Crankshaft Pulley - Check - Perkins 1104D NH1 Systems Operation Testing And Adjusting

76
Testing and Adjusting Section
Illustration 75
5. Measure the end play on idler gear (2). Refer
to Disassembly and Assembly, "Idler Gear
- Install" for the correct procedure. Refer to
Specifications, "Gear Group (Front)" for the end
play measurement.

Crankshaft Pulley - Check

The crankshaft pulley is installed on the front of the
crankshaft. There are two types of crankshaft pulley
that can be installed to the engine.
Illustration 76
A standard pulley
(1) Bolt
(2) Thrust block
(3) Crankshaft pulley
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Illustration 77
Typical example of a crankshaft pulley with poly v-belt
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(1) Bolt
(2) Thrust block
(3) Crankshaft adapter
(4) Crankshaft pulley
(5) Bolt
Replace the crankshaft pulley if any of the following
conditions exist:
•
There is any impact damage to the outer casing.
•
There is leakage of the viscous fluid from the cover
plate.
•
There is movement of the pulley.
•
There is a large amount of gear train wear that is
not caused by lack of oil.
•
Analysis of the engine oil has revealed that the
front main bearing is badly worn.
•
The engine has had a failure because of a broken
crankshaft.
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Check the areas around the holes for the bolts in
the crankshaft pulley for cracks or for wear and for
damage.
Use the following steps in order to check the
alignment and the runout of the crankshaft pulley:
1. Remove any debris from the front face of the
crankshaft pulley. Remove any debris from the
circumference of the crankshaft pulley.
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