Disassembly and Reassembly
61
7. Thoroughly clean the crankshaft to remove all
metal chips and coat with compressor oil.
Compressor Body Repair
Removal
1. Remove the cylinder heads (see “Cylinder
Head” on page 32), the discharge valve plates
(see “Discharge Valve Plates” on page 33), the
seal plate (see “Seal Plate Assembly” on page
35), the oil sump and the oil pickup screen
(see “Oil Sump and Oil Pickup Screen” on
page 44), the oil pump (see “Oil Pump” on
page 47), the connecting rods, pistons and
sleeves (see “Connecting Rod, Piston and
Sleeve” on page 51) and the crankshaft (see
“Crankshaft” on page 54).
2. If necessary, remove all the check valves.
a. The two lower check valves are located in
the front seal area.
b. The two upper check valves are located in
the sump area.
c. The large check valve is located in the
passageway between the suction cavity
and the sump. Use tool P/N 204-464 to
remove the large check valve.
NOTE: In order to remove the large check
valve from four cylinder compressors built
after April 1987, it will be necessary to apply
heat to soften the factory-applied Loctite.
1.
Remove Rivets
2.
Integral Counterweight
3.
Mark Counterweights
4.
Add-On Counterweight
5.
Counter Sink 82°
6.
Tap with 5/16-18 UNC Threads
Figure 100: Installing Counterweights
1
2
3
4
5
6
AGA776
1.
Upper Check Valves
2.
Large Check Valve
Figure 101: Check Valve Locations
1.
Tool P/N 204-464
Figure 102: Removing Large Check Valve
1
2
1
AGA573
1
AGA574