G 10 1/2 Ton Van V8-305 5.0L VIN H 4-bbl (1984)
Evaporator Core: Service and Repair
G SERIES
FRONT UNIT
LESS DIESEL ENGINE
1.
Disconnect battery ground cable, then discharge system refrigerant.
2.
Remove coolant recovery tank and bracket.
3.
Disconnect harness connections from core case assembly.
4.
Remove bracket at evaporator case, and right front marker lamp assembly to provide additional access.
5.
Disconnect inlet and outlet lines at accumulator. Plug all open connections. Remove accumulator mounting brackets and accumulator unit.
6.
Remove retaining nuts and screw, and core case assembly from vehicle.
7.
Separate case halves, and remove evaporator core.
8.
Reverse procedure to install, using new O-rings coated with clean refrigerant oil at connections. When installing new evaporator core, add 3 fluid
ounces of fresh refrigerant oil prior to installation.
OVERHEAD SYSTEM
1.
Disconnect battery ground cable, then discharge system refrigerant.
Fig. 6 Rear duct assembly. R & V Series with overhead system
2.
Remove rear duct drain tube, duct to header bracket and roof panel screws, then rear duct assembly, Fig. 6.
Fig. 7 Rear blower motor & evaporator assembly. R & V Series with overhead system
3.
Disconnect blower harness lead and ground wire, Fig. 7.
4.
Disconnect refrigerant lines at evaporator/blower assembly. Plug all open connections.
5.
While supporting unit, remove blower/evaporator assembly support screws at roof rail. Place unit upside down on bench, then remove upper to
lower case retaining screws. Remove lower case half.
6.
Remove upper case to support screws and case from evaporator core.
7.
Remove inlet and outlet lines at expansion valve. Plug all open connections.
8.
Remove expansion valve capillary bulb from outlet line, then the valve.
9.
Remove plastic screen retaining pins at core and screen.
