Isuzu NPR 4J Series - Page 200

4JB1/4JB1T/4JB1TC/4JG2 – ENGINE 6A1 – 65
4a. Timing Belt (Belt Drive Model)
1) Cooling fan assembly
2) Crankshaft damper pulley
3) Timing pulley upper cover
4) Timing pulley lower cover
5) Flange: camshaft pulley
6) Flange: injection pump pulley
7) Timing belt
Above works refer to “TIMING BELT (Belt Type)”
Section in this manual.
8) Camshaft timing pulley
• Use a dial indicator to measure the camshaft end play.
This must be done before removing the oil pump.
If the camshaft end play exceeds the specified limit,
the camshaft and/or the driven gear must be replaced.
Camshaft End Play mm(in)
Standard Limit
0.08 (0.003) 0.20 (0.008)
• Install the stopper bolt
!
to the timing pulley to
prevent the pulley from turning.
• Loosen the center bolt.
• Use the timing pulley puller
"
to remove the pulley.
Timing Pulley Puller: 5-8840-0086-0
• Remove the stopper bolt.
6A1-65-1.tif
6A1-65-2.tif
6A1-65-3.tif