2007 ISUZU KB P190 engine

6A-38 ENGINE MECHANICAL (C24SE)





Inspection
All parts, if necessary replace.

W hen replacing camshaft, always replace all cam followers.








Installation
Insert hydraulic valve lifter (1) in camshaft housing.

Coat sliding surfaces of rocker arm with Mcs, Paste and insert
in camshaft housing.

Adjust
Adjustment of the hydraulic valve liters is not required.
Pretension is provided by the design.


Installation
1. Remove 5-8840-0457-0 and install the camshaft housing cover.
2. Insert the spark plug connectors.








Tighten (Torque)
Guide plate to camshaft housing.
Insert camshaft with MoS
2 paste.

Installation
1. Install the front seal ring in camshaft housing with 5-8840-0451-0.
2. Install the camshaft housing rear cover.
3. Install the cylinder head.

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ISUZU KB P190 2007

ENGINE MECHANICAL (C24SE) 6A-39







Camshaft Housing, Check for Plane Surface
Clean
Sealing surfaces.

Inspection
Check length and width of sealing surface for deformation and
diagnosis for warpage and use straight edge feeler gauge.

Measure
Height of camshaft housing (sealing surface to sealing
surface).
Dimension I: (74.0 mm)


Cylinder Head, Removal and Installation
Important
Only remove cylinder head with engine cold (room
temperature).



Removal
1. Remove the alternator, power steering and V-belts.



Removal
2. Loosen the fastening bolts from alternator.
3. Loosen the lower alternator fastening bolt by swinging the alternator to the rear.



Removal
4. Remove the front toothed belt cover.
5. Remove the toothed belt from camshaft pulley.
See operation "Timing Check and Adjust".



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ISUZU KB P190 2007

6A-40 ENGINE MECHANICAL (C24SE)




Removal
6. Remove the camshaft housing cover and camshaft pulley by counter-holding at the hex head of camshaft.




Removal
7. Remove the fastening bolts from camshaft housing.



Removal
8. Remove the exhaust pipe from exhaust manifold.
9. Loosen the cylinder head bolts spirally from the outside inwards (first 1/4, then 1/2 revolution).



Removal
1. Remove the camshaft housing from cylinder head.
2. Remove the cam followers, thrust pieces and hydraulic valve lifters.
Note the allocation.
3. Remove the cylinder head.




Clean
Sealing surfaces, bores and threads of cylinder head bolts.

Inspection
Check cylinder head and cylinder block for plane surfface-see
operations “Cylinder Head, Check for Plane Surface” and
“Cylinder Block, Check for Plane Surface.”


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ISUZU KB P190 2007

ENGINE MECHANICAL (C24SE) 6A-41


Installation
1. Install the cylinder head gasket.
Mark "OBEN/TOP" on top and turn it towards timing side of engine.
2. Place cylinder head on cylinder block.

1
2
3


Installation
1. Insert the hydraulic valve lifters (3), thrust pieces (2) and
cam followers (1) with MoS2 paste.
Note allocation.
2. Apply a bead of Sealing Compound TB1207C to sealing surface of cylinder head.
3. Install the camshaft housing on cylinder head.



Torque-Angle Method
Cylinder head and camshaft housing with new cylinder head
bolts to cylinder block.

Cylinder head bolts in sequence shown.



Installation
1. Install the rear toothed belt cover to camshaft housing.
2. Install the camshaft pulley to camshaft.
3. Install the camshaft housing cover to housing.




Installation
1. Install the toothed belt on camshaft pulley.
See operation "Timing Adjust".
2. Install the front toothed belt cover.


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ISUZU KB P190 2007

6A-42 ENGINE MECHANICAL (C24SE)


Installation
1. Install the fastening bolts.
2. Loosen the lower alternator fastening bolt.
3. Install the alternator, power steering and V-belts.




Cylinder Head, Disassemble and Assemble
Removal
1. Remove the hydraulic valve lifters.
Lay aside in installation positions.
2. Remove the spark plugs, exhaust manifold and intake manifold from cylinder head.





Removal
1. Mark valves.
2. Remove the tension valve springs with 5-8840-2594-0 (1).
3. Remove valve keepers, valve spring cap and valve spring.



Removal
1. Remove the valve and valve stem seal.
2. Remove the valve spacer ring (1-exhaust) and valve spring seat (2-intake).
3. Remove valve from cylinder head.

Clean
Sealing surfaces.


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ISUZU KB P190 2007

ENGINE MECHANICAL (C24SE) 6A-43


Inspection
Sealing surfaces for plane surface, guides, sliding and bearing
points for wear-see operation “Cylinder Head. Overhaul”.



Installation
1. Coat the valves with engine oil and insert in cylinder head.
2. Install the valve spacer ring or valve rotator(exhaust) and valve spring seal(intake).
3. Push the accompanying assembly sleeve onto valve stem and coat with engine oil.
4. Insert a new valve stem seal with 5-8840-2601-0 (1).
5. Drive the valve stem seal carefully in to stop with light hammer blow.








Installation
1. Install the valve springs and valve spring caps.
2. Install the tension valve springs with 5-8840-2594-0 (1), valve keeper.

Important!
Note markings made on valves.





Tighten (Torque)
Exhaust manifold and intake manifold with new gaskets to
cylinder head.

Thermostat housing with new seal ring to cylinder head:





Tighten (Torque)
Spark plugs with spark plug wrench to cylinder head.

Installation
1. Coat hydraulic valves lifters (1) with oil.
2. Insert them in cylinder head.
Note installation position.


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ISUZU KB P190 2007

6A-44 ENGINE MECHANICAL (C24SE)








Valve, Grind
Valves can be reused once or twice after regrinding-only if
there are no crater-like burns on the valve cone.
Excessive grinding can cause the upper valve head edge to
become too thin.

Important!
Valve stem protection must not exceed dimension “A”-use 5-
8840-2596-0.
Do not regrind valve stem ends.
For all valve reworking note that angle of valve head is 44 °and
the valve seat 45 °-see also “Technical Data”.












Valve, Grind In
Grind-In the valve to improve valve seating.
Grind-In by rhythmically lifting valves and turning uniformly.
Use commercially available grinding tool.

Important!
Use only fine-grained pastes for grinding.
Lubricate valve stem before grinding in.

Clean
After grinding, carefully clean valve and valve soat.








Valve Guide, Ream
Measure
Diameter of valve guide-dial gauge and internal measuring
instrument.

Important!
Valve oversizes are available ex-works.
Oversize identification, on the valve guide and on the valve
stem end with the following specified identificaton
flgures/letters-see also “Technical Data”.



Identification Mark
Size Production Customer Service Reamer

Normal none K
0.075 mm 1 K1
0.150mm 2 K2

Ream valve guide from the upper side of the cylinder head to
the next oversize (use 5-8840-2599-0).
After reaming, cross out identification mark and stamp in new
identification mark.


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ISUZU KB P190 2007

ENGINE MECHANICAL (C24SE) 6A-45




Valve Seating, Mill
Place cylinder head on block of wood.
Inlet and exhaust, Guide Drift and Valve Seat Cutter 5-8840-
2593-0.
Valve seat-45 °, side face, upper correction-30 °, side face
(arrows on cutter).
Valve seat width:

Inlet-1.0 to 1.5 mm/0.04 to 0.06 in.
Exhaust-1.7 to 2.2 mm/0.072 to 0.088 in.




Inspection
Valve stem projection-use 5-8840-2596-0.

Important!
If dimension “A” is exceeded, use new valves.
Check valve stem projection again. If dimension “A” is
exceeded, replace cylinder head.








Cylinder Head, Overhaul
Cylinder head disassembled.

Valve, Grind
Important!
Ensure that there are no crater-like burns on the valve cone.

Regrinding possible once or twice.
Grinding of valve stem end is not permitted.

Angle at valve head-44 °




Inspection
Check valve stem projection as shown 5-8840-2596-0.


Valve, Grind in
Lubricate valve stem, use fine-graining grinding paste.

Lift up valve from seat rythmically using valve grinding tool (1)
for distribution of grinding paste.




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ISUZU KB P190 2007