V 3500 P/U 4WD V8-454 7.4L VIN W 4-bbl (1988)
1.
Install the upper and lower insulators (2) and
(3)
on the A/C accumulator assembly (see Figure 4).
2.
Install the clamp (4) on the insulators at the overlapped position and tighten the clamp.
Revised Refrigerant Charge:
Important
When possible, use appropriate refrigerant recovery and recycling methods. Refer to Truck Service Bulletin 90-OA-22 (Corporate Number 931203R) for
equipment information.
1.
Check the refrigerant (Freon 128) pressures per service manual. If discharge pressures are high, revise the A/C charge as follows:
A Front air conditioning (C60): reduce the charge from 3.25 lbs to 3.0 lbs.
B.
Rear air conditioning (C69): Reduce charge from 5.25 lbs to 4.5 lbs.
2 Refer to section 1B of the service manual, page 1B-13, for charging and discharging procedures.
Inspection:
1.
Start the engine and check all hose connections for leaks.
2.
Place the climate control lever in the "Max A/C" position and ensure that the water valve is operating properly.
PARTS INFORMATION:
WARRANTY INFORMATION For vehicles repaired under warranty use:
Labor Operation:
T7001
Labor Time:
.7 hr
NOTE:
Labor Operation is coded to base vehicle coverage in the warranty system.
