Gaging Operation

Install or Connect

Tools Required:
J 9396 Compressor Holding Fixture
J 9397 Compressing Fixture
J 9432 Needle Bearing Installer
J 21352-A Compressor Support Block

Installing The Needle Bearing:

1. Needle bearing (21) to the front cylinder (29) with J 9432.
^ Support the cylinder half (29) on J 21352-A.
^ Insert needle bearing (21).
^ Insert J 9432 into the hub end (inner side) of the cylinder head (29) and drive the needle bearing into the cylinder.
^ Production compressors use 1/2 and 5/8-inch needle bearings. The bearings are interchangeable
^ Remove cylinder half (29) from J 21352-A

2. J 9397 on J 9396.
3. The front cylinder half (29) in J 9397 flat side down.
^ The front cylinder half (29) has a long slot extending out from the shaft hole. The "legs" of the front cylinder half (29) will point upward.

Installing The Rear Thrust Races And Bearings:

4. "Zero" thrust race (27), thrust bearing (28) and "zero" thrust race (27) to the front end of the shaft (38).
^ Lubricate the races (27) and the bearing (28) with petroleum jelly.

5. Threaded end of the shaft (39) through the needle bearing (21) in the front cylinder half (29) and allow the thrust race (27) and bearing (28) to rest on the hub of the cylinder.
6. Insert a thrust race on the rear end of the shaft (38) so that it rests on the hub of the axial plate.
^ Lubricate the races and bearing with petroleum jelly.

Installing The Front Shoe Disc:

7. Place the balls (32) into the sockets of number one piston .
^ Lubricate the ball sockets with 525 viscosity refrigerant oil.

8. Place the shoe discs (33) over the ball (32) in the front end of the piston.
^ Lubricate the cavity of the shoe disc with 525 refrigerant oil.
^ The front end of the piston (32) has an identifying notch in the casting web.

Important
^ Do not install the shoe discs (34) on the rear of the piston (32).

9. Rotate the shaft and axial plate (39) until the high point of the axial plate is over the No. 1 piston cylinder bore.
10. Lift the axial shaft assembly (39) up a little out of front cylinder half (29).
^ Hold the front thrust races and bearing ("zero" race, race bearing, "zero" race) against the axial plate hub.

Installing The Piston During Gaging Operation:

11. Position the No.1 piston (32) over the No.1 cylinder bore (notched end of the piston being on the bottom and the piston straddling the axial plate) and lower the shaft to allow No.1 piston to drop into its bore.
12. Repeat step 11 for pistons Nos. 2 and 3.

Assembling The Cylinder Halves:

13. Install the rear cylinder half (42) on the pistons, aligning the cylinder with the discharge cross-over tube hole in the front cylinder.
^ Tap the piston into place using a plastic mallet or piece of clean wood and a hammer.

14. Position the discharge cross-over tube opening between a pair of compressing fixture bolts to permit access for the feeler gage.
15. Install the top plate to J 9397.

Tighten
^ Nuts to 20 N.m (15 ft. lbs.).