Cylinder Head, Retorquing; M 12 Bolts; Install Valve Cover, Plunger And Vacuum Pump - Volvo D 20 Service Manual

Group 21 Engine
Cylinder head, retorquing
M 1 l b o h s = 1 0 h m A l l e n k e y
M11
M 1 2 b o l r s = 1 2 s d e d s o c k e i
P / N 1 1 5 9 0 8 2 - 5 .
J. Cylinder head, retorquing
11s9082
M12
J 1
Remove valve cover, vacuum pump and plunger
Access to one of cylinder head bolts is restricled by
J2
M 11 bolts:
Tighten each boh in turn as indicated according to
1. Slacken bolt 30'
2. Torque to 90 Nm {65 ft !bs)-
M 12 bolts:
T i g h t e n e a c h b o L t i n t u r n a s i n d i c a t e d a c c o r d i n g t o
1 .
A n g l e t i g h t e n b o l t 9 0 ' i n o n e m o v e m e n t w i t h o u t
s i o p p i n g - D o n o t s a c k e n b o l t f i r s t . S e e i l l u s t r a t i o n
i n o p e r a t i o n H 3 8 .
To be carried out after 600-1,200 miles (1,000-2,000 km) on cold or nearlY cold engine
o
ut
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D 2 0
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Install valve cover, plunger and
Check O-rinq, replace if necessary.
J3
vacuum pump
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