1995 TOYOTA SUPRA service

SERVICE TOOLS FOR HFC134a AIR
CONDITIONING
When servicing HFC134a air conditioning systems always
use the HFC134a dedicated manifold gauges, gas leak de-
tector and vacuum pump adaptor.
1. USE MANIFOLD GAUGES FOR HFC134a AIR
CONDITIONING
Always use HFC134a dedicated manifold gauges to prevent
CFC 12 and CFC 12 compressor oil contaminating the
HFC134a system.
2. USE HFC134a GAS LEAK DETECTOR
Similarly, always use an HFC134a dedicated leak detector.
The CFC12 leak detector is not sufficiently sensitive.
3. USE VACUUM PUMP ADAPTER
By connecting a vacuum pump adapter, the vacuum pump
can be used for both HFC134a and CFC12 air conditioning
systems.
The vacuum pump adaptor has an internal magnetic valve.
When evacuation is completed and the vacuum pump switch
is turned off, the magnetic valve opens allowing the introduc-
tion atmospheric air into the manifold gauges to prevent the
back flow of oil from the vacuum pump into the gauge hose.
CAUTION:
Be sure to turn off the manifold gauge valve immediately
after evacuating the system. Then you may switch off the
vacuum pump. If this order is reversed, the line will be
temporarily open to atmosphere. AC±4
± AIR CONDITIONING SYSTEMGENERAL DESCRIPTION

CAUTION:
wBe sure to connect both the high and low pressure
quick±connectors onto the A/C system when evacuating.
If only one side is connected, the system would be open
to atmosphere through the other connector, making it
impossible to maintain vacuum.
wBe sure to turn off the manifold gauge valve immediately
after evacuating the system. Then you may switch off the
vacuum pump.
PRECAUTIONS WHEN CHARGING
REFRIGERANT
1. DO NOT OPERATE COMPRESSOR WITHOUT ENOUGH
REFRIGERANT IN REFRIGERANT SYSTEM
If there is not enough refrigerant in the refrigerant system, oil
lubrication will be insufficient and compressor burnout may
occur, so take care to avoid this.
2. DO NOT OPEN HIGH PRESSURE MANIFOLD VALVE
WHILST COMPRESSOR IS OPERATING
If the high pressure valve is opened, refrigerant flows in the
reverse direction and could cause the charging cylinder to
rupture, so open and close the low pressure valve only.
3. BE CAREFUL NOT TO OVERCHARGE SYSTEM WITH
REFRIGERANT
If refrigerant is overcharged, it causes problems such as in-
sufficient cooling, poor fuel economy, engine overheating
etc.
SUPPLEMENTAL RESTRAINT SYSTEM
(SRS)
Failure to carry out service operations in the correct se-
quence could cause the supplemental restraint system to
deploy, possibly leading to a serious accident.
During removal or installation of the parts and the yellow wire
harness and connector for the airbag is necessary, refer to
the precautionary notices in the RS section before carrying
out operation. AC±6
± AIR CONDITIONING SYSTEMGENERAL DESCRIPTION

PREPARATION
SST (SPECIAL SERVICE TOOLS)
Air Conditioner Service Tool Set
Refrigerant Drain Service Valve
T±Joint
Quick Coupler
Quick Coupler
Refrigerant Charging Gauge
Refrigerant Charging Hose
Refrigerant Charging Hose
Refrigerant Charging Hose
Magnetic Clutch Remover
Magnetic Clutch Stopper
Snap Ring Pliers
Gas Leak Detector Assembly
Discharge (diam. 16 mm)
Suction (diam. 16 mm)
Suction (Blue)
Discharge (Red)
Utility (Green)
± AIR CONDITIONING SYSTEMPREPARATIONAC±9

USE OF MANIFOLD GAUGE SET
MANIFOLD GAUGE SET INSTALLATION
1. CONNECT CHARGING HOSES TO MANIFOLD GAUGE
SET
Tighten the nuts by hand.
CAUTION: Do not connect the wrong hoses.
2. CONNECT QUICK CONNECTORS TO CHARGING HOSES
Tighten the nuts by hand.
3. CLOSE BOTH HAND VALVES OF MANIFOLD GAUGE
SET
4. REMOVE CAPS FROM SERVICE VALVES ON
REFRIGERANT LINE
5. CONNECT QUICK CONNECTORS TO SERVICE VALVES
HINT: Push the quick connector onto the service valve, then
slide the sleeve of the quick connector downward to lock it.
MANIFOLD GAUGE SET REMOVAL
1. CLOSE BOTH HAND VALVES OF MANIFOLD GAUGE
SET
2. DISCONNECT QUICK CONNECTORS FROM SERVICE
VALVES ON REFRIGERANT LINE
HINT: Slide the sleeve of the quick connector upward to un-
lock the connector and remove it from the service valve.
3. INSTALL CAPS TO SERVICE VALVES ON REFRIGERANT
LINE
± AIR CONDITIONING SYSTEMUSE OF MANIFOLD GAUGE SETAC±11

SERVICE SPECIFICATIONS
SERVICE DATA
 Refrigerant charge volume 700 + 50g. 24.96 + 1.76 oz.
 Idle speed 
 2JZ±GE (M/T) 
 
  Magnetic clutch not engaged
 
 Approx. 700 rpm
  Magnetic clutch engaged Approx. 900 rpm
 2JZ±GE (A/T) 
 
  Magnetic clutch not engaged 
 Approx. 700 rpm
  Magnetic clutch engaged Approx. 800 rpm
 2JZ±GTE 
  Magnetic clutch not engaged Approx. 650 rpm 
  Magnetic clutch engaged
 
 Approx. 800 rpm
TORQUE SPECIFICATIONS
 
 Part tightened 
 NVm 
 kgfVcm 
 ftVlbf
 Suction hose x Compressor 10 100 7
 Discharge hose x Compressor 10 100 7
 Compressor x Engine Stud bolt 26 265 19.2 
 Other bolts and nut
 
 52
 
 530
 
 38.3
 Liquid tube x Receiver 5.4 55 48 in.Vlbf
 Liquid tube x Condenser 10 100 7
 
 Discharge tube x Condenser 
 10 
 100 
 7
 Expansion valve x Evaporator 5.4 55 48 in.Vlbf
 Suction tube x A/C unit 10 100 7
 Liquid tube x A/C unit 10 100 7 
 Pressure switch x Liquired tube
 
 10
 
 100
 
 7
 Revolution detecting sensor x Compressor 6.0 60 52 in.Vlbf
 Condenser upper mounting x Body 4.1 42 36 in.Vlbf
 
 Liquid lines 
 10 
 100 
 7
 Discharge lines 10 100 7
 Suction lines 10 100 7
± AIR CONDITIONING SYSTEMSERVICE SPECIFICATIONSAC±111

INTRODUCTIONHOW TO USE THIS MANUAL -
IN-1
HOW TO USE THIS MANUAL
To assist you in finding your way through the manual, the Section Title and major heading are given
at the top of every page.
PREPARATION
Preparation lists the SST (Special Service Tools), recommended tools, equipment, lubricant and SSM
(Special Service Materials) which should be prepared before beginning the operation and explains the
purpose of each one.
REPAIR PROCEDURES
Most repair operations begin with an overview illustration. It identifies the components and shows how
the parts fit together.
Example:
IN002-0T

INTRODUCTIONGENERAL REPAIR INSTRUCTIONS -
IN-5
the specified seal lock adhesive to the bolt, nut or
threads.
(c) Precoated parts are indicated in the component il-
lustrations by the º
º symbol.
7. When necessary, use a sealer on gaskets to prevent
leaks.
8. Carefully observe all specifications for bolt tightening
torques. Always use a torque wrench.
9. Use of special service tools (SST) and special service ma-
terials (SSM) may be required, depending on the nature
of the repair. Be sure to use SST and SSM where speci-
fied and follow the proper work procedure. A list of SST
and SSM can be found at the preparation of AT section.
10. When replacing fuses, be sure the new fuse has the cor-
rect amperage rating. DO NOT exceed the rating or use
one with a lower rating.
11. To pull apart electrical connectors, pull on the connector
itself, not the wires.
12. Care must be taken when jacking up and supporting the
vehicle. Be sure to lift and support the vehicle at the prop-
er locations.
(a) If the vehicle is to be jacked up only at the front or
rear end, be sure to block the wheels at the opposite
end in order to ensure safety.
(b) After the vehicle is jacked up, be sure to support it on
stands. It is extremely dangerous to do any work on
a vehicle raised on a jack alone, even for a small job
that can be finished quickly.

INTRODUCTIONABBREVIATIONS USED IN THIS MANUAL -
IN-6
ABBREVIATIONS USED IN THIS
MANUAL
A/T ATMAutomatic Transmission
AT FAutomatic Transmission Fluid
B0Overdrive Brake
B1Second Coast Brake
B2Second Brake
B3First and Reverse Brake
C0Overdrive Direct Clutch
C1Forward Clutch
C2Direct Clutch
DDisc
FFlange
F0Overdrive One-way Clutch
F1No.1 One-way Clutch
F2No.2 One-way Clutch
FIPGFormed in Place Gasket
MPMultipurpose
O/DOverdrive
PPlate
SSMSpecial Service Materials
SSTSpecial Service Tools
w/with
w/owithout
IN01H-0K