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Carrier 69NT40-511-199 User Manual

Page 105

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SECT

IO

N

6

6-11

T-268-07

2

1

3

4

5

Set screw must be removed.

1. Oil Pump & Bearing Head

2. Thrust Washer

3. Oil Pickup Tube

4. Oil Inlet Port

5. Oil Pump Inlet

Figure 6-8. Oil Pump and Bearing Head

If it was determined that the oil pump is not operating
properly, the entire oil pump and bearing head assembly

must be replaced. Replacement parts for the pump are
not available. However, in the event the pump requires
inspection or cleaning, disassemble and reassemble by
referring to Figure 6-9. Clean all parts and coat all
moving parts with compressor oil before proceeding

with reassembly.

g. Be very careful not to damage the motor windings

when removing the motor end cover, as the cover
fits over the winding coils. Remove all capscrews
except one in the top of the cover. Then, while

holding the cover in place, remove the remaining
capscrew. Do not allow the cover to drop from its
own weight. To prevent striking the winding,
remove the cover horizontally and in line with the
motor axis.

h. Remove the refrigerant suction strainer. If it is

removed with ease it may be cleaned with solvent
and replaced. (See Figure 6-10.) If the strainer is
broken, corroded or clogged with dirt that is not
easily removed, replace the strainer. Install new

gaskets upon reassembly.

i. Block the compressor crankshaft so that it cannot

turn. Use a screwdriver to bend back the tabs on the
lockwasher and remove the equalizer tube. (See

Figure 6-12.) The slinger at the end of the shaft
draws vapor from the crankcase. It may discharge
through a tee or a single equalizer tube.

1

2

3

4

5

6

7

8

9

10

11

1. Capscrews

2. Cover

3. Reversing Assembly

4. Pinion

5. Gear

6. Drive

7. O-Ring

8. Oil Pump & Bearing

9. Set Screw

10. Relief Valve

11. Pin

Figure 6-9. Low Profile Gear Oil Pump

1

2

3

6

7

8

9

4

5

1. Valve Capscrew

2. Suction Service Valve

(Used on single-speed compressor)

3. Valve Gasket

(Used on single-speed compressor)

4. Suction Service Valve

(Used on two-speed compressor)

5. Valve Gasket

(Used on two-speed compressor)

6. Motor End Cover

7. Motor End Cover Gasket

8. Suction Strainer

9. Strainer Screws and Washers

Figure 6-10. Motor End Cover

j. If the piston rings extend beyond the cylinder tops,

the pistons can be pulled through the bottom plate

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