low oil pressure SSANGYONG MUSSO 1998 Workshop Repair Manual

GENERAL INFORMATION 0B-9
Chassis and Body
Months
MAINTENANCE
ITEMMAINTENANCE INTERVALKilometers or time in months, whichever comes first
120 105 90 75 60 45 30 15 1
96 84 72 60 48 36 24 12
- x1,000 km
Exhaust pipes & mountings
Brake/Clutch fluid(3)(4)
Parking brake/Brake pads F & R (5)
Brake line & connections (including booster)
Manual transmission oil (3)
Clutch & brake pedal free play
Front & Rear Differential Fluid (3)I
R
I
I
I
I
I-
-
-
I
I
-
II
I
I
I
I
I
II
R
I
I
I
I
II
I
I
I
R
I
RI
I
I
I
I
I
II
R
I
I
R
I
RI
I
I
I
I
I
II
R
I
I
I
I
I
Automatic transmission fluid (MB W4A040) (6)
Automatic transmission fluid (BTRA M74)
Chassis & underbody bolts & nuts tight/secure
Tire condition & inflation pressure
Wheel alignment (7)
Steering wheel & linkage
Power steering fluid & lines* (3)
Drive shaft boots
Seat belts, buckles & anchors
Lubricate locks, hinges & bonnet latchI
I
I
I
II
I
I
I
I
I
I
I
I
II
I
I
I
I
I
I
I
I
IR
I
I
I
I
I
I
I
II
I
I
I
I
I
I
I
II
I
I
I
I
I
I
I
I
IR
R
I
I
I
I
I
I
I
II
I
I
I
I
I
I
I
I
Transfer case fluidRIII
Inspect & ADJUST when abnormal condition is noted
I
I
I
I
I
I
I
I
I
Chart Symbols :
I - Inspect these items and their related parts. If necessary, correct, clean, replenish, adjust or replace.
R - Replace or change.
(3) Refer to “Recommended fluids and lubricants”.
(4) Change the brake / clutch fluid every 15,000 km if the vehicle is mainly driven under severe conditions:
- Driving in hilly or mountainous terrain, or
- Towing a trailer frequently
(5) More frequent maintenance is required if under severe condition : short distance driving, extensive idling, frequent low -
speed operation in stop-and-go traffic or driving in dusty condition.
(6) Change automatic transaxle fluid and filter every 75,000 km if the vehicle is mainly driven under severe conditions.
- In heavy city traffic where the outside temperature regularly reaches 32°C (90°F) or higher, or
- In hilly or mountainous terrain, or
- When doing frequent trailer towing, or
- Uses such as found in taxi, police or delivery service.
(7) If necessary, rotate and balance wheels.

0B-12 GENERAL INFORMATION
OWNER INSPECTIONS
AND SERVICES
WHILE OPERATING THE VEHICLE
Horn Operation
Blow the horn occasionally to make sure it works. Check
all the button locations.
Brake System Operation
Be alert for abnormal sounds, increased brake pedal
travel or repeated puling to one side when braking. Also,
if the brake warning light goes on, or flashes, something
may be wrong with part of the brake system.
Exhaust System Operation
Be alert to any changes in the sound of the system or
the smell of the fumes. These are signs that the system
may be leaking or overheating. Have the system
inspected and repaired immediately.
Tires, Wheels and Alignment Operation
Be alert to any vibration of the steering wheel or the
seats at normal highway speeds. This may mean a wheel
needs to be balanced. Also, a pull right or left on a
straight, level road may show the need for a tire pressure
adjustment or a wheel alignment.
Steering System Operation
Be alert to changes in the steering action. An inspection
is needed when the steering wheel is hard to turn or
has too much free play, or is unusual sounds are noticed
when turning or parking.
Headlight Aim
Take note of the light pattern occasionally. Adjust the
headlights if the beams seem improperly aimed.
AT EACH FUEL FILL
A fluid loss in any (except windshield washer) system
may indicate a problem. Have the system inspected and
repaired immediately.
Engine Oil Level
Check the oil level and add oil if necessary. The best
time to check the engine oil level is when the oil is warm.
1. After stopping the engine, wait a few minutes for the
oil to drain back to the oil pan.
2. Pull out the oil level indicator (dip stick).
3. Wipe it clean, and push the oil level indicator back
down all the way.
4. Pull out the oil level indicator and look at the oil level
on it.5. Add oil, if needed, to keep the oil level above the
lower mark. Avoid overfilling the engine, since this
may cause engine damage.
6. Push the indicator all the way back down into the
engine after taking the reading.
If you check the oil level when the oil is cold, do not run
the engine first. The cold oil will not drain back to the
pan fast enough to give a true oil level reading.
Engine Coolant Level and Condition
Check the coolant level in the coolant reservoir tank
and add coolant if necessary. Inspect the coolant.
Replace dirty or rusty coolant.
Windshield Washer Fluid Level
Check the washer fluid level in the reservoir. Add fluid if
necessary.
AT LEAST TWICE A MONTH
Tire And Wheel Inspection and Pressure
Check
Check the tire for abnormal wear or damage. Also check
for damaged wheels. Check the tire pressure when the
tires are cold ( check the spare also, unless it is a
stowaway). Maintain the recommended pressures. Refer
to “Tire and Wheel” is in section 0B.
AT LEAST MONTHLY
Light Operation
Check the operation of the license plate light, the
headlights (including the high beams), the parking lights,
the fog lights, the taillight, the brake lights, the turn
signals, the backup lights and the hazard warning flasher.
Fluid Leak Check
Periodically inspect the surface beneath the vehicle for
water, oil, fuel or other fluids, after the vehicle has been
parked for a while. Water dripping from the air
conditioning system after use is normal. If you notice
fuel leaks or fumes, find the cause and correct it at once.
AT LEAST TWICE A YEAR
Power Steering System Reservoir Level
Check the power steering fluid level. Keep the power
steering fluid at the proper level. Refer to
Section 6A,
Power Steering System.
Brake Master Cylinder Reservoir Level
Check the fluid and keep it at the proper level. A low
fluid level can indicate worn disc brake pads which may
need to be serviced. Check the breather hole in the
reservoir cover to be free from dirt and check for an
open passage.

1A1-2 GENERAL ENGINE INFORMATION
Application
Idle Speed (rpm)
Fuel Injection Pressure (kg/cm²)
Oil Capacity (liter)
Lubrication Type
Oil Filter Type
Fuel
ENGINE SPECIFICATIONS (Cont'd)
E32 Engine
700 ± 50
3 - 4
8.2
Forced by Gear Pump
Full Flow with Paper Filter
Unleaded Gasoline
MSE 3.62S/3.53S (Motorsteuer Elektronik : German)
MSE : Engine Control Electronic
3.62S : 6 Cylinder Version
3.53S : 4 Cylinder Version

GENERAL ENGINE INFORMATION 1A1-7
OIL LEAK DIAGNOSIS
Most fluid oil leaks are easily located and repaired by
visually finding the leak and replacing or repairing the
necessary parts. On some occasions a fluid leak may
be difficult to locate or repair. The following procedures
may help you in locating and repairing most leaks.
Finding the Leak
1. Identify the fluid. Determine whether it is engine oil,
automatic transmission fluid, power steering fluid, etc.
2. Identify where the fluid is leaking from.
2.1 After running the vehicle at normal operating
temperature, park the vehicle over a large sheet
of paper.
2.2 Wait a few minutes.
2.3 You should be able to find the approximate
location of the leak by the drippings on the
paper.
3. Visually check around the suspected component.
Check around all the gasket mating surfaces for
leaks. A mirror is useful for finding leaks in areas that
are hard to reach.
4. If the leak still cannot be found, it may be necessary
to clean the suspected area with a degreaser, steam
or spray solvent.
4.1 Clean the area well.
4.2 Dry the area.
4.3 Operate the vehicle for several miles at normal
operating temperature and varying speeds.
4.4 After operating the vehicle, visually check the
suspected component.
4.5 If you still cannot locate the leak, try using the
powder or black light and dye method.
Powder Method
1. Clean the suspected area.
2. Apply an aerosol-type powder (such as foot powder)
to the suspected area.
3. Operate the vehicle under normal operating
conditoins.
4. Visually inspect the suspected component. You
should be able to trace the leak path over the white
powder surface to the source.
Black Light and Dye Method
A dye and light kit is available for finding leaks, Refer to
the manufacturer's directions when using the kit.
1. Pour the specified amount of dye into the engine oil
fill tube.2. Operate the vehicle normal operating conditions as
directed in the kit.
3. Direct the light toward the suspected area. The dyed
fluid will appear as a yellow path leading to the
source.
Repairing the Leak
Once the origin of the leak has been pinpointed and
traced back to its source, the cause of the leak must be
determined n order for it to be repaired properly. If a
gasket is replaced, but the sealing flange is bent, the
new gasket will not repair the leak. The bent flange must
be repaired also. Before attempting to repair a leak,
check for the following conditions and correct them as
they may cause a leak.
Gaskets
lThe fluid level/pressure is too high.
lThe crankcase ventilation system is malfunctioning.
lThe fasteners are tightened improperly or the threads
are dirty or damaged.
lThe flanges or the sealing surface is warped.
lThere are scratches, burrs or other damage to the
sealing surface.
lThe gasket is damaged or worn.
lThere is cracking or porosity of the component.
lAn improper seal was used (where applicable).
Seals
lThe fluid level/pressure is too high.
lThe crankcase ventilation system is malfunctioning.
lThe seal bore is damaged (scratched, burred or
nicked).
lThe seal is damaged or worn.
lImproper installation is evident.
lThere are cracks in the components.
lThe shaft surface is scratched, nicked or damaged.
lA loose or worn bearing is causing excess seal wear.
DIAGNOSIS

1A1-12 GENERAL ENGINE INFORMATION
Leakage Test
1. Warm the engine up to normal operating temperature.
2. Disconnect the negative battery cable.
3. Remove the spark plugs.
4. Check the coolant level by opening the coolant surge tank
cap and replenish if insufficient.
5. Open the engine oil filler cap.
6. Connect the tester to air pressure line and adjust the scale
of tester.
7. Install the connecting hose to spark plug hole.
9. Connect the connecting hose to tester and measure the
leakage volume after blowing up 5bar of compressed air.
Notice
Measure the leakage volume in the completely opening
condition of throttle valve by pulling the acceleration cable.
10. Perform the pressure test according to the firing order.
Notice
Firing Order : 1 - 5 - 3 - 6 - 2 - 4
11. Compare the leakage pressure with the specifications.8. Position the piston of No.1 cylinder at TDC by rotating the
crankshaft.

1A2-2 GENERAL ENGINE INFORMATION
E20 Engine
¬
¬
¬
¬
¬
¬ Application
Idle Speed (rpm)
Fuel Injection Pressure (kg/cm²)
Oil Capacity (liter)
Lubrication Type
Oil Filter Type
Fuel
ENGINE SPECIFICATIONS (Cont'd)
E23 Engine
750 ± 50
3.2 - 4.2
7.5
Forced by Gear Pump
Full Flow with Paper Filter
Unleaded Gasoline
MSE 3.62S/3.53S (Motorsteuer Elektronik : German)
MSE : Engine Control Electronic
3.62S : 6 cylinder version
3.53S : 4 cylinder version

1A2-8 GENERAL ENGINE INFORMATION
OIL LEAK DIAGNOSIS
Most fluid oil leaks are easily located and repaired by
visually finding the leak and replacing or repairing the
necessary parts. On some occasions a fluid leak may
be difficult to locate or repair. The following procedures
may help you in locating and repairing most leaks.
Finding the Leak
1. Identify the fluid. Determine whether it is engine oil,
automatic transmission fluid, power steering fluid, etc.
2. Identify where the fluid is leaking from.
2.1 After running the vehicle at normal operating
temperature, park the vehicle over a large sheet
of paper.
2.2 Wait a few minutes.
2.3 You should be able to find the approximate
location of the leak by the drippings on the
paper.
3. Visually check around the suspected component.
Check around all the gasket mating surfaces for
leaks. A mirror is useful for finding leaks in areas that
are hard to reach.
4. If the leak still cannot be found, it may be necessary
to clean the suspected area with a degreaser, steam
or spray solvent.
4.1 Clean the area well.
4.2 Dry the area.
4.3 Operate the vehicle for several miles at normal
operating temperature and varying speeds.
4.4 After operating the vehicle, visually check the
suspected component.
4.5 If you still cannot locate the leak, try using the
powder or black light and dye method.
Powder Method
1. Clean the suspected area.
2. Apply an aerosol-type powder (such as foot powder)
to the suspected area.
3. Operate the vehicle under normal operating
conditoins.
4. Visually inspect the suspected component. You
should be able to trace the leak path over the white
powder surface to the source.
Black Light and Dye Method
A dye and light kit is available for finding leaks, Refer to
the manufacturer's directions when using the kit.
1. Pour the specified amount of dye into the engine oil
fill tube.
2. Operate the vehicle normal operating conditions as
directed in the kit.
3. Direct the light toward the suspected area. The dyed
fluid will appear as a yellow path leading to the
source.
Repairing the Leak
Once the origin of the leak has been pinpointed and
traced back to its source, the cause of the leak must be
determined n order for it to be repaired properly. If a
gasket is replaced, but the sealing flange is bent, the
new gasket will not repair the leak. The bent flange must
be repaired also. Before attempting to repair a leak,
check for the following conditions and correct them as
they may cause a leak.
Gaskets
lThe fluid level/pressure is too high.
lThe crankcase ventilation system is malfunctioning.
lThe fasteners are tightened improperly or the threads
are dirty or damaged.
lThe flanges or the sealing surface is warped.
lThere are scratches, burrs or other damage to the
sealing surface.
lThe gasket is damaged or worn.
lThere is cracking or porosity of the component.
lAn improper seal was used (where applicable).
Seals
lThe fluid level/pressure is too high.
lThe crankcase ventilation system is malfunctioning.
lThe seal bore is damaged (scratched, burred or
nicked).
lThe seal is damaged or worn.
lImproper installation is evident.
lThere are cracks in the components.
lThe shaft surface is scratched, nicked or damaged.
lA loose or worn bearing is causing excess seal wear.
DIAGNOSIS

GENERAL ENGINE INFORMATION 1A2-13
Leakage Test
1. Warm the engine up to normal operating temperature.
2. Disconnect the negative battery cable.
3. Remove the spark plugs.
4. Check the coolant level by opening the coolant surge tank
cap and replenish if insufficient.
5. Open the engine oil filler cap.
6. Connect the tester to air pressure line and adjust the scale
of tester.
7. Install the connecting hose to spark plug hole.
9. Connect the connecting hose to tester and measure the
leakage volume after blowing up 5bar of compressed air.
Notice
Measure the leakage volume in the completely opening
condition of throttle valve by pulling the acceleration cable.
10. Perform the pressure test according to the firing order.
Notice
Firing Order : 1 - 3 - 4 - 2
11. Compare the leakage pressure with the specifications.8. Position the piston of No.1 cylinder at TDC by rotating the
crankshaft.

1A3-2 GENERAL ENGINE INFORMATION
OM 662 LA
720 - 820
135 - 143
8.0 - 9.5
Forced by Gear Pump
Combined Full-Flow and Partial Flow
Filter
Diesel Application
Idle Speed (rpm)
Fuel Injection Pressure (bar)
Oil Capacity (liter)
Lubrication Type
Oil Filter Type
Fuel
ENGINE SPECIFICATIONS (Cont'd)
OM661LA
750 - 850
135 - 143
6.5 - 8.0
Forced by Gear Pump
Combined Full-Flow and Partial Flow
Filter
Diesel

1A3-10 GENERAL ENGINE INFORMATION
OIL LEAK DIAGNOSIS
Most fluid oil leaks are easily located and repaired by
visually finding the leak and replacing or repairing the
necessary parts. On some occasions a fluid leak may
be difficult to locate or repair. The following
procedures may help you in locating and repairing
most leaks.
Finding the Leak
1. Identify the fluid. Determine whether it is engine
oil, automatic transmission fluid, power steering
fluid, etc.
2. Identify where the fluid is leaking from.
2.1 After running the vehicle at normal operating
temperature, park the vehicle over a large
sheet of paper.
2.2 Wait a few minutes.
2.3 You should be able to find the approximate
location of the leak by the drippings on the
paper.
3. Visually check around the suspected component.
Check around all the gasket mating surfaces for
leaks. A mirror is useful for finding leaks in areas
that are hard to reach.
4. If the leak still cannot be found, it may be
necessary to clean the suspected area with a
degreaser, steam or spray solvent.
4.1 Clean the area well.
4.2 Dry the area.
4.3 Operate the vehicle for several miles at
normal operating temperature and varying
speeds.
4.4 After operating the vehicle, visually check the
suspected component.
4.5 If you still cannot locate the leak, try using the
powder or black light and dye method.
Powder Method
1. Clean the suspected area.
2. Apply an aerosol-type powder (such as foot
powder) to the suspected area.
3. Operate the vehicle under normal operating
conditions.
4. Visually inspect the suspected component. You
should be able to trace the leak path over the white
powder surface to the source.
Black Light and Dye Method
A dye and light kit is available for finding leaks, Refer
to the manufacturer's directions when using the kit.1. Pour the specified amount of dye into the engine
oil fill tube.
2. Operate the vehicle normal operating conditions
as directed in the kit.
3. Direct the light toward the suspected area. The
dyed fluid will appear as a yellow path leading to
the source.
Repairing the Leak
Once the origin of the leak has been pinpointed and
traced back to its source, the cause of the leak must
be determined n order for it to be repaired properly. If
a gasket is replaced, but the sealing flange is bent,
the new gasket will not repair the leak. The bent flange
must be repaired also. Before attempting to repair a
leak, check for the following conditions and correct
them as they may cause a leak.
Gaskets
lThe fluid level/pressure is too high.
lThe crankcase ventilation system is malfunctioning.
lThe fasteners are tightened improperly or the
threads are dirty or damaged.
lThe flanges or the sealing surface is warped.
lThere are scratches, burrs or other damage to the
sealing surface.
lThe gasket is damaged or worn.
lThere is cracking or porosity of the component.
lAn improper seal was used (where applicable).
Seals
lThe fluid level/pressure is too high.
lThe crankcase ventilation system is malfunctioning.
lThe seal bore is damaged (scratched, burred or
nicked).
lThe seal is damaged or worn.
lImproper installation is evident.
lThere are cracks in the components.
lThe shaft surface is scratched, nicked or damaged.
lA loose or worn bearing is causing excess seal
wear.
DIAGNOSIS