Chevrolet 1977 10 Series, Руководство по ремонту, Страница: 21 / 468

AIR CONDITIONING 1B-15
SHOE DISC THRUST BEARING RACE
PART NO. IDENTIFICATION M IN.FEELER PART NO. IDENTIFICATION DIAL INDICATOR
ENDING IN
STAMP GAGE READING ENDING IN STAMP READING
000 0
.0000 000 0 .0000
175
17-1/2 .0175 050 5
.0050
180 18
.0180 055 5-1/2
.0055
185
18-1/2 .0185
060 6 .0060
190
19 .0190
065 6-1/2 .0065
195
19-1/2 .0195 070 7
.0070
200 20
.0200 075 7-1/2 .0075
205
20-1/2 .0205 080 8
.0080
210 21
.0210 085
8-1/2 .0085
215
21-1/2 .0215
090 9 .0090
220
22 .0220 095 9-1/2
.0095
100 10
.0100
105 10-1/2 .0105
110 11
.0110
115 11-1/2
.0115
120 12 .0120
Fig. 4 1--Available A-6 Ser vice Shoes and T h r u s t Races
22. Remove nuts from top plate of Compressing
Fixture J-9397, and remove top plate.
23. Separate cylinder halves while unit is in Fixture.
It may be necessary to use a wood block and mallet.
24.
Remove rear cylinder half and carefully
remove one piston at a time from axial plate and
front cylinder half. DO NOT LOSE THE
RELATIONSHIP of the front ball and shoe disc
and rear ball. Transfer each piston, ball, and shoe
disc to its proper place in Parts Tray J-9402.
25. Remove rear outer ZERO thrust race from
shaft and install thrust race just selected.
The ZER O thrust race may be put aside for re-use in
additional gaging or rebuilding operations.
A-6 Teflon Piston Ring Replacement
The Teflon piston ring installing, sizing and gaging
tools are shown in Fig. 95.
1. Remove the old piston rings by C A R E FU L L Y
slicing through the ring with a knife or sharp instrum ent,
holding the blade almost flat with the piston surface. Be
careful not to damage the alum inum piston OR piston
groove in cutting to remove the ring.
2. Clean the piston and piston ring grooves with a
recommended cleaning solvent and blow the piston dry with
dry air (Trichlorethylene, Stoddard solvent, kerosene, or
equivalent).
3. Set the piston on end on a clean, flat surface and
install the Ring Installer G uide J-24608-2 on the end of the
piston (Fig. 45).
4. Install a Teflon ring on the Ring Installer Guide
J-24605-2 as shown in Fig. 45,
w ith the dished or dull-
side down and glossy-side up.
5. Push the Ring Installer J-24608-5 down over the
Installer G uide J-24608-2 to install the Teflon ring in the
piston ring groove (Figs. 46 and 47). If the Teflon ring is
slightly off position in the ring groove, it can be positioned
into place by fingernail or blunt-edged tool that will not
damage the piston.
The Ring Installer J-24608-5 will retain the Installer
Guide J-24608-2 internally when the Teflon ring is installed
on the piston. Remove the Installer G uide from the Ring
Installer and
DO NOT STORE THE INSTALLER
GUIDE IN THE RING INSTALLER, as the Ring
W ARNING : Exercise personal care in
cutting the piston ring for removal.
POSITION
1
POSITION
2
POSITION
3
SELECT
AND USE
SHOE NO.
PISTON NO. 1 .019" .0195" .019" 19
PISTON NO. 2 .020" .020" .020" 20
PISTON NO. 3 .021" .021" .022" 21
Rear
Thrust
B e a rin g
R e a r
Thrust
Races
C la m p J-8001-1
S le e v e J -8 0 0 1 -2 _>• , . ,.
D ia l In d ic a to r
J-8 0 0 1 -3
Fig. 4 2 -- S e le ctio n o f Proper A-6 Shoe Disc Fig. 4 3 -- G a g in g Rear T h r u s t Race