1998 ISUZU TROOPER Service Repair Manual

Page 1553 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE MECHANICAL 6A Ð 3
INSPECTION AND REPAIR
Make the necessary adjustments, repairs, and part re-
placements if excessive wear or damage is discovered
during inspection.
·Cylinder head gasket and

Page 1554 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A Ð 4 ENGINE MECHANICAL
Hot plug depression
1. Clean the cylinder head lower side, taking care not to
damage the hot plug surfaces.
2. Use a straight edge and feeler gauge to measure hot
plug depres

Page 1555 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE MECHANICAL 6A Ð 5
2. Place an appropriate metal plate  thick over the hot
plug upper surface à  .
3. Use a press Ä to exert a pressure of 44000-
54000N(4500 Ð 5500 kg) (9923 Ð 12128 lbs

Page 1556 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A Ð 6 ENGINE MECHANICAL
REASSEMBLY
6. Cylinder Head
¥ Refer to Section 6A2 ÒCylinder headÓ
5. Push Rod
4. Rocker Arm Shaft and Rocker Arm
·Tighten rocker arm shaft fixing bolts
3. Glow Plug and

Page 1557 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE MECHANICAL 6A Ð 7
VALVE SPRING, VALVE STEM OIL SEAL, VALVE, VALVE GUIDE, PUSH ROD
DISASSEMBLY
1 Rocker Arm Asembly
2 Split Collar
Using special Tool, compress valve spring
Valve spring compres

Page 1558 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A Ð 8 ENGINE MECHANICAL
At installed
height 38.9mm
(1.5in)StandardN(Kg/lb)
Limit
294.0 (30/66.1)257.9 (26.3/57.9)
Valve spring
CAUTION:
Visually inspect the valve springs and replace them if
damage

Page 1559 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE MECHANICAL 6A Ð 9
1. Valve Guide Clearance
¥Measure the valve stem diameter with a
micrometer.
If the valve stem diameter is less than the specified
limit, the valve and the valve guide must

Page 1560 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A Ð 10 ENGINE MECHANICAL
Valve Guide Replacement
1. Using special tool, drive out the valve guide from the
combustion chamber side.
Valve guide replacer: 9-8523-1212-0
2. Apply engine oil to the out