Jeep Cherokee 2000, Service Manual, Page: 1489 / 1528

to hold one side of the connection stationary, while
loosening or tightening the other side of the connec-
tion with a second wrench.
The refrigerant must be recovered completely from
the system before opening any fitting or connection.
Open the fittings with caution, even after the refrig-
erant has been recovered. If any pressure is noticed
as a fitting is loosened, tighten the fitting and
recover the refrigerant from the system again.
Do not discharge refrigerant into the atmosphere.
Use an R-134a refrigerant recovery/recycling device
that meets SAE Standard J2210.
The refrigerant system will remain chemically sta-
ble as long as pure, moisture-free R-134a refrigerant
and refrigerant oil is used. Dirt, moisture, or air can
upset this chemical stability. Operational troubles or
serious damage can occur if foreign material is
present in the refrigerant system.
When it is necessary to open the refrigerant sys-
tem, have everything needed to service the system
ready. The refrigerant system should not be left open
to the atmosphere any longer than necessary. Cap or
plug all lines and fittings as soon as they are opened
to prevent the entrance of dirt and moisture. All lines
and components in parts stock should be capped or
sealed until they are to be installed.
All tools, including the refrigerant recycling equip-
ment, the manifold gauge set, and test hoses should
be kept clean and dry. All tools and equipment must
be designed for R-134a refrigerant.
ACCUMULATOR
WARNING: REVIEW THE WARNINGS AND CAU-
TIONS IN THE FRONT OF THIS GROUP BEFORE
PERFORMING THE FOLLOWING OPERATION.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Recover the refrigerant from the refrigerant
system. See Refrigerant Recovery in this group for
the procedures.
(3) Unplug the wire harness connector from the
low pressure cycling clutch switch.
(4) Loosen the screw that secures the accumulator
retaining band to the support bracket on the dash
panel (Fig. 14).
(5) Disconnect the suction line from the accumula-
tor outlet tube refrigerant line fitting. See Refriger-
ant Line Coupler in this group for the procedures.
Install plugs in, or tape over all of the opened refrig-
erant line fittings.
(6) Disconnect the accumulator inlet tube refriger-
ant line fitting from the evaporator outlet tube. See
Refrigerant Line Coupler in this group for the proce-
dures. Install plugs in, or tape over all of the opened
refrigerant line fittings.
(7) Pull the accumulator and retaining band unit
forward until the screw in the band is clear of the
slotted hole in the support bracket on the dash panel.
(8) Remove the accumulator from the vehicle.
INSTALLATION
(1) Install the accumulator and retaining band as
a unit by sliding the screw in the band into the slot-
ted hole in the support bracket on the dash panel.
(2) Remove the tape or plugs from the refrigerant
line fittings on the accumulator inlet tube and the
evaporator outlet tube. Connect the accumulator inlet
tube refrigerant line coupler to the evaporator outlet
tube. See Refrigerant Line Coupler in this group for
the procedures.
(3) Tighten the accumulator retaining band screw
to 5 N·m (45 in. lbs.).
(4) Remove the tape or plugs from the refrigerant
line fittings on the suction line and the accumulator
outlet tube. Connect the suction line to the accumu-
Fig. 14 Accumulator Remove/Install
1 – LOW PRESSURE CYCLING CLUTCH SWITCH
2 – CLIP
3 – EVAPORATOR
4 – STUDS
5 – BRACKET
6 – NUTS
7 – BAND
8 – ACCUMULATOR
9 – SCREW
XJ
HEATING AND AIR CONDITIONING 24 - 25
REMOVAL AND INSTALLATION (Continued)