D 350 Pickup V8-360 5.9L VIN 5 (1992)
Thermostatic Air Cleaner Actuator: Service and Repair
REMOVAL
1.
Remove the air cleaner housing from throttle body.
2.
Disconnect vacuum hose from blend door diaphragm.
Removing Heated Air Inlet Diaphragm
3.
Drill out the retaining rivet.
4.
Tip the diaphragm slightly forward to disengage lock. When diaphragm is free, slide complete assembly to one side to disengage operating rod
from heat control door.
5.
With the vacuum diaphragm removed, check the door for freedom of travel. When the door is raised to the up position, it should fall freely when
released. If it does not, observe door-to-snorkel side walls for interference or obstructions. Inspect the hinge pin for binding. If necessary, use
compressed air to remove obstructions.
INSTALLATION
Installing Vacuum Diaphragm
1.
Insert operating rod into heat control door. Position diaphragm tang into opening. Use a rivet to fasten the tab in place.
2.
Apply 4 inches of vacuum to diaphragm nipple. The heat control door should operate freely. Manually operating heat control door could cock
the operating rod or diaphragm restricting proper operation of system.
3.
Assemble air cleaner.
4.
Install air cleaner assembly to throttle body and test operation.
