Head, Valve Plate And Gasket Replacement; Bottom Plate Gasket Replacement - Jeep 1979 CJ-5 Technical & Service Manual

3E-14 AIR CONDITIONING
(7) Install four back plate attaching screws and
tighten in a diagonal pattern to 13 foot-pounds (18 N*m)
torque using Torx Bit Tool J-25359-02.
(8) Install and purge compressor of air.
(9) Leak test system. Evacuate and charge if
necessary.
Heal Valve Plato, and Gasket Replacement
(1) Isolate compressor.
(2) Remove service valves from compressor. Com-
pressor head service valve ports are identified as D for
discharge and S for suction.
(3) Remove compressor head attaching screws.
(4) Tap under valve plate ears (short, half-round
projections on valve plate) to remove head and valve
plate.
(5) Tap valve plate ears while holding the com-
pressor head to separate head from valve plate.
(6) Clean all gasket material from head, valve plate,
and compressor using care not to scratch or nick sealing
surfaces. *
(7) Coat all machined sealing surfaces with a light
film of refrigeration oil.
(8) Install new valve plate cylinder gasket on com-
pressor body, locating gasket on dowel pins.
(9) Install valve plate on compressor, locating it on
dowel pins so that discharge valve is at top. Figure 3E-13
illustrates correct assembly sequence.
(10) Install new head gasket, locating it on dowel
pins.
(11) Install head. Tighten compressor head cap-
screws to 15 foot-pounds (20 N*m) torque, following
sequence outlined in figure 3E-14.
(12) Coat service valve ports with a light film of
refrigeration oil and install new service valve O-rings or
gaskets, as required.
(13) Install service valves and tighten to 25 foot-
pounds (4 N«m) torque for O-ring type valve or 15 foot-
pounds (20 N*m) torque for attaching screws of flange
type valve.
(14) Purge compressor of air.
(15) Leak test system. Evacuate and charge if
necessary.
Bottom Plate Gasket lipiiceiiif
(1) Isolate and remove compressor.
(2) Remove bottom plate attaching screws and care-
fully remove bottom plate.
(3) Clean all gasket material from bottom plate and
compressor using care not to scratch or nick sealing
surfaces.
(4) Coat all sealing surfaces with a light film of
refrigeration oil.
Fig. 3E-13 Head and Valve Plate Assembly Sequence
(5) Install a replacement bottom plate gasket and
install bottom plate. Tighten bottom plate attaching
screws to 15 foot-pound (20 N*m) torque.
(6) Install and purge compressor of air.
(7) Leak test system. Evacuate and charge if
necessary.