover. loosen the bolts around the motor then tighten the drive belt by tightening the motor adjuster bolt. Once the drive belt is tight, tighten the motor back down. The third problem that it could be is the walking belt could be worn and need to be replaced. Let me know if you have any questions.

Mar 31, 2009 | Proform 650 Crosstrainer Treadmill

2 Answers

Belt slipping on treadmill


This is caused by one of three problems. First and most likely, the walking belt is loose. To tighten the belt, start by locating the two bolts that adjust the rear roller (one on each side of the unit in the back). Run the unit at about 3 mph. Tighten the bolts a 1/4 turn at a time. Make sure that what you do to one side, you MUST do to the other side or the belt will get off center. After you tighten it 1/4 turn, check the belt to see if it is still slipping. If it is then tighten the belt 1/4 turn again. Continue until the belt does not slip, but do not tighten the bolts more than 2 full turns. If it takes more than 2 turns then something else is the problem. The second problem that it could be is the drive belt might be loose. To tighten the drive belt, start by removing the front cover. loosen the bolts around the motor then tighten the drive belt by tightening the motor adjuster bolt. Once the drive belt is tight, tighten the motor back down. The third problem that it could be is the walking belt could be worn and need to be replaced. Let me know if you have any questions.

Jan 06, 2009 | Exercise & Fitness

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