Volvo D 20 Service Manual page 68

Group 21 Engine
Timing gear belts, replacement
L24
lnstall camshaft rear sprocket and belt
Tighten center bolr by hand, it shoutd be possibte to
turn sprocket on camshaft.
L25
Set belt tension
Adjust tension by moving pump.
Use gauge 5197 to check tension. Attach gauge lo belt
and set to 12.5 units. Stretch belt until mark on gauge
plunger is flush with sleeve-
Depress bell strongly with hand and rechecUadjustten-
i
0la
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r)
L26
Sel pump and tighten camshaft rear sprocket
Use5199ro hold sprocket. Torque wrench should be al
right angles to wrench 5201 otheMise torque wiL be
Using 5199, turn spro€ket slowly clockwise until dial
D 2 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - . . . . - . . . . . . . 0 . 8 0 m m = 0 . 0 3 1 5 i n
D 24 .................................................
0.70 mm : 0.0276 in
D 2 4 U S A / C a n a d a 1 9 7 9 1 9 8 1 . . . . . . . . . 0 . 7 0 m m = 0 - 0 2 7 6 i n
'I 982-.................
0-85 mm = 0.0335 in
Hold sprocket in this position and torque bolt to 100 Nm
(73ft lbs). Take care that camshaft and sprocket do not
L27
d), I
t)r I
I
I
6 6
Remove stop 5193 {rom pump gear