1998 ISUZU TROOPER Service Repair Manual

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Page 1041 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6A±85
ENGINE MECHANICAL
Cylinder Block
Cylinder Block and Associated Parts
012RW010
Legend
(1) Cylinder Head Assembly
(2) Cylinder Head Gasket
(3) Crankcase with Oil Pan
(4) Oil Pipe and O-Ring
(5) O

Page 1042 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6A±86
ENGINE MECHANICAL
11. Remove rear oil seal retainer assembly.
12. Remove main bearing cap.
13. Remove crankshaft.
14. Remove cylinder block.
Inspection and Repair
1. Remove the cylinder head ga

6A±86
ENGINE MECHANICAL
11. Remove rear oil seal retainer assembly.
12. Remove main bearing cap.
13. Remove crankshaft.
14. Remove cylinder block.
Inspection and Repair
1. Remove the cylinder head gasket and any other
material adhering to the upper surface of the cylinder
block. Be very careful not to allow any material to
accidentally drop into the cylinder block. Be very
careful not to scratch the cylinder block.
2. Carefully remove the oil pump, rear oil seal retainer,
and crankcase assembly installation surface seal.
3. Wipe the cylinder block clean.
4. Visually inspect the cylinder block. If necessary, use a
flaw detector to perform a dye penetrate and
hydraulic (or air pressure) test. If cracking or other
damage is discovered, the cylinder block must either
be repaired or replaced.
Flatness
1. Using a straight±edge and feeler gauge, check that
the upper surface of the cylinder block is not warped.
CAUTION: Be very careful not to allow any material
to accidentally drop into the upper surface of the
cylinder block. Be very careful not to scratch the
upper surface of the cylinder block.
2. The cylinder block must be reground or replaced if the
warpage exceeds the limit.
Warpage
Limit : 0.15 mm (0.0059 in)
Maximum repairable limit: 0.15 mm (0.0059 in)
012RS004
Cylinder Bore
Use a cylinder gauge to measure the cylinder bore
diameter in both the axial and thrust directions. Each
measurement should be made at six points.CAUTION: Be very careful not to allow any material
to accidentally drop into the upper surface of the
cylinder block. Be very careful not to scratch the
upper surface of the cylinder block.
Cylinder Bore Inside Diameter
Limit : 93.530 (3.6823)
If the measurement exceed the specified limit, the
cylinder block must be replaced.
Diameter
Grade A : 93.400 mm±93.410 mm
(3.6772 in±3.6776 in)
Grade B : 93.411 mm±93.420 mm
(3.6776 in±3.6779 in)
Grade C : 93.421 mm±93.430 mm
(3.6780 in±3.6783 in)
012RS005
NOTE: For information on piston diameter, please refer
to the section ºInspection of the Piston and Connecting
Rod Assemblyº in this manual.
The ºGradeº mark (1) is stamped at the position
illustrated.

Page 1043 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6A±87
ENGINE MECHANICAL
012RS006
Reassembly
1. Install cylinder block.
2. Install crankshaft.
Install the main bearings to the cylinder block and
the main bearing caps.
Be sure that they are positi

Page 1044 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6A±88
ENGINE MECHANICAL
015RW001
4. Install flywheel
1. Thoroughly clean and remove the oil from the
threads of crankshaft.
2. Remove the oil from the crankshaft and flywheel
mounting faces.
3. Mount

Page 1045 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6A±89
ENGINE MECHANICAL
012RS007
7. Install cylinder block side bolts (1) and tighten
crankcase bolts in sequence shown in the illustration.
Torque : 39 N´m (4.0 Kg´m/29 lb ft)
012RW005
8. Install

Page 1046 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6A±90
ENGINE MECHANICAL
Main Data and Specification
General Specification
ItemSpecificationsItem6VD16VE1
Engine type, number of cylinders and arrangementWater cooled, four cycle V6
Form of combustion

Page 1047 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6A±91
ENGINE MECHANICAL
Torque Specifications
Ignition coil, Spark plug, Crankshaft angle sensor and Under cover

Page 1048 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6A±92
ENGINE MECHANICAL
Cylinder head cover, Cylinder head, Camshaft bracket, Common chamber, EGR valve and EGR pipe

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