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63
T-305
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 30. Oil Pump and Bearing Head
NOTE
If the oil pump was not operating properly, the
entire oil pump & bearing head assembly must
be replaced. Individual parts are not available. If
the pump requires inspection or cleaning, dis-
assemble and reassemble by referring to
Figure 31 . Clean all parts and coat all moving
parts with compressor oil before proceeding
with reassembly.
12
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
12. Gasket
Figure 31. Low Profile Oil Pump
h. Be very careful not to damage the motor windings
when removing the motor end cover (see Figure 32),
as the cover fits over the winding coils. Loosen the
cap screws, break the seal and then remove all caps-
crews except one in the top of the cover. While hold-
ing the cover in place, remove the remaining caps-
crew. 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.
1
2
3
4
5
6
7
1. Strainer Screws and
Washers
2. Suction Strainer
3. Motor End Cover
Gasket
4. Motor End Cover
5. Valve Gasket
6. Suction Service Valve
7. Valve Capscrew
Figure 32. Motor End Cover
i. Remove the refrigerant suction strainer. If it is
removed with ease it may be cleaned with solvent and
replaced. If the strainer is broken, corroded or
clogged with dirt that is not easily removed, replace
the strainer. Install new gaskets upon reassembly.
j. 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 and lock
screw assembly. (See Figure 33.) The slingers at the
end of the tube draw vapor from the crankcase. Re-
move the rotor using a jack bolt. Insert a brass plug
into the rotor hole to prevent damage to the end of the
crankshaft.
k. If the piston rings extend beyond thecylinder tops, the
pistons can be pulled through the bottom plate open-
ing after the piston rings are compressed. A piston
ring compresser will facilitate removal. Each piston
pin is locked in place by lock rings which are snapped
into grooves in the piston wall. (See Figure 34.)
l. Since the stator cannot be replaced in the field, the
terminal plate assembly need not be disturbed unless
a leak exists and the plate assembly needs to be re-
placed. If no terminal plate repair is required, proceed
with reassembly.
Summary of Contents for 69NT40-489-100 Series
Page 2: ......
Page 4: ......
Page 14: ...Safety 10 T 305...
Page 28: ...4 T 305...
Page 40: ...16 T 305...
Page 50: ...26 T 305 Figure 12 Standard Configuration Report...
Page 112: ...88 T 305...
Page 164: ...140 T 305...
Page 167: ...143 T 305 Based on drawings 62 10526 Rev and 62 10736 Rev Figure 90 Electrical Schematic CA...
Page 174: ...150 T 305...