Chevrolet 70 1969 Series, Shop Manual

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CAB A N D BO DY M O U N T IN G S 1-27
FLAT BLADED TOOL
HORIZONTAL
SEAL
Figure 29— Removing Class Horizontal Seals
3. Referring to figure 27, remove regulator.
4. To install regulator, perform the "Removal"
procedures in reverse sequence.
DOOR GLASS RUN CHANNEL
REPLACEMENT
R E M O V A L
1. Roll window to bottom of door.
2. At upper end of channel, next to vent win­
dow frame, pry end of channel from door using a
small flat bladed instrument.
3. Continue to pull channel downward from
top of door, then upward to remove from side
frame of door.
IN S T A L L A T IO N
1. Apply thin coat of silicone type lubricant
to back and sides of run channel.
2. Start end of run channel into door side
frame, then force it downward in manner shown in
figure 28. By engaging length of channel required
to butt against vent window frame, the amount of
channel to be inserted downward can be determined.
Use thumbs to press channel into position.
N O T E : The run channel can be inserted down­
ward more readily if the window is rolled up and
down during the process.
If run channel cannot be installed as instruc­
ted, it will then be necessary to remove the door
window glass.
DOOR W IN D O W GLASS HORIZONTAL
SEALS REPLACEMENT
N O T E : Refer to figure 29.
1. Remove the vent window and door window
as directed previously under applicable headings.
2. Using a thin flat bladed instrument, pry
seals from door panel in manner shown. Pry a
small amount at each fastener to prevent seal
channel distortion.
3. To install, press seal assembly evenly into
door panel.
4. Install door glass.
CAB REPLACEMENT
R E M O V A L
N O T E : Necessary equipment for efficient and
safe replacement of cab consists of a chain hoist
( 3 /4-ton minimum capacity), a sling having padded
hangers, and two or more support blocks to rest
cab on once the cab is removed from chassis.
1. Disconnect the battery.
2. Remove the hood panels.
3. Drain cooling system if equipped with
heater.
4. Disconnect heater hoses at cab cowl.
5. If equipped with air brakes, exhaust the
pressure from air system.
6. Disconnect all necessary wiring harnesses
and cables from cab or chassis at the most prac­
tical connections.
7. Drain fuel system if supply tank is located
in cab.
8. Detach and/or disconnect all lines between
cab and chassis. N O T E : Do not attempt to salvage
clutch or brake hydraulic fluid. Replace later with
new fluid.
9. Disconnect accelerator linkage at cab cowl.
10. Disconnect parking brake if of the mechan­
ical type.
11. Remove closure panel from cab floor at
transmission shift lever.
12. Disconnect speedometer cable at trans­
mission or at the dash unit.
13. Mark for alignment purposes later, the
steering shaft joint flange-to-steering gear shaft
then remove the flange clamp bolt. When cab is
raised later, this connection will separate,
14. Remove the cab mounting bolts.
15. With a hoist sling device having padded
hangers, engage hangers to cab door openings with
doors partly open.
IM P O R T A N T : Any attempt to lift cab with doors
closed and sling hangers contacting the top of doors
could disturb the alignment of doors.
N O T E : If sling device of type described above
is not available, a solid hardwood 4 x 4, 7-1/2 feet
long, positioned through the cab with hoist chain
attached securely to each end, can be used.
16. Raise cab and remove from chassis.
IN S T A L L A T IO N
1. Place cab mounting components in position
on chassis frame brackets. Refer to figures 2
and 3 for location of mounting components.
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L