Isuzu KB P190. Manual — part 356

6A-64 ENGINE MECHANICAL (4JK1/4JJ1)

3. Install the sub gear assembly.

• Clamp the camshaft in a vise. Insert soft metal

protectors (aluminum) between the vise

surfaces and the camshaft. Press against the

pin on the left side of the camshaft gear spring

(3) to make a gap on the right side of the

spring. Push the spring into place.

• Align the sub gear pin (2) with the hole in the

right side of the camshaft gear damper spring

(3). Press the sub-gear into place.

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Legend

1. Snap

Ring

2. Sub-gear

3. Damper

Spring

4. Camshaft

Gear

• Use a pair of snap ring pliers to snuggly install

the snap ring.

4. Tighten sub gear setting bolt.

• Use 5-8840-2591-0 to turn sub gear to right

direction until it aligns with the M5 bolt hole

between camshaft driven gear and sub gear.

• Tighten the M5 bolt to a suitable torque to

prevent the sub-gear from moving.

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Installation

1. Check the crankshaft to make the No. 1 cylinder

meet the compression TDC.

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1. TDC

ENGINE MECHANICAL (4JK1/4JJ1) 6A-65

2. Install the camshaft assembly.

• Align timing mark on intake camshaft and

exhaust camshaft to idle gear D.

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Legend

1. Exhaust Camshaft Gear

2. Intake Camshaft Gear

3. Idle Gear D

3. Camshaft bearing caps, tighten ten bolts on one

side bank to the specified torque.
• Apply engine oil to camshaft journal and

bearing surface of camshaft bearing caps.

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4. Check that the alignment marks (camshaft bearing

cap and camshaft) are aligned.

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1. Align mark on intake camshaft and exhaust

camshaft to mark of bearing cap

• Apply engine oil over the screw part and tighten

up the bearing cap with the prescribed torque.

Tightening torque: 18 N

⋅⋅⋅⋅m (1.8kg⋅⋅⋅⋅m / 13 lb ft)

5. Remove the M5 lock bolt of fixing sub gear.

6. Adjustment of valve clearance.

• Refer to installation procedure for inspection /

adjustment of valve clearance in this manual.

7. Install the baffle plate. Tighten the bolts to the

specified torque.

Tightening torque: 10 N

⋅⋅⋅⋅m (1.0 kg⋅⋅⋅⋅m/87 lb in)

8. Install the cylinder head cover.

Refer to "Cylinder Head Cover".

9. Install the engine cover.

6A-66 ENGINE MECHANICAL (4JK1/4JJ1)

Torque Specifications

RTW56AMF001701

Special Tools

ILLUSTRATION

PART NO.

PART NAME

5-8840-2591-0

Camshaft gear tool

ENGINE MECHANICAL (4JK1/4JJ1) 6A-67

Valve Stem Seal and Valve Spring

Components

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Legend

1. Exhaust Rocker Arm Shaft Assembly

2. Bolt

(Long)

3. Bolt

(Short)

4. Intake Rocker Arm Shaft Assembly

5. Fuel Injector Assembly

6. Bolt

7. Fuel Injector Clamp

8.

Pin

9. Spring Lower Seat

10. Valve Stem Oil Seal

11. Valve Spring

12. Spring Upper Seat

13. Split Collar

14. Valve Stem End Cap