GMC 1990 Light Truck Repair Manual page 30

1B1-10 A-6 AIR CONDITIONING COMPRESSOR
49. Plate
_________________________________ F1585
Figure 18—Removing the Rear Head
Plate and Seal
5. Seal (52).
6. Rear discharge valve plate assembly (49) (figure
19).
• Use two small screwdrivers under the reed
retainers to remove the assembly.
• Do not position the screwdrivers between the
reeds and the reed seats.
7. Rear suction reed plate (48) (figure 20).
• Do not pry up on the horse-shoe shaped reed
valves.
8. Oil pick-up tube (37) with J 5139 (figure 21).
9. Seal (36).
10. Compressor to J 21352.
• Loosen the compressor from J 9396.
• Place J 21352 over the oil pump end of the
shaft.
• Holding the support block in position with one
hand, lift the compressor from the holding fix­
ture with the other hand.
• Invert the compressor and place the shaft end
up on the bench with the internal assembly
support block resting on the bench.