Page 5017 of 6000

6F–6ENGINE EXHAUST
Exhaust Silencer
Exhaust Silencer and Associated Parts
E06RW031
Legend
(1) Exhaust Silencer
(2) Exhaust Silencer(3) Mounting Rubber
(4) Exhaust Silencer Fixing Nuts
(5) Exhaust Silencer Fixing Bolts
Removal
1. Disconnect battery ground cable.
2. Raise the vehicle and support with suitable safety
stands.
3. Remove exhaust silencer fixing nuts (4) then
disconnect rear exhaust pipe from exhaust silencer.
4. Remove exhaust silencer fixing nuts (5) then
disconnect exhaust silencer from three way exhaust
pipe.
5. Remove exhaust silencer mounting nuts from
chassis side then remove exhaust silencer (1)(2).
Installation
1. Install the exhaust silencer (1)(2) chassis side and
tighten nuts to the specified torque.
Nuts: 16 Nꞏm (1.6 Kgꞏm/12 lb ft)
2. Install the exhaust silencer and tighten nuts (5) on
front exhaust pipe to specified torque.
Nuts: 43 Nꞏm (4.4 Kgꞏm/32 lb ft)
3. Install the rear exhaust pipe and tighten fixing nuts on
exhaust silencer to specified torque.
Nuts: 43 Nꞏm (4.4 Kgꞏm/32 lb ft)
Page 5018 of 6000
6F–7 ENGINE EXHAUST
Rear Exhaust pipe
Rear Exhaust pipe and Associated Parts
E06RW033
Legend
(1) Mounting Rubber(2) Rear Exhaust Pipe
(3) Rear Exhaust Pipe Fixing Nuts
Removal
1. Disconnect battery ground cable.
2. Raise the vehicle and support with suitable safety
stands.
3. Remove rear exhaust pipe fixing nuts (3), then
disconnect rear exhaust pipe from exhaust silencer.
4. Remove mounting rubber (1).
5. Remove rear exhaust pipe (2).
Installation
1. Install the mounting rubber (1).
2. Install the exhaust pipe (2) and tighten two nuts (3) on
exhaust silencer to specified torque.
Nuts: 43 Nꞏm (4.4 Kgꞏm/32 lb ft)
Page 5019 of 6000
6F–8ENGINE EXHAUST
Main Data and Specifications
Torque Specifications
Nꞏm (Kgꞏm/lb ft)
E06RW047
Page 5020 of 6000

6G–1 ENGINE LUBRICATION
ENGINE
ENGINE LUBRICATION
CONTENTS
Service Precaution 6G–1. . . . . . . . . . . . . . . . . . . . . .
General Description 6G–2. . . . . . . . . . . . . . . . . . . . .
Oil Pump 6G–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Pump and Associated Parts 6G–3. . . . . . . . . .
Oil Pump and Associated Parts 6G–3. . . . . . . . . .
Inspection and Repair 6G–4. . . . . . . . . . . . . . . . . .
Reassembly 6G–5. . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Pan and Crankcase 6G–7. . . . . . . . . . . . . . . . . .
Removal 6G–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6G–7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Pump 6G–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Removal 6G–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6G–10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Pump Oil Seal 6G–12. . . . . . . . . . . . . . . . . . . . . . .
Removal 6G–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6G–12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Filter 6G–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 6G–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6G–13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specification 6G–14. . . . . . . . . . . . . .
Special Tool 6G–15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING SERVICE
ON OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.
Page 5021 of 6000
6G–2
ENGINE LUBRICATION
General Description
C06RW002
Legend
(1) Oil Strainer
(2) Oil Pump
(3) Relief Valve
(4) Oil Pressure Switch
(5) Oil Filter
(6) Safety Valve
(7) Oil Pressure Unit
(8) Oil Gallery
(9) Crankshaft Bearing(10) Crankshaft
(11) Connecting Rod Bearing
(12) Connecting Rod
(13) Piston
(14) Oil Gallery; Cylinder Head
(15) Camshaft
(16) Camshaft Journal
(17) Front Journal; Camshaft Drive Gear
(18) Rear Journal; Camshaft Drive Gear
(19) Oil Pan
Page 5022 of 6000
6G–3 ENGINE LUBRICATION
Oil Pump
Oil Pump and Associated Parts
051RW005
Legend
(1) Crankshaft Timing Pulley
(2) Crankcase with Oil Pan
(3) Oil Pipe
(4) Oil Strainer
(5) Oil Pump Assembly
(6) Plug
(7) Spring(8) Relief Valve
(9) Oil Pump Cover
(10) Driven Gear
(11) Drive Gear
(12) Oil Seal
(13) O-ring
(14) Oil Pump Body
Oil Pump and Associated Parts
1. Remove crankshaft timing pulley.
2. Remove crankcase with oil pan.
3. Remove oil pipe.
4. Remove oil strainer.5. Remove oil pump assembly.
6. Remove plug.
7. Remove spring.
8. Remove relief valve.
9. Remove oil pump cover.
10. Remove driven gear.
Page 5023 of 6000

6G–4
ENGINE LUBRICATION
11. Remove drive gear.
12. Remove oil seal.
13. Remove O-ring.
Inspection and Repair
CAUTION: Make necessary correction or parts
replacement if wear, damage or any other abnormal
conditions are found during inspection.
Relief Valve (8)
Check to see that the relief valve slides freely.
The oil pump must be replaced if the relief valve does
not slide freely.
Replace the spring and/or the oil pump assembly (5) if
the spring is damaged or badly worn.
051RS002
Body (14) and Gears (10, 11)
The pump assembly must be replaced if one or more of
the conditions below is discovered during inspection.
Badly worn or damaged driven gear (10).
Badly worn drive gear (11) driving face.
Badly scratched or scored body sliding face (14) or
driven gear (10).
Badly worn or damaged gear teeth.
Measure the clearance between the body and the driven
gear with a feeler gauge.
Standard : 0.10 mm–0.18 mm
(0.0039 in.–0.0070 in)
Limit : 0.20mm (0.0079 in)
051RS004
Measure the clearance between the drive gear and
driven gear with a feeler gauge.
Standard : 0.11 mm–0.24 mm
(0.0043 in–0.0094 in)
Limit : 0.35mm (0.0138 in)
051RS003
Measure the side clearance with a precision straight
edge and a feeler gauge.
Clearance
Standard : 0.03 mm–0.09 mm
(0.0011 in–0.0035 in)
Limit : 0.15mm (0.0059 in)
Page 5024 of 6000

6G–5 ENGINE LUBRICATION
051RS005
Oil Strainer
Check the oil strainer for cracking and scoring. If cracking
and scoring are found, the oil strainer must be replaced.
051RS006
Reassembly
1. Install drive gear (11).
2. Install driven gear (10).
3. Install oil pump cover (9) and first, loosely tighten all of
the attaching screws. Next, tighten the attaching
screws to the specified torque.
Torque : 10 Nꞏm (1.0 Kgꞏm/89 lb in)
After installation, check that the gear rotates
smoothly.
4. Install relief valve (8) and apply engine oil to the relief
valve and spring (7).
5. Install spring (7).6. Install the plug (6).
Torque : 8 Nꞏm (0.8 Kgꞏm/69 lb in)
051RS007
7. Install oil pump assembly (5).
Carefully remove any oil from the cylinder body and
the pump. Apply sealant (TB–1207B or equivalent)
to the pump fitting face as shown in illustration. Take
care that sealant is not applied to oil port surfaces.
The oil pump assembly must be installed within 5
minutes after sealant application before the sealant
hardens.
CAUTION: Do not apply an excessive amount of
sealant to the contact surface. Applying too much
sealant will overflow the contact surfaces. This
could cause serious damage to the engine.
Attach oil pump assembly to cylinder body.
Tighten the oil pump fixing bolts.
Torque : 25 Nꞏm (2.5 Kgꞏm/18 lbꞏft)
051RW002