Group 21 Service procedures - engine
57
Timing gears, fitting
Special tools: 884995, 884997
6
Heat the polygon hub to a temperature of 100°C (212°F).
Fit the hub using drift 884995.
7
1
When the hub has cooled off, torque the crankshaft’s cen-
tral screw to 640 Nm (472.3 ft-lb).
8
Place the vibration damper on the hub before fitting the
timing gear cover.
Fit the crankshaft drive using a key. Use tool 884997.
Tighten until the drive meets the base.
2
Fit all intermediate gears (4pcs). Check that the markings
on the drives match. See figure. Torque the drives to 65
Nm (48 ft-lb).The intermediate gear for the oil pump shall
be torqued to 48 Nm (35.4 ft-lb).
3
Fit the camshaft drive. Check that the marking agrees with
that on the intermediate drive. Torque the drive to 60 Nm
(44.3 ft-lb).
4
Fit the injection pump drive.
Note: If the drive has not been previously marked, the in-
jection pump must be adjusted. Torque the drive to 58 Nm
(42.8 ft-lb) (TAD1631: 65 Nm (48 ft-lb), TD164KAE: 74
Nm (54.6 ft-lb).
5
Grease the crankshaft journal with molybdenum disulfide.
Fit the centering section of drift 884995 on the crankshaft
journal.
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