BMW 5-Series (E34) Repair Manual 525i, 530i, 535i, 540i, Touring 1989-1995

• BMW 525i
• BMW 530i
• BMW 535i
• BMW 540i
• BMW Touring

• 525i (M20 with DME 1.3) 1989-1990
• 525i (M50 with DME 3.1) 1991-1992
• 525i (M50TU/VANOS with DME 3.3.1) 1993-1995
• 530i (M60 with DME 3.3) 1994-1995
• 535i (M30 with DME 1.3) 1989-1993
• 540i (M60 with DME 3.3) 1994-1995

• Manual (remove, install, external service): Getrag 260/5 and 260/6 | Getrag S5D 250G | Getrag S6S 560G



• Automatic (remove, install, external service): ZF 4HP22/EH | A4S 310R (THM-R1) | ZF A5S 310Z | ZF A5S 560Z

OIL PUMP

The oil pump is mounted to the bottom of the cylinder block inside the engine oil pan. When the engine is running, oil is drawn from the oil pan by the oil pump's pickup tube and circulated through the engine.

To remove and install oil pump

1. Remove the oil pan as described earlier.



2. On M30, M50 and M60 engines, remove the oil pump sprocket mounting nut. See Fig. 10. Lift the sprocket off together with the drive chain.


NOTE! On M50 engines, the oil pump sprocket nut has left hand threads.


3. Remove the oil pump mounting bolts and withdraw the pump. Note any spacers between pump and engine block.



4. On M60 engines, remove the two oil pipes from the engine block. Inspect the O-rings on the pipes and replace if crushed or deformed. See Fig. 11.



5. Remove the oil pump cover and check for wear or scoring. Spin the oil pump shaft and check that the gears turn smoothly. If the gears spin with difficulty or any wear is present, the pump should be replaced.

FINAL DRIVE, REMOVING AND INSTALLING

The final drive unit is supported at three points on the suspension crossmember through rubber bushings. New self locking nuts should always be used when re-attaching the drive shaft to the final drive.

1. Raise rear of car and support it securely.



2. Drain oil from final drive unit, as necessary. See Final drive oil, replacing.



3. Make matching marks on driveshaft and final drive input flange. Remove bolts and nuts that hold driveshaft to final drive. Push driveshaft forward slightly and suspend from body with stiff wire.


CAUTION! Do not let the driveshaft or drive axles hang unsupported. Damage to the driveshaft center bearing or drive axle outer CV joint could result.


4. Disconnect drive axles from final drive and suspend from body with stiff wire. See 330 Rear Suspension.



5. Place jack beneath final drive unit and support weight of unit.



6. Remove front final drive mounting bolt. See Fig. 2.



7. Disconnect wires for speedometer pulse sender and remove wiring harness and connector from final drive housing.



8. Remove rear final drive mounting bolts (left and right). See Fig. 2.

• General Data and Maintenance
• Fundamentals for the Do-It-Yourself Owner
• Maintenance Program
• Engine
• Engine Removal and Installation
• Cylinder Head Removal and Installation | Cylinder Head and Valvetrain
• Camshaft Timing Chain | Camshaft Timing Belt
• Lubrication System
• Ignition System - DME
• Battery, Starter, Alternator
• Fuel Injection - DME
• Fuel Tank and Fuel Pump
• Radiator and Cooling System
• Exhaust System
• Transmission
• Manual Transmission | Clutch
• Automatic Transmission
• Gearshift Linkage | Driveshaft
• Suspension,Steering and Brakes
• Front Suspension | Steering and Wheel Alignment
• Rear Suspension | Final Drive
• Brakes
• Body
• Fenders, Engine Hood | Doors | Trunklid, Tailgate
• Exterior Trim, Bumpers
• Interior Trim
• Central Locking
• Seats
• Electrical System | Fuses and Relays
• Wipers and Washers
• Switches and Electrical Accessories | Instruments| Radio
• Exterior Lighting
• Heating and Air Conditioning
• Equipment and Accessories
• Seat Belts | Airbag System (SRS)
• Wiring Diagrams