Chevrolet 10 Series 1968, Service Manual

Page: 40 / 713

HEATER AND AIR CONDITIONING 1A-9
Tilt Cab
Rem oval (Fig. 18)
1. Remove the screws at the upper edge of the control
unit.
2. Remove the screws which attach the control unit
brace to the lower edge of the dash and lower the
assembly.
3. Remove the blower switch knob and blower switch.
4. Remove cables from the control unit one by one and
mount them in their respective positions on the re ­
placement unit. Check cable adjustment.
Installation
1. Attach the blower switch and wiring to the control
unit. Press the knob onto the switch lever.
2. Place the unit in position in the dash and replace
brace and unit mounting screws.
CONTROL CABLES
Deluxe Air Hearer
Remove the control assembly as outlined under CON­
TROL ASSEMBLY and replace the affected cable or
cables. Check cable adjustment before installing control
assembly in dash. Access to the temperature door cable
at the heater is through the plastic seal at the duct
adapter.
Chevy Van
The control cables are complete control units covered
under CONTROL ASSEMBLY,
Tilt Cab
Remove the control assembly as outlined under CON­
TROL ASSEMBLY and replace the affected cable or
cables. When replacing the temperature cable, remove
the glove box assembly to reach the temperature cable
access plate at the top of the core case. Check cable
adjustment before installing control assembly in dash.
BLOWER SWITCH
All Heaters
Blower switch replacement is covered as a part of
CONTROL ASSEMBLY. Refer to that section for the
necessary steps.
F ig . 17—C h evy Van Heater Controls
RESISTOR UNIT
Deluxe Air Heater
Rem oval (Fig. 19)
1. Remove glove box assembly.
2. Unplug harness connector from resistor unit. Re­
move the unit attaching screws and remove unit.
Installation
1. Place resistor unit in distributor duct and drive in
attaching screws. Connect harness connector to unit.
2. Install glove box assembly.
Chevy Van
Rem oval (Fig. 20)
1. Remove the glove box assembly.
2. Remove heater case and distributor duct to floor
pan attaching screws. Lower the assembly care­
fully by allowing the core tubes to slide through the
grommet in the floor.
F ig . 18—T ilt Cab Heater Controls
CHEVROLET TRUCK SERVICE MANUAL