Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 571

6A – 122 ENGINE MECHANICAL

5. Crankshaft Thrust Bearing

Apply an ample coat of engine oil to the thrust bearings
before installation.

Install the thrust bearings to the crankshaft center journal.

The thrust bearing oil grooves must be facing the sliding
faces.

6. Crankshaft Bearing Cap With Lower Bearing

Before the crankshaft bearing installation, select the
appropriate bearings in accordance with the description in
CRANK BEARING SELECTION of INSPECTION AND
REPAIR.

1) Apply the recommended liquid gasket or its equivalent

to the No. 5 crankshaft bearing cap

as shown in the

illustration.

2) Install the arch gasket

to the No. 5 bearing cap.

Use your fingers to push the arch gasket into the
bearing cap groove.

Take care not to scratch the arch gasket outer
surface.

3) Apply the recommended liquid gasket or its equivalent

to the No. 5 crankshaft bearing cap cylinder body
fitting surfaces at the points (

) shown in the

illustration.

Note:

Be sure that the bearing cap fitting surface is
completely free of oil before applying the liquid
gasket.

Do not allow the liquid gasket to obstruct the cylinder
thread holes and bearings.

4) Install the bearing caps with the bearing cap head

arrow mark facing the front of the engine.

The bearing cap numbers must be facing up.

5) Apply engine oil to the crankshaft bearing cap bolts.

6) Temporarily tighten the bearing cap bolts.

The bolts will be tightened to the specified torque after
the crankshaft rear oil seal is installed.

ENGINE MECHANICAL 6A – 123

7. Crankshaft Rear Oil Seal

1) Tighten the adapter to the crankshaft rear end section

with 2 bolts.

2) Insert the oil seal into the peripheral section of the

adapter.

3) Insert the sleeve into the adapter section, and 1)

tighten it with a bolt (M12

1.75L = 70) until the

adapter section hits the sleeve.

4) Remove the adapter and the sleeve.

5) With the seal pressed in, check the dimension of the

oil seal section.

Standard Dimension = 12.5

0.3 mm

Oil Seal Installer: 5-8840-2359-0

8. Camshaft

1) Apply a coat of engine oil to the camshaft and the

camshaft bearings.

Install the camshaft to the cylinder body.

Take care not to damage the camshaft bearings.

6A – 124 ENGINE MECHANICAL

9. Timing Pulley Housing (For Belt Drive)

1) Install the timing pulley housing to the cylinder body.

Take care not to twist the front oil seal.

2) Tighten the timing pulley housing together with the

timing pulley housing gasket to the specified torque.

Timing Pulley Housing Bolt Torque

kg·m (lb.ft/N·m)

1.9

0.5 (13.7

3.6/18.62

490)

3) Cut away the flash from the gasket.

10. Oil Seal Retainer

1) Apply engine oil to the oil seal lip of the oil seal

retainer.

2) Apply the recommended liquid gasket or its equivalent

to the reatiner

at the position shown in the

illustration.

Do not apply an excessive amount of liquid gasket.

3) Install the oil seal retainer

4) Tighten the reatiner bolts to the specified torque.

Oil Seal Retainer Bolt Torque

kg·m (lb.ft/N·m)

1.9

0.5 (13.7

3.6/18.62

4.90)

11. Camshaft Timing Pulley

1) Align the timing pulley center

with the camshaft

key.

2) Tighten the timing pulley center bolts to the specified

torque.

Prevent the camshaft from turning when tightening the
timing center.

Timing Center Bolt Torque

kg·m (lb.ft/N·m)

6.5

0.5 (47.0

3.6/63.70

4.90)

3) Align the timing pulley with the timing center knock pin

and then install the timing pulley

to the center.

Install the stopper bolt to the camshaft timing pulley to
prevent it from turning.

4) Tighten the timing pulley bolts to the specified torque.

Timing Pulley Bolt Torque

kg·m (lb.ft/N·m)

0.8

0.2 (5.8

1.4/7.84

1.96)

ENGINE MECHANICAL 6A – 125

12. Piston and Connecting Rod with Upper Bearing

13. Connecting Rod Bearing Cap with Lower Bearing

1) Apply a coat of engine oil to the circumference of each

piston ring and piston.

2) Position the piston ring gaps as shown in the

illustration.

Oil ring

2nd compression ring

1st compression ring

3) Apply a coat of molybdenum disulfide grease to the

two piston skirts.

This will facilitate smooth break-in when the engine is
first started after reassembly.

4) Apply a coat of engine oil to the upper bearing

surfaces.

5) Apply a coat of engine oil to the cylinder wall.

6) Position the piston head front mark so that it is facing

the front of the engine.

7) Use the piston ring compressor to compress the

piston rings.

Piston Ring Compressor: 5-8840-9018-0 (J-8037)

8) Use a hammer grip to push the piston in until the

connecting rod makes contact with the crankpin.

At the same time, rotate the crankshaft until the
crankpin is at BDC.

9) Align the bearing cap cylinder number marks and the

connecting rod cylinder number marks.

The cylinder number marks must be turned toward the
exhaust manifold.

10) Apply a coat of engine oil to the threads and setting

faces of each connecting rod cap bolt.

11) Tighten the connecting rod caps to the specified

torque.

Connecting Rod Bearing Cap Bolt
Torque

kg·m (lb.ft/N·m)

4JA1 / 4JA1T engine

8.5

0.5(61.4

3.6 / 83.3

4.9)

1st step ; 3.0

0.5(21.7

3.6 / 29

4JB1T / 4JG2T /
4JA1TC / 4JH1TC
engine

2nd step ; 45

~ 75

015RY00033

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