CHEVROLET PLYMOUTH ACCLAIM 1993 Service Manual

(3) Separate buckle/belt assembly from vehicle.
INBOARD BUCKLE/CENTER OCCUPANT BELT INSTALLATION
Reverse the preceding operation.
FRONT SEATS
REMOVAL (FIG. 28 OR 29)
(1) Position seat full forward. (2) Remove screws holding rear track riser covers
and separate covers from tracks. (3) On power seat track, remove outboard track
cover. (4) Remove inboard seat belt attaching bolt from
floor. (5) Remove nuts holding seat track to floor.
(6) Position seat full rearward.
(7) Remove door sill scuff plate and disconnect
power seat track wire connector. (8) Remove bolts holding seat track to cross mem-
ber. (9) Remove seat from vehicle.
INSTALLATION
Reverse the preceding operation.
REAR SEATS
REAR SEAT CUSHION REMOVAL
(1) Remove bolts holding cushion to floor.
(2) Disconnect center occupant seat belts from
cushion.
Fig. 26 Front Seat Belts
Fig. 27 Rear Seat Belts
Fig. 28 Manual Front SeatÐTypical
Fig. 29 Power Front SeatÐTypical
Ä AY-BODY 23 - 145

(3) Remove cushion from vehicle.
REAR SEAT CUSHION INSTALLATION
Reverse the preceding operation.
REAR SEAT BACK REMOVAL
(1) Remove rear seat cushion assembly.
(2) Remove bolts holding seat back to rear floor
kick-up. (3) Lift seat back upward to disengage upper hooks
from shelf support panel. (4) Separate seat back from vehicle.
REAR SEAT BACK INSTALLATION
Reverse the preceding operation.
BODY MOULDINGS
STICK-ON BODY SIDE MOULDING REMOVALAND INSTALLATION
(1) Warm the effected stick-on moulding and body
metal to approximately 38ÉC (100ÉF) using a suitable
heat lamp or heat gun. (2) Pull stick-on moulding from painted surface.
(3) Remove adhesive tape residue from painted
surface of vehicle. (4) If moulding is to be reused, Remove tape resi-
due from moulding. Clean back of moulding with Mo-
par, Super Kleen solvent or equivalent. Wipe
moulding dry with lint free cloth. Apply new body
side moulding (two sided adhesive) tape to back of
moulding. (5) Clean body surface with Mopar, Super Kleen
solvent or equivalent. Wipe surface dry with lint free
cloth. (6) Apply a length of masking tape on the body,
parallel to the top edge of the moulding to use as a
guide, if necessary. (7) Remove protective cover from tape on back of
moulding. Apply moulding to body below the mask-
ing tape guide. (8) Remove masking tape guide and heat body and
moulding, see step one. Firmly press moulding to
body surface to assure adhesion.
FRONT WHEEL OPENING MOULDING REMOVAL
(1) Remove screws holding wheel opening mould-
ing to front fender. (2) Separate moulding from fender.
FRONT WHEEL OPENING MOULDINGINSTALLATION
(1) Position moulding in wheel opening and start
top center screw of wheel opening moulding. (2) Install screws around wheel opening.
REAR WHEEL OPENING MOULDING REMOVAL
(1) Remove screws holding wheel opening mould-
ing to quarter panel. (2) Separate wheel opening moulding from quarter
panel.
REAR WHEEL OPENING MOULDING INSTALLATION
(1) Position moulding in wheel opening and start
top center screw of wheel opening moulding. (2) Install screws around wheel opening.
VINYL ROOF BONNET
REMOVAL (FIG. 30)
(1) Remove quarter panel trim covers.
(2) Remove head lining.
(3) Remove nuts holding transverse roof moulding
to roof panel and separate moulding from vehicle. (4) Remove nuts holding vinyl top bonnet to roof.
(5) Remove rear deck filler panel.
(6) Remove screws holding rear window opening
lower valance to body. (7) Disengage clips holding vinyl top bonnet to
quarter panel. (8) Pull vinyl top bonnet away from top panel to
separate bonnet from anti-flutter sealer holding bon-
net to roof.
INSTALLATION
(1) Clean anti-flutter sealer from roof surface and
inside of vinyl roof bonnet. (2) Apply a 20 mm (0.75 in.) bead of anti-flutter
sealer across the roof panel at the mid point between
the front of the bonnet and rear of roof. (3) Apply a 20 mm (0.75 in.) by 150 mm (6 in.)
bead of anti-flutter sealer down each roof side panel
at mid point between the door opening and rear of
roof. (4) Place the bonnet into position on the roof panel
and align to proper fit. (5) Reverse the removal operation.
REAR DECK FILLER PANEL
REMOVAL (FIG. 31)
(1) Raise truck lid to full up position.
(2) Remove screws holding rear deck filler panel to
body in the front trunk opening gutter. (3) Close trunk lid, do not latch.
(4) Lift filler panel upward and separate from ve-
hicle.
INSTALLATION
Reverse the preceding operation.
23 - 146 AY-BODY Ä

REAR WINDOW GLASS
REMOVAL (FIG. 32)
(1) Remove rear deck filler panel.
(2) Remove interior trim as necessary to gain ac-
cess to rear window defogger wire connector and
ground screw, if equipped. (3) Remove vinyl roof bonnet, if equipped.
WARNING: WEAR EYE AND HAND PROTECTION
WHEN HANDLING SAFETY GLASS. PERSONAL IN-
JURY CAN RESULT.
CAUTION: Do not damage body or trim finish when
cutting out glass or applying fence primer. (4) Cut the urethane around the perimeter of the
back window glass. Refer to Windshield section of
this group for proper procedures. (5) Separate the rear window from the vehicle.
INSTALLATION
(1) Prepare the work area, window fence, and glass
the same way as described in the Windshield section
of this group. (2) Place fence spacers at the locations shown (Fig.
32). (3) Apply a 10 mm (0.4 in.) bead of urethane
around the perimeter of the glass. (4) Install the glass in the same manner described
in the Windshield section of this group. (5) Install roof bonnet.
(6) Connect rear window defogger wiring. Install
interior trim and rear deck filler panel. (7) After urethane has cured, water test rear win-
dow to verify repair. Verify rear window defogger op-
eration, see Group 8N, Rear Window Defogger.
TRUNK LID
REMOVAL (FIG. 33)
(1) Raise trunk lid to full up position.
(2) Disconnect the trunk lamp wire connector.
(3) Mark all bolt and hinge attachment locations
with a grease pencil or other suitable device to pro-
vide reference marks for installation. When install-
ing trunk lid, align all marks and secure bolts. The
trunk lid should be aligned to 4 mm (0.160 in.) gap
to the quarter panels and flush across the top sur-
faces along quarter panels. (4) Remove the top trunk lid to hinge attaching
bolts and loosen the bottom bolts until they can be
removed by hand. (5) With assistance of a helper at the opposite side
of the vehicle to support the trunk lid, remove the
bottom trunk lid to hinge attaching bolts. Separate
the trunk lid from the vehicle.
INSTALLATION
Reverse the preceding operation.
TRUNK LID HINGE
REMOVAL
(1) Remove rear deck filler panel.
(2) Disconnect trunk lid lift torsion bars from
hinges. (3) Mark all attaching bolt, nut, and component lo-
cations with a suitable marking device. Use marks
as a reference when installing hinge. (4) Remove bolts holding trunk lid to hinge.
(5) Remove nuts and bolts holding hinge to closure
panel below rear window glass. (6) Separate hinge from vehicle.
Fig. 30 Vinyl Roof BonnetÐTypical
Fig. 31 Rear Deck Filler PanelÐTypical
Ä AY-BODY 23 - 147

INSTALLATION
Reverse the preceding operation.
TRUNK LID TORSION BAR
REMOVAL
(1) Raise and support trunk lid in the full up posi-
tion. (2) Remove trunk lining as necessary to gain ac-
cess to torsion bars. (3) Disengage adjusting end torsion bar from the
slot in the tension adjustment bracket. (4) Pivot torsion bar out of lift arm swivel.
(5) Disconnect torsion bar from hinge.
INSTALLATION
Reverse the preceding operation.
Fig. 32 Rear Window GlassÐTypical
Fig. 33 Trunk Lid
23 - 148 AY-BODY Ä

HEATING AND AIR CONDITIONING
CONTENTS
page page
AUTOMATIC TEMPERATURE CONTROL (ATC) .............................. 66
COMPONENT SERVICE PROCEDURES ...... 47
FIXED DISPLACEMENT COMPRESSORÐ MODEL 10PA17 ...................... 24
FIXED DISPLACEMENT COMPRESSORÐ MODEL SD709P ...................... 38 FIXED DISPLACEMENT COMPRESSORÐ
MODEL TR105 ....................... 32
GENERAL INFORMATION .................. 1
HEATER AND A/C PERFORMANCE TESTS .... 6
REFRIGERANT SERVICE PROCEDURES ...... 8
VACUUM CONTROL SYSTEM DIAGNOSIS .... 4
VARIABLE DISPLACEMENT COMPRESSORÐ MODEL 6C17 ......................... 13
GENERAL INFORMATION INDEX
page page
A/C System Identification ................... 1
Cooling System Precautions ................. 3
Description and Operation ................... 1
Engine Cooling System Requirements .......... 2 Handling Tubing and Fittings
................. 3
Safety Precautions and Warnings ............. 3
Side Window Demisters .................... 2
System Airflow ........................... 1
A/C SYSTEM IDENTIFICATION
The terms Fixed Displacement Compressor and
Variable Displacement Compressor will be used to
describe the two types of A/C systems used through-
out this Group. Refer to (Figs. 1, 2, 3 and 4). The Variable Displacement Compressor can be
identified by the location of the high pressure line. It
is mounted to the end of the compressor case (Fig. 4).
DESCRIPTION AND OPERATION
Both the heater and the heater/air conditioning
systems share many of the same functioning compo-
nents. This Group will deal with both systems to-
gether when component function is common, and
separately when they are not. For proper operation of the instrument panel con-
trols, refer to the Owner's Manual provided with the
vehicle. All vehicles are equipped with a common A/C-heat-
er unit housing assembly. On heater only systems,
the evaporator and recirculating air door are omitted
(Fig. 5).
SYSTEM AIRFLOW
The system pulls outside (ambient) air through the
cowl opening at the base of the windshield. Then it
goes into the plenum chamber above the A/C-heater unit housing. On air conditioned vehicles, the air
passes through the evaporator. Air flow can be di-
rected either through or around the heater core. This
Fig. 1 Fixed Displacement CompressorÐModel 10PA17
Ä HEATING AND AIR CONDITIONING 24 - 1

is done by adjusting the blend-air door with the
TEMP control on the instrument panel. The air flow
can then be directed from the PANEL, BI-LEVEL
(panel and floor), and FLOOR-DEFROST outlets. Air
flow velocity can be adjusted with the blower speed
selector switch on the instrument panel (Fig. 6). On air conditioned vehicles, ambient air intake can
be shut off by closing the recirculating air door. This
will recirculate the air that is already inside the ve-
hicle. This is done by moving the TEMP control into
the RECIRC position. Depressing the DEFROST or
A/C button will engage the compressor. This will send refrigerant through the evaporator, and will re-
move heat and humidity from the air before it is di-
rected through or around the heater core.
SIDE WINDOW DEMISTERS
The side window demisters direct air from the
heater assembly. The outlets are located on the top
outboard corners of the instrument panel. The De-
misters operate when the A/C control mode selector
is on FLOOR or DEFROST setting.
ENGINE COOLING SYSTEM REQUIREMENTS
To maintain the performance level of the heating/
air conditioning system, the engine cooling system
must be prepared as shown in this manual. The use of a bug screen is not recommended. Any
obstructions in front of the radiator or condenser can
reduce the performance of the A/C or engine cooling
system.
Fig. 2 Fixed Displacement CompressorÐModel TR105
Fig. 3 Fixed Displacement CompressorÐModelSD709P
Fig. 4 Variable Displacement CompressorÐModel 6C17
Fig. 5 Common Blend-Air Heater A/C System
24 - 2 HEATING AND AIR CONDITIONING Ä

SAFETY PRECAUTIONS AND WARNINGS
WARNING: WEAR EYE PROTECTION WHEN SER-
VICING THE AIR CONDITIONING REFRIGERANT
SYSTEM. SERIOUS EYE INJURY CAN RESULT
FROM EYE CONTACT WITH REFRIGERANT. IF EYE
CONTACT IS MADE, SEEK MEDICAL ATTENTION
IMMEDIATELY. DO NOT EXPOSE REFRIGERANT TO OPEN
FLAME. POISONOUS GAS IS CREATED WHEN RE-
FRIGERANT IS BURNED. AN ELECTRONIC TYPE
LEAK DETECTOR IS RECOMMENDED. LARGE AMOUNTS OF REFRIGERANT RELEASED
IN A CLOSED WORK AREA WILL DISPLACE THE
OXYGEN AND CAUSE SUFFOCATION. THE EVAPORATION RATE OF (R-12) REFRIGER-
ANT AT AVERAGE TEMPERATURE AND ALTITUDE
IS EXTREMELY HIGH. AS A RESULT, ANYTHING
THAT COMES IN CONTACT WITH THE REFRIGER-
ANT WILL FREEZE. ALWAYS PROTECT SKIN OR
DELICATE OBJECTS FROM DIRECT CONTACT
WITH REFRIGERANT.
CAUTION: Liquid refrigerant is corrosive to metal
surfaces. Follow the operating instructions supplied
with equipment being used.
COOLING SYSTEM PRECAUTIONS
WARNING: ANTIFREEZE IS AN ETHYLENE GLYCOL
BASE COOLANT AND IS HARMFUL IF SWAL-
LOWED OR INHALED. IF SWALLOWED, DRINK
TWO GLASSES OF WATER AND INDUCE VOMIT-
ING. IF INHALED, MOVE TO FRESH AIR AREA.
SEEK MEDICAL ATTENTION IMMEDIATELY. DO NOT STORE IN OPEN OR UNMARKED CON-
TAINERS. WASH SKIN AND CLOTHING THOROUGHLY AF-
TER COMING IN CONTACT WITH ETHYLENE GLY-
COL. KEEP OUT OF REACH OF CHILDREN AND PETS.
DO NOT OPEN A COOLING SYSTEM WHEN THE
ENGINE IS AT RUNNING TEMPERATURE. PER-
SONAL INJURY CAN RESULT.
The engine cooling system is designed to develop
internal pressure of 97 to 123 kPa (14 to 18 psi). Al-
low the vehicle 15 minutes (or until a safe tempera-
ture and pressure are attained) before opening the
cooling system. Refer to Group 7, Cooling System.
HANDLING TUBING AND FITTINGS
Kinks in the refrigerant tubing or sharp bends in
the refrigerant hose lines will greatly reduce the ca-
pacity of the entire system. High pressures are pro-
duced in the system when it is operating. Extreme
care must be exercised to make sure that all connec-
tions are pressure tight. Dirt and moisture can enter
the system when it is opened for repair or replace-
ment of lines or components. The refrigerant oil will
absorb moisture readily out of the air. This moisture
will convert into acids within a closed system. The following precautions must be observed:
The system must be completely empty before open-
ing any fitting or connection in the refrigeration sys-
tem. Open fittings with caution even after the
system has been emptied. If any pressure is noticed
as a fitting is loosened, allow trapped pressure to
bleed off very slowly. A good rule for the flexible hose lines is to keep the
radius of all bends at least 10 times the diameter of
the hose. Sharper bends will reduce the flow of re-
frigerant. The flexible hose lines should be routed so
they are at least 3 inches (80 mm) from the exhaust
manifold. Inspect all flexible hose lines to make sure
they are in good condition and properly routed. Unified plumbing connections with aluminum gas-
kets cannot be serviced with O-rings. These gaskets
are not reusable and do not require lubrication be-
fore installing. The use of correct wrenches when making connec-
tions is very important. Improper wrenches or im-
proper use of wrenches can damage the fittings. The A/C system will remain chemical stabile as
long as pure-moisture-free R-12 and refrigerant oil is
used. Abnormal amounts of dirt, moisture or air can
upset the chemical stability. This condition could
cause operational troubles or even serious damage if
present in more than very small quantities. When it is necessary to open the refrigeration sys-
tem, have everything needed to service the system
ready. The system should not be left open any longer
than necessary. Cap or plug all lines and fittings as
soon as they are opened to prevent the entrance or
dirt and moisture. All lines and components in parts
stock should be capped or sealed until they are ready
to be used. All tools, including the refrigerant dispensing man-
ifold, the manifold gauge set, and test hoses should
be kept clean and dry.
Fig. 6 Heater only or HeaterÐA/C Controls
Ä HEATING AND AIR CONDITIONING 24 - 3

VACUUM CONTROL SYSTEM DIAGNOSIS
GENERAL INFORMATION
Use an adjustable Vacuum Test Gauge (C-3707)
and a suitable vacuum pump to test heater A/C con-
trol vacuum. With a finger placed over the end of
test hose (Fig. 1), calibrate vacuum control valve on
the test gauge to obtain -27 kPa (8 in. Hg.). Release
and block the end of the test hose several times to
verify vacuum setting.
VACUUM TESTING THE ONE-WAY CHECK VALVE
(1) In the engine compartment, disconnect the
Heater-A/C vacuum supply (black) hose. This hose
passes through an opening in the dash panel used for
the air conditioning expansion valve. (2) Remove the vacuum check valve. This valve is
located on the (black) vacuum supply hose at the
brake power booster. (3) Connect test vacuum supply hose to the heater
side of the valve. In this direction the gauge should
return to calibrated setting. If valve leaks vacuum in
this direction, valve replacement is necessary. (4) Connect test vacuum supply hose to the engine
vacuum side of the valve. Vacuum should flow
through valve.
VACUUM TESTING THE HEATER-A/C CONTROLS
(1) Connect the test vacuum prod to the vehicles
(black) vacuum supply hose. Position vacuum test
gauge so it can be viewed from the passenger com-
partment. (2) Position the heater A/C control mode selector to
DEFROST, FLOOR, BI-LEVEL, PANEL, and RE-
CIRC (with A/C). Pause after each selection. The test
gauge should return to the calibrated setting of -27
kPa (8 in. Hg.) after each selection is made. If the
gauge cannot achieve the calibrated setting, a vac-
uum circuit or component has a leak.
LOCATING VACUUM LEAKS
To locate a vacuum leak, disconnect 7-way vacuum
connector behind the instrument panel at the heater
A/C control. For removal and installation of heater
A/C control panel, refer to the Switch and Panel
Component Service section of Group 8E, Instrument
Panel. Connect the calibrated vacuum hose prod (Fig.
4) to each port in the vacuum harness connector (Fig.
2). The brown, bi-level, vacuum circuit has a metal
fiber restrictive device located in the line. More reac-
tion time is required for the test gauge to return to
calibrated setting. After each connection is made, the
test gauge should return to calibrated setting. If all
circuits function properly, replace control mode vac-
uum switch. If not, determine the color of the vac-
uum circuit that is leaking. To determine vacuum
line colors, refer to the Vacuum Circuits-Heater or
Heater A/C Control chart in this section. Disconnect
the vacuum actuator at the other end of the circuit.
(Instrument panel removal may be necessary to gain
access to some components). Block the end of the dis-
connected vacuum line. The test gauge should return
to calibrated setting. If not, that circuit has a leak
and must be repaired or replaced. If test gauge re-
turns to calibrated setting, the vacuum actuator
must be replaced.
Fig. 1 Adjust Vacuum Test Bleed Valve
Fig. 2 Vacuum Circuit Test
24 - 4 HEATING AND AIR CONDITIONING Ä

VACUUM CIRCUITSÐHEATER OR HEATER A/C CONTROL
Ä HEATING AND AIR CONDITIONING 24 - 5

HEATER AND A/C PERFORMANCE TESTS
HEATER OUTPUT TEST
PRE-DIAGNOSTIC PREPARATIONS
Review Safety Precautions and Warnings before
performing the following procedures. Check the radiator coolant level, drive belt tension,
and engine vacuum line connections. Also check ra-
diator air flow and radiator fan operation. Start en-
gine and allow to warm up to normal operating
temperature.
WARNING: DO NOT REMOVE RADIATOR CAP
WHEN ENGINE IS HOT, PERSONAL INJURY CAN
RESULT.
If vehicle has been run recently, wait 15 minutes
before removing cap. Place a rag over the cap and
turn it to the first safety stop. Allow pressure to es-
cape through the overflow tube. When the system
stabilizes, remove the cap completely.
MAXIMUM HEATER OUTPUT: TEST AND ACTION
Engine coolant is provided to the heater system by
two 16 mm (5/8 inch inside diameter) heater hoses.
With engine idling at normal running temperature,
set the control to maximum heat, floor, and high
blower setting. Using a test thermometer, check the
air temperature coming from the floor outlets, refer
to Temperature Reference chart.
If the floor outlet air temperature is low, refer to
Group 7, Cooling System for coolant temperature
specifications. Both heater hoses should be HOT to
the touch. The coolant return hose should be slightly
cooler than the supply hose. If coolant return hose is
much cooler than the supply hose, locate and repair
engine coolant flow obstruction in heater system.
POSSIBLE LOCATIONS OR CAUSE OF OBSTRUCTED
COOLANT FLOW
(a) Pinched or kinked heater hoses.
(b) Improper heater hose routing. (c) Plugged heater hoses or supply and return
ports at cooling system connections, refer to Group
7, Cooling System. (d) Plugged heater core.
If proper coolant flow through heater system is ver-
ified and outlet air temperature is still low, a me-
chanical problem may exist.
POSSIBLE LOCATION OR CAUSE OF INSUFFICIENT HEAT
(a) Obstructed cowl air intake.
(b) Obstructed heater system outlets.
(c) Blend-air door not functioning properly.
TEMPERATURE CONTROL If temperature cannot be adjusted with the TEMP
lever on the control panel, or TEMP lever is difficult
to move, the following could require service: (a) Blend-air door binding.
(b) Control cables miss-routed, pinched, kinked,
or disconnected. (c) Improper engine coolant temperature.A/C PERFORMANCE TEST
The air conditioning system is designed to remove
heat and humidity from the air entering the passen-
ger compartment. The evaporator, located in the
heater A/C unit behind the instrument panel, is
cooled to temperatures near the freezing point. As
warm damp air passes over the fins in the evapora-
tor, moisture in the air condenses to water, dehumid-
ifying the air. Condensation on the evaporator fins
reduces the evaporators ability to absorb heat. Dur-
ing periods of high heat and humidity an A/C system
will be less effective than during periods of high heat
and low humidity. With the instrument control set to
RECIRC, only air from the passenger compartment
passes through the evaporator. As the passenger
compartment air dehumidifies, A/C performance lev-
els rise.
PERFORMANCE TEST PROCEDURE
Review Safety Precautions and Warnings before
proceeding with this procedure. Air temperature in
test room and on vehicle must be 70ÉF (21ÉC) mini-
mum for this test. (1) Connect a tachometer and manifold gauge set.
(2) Set control to A/C, RECIRC, PANEL, or MAX
A/C, temperature lever on full cool and blower on
high. (3) Start engine and hold at 1000 rpm with A/C
clutch engaged. (4) Engine should be warmed up with doors and
windows closed.
TEMPERATURE REFERENCE CHART
24 - 6 HEATING AND AIR CONDITIONING Ä