2004 ISUZU TF SERIES oil

6A-14 ENGINE MECHANICAL (C24SE)
Crankshaft C24SE
Material Nodular Cast Iron
Bearing subjected to End Thrust Guide Bearing NO.3
Main Bearing-Material &Type Steel Backed Tri-metal Babbitt
Front Seal-Diameter &Type 35.0mm Lip Seal
Rear seal-Diameter &Type 90.0mm Micro-lip Seal
Crankshaft Balancing Individually Balanced
No. of Counterweights 8

Camshaft C24SE
Location Overhead (Cylinder Head)
Material Grey Cast Iron
Bearing Material Aluminum
No. of Bearings Camshaft Drive-Material
&Type 200-250 HB5/750
(Camshaft drive type: toothed belt
Camshaft drive material: rubber composite GD380)


Pistons C24SE
Material Aluminum Alloy
Finish & Type Tin-coated Strutless
Piston Rings
Function (top to bottom)
-Ring 1Compression Ring
-Ring 2 Compression Ring
-Ring 3 Oil Ring
Description -Ring 1 Rectangular
-Ring 2 Taper Face
-Ring 3 3-piece (2 Scrapers&1 Expander)
Material -Ring 1 Molybdenum Inlay Nodular Cast Iron
-Ring 2 Cast Iron (individually cast)
-Ring 3 Steel
Material Case Hardened Steel
Retention Locked in Rod
Bearing Machined in Piston Pin Boss

Connecting Rod C24SE
Material Nodular Cast Iron
Bearing-Material &Type Steel Backed Tri-metal Babbitt

Inlet Manifold C24SE
Material Aluminum Alloy

Exhaust Manifold C24SE
Description Dual Take-down
Material High Si-Mo Nodular Iron

6A-16 ENGINE MECHANICAL (C24SE)
CRANKCASE VENTILATION SYSTEM

The Engine Ventilation System passes crankcase vapours, via the Engine Vent Pipe, to the Cam Support Cover,
where separation of oil and exhaust gases occur. The oil drains into the Cylinder Head, via the Camshaft Support.
The gases pass through the Primary and Secondary Vent Hoses to the intake system, and are consumed during
the combustion process.

6A-20 ENGINE MECHANICAL (C24SE)





6. Install power steering pump and V-belt.

Adjust
Adjust power steering pump V-belt tension according to the
corresponding operation.


Installation
7. Install radiator according to the corresponding operation.
8. Install air inlet hose.
9. Install all electrical cable connections, hoses and lines to
engine.
10. Install accelerator cable from inlet pipe.
11. Install bonnet.


Inspection
1. Check engine oil level.
2. Fill up cooling system and bleed according to the
corresponding operation.

ENGINE MECHANICAL (C24SE) 6A-21

Toothed Belt and Timing Check

Removal
1. Remove the belts on the bracket for alternator.
2. Remove the fan.
3. Remove the V-belt for power steering.
4. Remove the V-belt for A/C.
5. Remove the fan belt.
6. Remove the fan shroud.

7. Remove the crankshaft pulley while counterholding on
the fastening bolt of toothed belt drive gear.
8. Remove the toothed belt from cover.

Inspection
1. Turn the crankshaft in the engine rotational direction
mark(2) so that the notch (1) on the camshaft gear aligns
with the mark on toothed belt rear cover.
2. Check the timing belt for worn, cracks or oil adhesion.

3. Check that the cast on the water pump aligns with the
counterpart on cylinder block (arrowed).
4. The tension of a toothed belt is correctly adjusted when
the pointer and the center of the notch are aligned(I).
The tension of a run-in toothed belt (regardless of
mileage covered) is correctly adjusted when the pointer
is positioned approx. 4mm (0.16 in.) to the left of the
center of the notch(II).
Check the condition of the run-in toothed belt for
suitability for reuse. Only toothed belts of the toothed
belt tension rollers must be replaced and the source of oil
contamination must be eliminated.

6A-30 ENGINE MECHANICAL (C24SE)

Toothed Belt Rear Cover
(Engine with toothed belt tension
roller)

Removal
1. Mark operating direction of toothed belt.
2. Remove toothed belt according to the operation "Toothed
Belt".
3. Remove toothed belt tension roller according to the
operation "Toothed Belt Tension Roller ".



4. Remove fastening bolt while counterholding with 5-8840-
2598-0 (Holding wrench).


5. Remove toothed belt drive gear while counterholding with
5-8840-2598-0 (Holding wrench).
6. Remove camshaft housing cover.
7. Remove camshaft pulley while counterholding at hex
head of camshaft.


8. Remove toothed belt rear cover (arrows) from oil pump
and camshaft housing.

ENGINE MECHANICAL (C24SE) 6A-31







Installation
1. Install toothed belt rear cover.
2. Install camshaft pulley while counterholding at camshaft
hex head.
3. Install camshaft housing cover.

Tighten (Torque)
Toothed belt rear cover to oil pump and camshaft housing - 6
N

m/4 lbf ft.
Camshaft housing cover to housing - 6 N

m (0.6 kgf

m).
Camshaft pulley to camshaft - 45 N

m (4.6 kgf

m).



4. Install toothed belt drive gear to crankshaft - 130 N

m
(13.3 kgf

m).
5. Install toothed belt according to the operation "Toothed
Belt".



Toothed Belt Tension Roller
Removal
1. Mark operating direction of toothed belt.
2. Remove toothed belt according to the operation "Toothed
Belt”.
3. Remove toothed belt tension roller (1) from oil pump.










Installation
1. Install toothed belt tension roller and make sure that the
locking lever (1) engages in the guide lugs (arrowed) on
the oil pump housing.
2. Install toothed belt according to the operation "Toothed
Belt" with paying attention to the operating direction of
toothed belt.

Tighten (Torque)
Toothed belt tension roller to oil pump - 25 N
m (2.5 kgf
m)

ENGINE MECHANICAL (C24SE) 6A-33
HYDRAULIC VALVE LIFTER

1. Hydraulic Valve Lifter
1. Oil reservoir
2. Piston with ball head (moving)
3. Pressure cylinder (fixed)
4. Check ball
5. Pressure chamber
6. Oil feed

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.