Pontiac FIREBIRD 1972 Service Manual page 1095

TURBO HYDRA-MATIC (M-38) TRANSMISSION 76-57
Fig. 7G-98 Removing Direct Clutch Plates
6.
On V-8 models, remove four (4) faced (lined) plates
and four (4) steel separator plates (Fig. 76-98).
On
6 cylinder models, remove three (3) faced (lined)
plates and three (3) steel separator plates (76-98).
7. Using Clutch Spring Compressor J 23327-1 in an
arbor press, compress direct clutch piston return
spring seat and remove piston retaining ring.
8. Remove tools, spring seat, seventeen (17) piston re-
turn springs and direct clutch piston assembly.
9. Remove outer and inner seals from direct clutch pis-
ton and center seal from direct clutch drum hub
(Figs. 76-99 and 76-100).
Fig. 7G-99 Removing Piston Inner and Outer Seals
r
Fig. 7G-100 Removing Drum Hub Center Seal
INSPECT
1. Wash all parts in cleaning solvent, blow out all oil
passages and air dry.
2. Inspect drive and driven clutch plates as follows:
a. Dry the faced (lined) plates with compressed air
and inspect for
-
pitting and flaking, wear, glaz-
ing, cracking, charring, and/or chips (metal par-
ticles) imbedded in lining. If faced plate exhibits
any of these conditions, replacement is required.
b. Wipe the steel (separator) plates dry and check
for heat discolorations. If the surface is smooth
and an even color smear is observed, plates should
be re-used. If surface is scuffed or shows severe
heat discoloration, the plates must be replaced.
3. Check all springs for collapsed coils or signs of distor-
tion.
4. Inspect piston for cracks.
5. Inspect overrun clutch inner cam and outer race for
scratches, wear or indentations (Fig. 76-101).
6.
Inspect overrun roller clutch assembly rollers for
wear and roller springs for distortion.
7. Inspect clutch drum for wear, scoring, cracks, proper
opening of oil passages, wear on clutch plate drive
lugs and free operation of ball check (Fig. 76-102).
8. Inspect direct clutch drum bushing for galling or
scoring. If bushing is damaged, replace as follows:
a. With direct clutch drum properly supported,
remove bushing (Fig. 76-103), using care not to
score inner surface of direct clutch drum.