Filed Under (Jeep) by admin on 03-01-2011
Correct drive belt tension is required to ensure optimum performance of the belt driven engine accessories. There are different types of adjustment gauges for checking either a serpentine or a V-type belt. Use the correct gauge when checking belt tension. Place gauge in the middle of the section of belt being tested (between two pulleys) to check tension. Do not allow the gauge (or gauge adapter) to contact anything but the belt. BELT SCHEMATICS The belt routing schematics are published from the latest information available at the tingle of publication. If anything differs between these schematics and the Belt Routing Label, use the schematics on Belt Routing Label. This label is located in the engine compartment. BELT REPLACEMENT OR ADJUSTMENT- LEFT HAND DRIVE Belt tension is adjusted at the power steering pump bracket and idler pulley assembly. 1. Disconnect negative battery cable from battery. 2. Loosen idler pulley bolt at the power steering bracket. 3. Loosen adjusting bolt until belt can be removed from pulleys. 4. Remove belt. INSTALLATION 1. Check condition of all pulleys. CAUTION: When installing the serpentine accessory drive belt, the belt MUST be routed correctly. If not, the engine may overheat due to the water pump rotating in the wrong direction. 2. Install new belt. 3. Using serpentine belt tension gauge, tighten adjusting bolt until belt reaches proper tension. Refer to Belt Tension at the rear of this section for proper belt tension. 4. After belt is tensioned correctly, tighten idler pulley bolt to 47 Nm (35 ft. lbs.) 5. After idler pulley has been tightened into position, recheck belt tension. Adjust if necessary. BELT REPLACEMENT OR ADJUSTMENT- RIGHT HAND DRIVE (4.0L) 1. Disconnect negative battery cable from battery. 2. Loosen lower alternator mounting bolt and nut. 3. Loosen upper alternator mounting nut. 4. Loosen adjusting bolt at upper alternator bracket until belt can be removed from pulleys. 5. Remove belt. INSTALLATION 1. Check condition of all pulleys.
Filed Under (Buick) by admin on 22-07-2010
The supercharged 3800 engine uses two drive belts. The outer belt drives the supercharger. The inner belt drives the generator, power steering pump, coolant pump and air conditioning compressor. All driven accessories are rigidly mounted to the engine. Drive belt tension is maintained by the spring loaded belt tensioners. Each belt has its own tensioner. A belt squeak when the engine is started or stopped is normal and has no effect on belt durability. The drive belt tensioner can control belt tension over a broad range of belt lengths due to stretching. 1. Remove the battery. 2. Rotate the tensioner (2) counterclockwise to remove the drive belt (1). 3. Remove the supercharger belt (1) from the engine. 4. Rotate the tensioner (2) counterclockwise to remove the drive belt (1). 5. Remove the accessory belt (1) from the engine. Installation Procedure 1. Position the accessory drive belt (1) to the pulleys. 2. Rotate the tensioner (2) counterclockwise to install the drive belt (1). 3. Position the supercharger drive belt (1) to the pulleys. 4. Rotate the tensioner (2) counterclockwise to install the drive belt (1). 5. Install the battery.
Filed Under (Ford) by admin on 18-08-2010
1. Disconnect the battery ground cable. 2. Remove the drive belt and the drive belt tensioner. 3. Remove the (A) three nuts and the (B) three bolts and remove the outer engine front cover. 4. Raise and support the vehicle. 5. Remove the RH engine splash shield. 6. Remove the bolt and the crankshaft pulley. 7. Align the timing marks. 8. Remove the timing belt. 1 Use an 8 mm Allen wrench and turn counterclockwise. 2 Insert a suitable holding tool to lock the timing belt tensioner in place. 3 Remove the timing belt. 9. Inspect the belt for signs of oil contamination. Installation 1. NOTE: Install the timing belt over the sprockets in a counterclockwise direction starting at the crankshaft. Keep the belt span from the crankshaft to the camshaft tight while installing the timing belt over the camshaft. Install the (A) timing belt and remove the (B) holding tool to release the (C) timing belt tensioner. 2. Rotate crankshaft two times and recheck the timing marks. 3. Install the crankshaft pulley. 4. Install the RH engine splash shield. 5. Lower the vehicle. 6. Install the outer engine front cover. 7. Install the drive belt tensioner and drive belt. 8. Connect the battery ground cable.
Filed Under (Ford) by admin on 08-02-2011
Drive Belt, Serpentine NOTE: Minor cracks in the V-grooved portion of the serpentine drive belt are considered normal and acceptable. If the drive belt (8620) has chunks missing from the ribs, the drive belt should be replaced. NOTE: When installing drive belts on pulley, make sure that all V-grooves make proper contact with pulleys. Conditions requiring drive belt replacement are excessive wear, rib chunkout, severe glazing, frayed cords, etc. Replace any drive belt that exhibits any of these conditions. Removal 1. WARNING: USE CAUTION WHEN REMOVING OR INSTALLING DRIVE BELT TO MAKE SURE THAT TOOL DOES NOT SLIP. Using a 15 mm socket or wrench on bolt, attach drive belt tensioner pulley. Rotate drive belt tensioner (6B209) clockwise to remove drive belt from pulleys. Pulley Routing, Accessory Drive Belt — 3.8L Engine Installation 1. Install drive belt over all pulleys (except drive belt tensioner). 2. Rotate drive belt tensioner as described under Removal to install drive belt over drive belt tensioner pulley. Make sure that all V-grooves make proper contact with pulleys.
Filed Under (Chrysler) by admin on 01-12-2010
SERPENTINE BELT SLIPS OFF IDLER PULLEY Model(s): 1996-1999 Chrysler (NS) Town & Country 1996-1999 Dodge (NS) Caravan 1996-1999 Plymouth (NS) Voyager 1996-1999 Chrysler (GS) Voyager (International Market) SYMPTOM/CONDITION Loss of power steering assist and occurs when driving through deep snow or standing water. Snow or rain can enter the engine compartment from underneath the vehicle and force the serpentine belt off of the idler pulley. DIAGNOSIS Visually inspect the serpentine belt and idler pulley to determine if mis-alignment exists (If the serpentine belt is off the pulleys install the serpentine belt). Start the engine and let it run for one minute before checking alignment). The belt should be approximately 2mm (0.08 in.) from the inboard edge of the idler pulley (Fig. 1 ) when alignment is correct and this bulletin does not apply. If the belt and pulley appear as in Fig. 2 , perform the REPAIR PROCEDURE . REPAIR PROCEDURE This repair is compatible with DaimlerChrysler’s Mobile Service Program and does not require hoists or other full service facility special equipment. 1. Remove the serpentine belt from around the idler pulley by rotating the tensioner clockwise (Fig. 3 ). 2. Remove the purge duty cycle solenoid and wiring harness from the right side engine mount. 3. Remove the two right side engine mount insulator vertical fasteners and loosen the horizontal fastener. DO NOT remove the large nut in the center of the core of the insulator (Fig. 4 ). 4. Remove the load on the engine mount by carefully supporting the engine with a floor jack. 5. Remove the vertical and horizontal fasteners from the engine side bracket. Remove the engine mount assembly. 6. Remove the idler pulley from the engine mounting bracket. (Fig. 3 ). 7. Remove the engine mounting bracket. 8. Install a new engine mounting bracket. Torque the fasteners to 40-68 N.m (30-50 ft-lbs.). 9. Install the idler pulley to the engine mounting bracket. Torque the fastener to 40-68 N.m (30-50 ft-lbs.). 10. Properly route and position a serpentine belt onto all pulleys except the idler pulley (Use a new belt if there is any evidence of damage to the original one). 11. Rotate the belt tensioner clockwise until the belt can be installed onto the idler pulley. Slowly release the belt tensioner. 12. Install the engine mount; torque the assembly in the following order, engine mount to rail fasteners 68 N.m (50 ft-lbs.), vertical fastener 102 N.m (75 ft-lbs.), and horizontal fastener 150 N.m (111 ft-lbs.). 13. Install the purge duty cycle solenoid to the engine mount. 14. Start the vehicle and let it run for one minute then turn the engine off. 15. Verify the serpentine belt is properly aligned (Fig. 1 ).