Isuzu NKR 4J Series - Crankshaft Rear Oil Seal (Gear & Belt Drive Type) Installation

6A1 – 80 4JB1/4JB1T/4JB1TC/4JG2 - ENGINE
INSTALLATION
3. Rear Oil Seal
• Use the oil seal installer the oil seal to the cylinder
body.
Rear oil seal Install: 5-8840-2359-0
NOTE:
Wipe off rust and scraps clean from the press-in
portion of the oil seal.
Take note of the press-in direction of the oil seal.
1) Install the adapter of the special tool to the rear end of
the crankshaft with two bolts.
2) Install the oil seal to the outer circumference of the
adapter.
3) Insert the sleeve into the adapter portion, and tighten it
in with the bolt (M12x1.75L=70) until the adapter
section hits the sleeve.
4) Remove the adapter and the sleeve.
5) After installing the oil seal, check the measurement of
the oil seal.
Standard mm (in)
12.2 - 12.8 (0.48 - 0.50)
2. Flywheel
• Apply engine oil to fixing bolts.
• Tighten the flywheel bolts to the specified torque in two
steps using the Angular Tightening Method.
Follow the numerical order shown in the illustration.
Flywheel Bolt Torque N∙m (kg∙m/lb∙ft)
1st Step 2nd Step
59 (6.0/43) 60° - 90°
1. Transmission and Clutch Assembly
2) Clutch
"
Driven Plate Assembly
• Apply multi-purpose with MOS2 type grease to the
driven plate hub spline.
• Use the pilot aligner to install the driven plate
assembly.
Pilot Aligner: 5-5825-3001-0
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