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Isuzu NPR 4J Series - Page 109

Isuzu NPR 4J Series
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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 Nm (kgm/lbft)
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 Nm (kgm/lbft)
19 (1.9/14)
6A-42-2.tif
6A-42-3.tif
6A-42-4.tif
6A-43-1.tif

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