Isuzu NHR 4J Series, Workshop Manual

Page: 75 / 406

6A – 8 GENERAL ENGINE MECHANICAL
3) Spring lower seat
4) Valve stem oil seal
• Install a new oil controller in the valve.
• Guide using special tool
Oil seal installer: 5-8840-2003-0
5) Valve
• Apply engine oil to the outside of the valve stem before
installing it.
6) Valve Spring
• Attach the valve spring to the upper spring seat.
CAUTION
•
The painted area of the valve spring should be
facing downward.
•
Apply compressed air to cylinder from the glow
plug hole to hold the valve in place.
•
Install split collar by special tool.
Valve spring compressor: 9-8523-1423-0 (J-29760)
7) Split Collar
• Use a spring compressor to push the valve spring into
position.
• Install the spring seat split collar.
• Set the split collar by tapping lightly around the head of
the collar with a rubber hammer.
Valve spring compressor: 9-8523-1423-0 (J-29760)
5. Push Rod
4. Rocker Arm Shaft and Rocker Arm
• Tighten rocker arm shaft fixing bolts
N ∙ m (kg ∙ m/lb ∙ ft)
54 (5.5/40)
3a. Glow Plug and Glow Plug Connector (4JB1/4JB1T
only)
3. Glow Plug and Glow Plug Connector
• Tighten glow plugs
N ∙ m (kg ∙ m/lb ∙ ft)
23 (2.3/17)
6A-7-3.tif
6A-8-1.tif
6A-8-2.tif