d) Tighten nuts and bolts.
3.
Lubricate the camshaft bearings.
4.
Insert the camshaft into the cylinder block
a) Release the push rods and tappets if the push rods and tappets have been hold in position.
5.
Fit the idler gear stud and the idler gear.
a) Fit the idler gear stud.
b) Make sure that the timing marks are in
the correct position.
c) Rotate the idler gear shaft so that the
front cover screw holes are vertical
aligned (arrowed in the figure).
d) Fit the washer.
e) Tighten the bolts to the 180 Nm torque.
6.
Engines with heavy duty PTO: Fit the small
idler gear.
a) Tighten the shaft fastening screw (use
12.9 screws with locking compound) to
45 Nm.
7.
Fit the high-pressure pump and gear wheel.
a) See the timing mark position.
8.
Tighten the camshaft and high-pressure
pump gear nuts to the correct torque.
Fig. 66
9.
Check the tooth backlash.
Correct tooth backlash is 0.05 - 0.25 mm.
NOTE: If the oil deflector ring was removed
from the front of the crankshaft, fit the oil
deflector ring before installing the front
cover.
10.
Fit the timing gear casing front cover.
a) Fit the drive unit cover and shaft to the
front cover (broad timing gear).
b) Fit the timing gear casing front cover
using sealant (e.g. Loctite 574).
c) Tap the tension pin to position (narrow
timing gear).
d) See the sealing rings under the idler gear
screws.
e) Fit the drive unit rear bearing and adapter
plate (broad timing gear).
f) Tighten nuts and bolts.
Fig. 67
3. Maintenance
4th Generation Engines 3-41
8370 79492
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