Isuzu NPR 4J Series User Manual

6A – 2 GENERAL ENGINE MECHANICAL
CYLINDER HEAD
NOTE:
• During disassembly, be sure that the valve train
components are kept together and identified so
that they can be re-installed in their original
locations.
• Before removing the cylinder head from the engine
and before disassembling the valve mechanism,
make a compression test and note the results.
DISASSEMBLY
1. Thermostat Housing Assembly
2. Injection Nozzle Holder (4JG2)
2a. Injection Nozzle Holder (4JB1, 4JB1TC)
1) Remove the nozzle holder bracket nuts.
6A-2-1.tif
6A-2-2.tif
(4JB1)
Disassembly steps
1. Thermostat housing Assembly
2. Injection nozzle holder (4JG2)
2a. Injection nozzle holder (4JB1
・
4JB1TC)
3. Glow plug and plug connector
(4JG2)
3a. Glow plug and plug connector
(4JB1
・
4JB1TC)
4. Rocker arm shaft and rocker arm
5. Push rod
6. Cylinder head
Reassembly steps
To reassemble, follow the
disassembly steps in the reverse
order.

Isuzu NPR 4J Series Specifications

General

Brand	Isuzu
Model	NPR 4J Series
Category	Engine
Language	English