timing belt ISUZU TF SERIES 2004 User Guide

6A-38 ENGINE MECHANICAL (6VE1 3.5L)
NOTE: Do not reuse cylinder head bolts.
Do not apply any lubricant to the cylinder head bolts.
Torque:
Temporary: 29 N




m (3.0 kg




m/21 lb ft)
Final: 64 N




m (6.5 kg




m/47 lb ft)



014RW029
2. Install common chamber.

Refer to installation procedure for Common
Chamber in this manual.
3. Install cylinder head cover RH.

Refer to installation procedure for Cylinde
r
Head Cover RH in this manual.
4. Install cylinder head cover LH.

Refer to installation procedure for Cylinde
r
Head Cover LH in this manual.
5. Install timing belt.

Refer to installation procedure for Timing Belt in
this manual. 6. Install crankshaft pulley.

Refer to installation procedure for Crankshaf
t
Pulley in this manual.

ENGINE MECHANICAL (6VE1 3.5L) 6A-43
Crankshaft and Main Bearings
Removal




F06RW010

Legend
(1) Engine Assembly
(2) Crankshaft Pulley
(3) Timing Belt Cover
(4) Timing Belt
(5) Crankcase with Oil Pan
(6) Oil Pipe
(7) Oil Strainer
(8) Oil Pump Assembly
(9) Cylinder Body Side Bolt
(10) Oil Gallery
(11) Flywheel
(12) Rear Oil Seal Retainer
(13) Connecting Rod Cap
(14) Crankshaft Main Bearing Cap
(15) Crankshaft and Main Bearing

6A-44 ENGINE MECHANICAL (6VE1 3.5L)
1. Remove engine assembly.

Refer to removal procedure for Engine
Assembly in this manual.
2. Remove timing belt.

Refer to removal procedure for Timing Belt in
this manual.
3. Remove oil pan and crankcase.

Refer to removal procedure for Oil Pan and
Crankcase in this manual.
4. Remove oil pipe with O-ring.
5. Remove oil strainer assembly with O-ring.
6. Remove oil pump assembly.

Refer to removal procedure for Oil Pump in this
manual.
7. Remove cylinder body side bolts.
8. Remove oil gallery.
9. Remove flywheel.
10. Remove rear oil seal retainer.

Refer to removal procedure for Rear Oil Seal in
this manual.
11. Remove connecting rod caps.
12. Remove crankshaft main bearing caps.
13. Remove crankshaft and main bearings.
Installation
1. Install crankshaft and main bearings.

Install main bearing in the cylinder block and
main bearing cap respectively.

Apply new engine oil to upper and lower main
bearings.
NOTE:

Do not apply engine oil to the bearing back faces.

Make sure that main bearings are in correc
t
position.

Install crankshaft with care.

Apply engine oil to the thrust washer.

Install thrust washer on No.3 journal.

Oil grooves in thrust washer must face the
crankshaft.





015RS012



015RS013
2. Install crankshaft main bearing caps.


Apply engine oil to the thread and seating
surface of each bearing cap fixing bolt.
NOTE:

Do not apply engine oil to the bearing back faces.

Install bearing caps in the order of numbers,
starting with cylinder block front side.

Tighten main bearing fixing bolts to the specified
torque.
Torque: 39 N




m (4.0 kg




m/29 lb ft)


After tightening the bolts, make sure that the
crankshaft rotates smoothly.
3. Install connecting rod caps.

The cap number must be same as connecting
rod number.


Apply engine oil to the thread and seating
surface of each nut.

ENGINE MECHANICAL (6VE1 3.5L) 6A-47
11. Install crankcase.

Remove oil on crankcase mounting surface
and dry the surface.

Properly apply a 4.5 mm (0.7 in) wide bead o
f
sealant (TB1207C or equivalent) to the
crankcase mounting surface. The bead mus
t
be continuous.

The crankcase must be installed within 5
minutes after sealant application to preven
t
premature hardening of sealant.

Tighten fixing bolts to the specified torque.
Torque: 10 N




m (1.0 kg




m/1 lb ft)



013RW010




013RW004
12. Install oil pan

Remove oil on oil pan mounting surface and
dry the surface.


Properly apply a 4.5 mm (0.7 in) wide bead o
f
sealant (TB1207C or equivalent) to the oil pan
mounting surface. The bead must be
continuous.

The oil pan must be installed within 5 minutes
after sealant application to prevent premature
hardening of sealant.

Tighten fixing bolts to the specified torque.
Torque: 25 N




m (2.5 kg




m/18 lb ft)





013RW003




013RW002
13. Install timing belt.

Refer to installation procedure for Timing Belt in
this manual.
14. Install engine assembly.

Refer to installation procedure for Engine
Assembly in this manual.

ENGINE MECHANICAL (6VE1 3.5L) 6A-93
Main Data and Specification

General Specification
Item Specifications
Engine type, number of cylinders and arrangement Water cooled, four cycle V6
Form of combustion chamber Pent-roof type
Valve mechanism 4-Cams, 4-Valves, DOHC Gear & Belt Drive
Cylinder liner type Casted in cylinder block
Total piston displacement 3494 cc
Cylinder bore x stroke 93.4mm x 85.0mm

(3.6772 in  3.3465 in)
Compression ratio 8.6
Compression pressure at 300rpm 1.37 MPa (14.0 Kg/cm2)
Engine idling speed rpm Non adjustable (750)
Valve clearance Intake: 0.28 mm (0.11 in)

Exhaust: 0.30mm (0.12 in)
Oil capacity 5.3 liters
Ignition timing
Non adjustable (12 BTDC at idle rpm)
Spark plug PK16PR11, RC10PYP4, K16PR-P11
Plug gap 1.0 mm – 1.1 mm (0.0394 in – 0.0433 in)

6A-96 ENGINE MECHANICAL (6VE1 3.5L)
Crankshaft main bearing, Flywheel, Crankcase, Oil pan, Timing belt tensioner, Timing pulley, timing belt
cover, Oil pump, Oil gallery, Oil strainer and water pump
N
 m (kg
 m/ lb ft)




RTW46ALF000701

ENGINE COOLING (6VE1 3.5L) 6B-3
Water Pump
The EC pump is a centrifugal impeller type and is driven
by a timing belt.


030RS001
Thermostat
The thermostat is a wax pellet type with a air hole(1)
and is installed in the thermostat housing.


031RW002
Radiator
The radiator is a tube type with corrugated fins. In order
to raise the boiling point of the coolant, the radiator is
fitted with a cap in which the valve is operated at 93.3


122.7 kPa (13.5
17.8 psi) pressure. (No oil cooler
provided for M/T)


110RS001
Antifreeze Solution
 Calculating mixing ratio






F06RW005

ENGINE COOLING (6VE1 3.5L) 6B-7
Water Pump
Water Pump and Associated Parts



030RS002
Legend
(1) Timing Belt (3) Water Pump Assembly
(2) Idle Pulley (4) Gasket


Removal
1. Disconnect battery ground cable.
2. Drain coolant.
3. Radiator hose (on inlet pipe side).
4. Remove timing belt. Refer to “Timing Belt" in this
manual.
5. Remove Idle pulley.
6. Remove water pump assembly.
7. Remove gasket.
Inspection
Make necessary repair and parts replacement if
extreme wear or damage is found during inspection.
Should any of the following problems occur, the entire
water pump assembly must be replaced:
 Crack in the water pump body
 EC leakage from the seal unit
 Play or abnormal noise in the bearing
 Cracks or corrosion in the impeller.

Installation
1. Install gasket, clean the mating surface of gasket
before installation.
2. Install water pump assembly and tighten bolts to the
specified torque.
Torque: 25 N




m (2.5 kg




m/18 lb ft)
 Tightening order
The tightening order are in the illustrate.

6B-8 ENGINE COOLING (6VE1 3.5L)
NOTE: To prevent the oil leakage, apply the LOCTITE
262 or an equivalent, to the arrow marked fixing bol
t
thread.


030RW008
3. Idle pulley
 Install idle pulley and tighten bolt to the specified
torque.
Torque: 52 N




m (5.3 kg




m/38 lb ft)
4. Timing belt
 Install timing belt. Refer to timing belt installation
step in “Timing Belt" in this manual.
5. Connect radiator inlet hose and replenish EC.
6. Connect battery ground cable.

6E-340 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Step Action Value (s) Yes No
22
Check the ECM grounds to verify that they are clean
and tight. Refer to the ECM wiring diagrams.
Was a problem found?
- Verify repair Go to Step 23
23
1. Check for faulty engine mounts.
2. If a problem is found, repair as necessary.
Was a problem found?
- Verify repair Go to Step 24
24
Check for the following engine mechanical problems
(refer to Engine Mechanical section):

Low compression.

Leaking cylinder head gaskets.

Worn camshaft.

Sticking or leaking valves. -Valve timing.

Broken valve springs.

Camshaft drive belt slipped or stripped.
Was a problem found?
- Verify repair Go to Step 25
25
1. Review all diagnostic procedures within this table.
2. If all procedures have been completed and no
malfunctions have been found, review/inspect the
following:

Visual/physical inspection.

Tech 2 data.

All electrical connections within a suspected circuit
and/or system.
Was a problem found?
- Verify repair Go to Step 26
26
Is the ECM programmed with the latest software
release?
If not, download the latest software to the ECM using
the "SPS (Service Programming System)".
Was the problem solved?
- Verify repair Go to Step 27
27
Replace the ECM.
Is the action complete?
IMPORTANT: The replacement ECM must be
programmed. Refer to section of the Service
Programming System (SPS) in this manual. Following
ECM programming, the immobilizer system (if
equipped) must be linked to the ECM. Refer to section
11 “Immobilizer System-ECM replacement” for the
ECM/Immobilizer linking procedure.
- Verify repair -