Isuzu NHR 4J Series, Workshop Manual

Page: 203 / 406

6A1 – 68 4JB1/4JB1T/4JB1TC/4JG2 - ENGINE
INSTALLATION
7. Camshaft and Tappets
• Apply a coat of engine oil to the tappet and the cylinder
body tappet insert holes.
• Locate the position mark applied at disassembly (if the
tappet is to be reused).
NOTE:
The tappet must be installed before the camshaft.
• Apply a coat of engine oil to the camshaft and the
camshaft bearings.
• Install the camshaft to the cylinder body.
Take care not to damage the camshaft bearings.
6. Oil Pump Assembly
• Prepare a solution of 80% engine oil and 20%
molybdenum disulfide.
• Apply and ample coat of the solution to the teeth of the
oil pump pinion.
• Apply engine oil to oil pipe O-ring and insert the O-ring
in O-ring hold on cylinder block.
• Install oil pump asm with oil pipe in cylinder block and
tighten fixing bolts to the specified torque.
Oil Pump Bolt Torque N ∙ m (kg ∙ m/lb ∙ ft)
19 (1.9/14)
• Tighten sleeve nut to the specified torque.
Sleeve Nut Torque N ∙ m (kg ∙ m/lb ∙ ft)
25 (2.5/18)
5. Oil Pan Assembly
Above works refer to “OIL PAN” Section in this manual.
4a. Timing Belt
8) Camshaft timing pulley
7) Timing belt
6) Flange: injection pump pulley
5) Flange: camshaft pulley
4) Timing pulley lower cover
3) Timing pulley upper cover
2) Crankshaft damper pulley
1) Cooling fan assembly
Above works refer to “TIMING BELT (Belt Type)”
Section in this manual.
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