Isuzu NPR 4J Series - Crankshaft Front Oil Seal (Gear Drive Type) Installation

6A1 – 72 4JB1/4JB1T/4JB1TC/4JG2 - ENGINE
6. Front Oil Seal
• Use a plastic hammer and a screwdriver to top around
the oil seal to free it from the gear case cover.
Take care not to damage the oil seal fitting surfaces.
INSTALLATION
6. Front Oil Seal
• Use the installer to install the front oil seal !
to the
gear case cover
"
.
Oil Seal Installer: 5-8840-2061-0
Note the oil seal installation depth
#
shown in the
illustration.
Depth
#
= 1 mm (0.039 in.)
5. Crankshaft Damper Pulley
Tighten the crankshaft damper pulley bolt to the specified
torque.
NOTE:
Hold the flywheel ring gear stationary to prevent the
crankshaft from turning when tightening the damper
pulley.
Pulley Boss Bolt Torque N∙m (kg∙m/lb∙ft)
206 (21/152)
4. Cooling Fan Assembly
• Mount fan pulley, distance piece, and cooling fan asm
(in this order) on the water pump, and tighten to the
specified torque.
N∙m (kg∙m/lb∙in)
8 (0.8/69)
3. AC Generator Drive Belt
• Install AC Generator drive belt and adjust belt tension.
• Refer to Drive Belt Adjustment in this section.
2. Power Steering Pump Drive Belt
• Install power steering pump drive belt and adjust belt
tension.
• Refer to “Drive Belt Adjustment” in this section.
1. Fan Shroud
• Install the fan shroud and reservoir tank hose.
• Pour coolant
• Start the engine and check coolant leakage.
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