Chevrolet 70 1969 Series, Shop Manual

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C AB A N D BO DY M O U N T IN G S 1-47
Figure 26— Outside Air Intake
Figure
2 7 — Heater
Installation
and closed manually by control knob on dash. The
control knob pushed inward closes outlet door and
pulling out on knob opens outlet door. A spring-
loaded door prop retains door snug in either the
fully opened or closed positions. A rubber seal
around perimeter of outlet door provides positive
sealing of outlet. Seal, which is glued to door, can
be readily replaced if necessary.
C O N T R O L A D J U S T M E N T (D R IV E R ’S SIDE)
N O T E : Refer to inset - figure 26.
When control knob on dash is pushed complete­
ly in, the air outlet door should close snug to out­
let opening.
If door is not seated completely with control
knob in this position, loosen screw at control con­
duit clamp above door which will allow compres­
sion spring within door telescopic prop to force
door tight to opening. Retighten clamp screw after
making adjustment.
HEATING
The heater used on tilt cab models is of the
air-flow type (fig. 27) and is serviced in same
manner as air-flow heater described previously
under ' 'Conventional Model Cabs.”
CAB REPLACEMENT
Necessary equipment for efficient and safe
replacement of cab consists of a chain hoist (1-ton
minimum capacity), a sling having padded hangers,
and two or more support blocks to rest cab on
when it is removed from chassis.
N O T E : A wood 4 x 4 , 7-1/2 feet long position­
ed through cab door openings with a hoist chain
attached securely to each end can be used. How­
ever, means of protecting top of cab from chain
must be provided.
CAB REMOVAL
1. Disconnect battery ground strap.
2. On vehicles with air brakes, exhaust air
supply from air tank at drain fitting. Remove bum ­
per (with attached air tank, if used).
3. Open heater temperature control on dash to
full open position, and drain radiator. Disconnect
heater hoses at cab connections.
Figure 2 8 — Lifting Sling Attached to Cab
CHEVROLET SERIES 70 -80 H EAVY DUTY TRUCK SH O P M A N U A L