Alfa Romeo 33 owners manual page 177

text version of content this owner's manual page from owners manual to the vehicle Alfa Romeo 33, year of production 1983 - 1995:

G-EARBOX Trouble Probable cause Corrective action Replace gears Noisy both during accelerationl Differential gears are worn or and deceleration (drive shaft damaged assy already checked) Check and replace, if necessary l Excess play of hypoidgears Tighten l Crown gear securing screws are loose Replace shim l Bevel pinion shim is worn or damaged l Pinion shaft retaining nut is looseCheck gearbox components and then tighten the nut l Excess play in gear train Adjust gear train l Teeth of planetary and side gears Transmission is noisy when in Replace differential casing curve, both with speed engaged are worn, damaged or show evi- or when in neutral (drive shaft dence of pitting assy already checked) Adjust engine idling Transmission is noisy when in l Irregular variations of driving neutral (vehicle is not moving) torque l Not enough oil Fill up to correct level Transmission is noisy when in l Reverse gears are worn or damaged Replace defective parts reverse gear Engagement/disengagement of First of all it should be established if the trouble is caused by the gearbox or by speed is not easy the control system. If the clutch still transmits torque when the pedal is pushed- down, it means that it is not disengaged. Verify if the clutch properly couples (pedal is released) and uncouples (pedal is pushed-down) the engine to the gear- box casing. If clutch is not faulty, the trouble originates either from the gearbox or from the control system. l Bushing on outer speed selectorReplace bushing lever is worn l Gearbox outer linkage needs adjust- Check linkage, joints and controls ing and/or lubrication of joints is insufficient l Stroke of outer linkage parts is notCheck the system and, if necessary, sufficient due to repair or replace worn parts excess play Fill-up to correct level l Not enough oil in gearbox-differ- ential casing Refer to “Synchronizing unit is faulty” l Synchronizing units are faulty Repair or replace defective parts l Inner controls are deformed or worn Speeds become disengaged Replace worn parts l Sleeves and gears are worn or defective Verify adjustment of gear train l Excess end-play of the gear that becomes disengaged (Noisy both during acceleration and deceler- ation) May 1983 13-32

owners manual Alfa Romeo 33

owners manual Alfa Romeo 33 - year of production: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 - Alfa Romeo 33 owners manual EN