Isuzu N-Series. Manual — part 590
6A1-48 4JB1/4JB1-TC/4JG2/4JH1-TC - ENGINE
Tighten:
• AC generator fixing bolt to 40 N
⋅m (4.1 kg⋅m / 30 lb⋅ft)
• Adjust plate fixing bolt to 19 N
⋅m (1.9kg⋅m / 1.4 lb⋅ft)
• Adjust plate lock bolt to 19 N
⋅m (1.9 kg⋅m / 1.4 lb⋅ft)
4JG2
19. Heater Core
• Connect the heater hose them tighten the clip se-
curely.
20. Radiator Hose Upper
• Connect the radiator hose them tighten clip secure-
ly.
• Pour coolant.
• Connect the battery ground cable.
• Start the engine and check coolant leakage.
Legend
1. A/C compressor
2. Idle pulley
3. Adjust plate
4. Adjust bolt
5. P/S pump pulley
6. Fan pulley
7. Idle pulley
8. Adjust pulley
9. Crank pulley
10. ACG bolt
11. AC generator
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Legend
1. A/C compressor drive belt
2. P/S pump drive belt
3. AC generator fan pulley
4JB1/4JB1-TC/4JG2/4JH1-TC - ENGINE 6A1-49
OIL PAN
Component
Removal
Preparation
• Disconnect battery ground cable.
• Lift up car.
• Drain engine oil.
Notice:
Install drain plug with new gasket.
Tighten:
• 44 N
⋅m (4.5 kg⋅m / 33 lb⋅ft)
1. Vacuum Pump Oil Hose
• Remove oil hose (1) from oil pan.
Legend
A. Independent suspension (4
× 2)
2. Engine mount bolts
B. Rigid suspension (4
× 2)
3. Stiffener and space rubber
1. Vacuum pump oil hose
4. Oil pan assembly
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6A1-50 4JB1/4JB1-TC/4JG2/4JH1-TC - ENGINE
2. Engine Mount Bolts
• Remove the engine mount bolts right & left side.
3. Stiffener & Space Rubber
• Remove the exhaust pipe bracket.
• Remove the stiffener from of the oil pan left & right
side.
• Take out space rubber.
4. Oil Pan Assembly
• Raising the engine about 50mm.
• Remove the oil pan from cylinder block.
Installation
1. Oil Pan Assembly
• Apply the recommended liquid gasket or its equiv-
alent to the No.5 bearing cap arches, the grooves,
and the timing gear case arches at the positions
shown in the illustration.
• Fit the gasket rear lipped portion into the No.5
groove.
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4JB1/4JB1-TC/4JG2/4JH1-TC - ENGINE 6A1-51
• Be absolutely sure that the lipped portion in fitted
snugly in to the groove.
• Install the oil pan to the cylinder body.
• Tighten the oil pan bolts to the specified torque.
Tighten:
• Oil pan bolt to 19 N
⋅m (1.9 kg⋅m / 14 lb⋅ft)
2. Stiffener and Space Rubber
• Install the space rubber.
• Install the stiffener left side and right side tighten
bolt to the specified torque.
Tighten:
• Engine body side to 37 N
⋅m (3.8 kg⋅m / 27 lb⋅ft)
• Clutch housing side to 78 N
⋅m (8.0 kg⋅m / 58 lb⋅ft)
• Install exhaust pipe bracket.
3. Engine Mount Bolts
• Install the mount bolts and tighten to the specified
torque.
Tighten:
• Mount bolt to 40 N
⋅m (4.1 kg⋅m / 30 lb⋅ft)
• Install the oil hose to oil pan.
4. Vacuum Pump Oil Hose
• Pour engine oil
• Connect battery ground cable.
• Start the engine and check coolant leakage.
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