23 00 022 Removing And Installing Transmission (S5D 200G, S5D 250G): Installation:
Apply thin coat of grease to selector rod. Grease, refer to BMW Service Operating Fluids .
Release nuts, remove clutch slave cylinder. Pressure line remains connected.
Tightening torque, 21 52 5AZ. Refer to 21 52 CLUTCH OPERATION (HYDRAULIC) .
Pull wires off reverse-gear switch.
Detach oxygen-sensor plug from bracket.
Remove cross tube.
Roadster: Remove reinforcement bracket.
M40 engine: remove heater bulkhead. Unscrew cable duct from rear end of engine. Mount special tool 00 0 200 and hook it into the eye on the crankcase. Tighten spindle (1).
M50/ M52 engine: remove heater bulkhead. Unscrew injection pipe cover (1). Screw special tool 11 0 030 down through intake manifold and into bracket of crankcase. Fit special tool 00 0 200 and attach to special tool 11 0 030. Tighten spindle (2).
M41/M43 engine: attach special tool 11 8 022 to left and right control arms.
Tighten down knurled screws until special tool 11 8 022 contacts engine oil sump.
Support transmission with a workshop hoist.
Unfasten screws and remove cross member with rubber mount.
Lower workshop hoist.
Tightening torque 23 71 1AZ/2AZ. Refer to 23 71 TRANSMISSION MOUNTS .
M40/ M42/ M50/ M52 engine: only lower engine and transmission with spindle (2) to such an extent that cylinder head and manifold do not contact engine partition wall or heating connections (visual inspection).
M41/M43 engine: Release knurled screws to lower engine and transmission only to such an extent that cylinder head and manifold do not contact engine partition wall or heating connections (visual inspection).
Use a screwdriver to lift out spring (1) from the lug (2) on the housing and swivel upwards.
Pull out shaft.
Apply thin coat of grease to bearing pin. Grease,refer to BMW Service Operating Fluids .
Support transmission with workshop hoist.
Unfasten screws.
Pull transmission downwards and remove.
Always fit screws with washers.
Tightening torque, 23 00 1 AZ. Refer to 23 00 TRANSMISSION IN GENERAL .
Pay attention to guide sleeves (1 & 2). Replace, if necessary. Ensure correct position of cover plate.
Remove and clean release unit and release lever and grease appropriate points.
Check lubrication of transmission input shaft for sticky consistency. Replace clutch disk if grease is sticky.
Check clutch disk for friction rust in taper splines and replace, if necessary.
Mechanically remove old grease and lining abrasion from the taper splines of the clutch disc (with a cloth).
Clean and grease taper grooves and guide pin of transmission input shaft. The volume of grease required for this corresponds roughly to the size of a grain of corn. Grease, refer to BMW Service Operating Fluids .