50
Installing the cylinder head
Special tools:
(998) 9876 Dial indicator
(999) 2479 Stand
2666 Press tool (two)
6239 Lift chain
Clean the cylinder block face, if this has not been done
already. The cylinder block contact surface against the
gasket must be shiny before installing the head.
1.
Check the cylinder liner height.
2.
Before fitting the bolts, immerse them in rust-
proofing, P/N 1161346-0, after which place them
on a net to drip dry. The bolts must be drip-free
before being fitted.
3.
Fit a new gasket, new cylinder head sealing rings
and O-rings for the inlet channel.
4.
Lift the cylinder head into position. Use lift chain
6239 if necessary to guide the head into position.
Fit the cylinder head bolts.
5.
Tighten the bolts in the correct sequence, see in-
structions below under “Tightening-cylinder head
bolts”.
6.
Fit and tighten up the bolts for the inlet and ex-
haust manifolds. Use lock washers to lock the ex-
haust manifold bolts.
7.
Fit the delivery pipes and by-pass fuel pipes to-
gether with ties, washers and brackets.
8.
Fit the push rods, rocker arm mechanism and in-
jectors.
Tightening torque for rocker arm bracket: 40
±
4
Nm (4
±
0.4 kpm).
9.
Adjust the valves, see instructions.
Tightening – cylinder head bolts
Tighten the bolts in stages and in the sequence illustrat-
ed here. Tighten evenly; uneven tightening impairs the
bolting and has a negative effect on the sealing.
1st stage: 50 Nm (5.0 kpm)
2nd stage: 200 Nm (20.0 kpm)
3rd stage; 370 Nm (37.0 kpm)
4th stage: Angle tightening 90
°
, (that is, a 1/4 turn).
Cylinder liner
Cylinder block
2479
2666
2
4
3
1
90˚
0,14 - 0,20 mm
