3.9 Timing gear assembly
3.9.1 Removing timing gear casing
Since the bottom face of the timing gear casing forms a part of the mating face of the oil sump gasket, the
casing cannot be removed without first removing the oil sump (or the engine).
Procedure
1.
Drain the engine oil and remove the oil sump.
2.
Remove the radiator, fan, alternator, belt tensioner and belt.
If the engine is equipped with an air compressor or air conditioner, it must be removed.
3.
Flexonic driven coolant pump must also be removed.
4.
Remove the crankshaft belt pulley and vibration damper.
5.
Loosen the crankshaft nut about two turns
with the spanner.
Fig. 63
(1) Spanner for crankshaft nut 9024 55800
6.
WARNING:
Risk of serious injury. The
crankshaft hub can throw
dangerously when the nut is
loosened. Do not remove the
nut completely at first.
Remove the hub from the crankshaft with
puller. Take off the puller, open the nut and
remove the hub.
Fig. 64
(1) 33-49 engines: Crankshaft hub puller 9201
82390 66-98 engines: Crankshaft hub puller
9104 53300
3. Maintenance
4th Generation Engines 3-39
8370 79492