R 20 P/U 2WD V8-379 6.2L DSL (1988)
8.
Cut the line and insert Tee coupling. See view "A" in Figure 3. Use 3/32 rubber vacuum line for the coupling. Install the added vacuum line to the
bottom leg of the Tee.
FIGURE 4
Accumulator Insulation Installation:
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 portion and tighten the clamp.
Revised Refrigerant Charge:
IMPORTANT:
When possible, use appropriate freon recovery and recycling methods. Refer to Dealer Service Bulletin No. 89-253-1B for equipment
information.
1.
Check the refrigerant (freon 12) 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.