1988 JEEP CHEROKEE battery replacement

Discharge system (slowly to prevent loss of compressor oil)
using approved refrigerant recovery/recycling equipment. Disconnect
evaporator and condenser lines from receiver-drier. Detach mounting
screws from receiver-drier bracket. Remove receiver-drier.
Installation
To install, reverse removal procedure. Evacuate, leak test,
recharge. Check A/C system for proper operation.
Fig. 1: Exploded View of Wrangler Evaporator Housing
Courtesy of Chrysler Motors.
EVAPORATOR-BLOWER HOUSING &
HEATER & EVAPORATOR CORES
NOTE: The following procedures are for vehicles with A/C-heater
systems only. For replacement of heater cores on vehicles
with heater systems only, see HEATER SYSTEMS, JEEP article.
Removal (Cherokee, Comanche & Wagoneer)
1) Disconnect battery ground. Discharge A/C system using
approved refrigerant recovery/recycling equipment. Disconnect A/C
hoses from expansion valve. Drain cooling system. Disconnect heater
hoses at core tubes. Disconnect blower motor wires and vent tube.
2) Remove console (if equipped). Remove lower instrument
panel. Disconnect electrical connectors at A/C relay, blower motor
resistors and A/C thermostat. Disconnect vacuum hose at vacuum motor.
Cut plastic retaining strap holding evaporator-blower housing to
heater core housing.
3) Disconnect blend-air heater control cable. Detach clip at
rear of blower housing flange and remove retaining screws. Remove

panel to gain access to blower motor mounting screws.
2) Remove screws attaching evaporator housing to instrument
panel and mounting bracket. Lower evaporator housing and pull hoses
and grommet through opening.
Installation
To install, reverse removal procedure. Evacuate, leak test,
recharge and check A/C system for proper operation.
EXPANSION VALVE
Removal (Cherokee, Comanche & Wagoneer)
Discharge A/C system using approved refrigerant
recovery/recycling equipment. Disconnect A/C hoses from expansion
valve. Disconnect expansion valve from evaporator core inlet and
outlet tubes. Remove expansion valve.
Installation
To install, reverse removal procedure. Evacuate, leak test,
recharge and check A/C system operation.
NOTE: The expansion valve is pre-set and should not be adjusted. A
faulty valve requires replacement.
Removal (Wrangler)
1) Discharge system using approved refrigerant
recovery/recycling equipment. Remove evaporator housing. Remove
insulation wrapped around suction line and expansion valve.
2) Mark capillary tube location on suction line. Disconnect
inlet and outlet connections, capillary tube clamp and equalizer tube.
Remove expansion valve.
Installation
1) Clean suction line to provide positive contact with
replacement expansion valve capillary tube. Connect inlet and outlet
hoses. Clamp capillary tube securely at marked position and connect
equalizer tube.
2) Wrap expansion valve and line with insulation. Install
evaporator housing assembly. Evacuate, leak test, recharge and check
A/C system operation.
TEMPERATURE CONTROL THERMOSTAT
Removal (Cherokee, Comanche & Wagoneer)
1) Disconnect battery ground. Remove console (if equipped).
Remove lower instrument panel. Disconnect electrical connection at
thermostat. See Fig. 3.
2) Remove capillary tube retaining screw. Remove thermostat
retaining screws. Remove capillary tube from tube guide hole.
Installation
1) To install, feed capillary tube through tube guide hole
until Red tape on capillary tube just enters hole in housing. Install
capillary tube retaining screw and clip.
2) Install thermostat retaining screws and attach electrical
connection. To complete installation, reverse removal procedure.
CAUTION: Handle capillary tube with care to avoid bends or kinks
which could cause thermostat to malfunction.
Removal (Wrangler)
Remove evaporator housing assembly. Remove lower cover.

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AMPLIFIERS
See
RECEIVERS, AMPLIFIERS, EQUALIZERS AND SUB-WOOFER VOLUME CONTROLS .
ANTENNAS
ANTENNA INSPECTION








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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Broken .................. A ............ Require replacement.
Bent .................... 2 .. Suggest repair or replacement.
Binding ................. 2 .. Suggest repair or replacement.
Connector broken ........ A .. Require repair or replacement.
Connector melted ........ A ........... ( 1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Inoperative ............. A ........ ( 2) Require replacement.
Insulation damaged,
conductors exposed ..... A .. Require repair or replacement.
Insulation damaged,
conductors not exposed . 1 ............ Suggest replacement.
Missing ................. C ............ Require replacement.
Motor runs continuously . A ......... Require or replacement.
Power antenna noisy ..... 2 .. Suggest repair or replacement.
Sticking ................ 2 .. Suggest repair or replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned, affecting
performance ............ A ........... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
( 1) - Determine cause and correct prior to repair or
replacement of part.
( 2) - Inoperative includes intermittent operation or out of
specification.









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BATTERIES
Proper operation of any electrical system or component can be
affected by battery condition. The battery(ies) must meet or exceed

minimum specification for vehicle as equipped and test to that
specific battery's CCA.
Definition of Terms
* Battery Performance Testing
Testing that determines whether or not a battery meets both
vehicle OEM and battery manufacturer's specifications.
* Cold Cranking Amp (CCA) Rating
The number of amperes a new, fully charged battery at
0
 F (-17.8 C) can deliver for 30 seconds and maintain at
least a voltage of 1.2 volts per cell (7.2 volts for a
12-volt battery).
* Cranking Amps (CA)
The number of amperes a new, fully charged battery, typically
at 32
 F (0 C) can deliver for 30 seconds and maintain at
least a voltage of 1.2 volts per cell (7.2 volts for a
12-volt battery).
* OEM Cranking Amps
The minimum CCA required by the original vehicle manufacturer
for a specific vehicle.
BATTERY INSPECTION









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Condition Code Procedure
Battery frozen .......... .. ......... ( 1) Further inspection
required.
Case leaking ............ A ............ Require replacement.
Casing swollen .......... A .......... ( 2) Further inspection
required.
Circuit open internally . A ............ Require replacement.
Electrolyte
contamination .......... A ........... ( 2) Further inspection
required.
Electrolyte
discoloration .......... A .......... ( 2) Further inspection
required.
Fails to accept and hold
charge ................. A ........ ( 3) Require replacement.
Fluid level low ......... B .......... ( 4) Further inspection
required.
Out of performance
specification for
battery ................ B ........ ( 5) Require replacement.
Out of specification for
application ............ B ........ ( 5) Require replacement.
Post (top or side) burned,
affecting performance .. A ........... ( 6) Require repair or
replacement.
Post (top or side) burned,
not affecting
performance ............ 2 ........... ( 6) Suggest repair or
replacement.
Post (top or side)
corroded, affecting
performance ............ A ................. Require repair.
Post (top or side)
corroded, not affecting
performance ............ 2 ................. Suggest repair.

Post (top or side)
loose .................. A ............ Require replacement.
Post (top or side) melted,
affecting performance .. A ........... (6) Require repair or
replacement.
Post (top or side) melted,
not affecting
performance ............ 2 ........... ( 6) Suggest repair or
replacement.
Specific gravity low .... B .......... ( 7) Further inspection
required.
State of charge low ..... A .......... ( 7) Further inspection
required.
Top dirty ............... 2 ....... Suggest cleaning battery.
Top wet ................. A ... ( 8) Require cleaning battery.
Further inspection required.
Vent cap loose .......... A ... Require repair or replacement
of vent cap.
Vent cap missing ........ C .......... Require replacement of
vent cap.
( 1) - DO NOT attempt to charge a frozen battery. Allow battery
to warm thoroughly and then performance-test. If battery
fails performance test, require replacement.
( 2) - No service suggested or required unless the battery fails
performance test, in which case, require replacement.
( 3) - This phrase refers to a battery that fails to either
accept and/or retain a charge using appropriate times
listed in the Battery Charging Guide of the BCI Service
Manual, battery charger operating manual, or battery
manufacturer's specifications.
( 4) - Determine cause of low fluid level. Refill to proper
level(s) with water (distilled water preferred). Recharge
battery and performance-test. If battery does not meet
specifications, require replacement. If battery is sealed
type (non-removable filler caps), require replacement.
( 5) - The battery may meet battery manufacturer's specifications
but test below the minimum specification defined by the
vehicle's OEM for that vehicle.
( 6) - Determine cause and correct prior to repair or replacement
of part.
( 7) - Recharge and test to manufacturer's specifications. If
battery fails performance test, require replacement.
( 8) - Check fluid level and adjust to manufacturer's
specification. Suggest checking charging system for
proper operation.









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BATTERY CABLES
See BATTERY CABLES, WIRES AND CONNECTORS .
BATTERY CABLES, WIRES AND CONNECTORS
BATTERY CABLE, WIRE AND CONNECTOR INSPECTION








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Condition Code Procedure
Application incorrect ... B .. Require repair or replacement.
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware

missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Connector broken ........ A .. Require repair or replacement.
Connector melted ........ A ........... (1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Insulation damaged,
conductors exposed ..... A ........... ( 2) Require repair or
replacement.
Insulation damaged,
conductors not exposed . 1 ............ Suggest replacement.
Open .................... A .. Require repair or replacement.
Protective shield
(conduit) melted ....... 2 ........... ( 1) Suggest repair or
replacement.
Protective shield
(conduit) missing ...... 2 .. Suggest repair or replacement.
Resistance (voltage drop)
out of specification ... A .. Require repair or replacement.
Routed incorrectly ...... B ................. Require repair.
Secured incorrectly ..... B ................. Require repair.
Shorted ................. A .. Require repair or replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned, affecting
performance ............ A ........... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
Voltage drop out of
specification .......... A .. Require repair or replacement.
( 1) - Determine cause and correct prior to repair or
replacement of part.
( 2) - Exposed conductor at replacement (aftermarket) terminal
end does not require repair or replacement.









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BATTERY HOLD DOWN HARDWARE
See BATTERY TRAYS AND HOLD DOWN HARDWARE .
BATTERY TRAYS AND HOLD DOWN HARDWARE
BATTERY TRAY AND HOLD DOWN HARDWARE INSPECTION








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Condition Code Procedure
Battery improperly
secured ................ 2 ................. Suggest repair.
Bent, affecting
performance ............ A .. Require repair or replacement.
Bent, not affecting

performance ............ .. ........ No service suggested or
required.
Broken, affecting
performance ............ A .. Require repair or replacement.
Broken, not affecting
performance ............ .. ........ No service suggested or
required.
Corroded, affecting
performance ............ A .. Require repair or replacement.
Corroded, not affecting
performance ............ 2 .. Suggest repair or replacement.
Cracked, affecting
performance ............ A .. Require repair or replacement.
Cracked, not affecting
performance ............ 1 .. Suggest repair or replacement.
Missing ................. C ............ Require replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
missing) ............... A ............ Require replacement.
Water drain clogged ..... A ................. Require repair.









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BATTERY WIRES
See BATTERY CABLES, WIRES AND CONNECTORS .
BELTS
BELT INSPECTION








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Condition Code Procedure
Alignment incorrect ..... B .......... ( 1) Further inspection
required.
Cracked ................. 1 ............ Suggest replacement.
Frayed .................. 1 ............ Suggest replacement.
Missing ................. C ............ Require replacement.
Noisy ................... 2 .......... ( 2) Further inspection
required.
Plies separated ......... A ............ Require replacement.
Tension out of
specification .......... B ........... Require adjustment or
replacement.
Worn beyond adjustment
range .................. B ............ Require replacement.
Worn so it contacts bottom
of pulley .............. A ............ Require replacement.
( 1) - Determine cause of incorrect alignment and require repair.
( 2) - Determine cause of noise and suggest repair.









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BULB SOCKETS
BULB SOCKET INSPECTION








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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of

replacement of part.
(2) - Determine source of contamination, such as engine coolant,
fuel, metal particles, or water. Require repair or
replacement.
( 3) - Inoperative includes intermittent operation or out of
OEM specification. Some components may be serviceable;
check for accepted cleaning procedure.









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BATTERIES
Proper operation of any electrical system or component can be
affected by battery condition. The battery(ies) must meet or exceed
minimum specification for vehicle as equipped and test to that
specific battery's CCA.
Definition of Terms
* Battery Performance Testing
Testing that determines whether or not a battery meets both
vehicle OEM and battery manufacturer's specifications.
* Cold Cranking Amp (CCA) Rating
The number of amperes a new, fully charged battery at
0
 F (-17.8 C) can deliver for 30 seconds and maintain at
least a voltage of 1.2 volts per cell (7.2 volts for a
12-volt battery).
* Cranking Amps (CA)
The number of amperes a new, fully charged battery, typically
at 32
 F (0 C) can deliver for 30 seconds and maintain at
least a voltage of 1.2 volts per cell (7.2 volts for a
12-volt battery).
* OEM Cranking Amps
The minimum CCA required by the original vehicle manufacturer
for a specific vehicle.
BATTERY INSPECTION









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Condition Code Procedure
Battery frozen .......... .. ......... ( 1) Further inspection
required.
Case leaking ............ A ............ Require replacement.
Casing swollen .......... A .......... ( 2) Further inspection
required.
Circuit open internally . A ............ Require replacement.
Electrolyte
contamination .......... A .......... ( 2) Further inspection
required.
Electrolyte
discoloration .......... A .......... ( 2) Further inspection
required.
Fails to accept and
hold charge ............ A ........ ( 3) Require replacement.
Fluid level low ......... B .......... ( 4) Further inspection
required.
Out of performance
specification
for battery ............ B ........ ( 5) Require replacement.
Out of specification for
application ............ B ........ ( 5) Require replacement.