Isuzu N-Series. Manual — part 501
Engine Mechanical (4HK1-TC) 6A-109
• Apply enough engine oil on the piston ring, ring
groove and piston side surface.
• Dislocate the piston ring joint so that (1) is 1st
ring, (3) is 2nd ring and (2) is oil ring, as shown
in the drawing.
• Face the piston front mark cut to forward, use
the piston ring compressor to insert the piston
in the cylinder liner.
Caution:
• Be sure not to make the connecting rod touch the oil
jet when pushing in the piston.
• Be sure not to damage the inside of the liner when
pushing in the piston.
Special tool
Piston ring compressor: 5-8840-9018-0
(J-8037)
3. Install the connecting rod cap.
• Install the bearing on the connecting rod cap
and apply engine oil.
• Install the cap, matching the numbers (1, 2, 3,
4) of the caps and connecting rods.
Legend
1. Back and Top Recognition Boss
2. Big End Hole Diameter Grade Mark
3. Cylinder Number
• Apply molybdenum disulfide on the screw part
and the setting face of the tightening bolt and
tighten it with the designated torque.
• Tighten two bolts alternately in each step.
Tighten:
Tightening bolt to
1st step: 39 N
⋅m (4.0 kg⋅m/29 lb⋅ft)
2nd step: 60
° (degrees)
3rd step: 30
° (degrees)
Special tool
Angle gauge: 5-8840-0266-0 (J-45059)
Caution:
Make sure that the crankshaft smoothly rotates.
N6A6211E
1
1
2
3
N6A6648E
6A-110 Engine Mechanical (4HK1-TC)
4. Install the cylinder head.
Refer to “Cylinder Head”.
5. Install the camshaft assembly.
Refer to “Camshaft Assembly”.
6. Install the rocker arm shaft assembly.
Refer to “Rocker Arm Shaft Assembly”.
7. Install the cylinder head cover.
Refer to “Cylinder Head Cover”.
8. Install the oil pan.
Refer to “Oil Pan”.
Torque Specifications
N6A6212E
1st
2nd
3rd
39 (4.0 / 29)
60
30
N6A6646E
Engine Mechanical (4HK1-TC) 6A-111
Special Tool
Illustration
Tool Number /
Description / Remarks
5-8840-2340-0
(EN-47682)
Connecting Rod Bush
Replacer
5-8840-9018-0 (J-8037)
Piston Ring compressor
5-8840-0266-0 (J-45059)
Angle Gauge
6A-112 Engine Mechanical (4HK1-TC)
Flywheel
Component
Legend
1. Flywheel Housing
2. Flywheel Assembly (MT)
3. Washer
4. Clutch Assembly (MT)
5. Clutch Pressure Plate Assembly (MT)
6. Pilot Bearing (MT)
7. Crankshaft Position Sensor
8. Flexible Plate (Smoother)
9. Crankshaft End Spacer (Smoother)
Removal
1. Remove the starter motor.
• Remove the earth cable of the starter motor.
N6A6214E
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