OPEL FRONTERA 1998 Workshop Manual

6F – 2 ENGINE EXHAUST
GENERAL DESCRIPTION
150RW070
When inspecting or replacing exhaust system
components, make sure there is adequate clearance
from all points on the underbody to prevent overheating
of the floor pan and possible damage to the passenger
compartment insulation and trim materials.
Check complete exhaust system and nearby body
areas and rear compartment lid for broken, damaged,
missing or mispositioned parts, open seams, holes
loose connections or other deterioration which could
permit exhaust fumes to seep into the rear
compartment or passenger compartment. Dust or water
in the rear compartment may be an indication of a
problem in one of these areas. Any faulty areas should
be corrected immediately.HANGERS
Various types of hangers are used to support exhaust
system(s). These include conventional rubber straps,
rubber rings, and rubber blocks.
The installation of exhaust system supports is very
important, as improperly installed supports can cause
annoying vibrations which can be difficult to diagnose.
GASKET
The gasket must be replaced whenever a new exhaust
pipe, muffler or exhaust throttle is installed.

ENGINE EXHAUST 6F – 3
ON-VEHICLE SERVICE
FRONT EXHAUST PIPE
Rattles and noise vibrations in the exhaust system are
usually caused by misalignment of parts. When aligning
the system, leave all bolts or nuts loose until all parts
are properly aligned; then tighten, working from front to
rear.
1. Check connections for looseness or damage,
especially for exhaust gas leakage.
2. Check clamps and rubbers for weakness, cracks or
damage.3. If any part of the converter heat shield is damaged
or dented to the extent that it contacts the catalyst,
repair or replace.
4. Check for dents or damage and for any holes or
cracks caused by corrosion.
3
2 1
Legend
(1) Front exhaust pipe
(2) Center exhaust pipe
(3) Mounting rubber
150RW071

6F – 4 ENGINE EXHAUST
REMOVAL
1. Battery negative cable.
2. Raise the vehicle and support with suitable safety
stands.
3. Remove front exhaust pipe fixing nuts from engine
side.
4. Remove fixing nuts between front exhaust pipe and
center exhaust pipe, remove front exhaust pipe.
5. Disconnect center exhaust pipe and silencer,
remove center exhaust pipe.
6. Remove fixing nuts from connection part of tail pipe,
remove mounting rubber and remove silencer
bracket, silencer.
7. Remove mounting rubber for tail pipe, remove tail
pipe.
INSTALLATION
1. Install front exhaust pipe and tighten it temporarily.
2. Tighten fixing nuts of front exhaust pipe to the
specified torque. (for engine side)
Torque: 67 Nꞏm (6.8 kgꞏm/50 lb ft)
3. Tighten fixing nuts of front exhaust pipe to the
specified torque. (for center pipe side)
Torque: 43 Nꞏm (4.4 kgꞏm/32 lb ft)
4. Install silencer and tighten silencer bracket nuts to
the specified torque.
Torque: 16 Nꞏm (1.6 kgꞏm/12 lb ft)
5. Install tail pipe and tighten it.
Torque: 43 Nꞏm (4.4 kgꞏm/32 lb ft)
6. Install mounting rubbers.

ENGINE EXHAUST 6F – 5
CENTER EXHAUST PIPE
REMOVAL
1. Battery negative cable.
2. Raise the vehicle and support with suitable safety
stands.
3. Remove mounting rubber.
4. Remove fixing nuts from silencer side.
5. Remove fixing nuts from front exhaust pipe.
6. Remove center exhaust pipe assembly.
INSTALLATION
1. Place center exhaust pipe in the original position
then tighten fixing nuts temporarily.
2. Install mounting rubber.
3. Tighten front exhaust pipe side nuts to the specified
torque.
Torque : 43 Nꞏm (4.4 kgꞏm/32 lb ft)
4. Tighten silencer side nuts to the specified torque.
Torque : 43 Nꞏm (4.4 kgꞏm/32 lb ft)
3
2 1
Legend
(1) Front Exhaust Pipe
(2) Center Exhaust Pipe
(3) Mounting Rubber
150RW071

6F – 6 ENGINE EXHAUST
EXHAUST SILENCER
REMOVAL
1. Battery negative cable.
2. Raise the vehicle and support with suitable safety
stands.
3. Remove mounting rubber from silencer.
4. Remove silencer mounting bracket.
5. Remove fixing nuts between center exhaust pipe
and silencer.
6. Remove fixing nuts from tail pipe flange.
7. Remove silencer assembly.
INSTALLATION
1. Place silencer assembly in the original installation
position, tighten both side (front and rear) nuts
temporarily.
2. Tighten silencer mounting bracket to the specified
torque.
Torque : 16 Nꞏm (1.6 kgꞏm/12 lb ft)
3. Tighten center exhaust pipe side nuts to the
specified torque.
Torque : 43 Nꞏm (4.4 kgꞏm/32 lb ft)
4. Tighten tail pipe side nuts to the specified torque.
Torque : 43 Nꞏm (4.4 kgꞏm/32 lb ft)
5. Install silencer mounting rubber.
6
3
4
2
1
5
Legend
(1) Mounting Rubber
(2) Post Silencer
(3) Silencer(4) Mounting Bracket
(5) Mounting Rubber
(6) Tail Pipe
150RW072

ENGINE EXHAUST 6F – 7
REAR EXHAUST PIPE
REMOVAL
1. Battery negative cable.
2. Raise the vehicle and support with suitable safety
stands.
3. Remove mounting rubber from post silencer.
4. Remove fixing nuts at silencer side.
5. Remove tail pipe together with post silencer.
6. Remove fixing nuts between tail pipe and post
silencer which separates them.
INSTALLATION
1. Install tail pipe and post silencer and tighten them to
the specified torque.
Torque : 43 Nꞏm (4.4 kgꞏm/32 lb ft)
2. Place tail pipe together with post silencer to original
position and tighten fixing nuts at silencer side.
Torque : 43 Nꞏm (4.4 kgꞏm/32 lb ft)
3. Install mounting rubber for post silencer.
4. Lower the vehicle.
5. Reconnect battery negative cable.
6
3
4
2
1
5
Legend
(1) Mounting Rubber
(2) Post Silencer
(3) Silencer(4) Mounting Bracket
(5) Mounting Rubber
(6) Tail Pipe
150RW072

ENGINE LUBRICATION 6G – 1
ENGINE LUBRICATION
CONTENTS
General Description . . . . . . . . . . . . . . . . . . 6G–2
Lubrication Chart . . . . . . . . . . . . . . . . . . 6G–2
Oil Flow . . . . . . . . . . . . . . . . . . . . . . . . . 6G–3
Oil Pump Specification . . . . . . . . . . . . . . 6G–3
Oil Filter Specification . . . . . . . . . . . . . . . 6G–3
Sub Oil Filter Specification . . . . . . . . . . . 6G–4Oil Pump . . . . . . . . . . . . . . . . . . . . . . . . . . 6G–5
Oil Cooler Assembly . . . . . . . . . . . . . . . . . . 6G–6
Oil Cooler Specification . . . . . . . . . . . . . . 6G–6
Oil Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . 6G–6
Sub Oil Filter . . . . . . . . . . . . . . . . . . . . . 6G–6

6G – 2 ENGINE LUBRICATION
GENERAL DESCRIPTION
LUBRICATION CHART
P
33
32
31
30
1
2
3
4
56
8
97
10
11
12
13
14 23 29
25
28
27262415
16
17 18
19 20 21 22
Legend
(1) Camshaft
(2) Balance Shaft
(3) Crankshaft
(4) Oil Cooler and Oil Filter Assembly
(5) Oil Filter Relief Valve 98 Kpa (1 kg/cm
2/14.2 Psi)
(6) Oil Cooler Relief Valve 245 Kpa (2.5 kg/cm2/
36 Psi)
(7) First Oil Pump
(8) Main Oil Relief Valve 588 Kpa (6 kg/cm
2/ 85 Psi)
(9) To Oil Pan
(10) To Oil Pan
(11) Injector
(12) Oil Rail(13) Sub Oil Filter Relief Valve 98 Kpa (1 kg/cm
2/
14.2 Psi)
(14) Sub Oil Filter
(15) Relief Valve 588 Kpa (6 kg/cm
2/ 85 Psi)
(16) Second Oil Pump
(17) Oil Pan
(18) To Oil Pan
(19) Balance Shaft
(20) Cooling Jet Relief Valve 245 Kpa (2.5 kg/cm
2/
36 Psi)
(21) Cooling Jet
(22) To Oil Pan
(23) Two Way Check Valve
(24) Nipple Filter
040RW018

ENGINE LUBRICATION 6G – 3
To meet a newly adopted electronically controlled fuel
injection system using engine oil two oil pumps have
been provided to increase circulating oil capacity.
The first oil pump serves mainly to lubricate the engine
parts, while the second mainly serves the fuel injectors
and partially cools the pistons.
The oil cooler is provided on the first oil pump side and
uses engine coolant.
OIL FLOW
Legend
(1) Oil Pump
(2) Regulator Valve
(3) Oil Cooler
(4) Oil Filter Relief Valve
(5) Full Flow Filter
(6) Oil Cooler Relief Valve
(7) Gallery
OIL PUMP SPECIFICATIONS
OIL FILTER SPECIFICATIONS
Legend
(1) Oil cooler assembly
(2) Oil filter assembly (25) Edge Filter
(26) Edge Filter
(27) High Pressure Oil Pump Assembly
(28) To Oil Pan
(29) Pressure Control Valve(30) To Oil Pan
(31) Turbocharger
(32) Oil Gallery
(33) Timing Gear Train
17 65 4
3
2
050RW010
1
2
050RW009