Isuzu KB P190. Service 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.
RTW56ASH006701
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.
RTW56ASH006801
Installation
1. Check the crankshaft to make the No. 1 cylinder
meet the compression TDC.
RTW76ASH001301
Legend
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.
RTW56ASH007001
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.
RTW56ASH018401
4. Check that the alignment marks (camshaft bearing
cap and camshaft) are aligned.
RTW56ASH006901
Legend
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
RTW56ALF001301
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
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