air SUZUKI GRAND VITARA 1999 2.G Service Owners Manual

YH4
GRAND
VITARA
Pressure ABCD SWITCH
ON
(Continuity)
OFF
(No continuity)
AIR CONDITIONING (OPTIONAL) 1B-47
DUAL PRESSURE SWITCH
INSPECTION
1) Check dual pressure switch (1) on liquid pipe for continuity at
normal temperature (approx. 25
C (77
F)) when A / C system
has a proper charge of refrigerant and when A / C system (com-
pressor) is under operation. In each of these cases, switch
should show proper continuity.
2) Using a manifold gauge set, check switch for operation at speci-
fied pressure as shown, refer to ªPERFORMANCE DIAGNO-
SISº in this section.
Switch ON : above ªCº and below ªDº
Switch OFF : below ªAº or above ªBº
ªAº: Approx. 200 kPa (2.0 kg / cm
2)
ªBº: Approx. 3200 kPa (32 kg / cm
2)
ªCº: Approx. 230 kPa (2.3 kg / cm
2)
ªDº: Approx. 2800 kPa (28 kg / cm
2)
Tightening torque:
Dual pressure switch: 10 N
.m (1.0 kg-m, 7.5 lb-ft)

YH4
GRAND
VITARA
3. Compressor and condenser cooling fan fuse
1B-48 AIR CONDITIONING (OPTIONAL)
A / C COMPRESSOR RELAY AND A / C
CONDENSER COOLING FAN RELAY
INSPECTION
1) Disconnect negative (±) cable at battery.
2) Remove condenser cooling fan motor relay (2) and / or compres-
sor relay (1) from vehicle.
3) Check that there is no continuity between terminal ªcº and ªdº.
If there is continuity, replace relay.
4) Connect battery positive (+) terminal to terminal ªbº of relay.
Connect battery negative (±) terminal ªaº of relay.
Check continuity between terminal ªcº and ªdº.
If there is no continuity when relay is connected to the battery,
replace relay.

YH4
GRAND
VITARA
For CAMI production vehicle
For IWATA production vehicle
2. High pressure side (Delivery side hose)
3. Lower pressure side (Suction side pipe)
AIR CONDITIONING (OPTIONAL) 1B-49
COMPRESSOR ASSEMBLY
CAUTION:
None of refrigerant, compressor oil and component parts is interchangeable between two types of A / C:
one using CFC-12 (R-12) and the other using HFC-134a (R-134a).
For identification between these two types, refer to page 1B-2.
When replenishing or changing refrigerant and compressor oil and when replacing parts, make sure
that the material or the part to be used is appropriate to the A / C installed in the vehicle being serviced.
Use of incorrect refrigerant or compressor oil will result in leakage of refrigerant, damage in parts or
other faulty condition.
PRECAUTION
When servicing the compressor, keep dirt or foreign material away from getting on or into the compressor parts
and system. Clean tools and a clean work area are important for proper service.
The compressor connection and the outside of the compressor should be cleaned before any ªOn-vehicleº repair
or before removal of the compressor. The parts must be kept clean at all times and any parts to be reassembled
should be cleaned with Trichloroethane, naphtha, kerosene or equivalent solvent and dried with dry air. Use only
lint free cloths to wipe parts.
The operations described are based on bench overhaul with compressor removed from the vehicle, except as
noted. They have been prepared in order of accessibility of the components.
When compressor is removed from the vehicle for servicing, the oil remaining in the compressor should be dis-
carded and new refrigerant oil added to the compressor.
Minor repair procedures may be done on the vehicle without discharging the system. Major repair procedures re-
quire that the system be discharged of refrigerant.
INSPECTION
1) Install manifold gauge set (1) as shown in the figure.
2) Close Hi (4) and Lo (5) hand valves.
3) Run engine at fast idle.
4) Check compressor assembly for following items.
If any of the above checks indicated a defect, repair compressor
assembly.

High pressure gauge reading is not low and low pressure
gauge reading is not higher than normal.

Metallic sound.

Leakage from shaft seal.

YH4
GRAND
VITARA
1B-50 AIR CONDITIONING (OPTIONAL)
REMOVAL
1) Run engine at idle with A / C ON for 10 minutes.
2) Disconnect negative (±) cable at battery.
3) Recover refrigerant from refrigeration system using recovery
and recycling equipment.
NOTE:
The amount of compressor oil at removed must be mea-
sured and the same amount must be poured when installing
the compressor.
4) Disconnect thermal protector lead wire.
5) Disconnect suction and discharge hoses from compressor as-
sembly.
NOTE:
Cap open fitting immediately to keep moisture out of sys-
tem.
6)For G16 engine:
Remove compressor drive belt by loosening compressor as-
sembly mounting bolts.
For J20 engine:
Remove generator belt. Refer to Section 6H.
For H25 engine:
Remove compressor drive belt by loosening tension pulley bolt.
7) Remove compressor with magnet clutch assembly from its
mount.
8) If compressor assembly is replaced. Drain oil from compressor
assembly, and measure its amount.

YH4
GRAND
VITARA
AIR CONDITIONING (OPTIONAL) 1B-51
G16 engine
J20 engine
H25 engine
3. Compressor pulley
4. Crankshaft pulley
INSTALLATION
FOR IWATA PRODUCTION VEHICLE
1) Pour new compressor oil. The amount must be the same with
the amount measured in REMOVAL.
NOTE:
Compressor assembly supplied from factory is filled up
with following amount of oil.
Amount of oil in compressor: 120 cm
3 (120 cc, 7.5 in3)
2)For G16 engine:
Install compressor assembly temporarily to bracket, then install
compressor drive belt (2).
For J20 and H25 engines:
Install compressor assembly to its bracket.
Tighten bolts (a) first, then (b).
Tightening Torque
(a), (b): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
3) Connect suction and discharge hoses to compressor assembly.
4)For G16 engine:
Tension compressor drive belt (2) by tightening compressor as-
sembly mounting bolts. Refer to Section 3B1 for drive belt ten-
sion.
Tighten bolt (a) first, then (b).
Tightening Torque
(a), (b): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
For J20 engine:
Install generator belt (1). Refer to Section 6H for details.
For H25 engine:
Install compressor drive belt (2). Refer to Section 3B1 for instal-
lation and belt tension.
5) Connect thermal protector lead wire.
6) Evacuate and charge system according to previously described
procedure.
CAUTION:
Be sure to use HFC-134a (R-134a) compressor oil.

YH4
GRAND
VITARA
1B-52 AIR CONDITIONING (OPTIONAL)
G16 engine
J20 engine
3. Compressor pulley
4. Crankshaft pulley
FOR CAMI PRODUCTION VEHICLE
1) Pour new compressor oil. The amount must be the same with
the amount measured in REMOVAL.
NOTE:
Compressor assembly supplied from factory is filled up
with the following amount of oil.
Amount of oil in compressor: 120 cm
3 (120 cc, 7.5 in3)
2)For G16 engine:
Install compressor assembly temporarily to bracket, then install
compressor drive belt (2).
For J20 engine:
Install compressor assembly to its bracket.
Tighten bolts (a).
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
3) Connect suction and discharge hoses to compressor assembly.
4)For G16 engine:
Tension compressor drive belt (2) by tightening compressor as-
sembly mounting bolts. Refer to Section 3B1 for drive belt ten-
sion.
Tighten bolt (a) first, then (b).
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
For J20 engine:
Install generator belt (1). Refer to Section 6H for details.
5) Connect thermal protector lead wire.
6) Evacuate and charge system according to previously described
procedure.
CAUTION:
Be sure to use HFC-134a (R-134a) compressor oil.

YH4
GRAND
VITARA
AIR CONDITIONING (OPTIONAL) 1B-53
1. Clutch plate bolt
2. Clutch plate
3. Circlip
4. Clutch pulley
5. Shim
6. Clutch coil
7. Compressor 567
MAGNET CLUTCH ASSEMBLY (FOR DENSO)
INSPECTION

Inspect clutch plate and clutch pulley for signs of oil.

Check clutch pulley for noise and grease leakage.

Using an ohmmeter, measure resistance of clutch coil between
clutch lead wire (1) and compressor body (2).
If measured resistance is not within tolerance, replace magnet
clutch assembly.
Standard resistance: 3.5 ± 5.0
at 20C, 68F
REMOVAL
1) Remove compressor assembly from vehicle. Refer to ªCOM-
PRESSOR ASSEMBLYº in this section.
2) Fix clutch plate (1) with special tool (A) and remove clutch plate
bolt.
Special Tool
(A): 09991-06020
NOTE:
Do not reuse clutch plate bolt.
3) Using special tool (B), remove clutch plate (1).
Special Tool
(B): 09991-06030

YH4
GRAND
VITARA
1B-54 AIR CONDITIONING (OPTIONAL)
2
4) Remove shims from shaft.
5) Using special tool (C), remove circlip.
Special Tool
(C): 09900-06107
6) Remove clutch coil lead wire clamp screw, and remove clutch
coil read wire ground terminal.
7) Remove clutch pulley with puller (1) from compressor (2).
NOTE:
Be careful not to damage pulley when tapping magnet
clutch assembly.
8) Remove clutch coil.
Special tool
(C): 09900-06107
INSTALLATION
1) Install clutch coil (2).
Protrusion on under side of coil ring must match hole in com-
pressor (3) to prevent movement ant correctly locate lead wire.
2) Using special tool (C), install snap ring (1) as shown.
Special Tool
(C): 09990-06107
3) Install clamp portion and ground terminal of lead wire.

YH4
GRAND
VITARA
AIR CONDITIONING (OPTIONAL) 1B-55
1. Armature plate
4) Clutch pulley (1).
(1) Set clutch pulley squarely over clutch pulley installation boss.
(2) Place special tool (D) onto clutch pulley bearing.
Ensure that edge rests only on inner race of bearing.
(3) Install snap ring.
Special Tool
(D): 09991-06010
CAUTION:
Be careful not to scratch bearing seal.
5) Adjust clearance, between clutch plate (1) and clutch pulley by
putting shim on compressor shaft.
Standard clearance ªaº: 0.3 ± 0.5 mm (0.012 ± 0.02 in.)
6) Tighten new clutch plate bolt as specified below.
Tightening Torque
(a): 14 N
.m (1.4 kg-m, 10.5 lb-ft)
Special Tool
(A): 09991-06020

YH4
GRAND
VITARA
1B-56 AIR CONDITIONING (OPTIONAL)
1. Clutch plate bolt
2. Clutch plate
3. Circlip
4. Clutch pulley
5. Washer
6. Shim
7. Oil felt ring
8. Clutch coil
9. Lip type seal
10. Compressor front head
11. Compressor body component
12. O-ring
13. Compressor thermal switch
3. Washer
(if equipped)1. Thermal switch
2. Ohmmeter
MAGNET CLUTCH ASSEMBLY (FOR SEIKO SEIKI)
INSPECTION
MAGNET CLUTCH

Inspect clutch plate and clutch pulley for signs of oil.

Check clutch pulley bearings for noise and grease leakage.

Using and ohmmeter, measure resistance of clutch coil between
clutch coil lead wire (1) and compressor body.
If measured resistance is not within tolerance, replace coil.
Standard resistance: 2.5 ± 4.5
at 20C, 68F
COMPRESSOR THERMAL SWITCH
Use an ohmmeter to check thermal switch for continuity. If there is
no continuity, replace it.
REMOVAL
1) Remove compressor assembly from vehicle. Refer to COM-
PRESSOR ASSEMBLY in this section.
2) Fix clutch plate (1) with special tool (A) and remove clutch plate
bolt (2).
Special Tool
(A): 09991-06020
NOTE:
Do not reuse armature plate nut.