Isuzu NHR 4J Series, Workshop Manual

Page: 109 / 406

6A – 42 GENERAL ENGINE MECHANICAL
NOTE:
Timing belt tension must be adjusted.
Failure to adjust the timing belt tension will result in
timing belt damage.
*
Tighten the tension bolt.
11
Rotate the crankshaft 45 degrees counterclockwise.
NOTE:
Never rotate the crankshaft clockwise when adjusting
the timing belt.
12
Readjust the timing belt tension.
Refer to Step 9
This will remove any remaining timing belt slack.
13
Tighten the tensioner bolt to the specified torque.
Tensioner Bolt Torque N ∙ m (kg ∙ m/lb ∙ ft)
76 (7.7/56)
14
Tighten the tension adjusting lever nut and bolt.
NOTE:
If on-vehicle timing belt replacement is performed, the
crankshaft must not be allowed to turn.
If the crankshaft is allowed to turn, piston and valve
damage will result.
5) Flange: Camshaft Pulley
4) Flange: Injection Pump Pulley
•
Install the timing pulley flange to the camshaft and
injection pump timing pulley.
• Tighten the timing pulley flange bolts to the specified
torque.
Timing Pulley Flange Bolt Torque N ∙ m (kg ∙ m/lb ∙ ft)
19 (1.9/14)
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