GMC 4000 Series Service Manual page 445

Sec. 7A
Page 434
TRANSMISSION CONTROL LINKAGE
1 Expansion Plug
2 Shift Rail
3 Nut
4 W asher
5 Yoke Guide
6 S elector L ever B ell
Crank
7 Snap Ring
8 W asher
9 Nut
10 Shift Rail Yoke
Bushing Replacement
1. P ress or drive shift rail yoke housing out
of bore in shift rail yoke (9, fig. 3).
2. Using a suitable sleeve, p ress or drive
new bushing into bore of shift yoke.
Oil Seal Replacement
1. P ress or drive oil seal (20, fig. 8) out of
remote control cover.
2. With a suitable sleeve, press or drive new
oil seal into bore of cover.
NOTE: Coat outer diameter of oil seal with
a light coat of sealing cement prior to installation.
Assembly
NOTE: Key numbers
figure 3.
1. Coat all moving parts with the lubricant
recommended in LUBRICATION (SEC. 0).
2. Insert shift rail (2) part way into remote
control cover (5), with flat on rail toward gasket
face.
3. Position shift finger (21) on shift rail (2)
with off-center hole to the front. Push shift rail
the remaining distance into cover.
4. Install roll pin (22) to retain shift finger
(21) on shift rail (2).
5. With lock nut (6) installed on shift yoke
guide (7), install guide in cover (5). Tighten lock
nut firmly.
6. Install snap ring (19) in groove of rail (2).
G M C S E R V I C E M A N U A L
11 Oil Seal
12 Roll Pin
13 Nut
14 W asher
15 Selector L ever
16 Selector Lever Link
A ssem bly
17 Remote Control
Cover
18 Shift Finger
19 R oll Pin
Figure 4 — Rem ote Control A s s e m b ly ( N e w
in text refer to
Process
540)
7. Install shift rail boot (8) on shift rail (2).
8. Position shift rail yoke (9) and rail selec­
tor (12), with offset toward front, on yoke guide
(7) and shift rail.
9. Install roll pin (14) into holes in rail
selector (12) and shift rail (2).
10. Install ball joint assembly (13) on rail
selector (12), then install bellcrank (17) on ball
joint assembly (13).
11. Install expansion plug (1) in shift rail
opening in remote control cover (5).
NEW PROCESS 540 - REMOTE
CONTROL ASSEMBLY
Disassembly
NOTE: Key numbers
figure 4.
1. Remove attaching parts retaining selector
lever (15) and selector lever bell crank (6) to
selector lever link assembly (16), then remove
bell crank and link assembly.
2. Using a hammer and punch, remove roll
pin (12) attaching selector lever (15) to shift rail
(2). Remove shift rail yoke (10) and selector lever
(15) from shift rail.
3. Using an Easy-Out, remove roll pin (19),
attaching shift finger (18) to shift rail.
4. Remove shift rail (2) from remote control
cover (17).
5. Remove yoke guide (5) from cover (17).
in text refer to