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 (Isuzu) by admin on 21-09-2010
Removal 1. Disconnect battery ground cable. 2. Remove air cleaner assembly. 3. Remove radiator upper fan shroud from radiator. 4. Move drive belt tensioner to loose side using wrench then remove drive belt. 5. 6. 7. 8. 9. 10. 11. 12. Remove cooling fan assembly four nuts, then the cooling fan assembly. Remove cooling fan drive pulley assembly. Remove idle pulley assembly. Remove serpentine belt tensioner assembly. Remove power steering pump assembly. Remove crankshaft pulley assembly using J-8614-01 crankshaft holder, hold crankshaft pulley remove center bolt, then the pulley. Remove right side timing belt cover then left side timing belt cover. Remove lower timing belt cover 2000 Isuzu Truck VehiCROSS (4WD) V6-3.5L 13. Remove pusher. Caution: The pusher prevents air from entering the oil chamber. Its rod must always be facing upward. 14. Remove timing belt. Caution: 1. Do not bend or twist the belt. otherwise its core could be damaged. The belt should not be bent at a radius less than 30 mm. 2. Do not allow oil or other chemical substances to come in contact with the belt. They will shorten the life. 3. Do not attempt pry or stretch the belt with a screw driver or any other tool during installation. 4. Store timing belt in a cool and dark place. Never expose the belt to direct sunlight or heat. Installation Note: For correct belt installation, the leper on the belt must be able to be read as viewed from the front of the vehicle. 2000 Isuzu Truck VehiCROSS (4WD) V6-3.5L 1. Install timing belt. 1. Align groove of crankshaft timing pulley with mark on oil pump. Align the mark on the crankshaft timing pulley with alignment mark (white dots line) on the timing belt. Secure the belt with a double clip. Note: When timing marks are aligned, No.2 piston will be on top Dead Center.
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 ).
Filed Under (Daewoo) by admin on 05-04-2011
Removal 1. Disconnect negative battery cable. Disconnect intake air temperature sensor connector from intake air duct. Disconnect the air intake tube from the throttle body. Disconnect the breather tube from the valve cover. Remove the air filter housing. 2. Raise and support the vehicle. Remove right front wheel. Remove right front splash shield from wheelwell. Remove serpentine accessory drive belt. 3. Remove crankshaft pulley bolts. It is NOT necessary to remove crankshaft sprocket center bolt. Remove crankshaft pulley. Lower vehicle. 4. Support engine assembly from above with Support Fixture (J-28467-B). See Fig. 1 . Remove engine mount bracket from timing belt end of engine. See Fig. 2 . 5. Remove front timing belt cover. Using crankshaft center bolt, rotate crankshaft one full turn clockwise (as viewed from timing belt end of engine). 6. Align mark on crankshaft sprocket with notch at bottom of rear timing belt cover. See Fig. 3 . Align camshaft sprocket timing marks with notches on valve cover. See Fig. 4 . CAUTION: Engine damage could result if camshaft sprockets are not properly aligned with notches on valve cover. 7. Loosen the automatic tensioner bolt. Use an Allen wrench to rotate tensioner and relieve tension on timing belt. See Fig. 5 . Remove timing belt. Installation 1. Ensure crankshaft and camshaft timing timing marks are still aligned. Install the timing belt. See Fig. 6 . Turn the timing belt tensioner clockwise to tension the timing belt. Turn tensioner until the pointer aligns with the notch on the rear timing belt cover. Tighten automatic tensioner bolt. See TORQUE SPECIFICATIONS . 2. Using crankshaft center bolt, turn crankshaft clockwise (as viewed from timing belt end of engine) 2 full revolutions. Ensure timing belt tensioner pointer is still aligned with notch. 3. If timing belt tensioner is correctly aligned, install timing belt cover. Install the engine mount bracket on the timing belt end of engine. Install crankshaft pulley. Install serpentine accessory drive belt. Install right front splash shield. Install right front wheel. 4. Install air filter housing. Connect air intake temperature sensor connector. Connect negative battery cable.
Filed Under (Dodge) by admin on 19-09-2010
AIR CONDITIONING BELT NOTE: The A/C drive belt self tensioner is NOT a dynamic tensioner. After tensioner adjustment bracket bolts are tightened, the torsion spring is no longer responsible for tensioning the A/C belt. The torsion spring is only used for initial belt tensioning only. REMOVAL 1. Remove generator/power steering belt. Fig. 42 2. Loosen BUT DO NOT REMOVE tensioner locking bolt and pivot bolt (Fig. 42). 3. Insert 1/2″ drive breaker bar into square opening on belt tensioner. Rotate tensioner counterclockwise until belt can be removed from pulleys (Fig. 42). 4. Slowly rotate tensioner clockwise to relieve spring load. INSTALLATION-NEW BELT WARNING: DO NOT REMOVE A/C BELT TENSIONER LOCKING BOLT WITHOUT FIRST HOLDING THE TENSIONER WITH A 1/2″ DRIVE BREAKER BAR, AS PERSONAL INJURY COULD RESULT. Fig. 43 NOTE: Verify that torsion spring position is in the new belt position before installing a NEW belt (Fig. 43). If torsion spring is not in the new belt position, follow steps 1 – 7 to change the tensioner spring from the USED belt position to the NEW belt position. 1. Insert a 1/2″ drive breaker bar into the square opening on the tensioner. Hold counterclockwise pressure on tensioner while removing the locking bolt (Fig. 42). 2. Carefully release spring load of the torsion spring on the tensioner. 3. Remove pivot bolt, tensioner, and spring from front timing cover. 4. Insert spring arm into the NEW belt position on the tensioner (Fig. 43). 5. Install torsion spring, tensioner, and pivot bolt. 6. Install pivot bolt. Tighten only finger tight, at this time. 7. Using a 1/2″ drive breaker bar, apply counterclockwise pressure until locking bolt can be installed.