1998 SUZUKI GRAND VITARA engine oil

YH4
GRAND
VITARA
MAINTENANCE AND LUBRICATION 0B-25
Steering

Check to ensure that steering wheel is free from in-
stability, or abnormally heavy feeling.

Check that the vehicle does not wander or pull to
one side.
Engine

Check that engine responds readily at all speeds.

Check that engine is free from abnormal noise and
abnormal vibration.
Body, Wheels and Power Transmitting System
Check that body, wheels and power transmitting sys-
tem are free from abnormal noise and abnormal
vibration or any other abnormal condition.
Meters and Gauge
Check that speedometer, odometer, fuel meter, tem-
perature gauge, etc. are operating accurately.
Lights
Check that all lights operate properly.
Windshield Defroster
Periodically check that air comes out from defroster
outlet when operating heater or air conditioning.
Set fan switch lever to ªHIº position for this check.
RECOMMENDED FLUIDS AND LUBRICANTS
Engine oilSG, SH or SJ (Refer to engine oil viscosity chart in item 1-4)
Engine coolant (Ethylene glycol
base coolant)ªAntifreeze / Anticorrosion coolantº
Brake fluidDOT 3
Manual transmission oilRefer to Section 7A or 7A1Transfer oilRefer to Section 7A or 7A1.
Differential oil (front & rear)Refer to Section 7E or 7F.
Automatic transmission fluid and
Power steering fluidRefer to Section 3B1 or 7B1.
Door hingesEngine oil or water resistance chassis greaseHood latch assemblyEngine oil or water resistance chassis grease
Key lock cylinderSpray lubricant

YH4
GRAND
VITARA
HEATER AND VENTILATION 1A-17
1. Dash panel (engine room) 2. Nuts
REMOVAL
WARNING:
Failure to follow the following procedure and WARNING
may cause air bag deployment, personal injury, damage to
parts, or air bag being unable to deploy.

Never rest a steering column assembly on steering wheel
with air bag (inflator) module face down and column verti-
cal.

When handling the air bag (inflator) modules (driver and
passenger), be careful not to drop it or apply an impact to
it. If an excessive impact was applied (e.g., dropped from
a height of 91.4 cm (3 feet) or more, never attempt disas-
sembly or repair but replace it with a new one.

When grease, cleaning agent. Oil, water, etc. has got onto
air bag (inflator) modules (driver and passenger), wipe off
immediately with a dry cloth.
1) Disconnect negative (±) cable at battery.
2) Disable air bag system, if equipped. Refer to DISABLING AIR
BAG SYSTEM in Section 10B.
3) Drain engine coolant and disconnect heater hose (1) from
heater unit.
4) Remove instrument panel, refer to item INSTRUMENT PANEL
REMOVAL in Section 9.
5) Remove cooling unit (If equipped).
Refer to item EVAPORATOR (COOLING UNIT) REMOVAL in
Section 1B.
6) Disconnect rear duct (4) from heater unit.
7) Disconnect heater mode control actuator lead wire (1) at cou-
plers.
8) Remove A / C controller (2) (If equipped).
9) Remove SDM (3) (If equipped).
10) Remove heater unit.

YH4
GRAND
VITARA
1B-8 AIR CONDITIONING (OPTIONAL)
DIAGNOSIS OF ABNORMAL NOISE
There are various types of noise, ranging from those produced in the engine compartment to those from the pas-
senger compartment, also from rumbling noises to whistling noises.
ABNORMAL NOISE FROM COMPRESSOR
ConditionPossible CauseCorrection

During compressor operation, a
rumbling noise is heard
proportional to engine
revolutions.
Inadequate clearance in piston
area (piston or swash-plate).
Repair or replace compressor as
necessary.

A loud noise is heard at a certain
rpm, disproportionately to engine
revolution.
Loose or faulty V-belt.

Loose mounting bolts.
Adjust V-belt tension, or
replace belt.

Retighten mounting bolts.

A loud rattle is heard at low
engine rpm.
Loose compressor center bolt.
Retighten center bolt.

Replace compressor if it was
operated in this condition for a
long time.
ABNORMAL NOISE FROM MAGNETIC CLUTCH
ConditionPossible CauseCorrection

A rumbling noise is heard when
compressor is not operating.
Worn or damaged bearings.
Replace bearings.

A chattering noise is heard when
compressor is engaged.
Faulty clutch gap (excessive).

Worn clutch friction surface.

Compressor oil leaked from shaft
seal, contaminating the friction
surface.
Adjust clutch gap.

Replace clutch.

Replace compressor shaft oil
seal.
ABNORMAL NOISE FROM TUBING
ConditionPossible CauseCorrection

A droning noise is heard inside
vehicle, but not particularly
noticeable in engine
compartment.
Faulty tubing clamps.

Resonance caused by pulsation
from variations in refrigerant
pressure.
Reposition clamps or increase
the number of clamps.

Attach a silencer to tubing, or
modify its position and length.
ABNORMAL NOISE FROM CONDENSER
ConditionPossible CauseCorrection

Considerable vibration in
condenser.
Resonance from condenser
mounting stay and body.
Firmly insert a silencer between
condenser mounting stay and
body.

YH4
GRAND
VITARA
1B-14 AIR CONDITIONING (OPTIONAL)
HIGH PRESSURE CAUGE LOW PRESSURE GAUGE THERMOMETER AT
CENTER DUCT
Insufficient
cooling of
condenser
PERFORMANCE DIAGNOSIS TABLE
TESTING RESULTSPOSSIBLE CAUSEREMEDY
Pressure high
(ªAº area of high side
graph)
Refrigerant overcharged

Expansion valve frozen or clogged

Clogged refrigerant passage of high side

Condenser fan malfunction

Dirty or bent condenser fins

Compressor malfunction (Insufficient oil etc.)

Engine overheat
Recharge

Check expansion valve

Clean or replace

Check condenser fan

Clean or repair

Check compressor

Check engine cooling
system
Pressure low
(ªBº area of high side
graph)
Insufficient refrigerant (Insufficient charge or
leakage)

Expansion valve malfunction (Valve opens too
wide)

Compressor malfunction (Insufficient
compression)
Check for leakage, repair if
necessary and recharge

Check expansion valve

Check compressor
Pressure high
(ªAº area of low side
graph)
Expansion valve malfunction (Valve opens too
wide)

Compressor malfunction (Insufficient
compression)
Check expansion valve

Check compressor
Pressure low
(ªBº area of low side
graph)
Insufficient refrigerant (Insufficient charge or
leakage)

Expansion valve malfunction (Valve opens too
narrow)

Clogged refrigerant passage (Crashed pipe)
Check for leakage, repair if
necessary and recharge

Check expansion valve

Repair or replace
Outlet air temperature
at center duct is high
(Crossing point is in
area ªAº)
Insufficient or excessive charge of refrigerant

Dirty or bent evaporator fins

Air leakage from cooling (heater) unit or air
duct

Malfunctioning, switchover function of damper
in cooling (heater) unit

Compressor malfunction
Check refrigerant
pressure

Clean or repair

Repair or replace

Repair or replace

Check compressor
Outlet air temperature
at center duct is low
(Crossing point is in
area ªBº)
Insufficient air volume from center duct
(Heater blower malfunction)

Compressor malfunction
Check blower motor and
fan

Check compressor
NOTE:
If ambient temperature is within 30 ± 35C (85 ± 95F), it is possible to do using next page table for more
detail diagnosis.

YH4
GRAND
VITARA
AIR CONDITIONING (OPTIONAL) 1B-15
AMBIENT TEMPERATURE WITHIN 30 ± 35C (85 ± 95F)
CONDITION
MANIFOLD
GAUGEMPa
(kg/cm2)
(psi)DETAILCAUSECORRECTION
LoHi
0.23 ± 0.35
(2.3 ± 3.5)
(33 ± 50)1.4 ± 1.75
(14 ± 17.5)
(200 ± 249)
Normal condition.ÐÐÐÐ
Negative
pressure0.5 ± 0.6
(5 ± 6)
(71.2 ± 85.3)

The low pressure side
reads a negative pressure,
and the high pressure side
reads an extremely low
pressure.

Presence of frost around
tubing to and from receiver /
dryer and expansion valve.
Dust particles or water
droplets are either stuck or
frozen inside expansion
valve, preventing the
refrigerant from flowing.
Clean expansion valve.
Replace it if it cannot be
cleaned.

Replace receiver / dryer.

Evacuate the A / C
system and recharge
with fresh refrigerant.
Normal:
0.23 ± 0.35
(2.3 ± 3.5)
(33 ± 50)

Abnormal:
Negative
pressureNormal:
1.4 ± 1.75
(14 ± 17.5)
(200 ± 249)

Abnormal:
0.69 ± 0.98
(7 ± 10)
(100 ± 142)
During A / C operation, the
low pressure side
sometimes indicates
negative pressure, and
sometimes normal
pressure. Also high
pressure side reading
fluctuates between the
abnormal and normal
pressure.
Expansion valve is frozen
due to moisture in the
system, and temporarily
shuts off the refrigeration
cycle.
Replace expansion
valve.

Replace receiver / dryer.

Evacuate A / C system
and recharge with fresh
refrigerant.
0.05 ± 0.15
(0.5 ± 1.5)
(4.2 ± 21.3)
0.69 ± 0.98
(7 ± 10)
(100 ± 142)

Both low and high pressure
sides indicate low readings.

Continuous air bubbles are
visible through sight glass.

Output air is slightly cold.
Insufficient refrigerant in
system. (Refrigerant
leaking)
Using a gas leak
detector, check for leaks
and repair as necessary.

Recharge refrigerant to a
specified amount.
If the pressure reading is
almost 0 when the
manifold gauges are
attached, check for any
leaks, repair them, and
evacuate the system.
0.4 ± 0.6
(4 ± 6)
(56.9 ± 85.3)

Pressure on low pressure
side is high.

Pressure on high pressure
side is low.

Both pressure becoming
equal right after A / C is
turned OFF.
Internal leak in compressor.
Inspect compressor and
repair or replace as
necessary.
035 045

High pressure reading on
both low and high pressure
sides.

Air bubbles are not visible
even when engine rpm is
lowered.
Overcharged A / C system.

Faulty condenser cooling
operation.

Faulty condenser fan
operation.
Adjust refrigerant to
specified amount.

Clean condenser.

Inspect and repair
condenser fan.
0.35 ± 0.45(3.5 ± 4.5)
(50 ± 64)
1.96 ± 2.45
(20 ± 25)
(285 ± 355)

High pressure reading on
both low and high pressure
sides.

Low pressure side tubing is
not cold when touched.

Air bubbles are visible
through sight glass.
Presence of air in A / C
system. (Improperly
evacuated)
Replace receiver / dryer.

Inspect quantity of
compressor oil and
presence of
contaminants in oil.

Evacuate system and
recharge with fresh
refrigerant.
0.45 ± 0.55
(4.5 ± 5.5)
(64 ± 78)

High pressure reading on
both low and high pressure
sides.

Large amount of frost or
dew on the low pressure
side tubing.
Faulty expansion valve.

Refrigerant flow is not
regulated properly.
Replace expansion
valve.

YH4
GRAND
VITARA
1. New compressor
2. Removed compressor
3. Excess oil (A ± B)
1B-32 AIR CONDITIONING (OPTIONAL)
REPLENISHING COMPRESSOR OIL
When replacing air conditioning parts with new ones, it is necessary
to replenish oil by the amount supposedly remaining in each part.
When changing gas only
When it is unavoidable to change gas without replacing any compo-
nent part for engine removal and installation or for some other rea-
son, replenish 20 cc oil. When replenishing gas only, oil replenish-
ment it not necessary.
When replacing compressor
Compressor oil is sealed in each new compressor by the amount
required for air conditioner cycle. Therefore, when using a new
compressor for replacement, drain oil from it by the amount calcu-
lated as follows.
ªCº = ªAº ± ªBº
ªCº: Amount of oil to be drained
ªAº: Amount of oil sealed in a new compressor
ªBº: Amount of oil remaining in removed compressor
When replacing other part
Replaced partAmount of compressor oil
to be replenished
Evaporator25 cc
Condenser15 cc
Receiver / dryer20 cc
Hoses10 cc each
Pipes10 cc each

YH4
GRAND
VITARA
AIR CONDITIONING (OPTIONAL) 1B-39
COOLING UNIT (EVAPORATOR)
REMOVAL
1) Disconnect negative (±) cable at battery.
2) Disable air bag system. Refer to ªDisabling Air Bag Systemº in
Section 10B.
3) Recover refrigerant by using recovery and recycling equipment.
Be sure to follow the instruction manual for the equipment.
The amount of compressor oil removed must be measured and
the same amount added to the system.
4) For G16 and J20 engine
Disconnect suction pipe (1), and liquid pipe (2) from evaporator
(cooling unit).
CAUTION:
As soon as above hose and pipe are disconnected, cap
opened fittings so that moisture and dust may not enter
cooling unit.
5) Remove blower motor unit. Refer to Section 1A ªHEATER AND
VENTILATIONº.
6) Disconnect thermistor wire coupler.
7) Remove cooling unit (evaporator).
DISASSEMBLY (FOR CAMI PRODUCTION VEHICLE)
1) Remove filter (2) from cooling unit (3) assembly by removing fil-
ter cover (1).
2) Remove screws (1) to separate evaporator upper and lower
cases from each other.

YH4
GRAND
VITARA
1B-44 AIR CONDITIONING (OPTIONAL)
REFRIGERANT PIPES AND HOSES
INSPECTION
1) Use a leak tester to check hoses and pipes for any gas leakage.
2) Check each hose or pipe clamp for tightness.
Retighten or replace loose clamp as required, if any.
REMOVAL
1) Recover refrigerant by using recovery and recycling equipment.
Be sure to follow the instruction manual for the equipment.
The amount of compressor oil removed must be measured and
the same amount must be added to the system when reinstal-
ling.
2) Replace defective hose or pipe.
CAUTION:
As soon as the above hose or pipe is disconnected, cap
its opened fitting to prevent moisture and dust from en-
tering.
INSTALLATION
1) Reverse removal procedure to install refrigerant line.
2) Evacuate and charge system. Refer to ªEVACUATINGº and
ªCHARGINGº in this section.
INSPECTION OF IDLE SPEED WITH A / C ON
For G16 and J20 engines model, refer to Section 6E1.
For H25 engine model, refer to Section 6E2.