GMC S Series 1994, Руководство по ремонту

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1 - F R O N T H E A D S U R F A C E 3 - C L U T C H
C O IL
3 - S T A K E F R O N T H E A D H O U S IN G
0 .2 8 -0 .35m m DEEP (.010 .0 1 5 ” )
520021-1D 2
1 -P R E S S U R E R E L IE F V A L V E
2 -D IS C H A R G E P O R T
3 -S U C T IO N P O R T
4 - C O N T R O L S W ITC H E S
520017-1D3-R1
Fig. 19 Details of Stakes In Front Head for Clutch Coil Fig. 21 Compressor Rear View
9.
0
Remove or Disconnect
1. R ecover refrigerant.
2. L oosen and reposition com pressor in m ounting brackets.
3. R em ove clutch plate and hub assem bly from com pressor
as described in m inor repairs.
4. R em ove the shaft seal retainer ring, using snap ring
p liers J 5403 (Fig. 22).
5. T horoughly clean inside o f com pressor neck area
surrounding the shaft, the exposed p ortion o f the seal, the
sh a ft its e lf an d O -ring groove. A n y dirt or fo re ig n
m aterial getting into com pressor m ay cause dam age.
6. F ully engage the knurled tangs o f seal rem over-installer
J 2 3 1 2 8 -A into the recessed portion o f the seal by turning
the handle clockw ise. R em ove the seal from the
com pressor w ith a ro ta ry -p u llin g m otion (Fig. 24).
D iscard the seal. The handle should be h an d -tig h ten e d
securely. Do not use a w rench or pliers.
7. R em ove and discard the seal O -ring from the com pressor
neck using O -ring rem over J 9553-01 (Fig. 23).
8. T horoughly clean seal O -ring groove in front head.
b
Recheck the shaft and inside o f the com pressor neck for
dirt or foreign m aterial and be sure these areas are
perfectly clean before installing new parts.
Inspect
Seals should not be re-used. A lw ays use a new
specification service seal kit (Fig. 20). Be sure that the seal to
be installed is not scratched or dam aged in any way. M ake sure
that the seal is free o f lint and dirt that could dam age the seal
surface or prevent sealing.
2
.
5.
Install or Connect
Dip the new seal O -ring in clean 525 viscosity refrigerant
oil and assem ble onto O -ring installer
J 33011.
Insert the O -ring installer J 33011 into the com pressor
neck until the installer “bottom s.” L ow er the m oveable
slide o f the O -ring installer to release the O -ring into the
seal O -ring low er groove. (The com pressor neck top
groove is for the shaft seal retainer ring.) R otate the
installer to seat the O -ring and rem ove the installer.
Attach the seal to the seal rem over and installer
J 2 3 1 2 8 -A (Fig. 24) and dip the seal in clean 525
viscosity refrigerant oil to coat the seal. Install seal
protector J 34614 in the seal (Fig. 25), place over shaft
and push seal in place w ith a rotary m otion.
Install the new seal retainer ring w ith its flat side against
the seal, using snap-ring pliers J 5403 (Fig. 22). U se the
sleeve from O -ring installer J 33011 to press in on the
seal retainer ring so that it snaps into its groove.
To leak test, install com pressor leak test fixture
J 9 6 2 5 -A on rear head o f com pressor and connect gage
charging lines using J 3 8 1 0 0 -C R efrigerant R ecovery
System. Pressurize suction and high-side o f com pressor
with Refrigerant 12 vapor to drum pressure. Tem porarily
install the shaft nut and, w ith the com pressor in
horizontal position, rotate the com pressor shaft in
normal direction o f rotation several turns by hand. Leak
test the seal area and correct any leak found. R ecover
refrigerant. Rem ove shaft nut.