TM 10-8145-222-23
0016
SERVICE CONTINUED
Adding Oil to Compressor in System
WARNING
Refrigerant system discharge pressure will cause refrigerant oil container to burst
causing personal injury. Never connect oil pump or container to the discharge side of
compressor.
Add oil to the compressor in system as follows:
CAUTION
This procedure is for adding oil to a compressor currently being used by the MTRCS
and is not intended as instruction for adding oil to a replacement compressor. Do not
use this procedure to add oil to a replacement compressor. Use the procedure titled
Adding Oil to Replacement Compressor located in this WP.
Adding Compressor Oil Using Closed System. The following steps provide a method of adding oil to an in-system
compressor. Another method of adding oil using an oil pump can also be found in this work package.
1. Remove suction (Figure 2, Item 1) service valve protective cover.
2. Connect one end of service hose to compressor suction service valve port (Figure 2, Item 5).
3. Connect other end of service hose to manual pump.
CAUTION
Extreme care must be taken to make sure that the manifold common connection
remains immersed in oil at all times. If the common manifold connection does not
remain immersed at all times during the procedure, air and moisture will be drawn
into the compressor and contaminate the system.
4. Immerse manual oil pump in open container of refrigeration oil.
5. Backseat (open) suction (Figure 2, Item 1) service valve 1/4-turn.
6. Crack service hose connection to manual pump to vent small amount of refrigerant through common connection
and oil to purge air from lines.
7. Tighten service hose connection to manual pump.
8. Fully frontseat (close) suction (Figure 2, Item 1) service valve to pull vacuum in compressor crankcase.
9. Start refrigeration unit (TM 10-8145-222-10, Operating Procedures).
10. Manually add oil as required until oil level in sight glass (Figure 2, Item 6) is halfway between minimum and
maximum (Figure 1) while in operation.
0016-4
