Heater SUBARU TRIBECA 2009 1.G Service User Guide

AC-7
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
(1) Heater unit case LH (9) Evaporator cover (17) Heater Core
(2) Separator (10) Power transistor (18) Heater pipe clamp
(3) Mode door RR (11) Pipe cover (19) Heater core cover
(4) Mode door FR (12) Drain hose (20) Air mix door actuator LH
(5) Air mix door LH (13) Air mix door actuator RH (21) Aspirator
(6) Air mix door RH (14) Expansion valve
(7) Heater unit case RH (15) Evaporator sensorTightening torque: N·m (kgf-m, ft-lb)
(8) Mode door actuator (16) EvaporatorT: 7.5 (0.76, 5.5)

AC-8
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
2. BLOWER MOTOR UNIT
Front
(1) Upper case (5) Filter coverTightening torque: N·m (kgf-m, ft-lb)
(2) Blower plate (6) Control unit (Auto A/C model)T: 7.5 (0.76, 5.5)
(3) Lower case (7) FRESH/RECIRC door actuator
(4) Blower motor (8) Filter
AC-01269
T
T
(8)
(1)
(2)
(3)
(4)
(5)(6)
(7)

AC-9
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
Rear
3. CONTROL PANEL
(1) Inner case (5) Blower motorTightening torque: N·m (kgf-m, ft-lb)
(2) Evaporator (6) Expansion valveT: 7.5 (0.76, 5.5)
(3) Outer case (7) Expansion tube
(4) Blower resistor (8) Cover
(1) Audio ASSY (3) Center duct (RH) (5) Navigation, MFD control switch
(2) Control panel (4) Center duct (LH)
AC-01315
(1)
(2)
(6)
(7)
(3)
(5)
(4)
(8)
AC-01270
(1)
(2)
(3)
(4)
(5)

AC-10
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
Rear cooler model
(1) Dial (2) Control panel (3) Blower switch
AC-01316
(1)
(3)
(2)

AC-11
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
4. AIR CONDITIONING UNIT
(1) Condenser (5) CompressorTightening torque: N·m (kgf-m, ft-lb)
(2) Hose (High-pressure) (6) O-ringT1: 7.5 (0.76, 5.5)
(3) Hose (Low-pressure) (7) ClampT2: 10 (1.0, 7.4)
(4) Bracket (8) TubeT3: 5 (0.5, 3.7)
AC-01272
(4)
T2
(7)
(8)
(5)
(6)(2)
T3
T1T3
(6)
(6)(1)
T1
(6)
(3)
T1
T3
T3

AC-12
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
5. COMPRESSOR
(1) Compressor upper bracket Tightening torque: N·m (kgf-m, ft-lb)
(2) Compressor T1: 26.5 (2.95, 21.3)
(3) Compressor lower bracket T2: 36 (3.7, 26.6)
AC-01273
(1)
(2)
(3)T1
T2
T2
T2

AC-13
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
6. HEATER DUCT
(1) Side ventilation duct (LH) (5) Upper duct (LH) (9) Side defroster duct (RH)
(2) Side ventilation duct (RH) (6) Upper duct (RH) (10) Rear heater duct (LH)
(3) Center ventilation duct (7) Center duct (RH) (11) Rear heater duct (RH)
(4) Center duct (LH) (8) Side defroster duct (LH)
AC-01274
(7)
(5)
(6)
(10)(11)
(1)
(2)
(9)
(4)
(3)
(8)

AC-14
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
C: CAUTION
1. HFC-134A A/C SYSTEM
•The cooling system components for the HFC-
134a system such as the refrigerant and compres-
sor oil are different from the conventional CFC-12
system components and they are incompatible with
each other.
•Vehicles with the HFC-134a system can be iden-
tified by the label (A) attached to the vehicle.
Before maintenance, check which A/C system is in-
stalled to the vehicle.
2. COMPRESSOR OIL
•HFC-134a compressor oil has no compatibility
with that of CFC-12 system.
•Use only Denso Oil 8, the manufacturer-autho-
rized compressor oil for the HFC-134a system.
•Do not mix multiple compressor oils.
If CFC-12 compressor oil is used in the HFC-134a
A/C system, the compressor may become stuck
due to poor lubrication, or the refrigerant may leak
due to swelling of rubber parts.
On the other hand, if HFC-134a compressor oil is
used in a CFC-12 A/C system, the durability of the
A/C system will be lowered.
•HFC-134a compressor oil is very hygroscopic.
When replacing or installing/removing A/C parts,
immediately isolate the oil from atmosphere using a
plug or tape. In order to avoid moisture, store the oil
in a container with its cap tightly closed.
3. REFRIGERANT
•CFC-12 refrigerant cannot be used in a HFC-
134a A/C system. HFC-134a refrigerant, also can-
not be used in a CFC-12 A/C system.
•If an incorrect or no refrigerant is used, it will re-
sult in poor lubrication and the compressor itself
may be damaged.
4. HANDLING OF REFRIGERANT
•The refrigerant boils at approx. –30°C (22°F).
When handling it, be sure to wear protective gog-
gles and protective gloves. Direct contact of the re-
frigerant with skin may cause frostbite.
If the refrigerant gets into your eye, avoid rubbing
your eyes with your hands. Wash your eye with
plenty of water, and receive medical treatment from
an eye doctor.
•Do not heat a service can. If a service can is di-
rectly heated, or put into boiling water, the inside
pressure will become extremely high. This may
cause the can to explode. If a service can must be
warmed up, use warm water of 40°C (104°F) or less.
•Do not drop or subject a service can to impacts.
(Observe the precautions and operation procedure
described on the refrigerant can.)
•When the engine is running, do not open the
high-pressure valve of the manifold gauge. High-
pressure gas can back-flow resulting in an explo-
sion of the can.
•Provide good ventilation and do not work in a
closed area.
•In order to prevent global warming, avoid releas-
ing HFC-134a into the atmosphere. Using a refrig-
erant recovery system, discharge and recycle the
gas.
AC-01380
(A) Goggles
(B) Gloves
(C) Avoid open flame
(D) No direct heat on container
(E) Do not discharge
(F) Loosen
(A)(B)
(C) (D)
(E)
(F)
AC-00007

AC-15
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
5. O-RING CONNECTIONS
•Always use a new O-ring.
•In order to keep the O-rings free of lint which can
cause a refrigerant gas leak, perform operations
without gloves and cloth.
•Apply compressor oil to O-rings to avoid sticking,
before installation.
•Use a torque wrench to tighten the O-ring fittings.
Over-tightening will cause damage to the O-ring
and cause tube end distortion.
•If the work is interrupted before completing pipe
connections, recap the tubes, components and fit-
tings with a plug or tape to prevent foreign matter
from entering.
•Visually check the surfaces and mating surfaces
of O-rings, threads and connecting points. If a fail-
ure is found, replace the applicable parts.
•Install the O-rings at a right angle to tube beads.
•Use compressor oil specified in the service man-
ual to lubricate the O-rings.
Apply oil to the top and sides of O-rings before in-
stallation.
Apply compressor oil to grooves of the tube.
•After tightening, use a clean cloth to remove ex-
cess compressor oil from the connections and any
oil which may have run on the vehicle body or other
parts.
•If any leakage is suspected after tightening, do
not tighten the connections further, but disconnect
the connections, remove the O-rings, and check
the O-rings, threads, and connections.
D: PREPARATION TOOL
CAUTION:
When working on vehicles with a HFC-134a
system, only use HFC-134a specified tools and
parts. Do not mix CFC-12 tools and parts. If
HFC-134a and CFC-12 refrigerant or compres-
sor oil is mixed, it will result in poor lubrication
and the compressor itself may be damaged.
In order to prevent the mixture of HFC-134a and
CFC-12 parts and liquid, the tool and screw
type and the type of service valves used are dif-
ferent. The gas leak detectors for the HFC-134a
and CFC-12 systems must also not be inter-
changed.
(A) Seal
(A) O-ring
(B) OK
(C) NG
(D) Groove
(A)
AC-00008
AC-00009
(D)
(B)
(C)
(C)
(A)
HFC-134aCFC-12
To o l & s c r e w t y p e M i l l i m e t e r s i z e I n c h s i z e
Va l ve t y p e Q u i ck j o i n t t y p e S c r ew - i n t y p e
AC-00010

AC-16
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
1. SPECIAL TOOL
NOTE:
Read the instruction manual for the connector remover before using.
2. GENERAL TOOL
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
73499XA00A S/T REMOVER PD Used to disconnect the connector for a quick
joint type air conditioner piping (high pressure
side).
73499XA01A S/T REMOVER PS Used to disconnect the connector for a quick
joint type air conditioner piping (high pressure
side).
ILLUSTRATION Name and Function
WRENCH
Va r i o u s WRENCHES will be required to service any A/C system. A 7 to
40 N·m (0.7 to 4.1 kg-m, 5 to 30 ft-lb) torque wrench and various crow-
foot wrenches will be needed. Open end or flare nut wrenches will be
needed to hold the tube and hose fittings.
Applicator bottle
A small APPLICATOR BOTTLE i s r e c om me nd e d to a p pl y co mp r e ss or
oil to the various parts. It can be available at a hardware or drug store.
ST73499XA00A
ST73499XA01A
AC-00213
AC-00012