Chevrolet 1977 10 Series, Руководство по ремонту, Страница: 395 / 468

MANUAL TRANSMISSION
7B-15
T A B B E D T H R U S T
Fig. 7B-1
8
B --In s ta llin g T a b b e d T h ru s t W a s h e r
3. Install spring in First-Reverse hub. (M ake sure spring
is bottom ed in hub and covers all three key slots.) Position
three synchronizer keys in hub, with small ends in hub slots
and large ends inside hub. Push keys fully into hub so they
seat on spring. Then slide First-Reverse sleeve and gear over
keys until the keys engage in the synchronizer sleeve (Fig.
7B-13B).
4. Place first gear blocking ring on tapered surface of
gear. Install First gear on output shaft. R otate gear until
notches in blocking ring engages keys in First-Reverse hub.
5. Install tabbed thrust washer (sharp edge facing out)
and retaining snap ring on output shaft (Fig. 7B-18B).
6. Place second gear blocking ring on tapered surface of
gear and install second gear on output shaft with tapered
surface of gear facing front of output shaft (Fig. 7B-19B).
S E C O N D
G E A R
B L O C K IN G
R IN G
Fig. 7B -19B—Installing Second Gear
Fig. 7 B -2 0 B - M e a s u rin g O u tp u t S h a ft End Play
7. Install Second-Third synchronizer assembly with flat
portion of synchronizer hub facing rearw ard on output shaft.
Rotate Second gear until notches in blocking ring engages
keys in Second-Third synchronizer assembly.
NOTE:
It may be necessary to tap synchronizer with
a plastic ham m er to ease assembly.
8. Install retaining snap ring on output shaft and
measure end play between snap ring and Second-Third
synchronizer hub with feeler gauge (Fig. 7B-20B). End play
should be 0.004 to 0.0014 inch. If end play exceeds 0.014
inch, replace thrust washer and all snap rings on output shaft
assembly.
ASSEMBLY OF TR A N SM ISSIO N
1. Coat transm ission case reverse idler gear thrust
washer surfaces with Vaseline (or equivalent) and position
thrust washer in case.
NOTE:
Be sure to engage locating tabs on thrust
washers in locating slots in case.
2. Install reverse idler gear with helical cut gear towards
front of case. Align gear bore, thrust washers, case bores, and
install reverse idler gear shaft from rear of case.
NOTE:
Be sure to align and seat roll pin in shaft into
counterbore in rear of case.
3. M easure reverse idler gear end play by inserting feeler
gauge between thrust washer and gear. End play should be
0.004 to 0.018 inch. If end play exceeds 0.018 inch, remove
idler gear and replace thrust washer.
4. Install shaft tool J-25232 in bore of countergear and
load a row of needle bearing (25) in each end of gear. Use
heavy grease or equivalent to hold them in place. Install one
needle bearing retainer on each end of gear.
5. Position countergear thrust washer in case, use
vaseline or equivalent to hold washers in place.
NOTE:
Be sure to engage locating tabs on thrust washer
in locating slots in case.
6. Insert countershaft into bore at rear of case just far
enough to hold rear thrust washer from being displaced when
the countergear is installed.
7. Align bore in countergear with countershaft and front
thrust washer, then start countershaft into countergear.