Oil Cooler Inspection; Oil Cooler Installation - Isuzu NHR 4J Series Workshop Manual

INSPECTION
Relief Valve
1. Attach an oil pressure gauge to the oil gallery near the
oil filter.
2. Start the engine to check the relief valve opening
pressure.
Relief Valve Opening Pressure
Type1
Type2
6A1-13-1.tif
Oil Cooler
Check for water leakage at the water passage.
1. Plug one side of the oil cooler water passage.
2. Submerge the oil cooler in water.
3. Apply compressed air (2 kg/cm
the other side of the oil cooler water passage.
If air bubbles rise to the surface, there is water
leakage.
6A1-13-2.tif
INSTALLATION
3. Oil Cooler
• Install the O-ring to oil filter body and set the oil cooler.
2. Oil Cooler Fixing Bolt
Oil Cooler Bolt Torque
1. Water Hose
• Connect water hose.
6A1-13-3.tif
4JB1/4JB1T/4JB1TC/4JG2 – ENGINE 6A1 – 13
559-618 (5.7-6.3/81.0-89.6)
422-461 (4.3-4.7/61.1-66.8)
29 (3.0/22)
2
kPa (kg/cm /psi)
2
(28.5psi/196.0kPa)) to
N∙m (kg∙m/lb∙ft)