alternator belt ISUZU TF SERIES 2004 Workshop Manual

ENGINE MECHANICAL (C24SE) 6A-3
PAGE
ENGINE EXTERNAL PARTS ............................................................................................ 6A-65
Radiator ....................................................................................................................... 6A-65
Thermostat................................................................................................................... 6A-66
Water Pump ................................................................................................................. 6A-66
Coating sealing surfaces with Silicone Grease ....................................................... 6A-67
Alternator ..................................................................................................................... 6A-67
Starter .......................................................................................................................... 6A-67
V-belt Tension of Alternator ....................................................................................... 6A-68
FUEL INJECTION SYSTEM.............................................................................................. 6A-69
Map Sensor.................................................................................................................. 6A-69
Pressure Regulator ..................................................................................................... 6A-69
ECM (Engine Control Module).................................................................................... 6A-69
ECT ............................................................................................................................... 6A-70
Idle Air Control(IAC) Valve.......................................................................................... 6A-70
Ignition Coil ................................................................................................................. 6A-70
Crank Position Sensor................................................................................................ 6A-71
FUEL INJECTOR .............................................................................................................. 6A-72
Knock Sensor .............................................................................................................. 6A-72
Oxygen Sensor ............................................................................................................ 6A-73
Throttle Valve Position Sensor .................................................................................. 6A-73
Acclelerator Pedal and Cable..................................................................................... 6A-73
Air Cleaner Filter ......................................................................................................... 6A-74
Spark Plug Thread ...................................................................................................... 6A-75
TECHNICAL DATA ........................................................................................................... 6A-76
Recommended Troque Values................................................................................... 6A-87
SPECIAL SERVICE TOOL................................................................................................ 6A-88

ENGINE MECHANICAL (C24SE) 6A-17
ENGINE ASSEMBLY & LOOSE PARTS


Loose Parts
1 Alternator
2 P/S Pivot Spacer
3 P/S Adjusting Screw
4 P/S Adjusting Plate
5 P/S Adjusting Nut
6 Alternator & Fan Drive Belt
7 A/C Compressor Drive Belt
8 P/S Pump Drive Belt
9 Tensioner Bolt
10 Tensioner Pulley
11 Pulley Dust Shield Cover
12 Pulley Spacer
13 A/C Compressor Bracket
14 Pulley Bolt
15 Fan Pulley
16 Cooling Fan
Engine Assembly
20 C24SE

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-22 ENGINE MECHANICAL (C24SE)


Installation
1. Install the toothed belt to the cover.
2. Install the crankshaft pulley while counterholding on the
fastening bolt of toothed belt drive gear.
3. Install the fan shroud.


Tighten(Torque)
Crankshaft pulley bolts - 20 N

m (2.1 kgf

m)


4. Install the fan belt
5. Install the V-belt for A/C.
6. Install the V-belt for power steering.
7. Install the fan.
8. Install the belts on the bracket for alternator.

6A-24 ENGINE MECHANICAL (C24SE)
Toothed Belt, Replace
(Engine with toothed belt tension
roller)

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.


Adjust
Turn the crankshaft in the engine rotational direction to
mark(2).
Align markings on toothed belt and on toothed belt rear cover.
Simultaneously, notch (1) on camshaft gear must align with the
mark on toothed belt rear cover.
Turn the crankshaft slowly and smoothly.

ENGINE MECHANICAL (C24SE) 6A-25








Adjust
Loosen the fastening bolt of the toothed belt tension roller and
turn the adjustment eccentric in the direction of arrow
(clockwise) until pointer (1) comes to the left stop.
Remove the toothed belt.

Installation
1. Install a new toothed belt while keeping tension side taut.

Adjust
Toothed belt tension - see operation " Toothed Belt Tension".


2. Install the toothed belt to the cover.
3. Install the crankshaft pulley while counterholding on the
fastening bolt of toothed belt drive gear.
4. Install the fan shroud.
5. Install the fan belt.
6. Install the V-belt for A/C.
7. Install the V-belt for power steering.
8. Install the fan.
9. Install the belts to the bracket for alternator.

6A-26 ENGINE MECHANICAL (C24SE)
OPERATIONS ON INSTALLED ENGINE
SEALING OPERATIONS

Gasket, Exhaust Manifold, Cylinder Head
Removal
1. Remove front exhaust pipe from exhaust manifold.
2. Remove exhaust manifold heat shield.
3. Remove exhaust manifold retaining nut.
4. Remove exhaust manifold from cylinder head.




Clean
Sealing surfaces.

Tighten (Torque)
Exhaust manifold to cylinder head - 22 N

m (2.2 kgf

m)
Front exhaust pipe to exhaust manifold - 25 N

m (2.6 kgf

m)


Gasket, Intake Manifold, Cylinder Head
Removal
1. Remove air intake hose.
2. Remove drive belt for alternator.
3. Remove bolt clamping bracket for alternator from intake
manifold.
4. Remove intake manifold from cylinder head.








Clean
Sealing surfaces

Tighten (Torque)
Intake manifold to cylinder head - 22 N

m (2.2 kgf

m)
Clamping bracket for alternator to intake manifold - 25 N

m (2.5
kgf

m)

Installation
1. Install V-belt according to the corresponding operation.
2. Install air intake hose.

ENGINE MECHANICAL (C24SE) 6A-35
Camshaft Housing, Removal and
Installation

Cylinder Head
Important!
Remove cylinder head only from cold engine (room
temperature).



Removal
1. Remove ground cable from battery.
2. Open radiator drain tap and collect coolant.
3. Remove air intake hose.
4. Remove all cable connections, hoses and lines to the
cylinder head.
5. Remove accelerator cable on the throttle valve.
6. Remove V-belt for alternator.



7. Remove front toothed belt cover according to the
corresponding operation.
8. Bring piston of 1st cylinder to TDC and mark the position.
9. Remove camshaft housing cover.
10. Remove camshaft timing gear after releasing tension on
toothed belt.


11. Remove upper bolts of rear toothed belt cover.
12. Remove exhaust pipe from exhaust manifold.
13. Remove cylinder head after loosening bolts from outside
inwards (at first quarter turn then half turn) in a spiral
pattern.
14. Remove camshaft housing from cylinder head.
15. Remove rocker arm, pressure parts and hydraulic valve
lifter adjuster.

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".

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.