TM 10-5410-228-24
3.9.16 Condenser Coil/Oil Cooler Replacement - Continued.
(14) Install tube assembly nut (9) on reducer (10), finger tight.
(15) Check union (3) sealing surfaces for damage or material build up. If required, replace union (3)
or clean any material build up with clean, lint-free cloth.
(16) Install new O-ring (29) (Item 51, Appx E) on union (3). Ensure O-ring (29) is seated and retained
properly.
(17) Lubricate O-ring (29) with a light coating of hydraulic fluid.
(18) Coat male threads on union (3) with hydraulic fluid.
(19) Remove plug from port on oil cooler (4). Install union (3) on oil cooler (4), finger tight.
(20) Torque union (3) to 1,080 45 in.-lb (90 5 ft-lb).
(21) Secure drain trough (18) to oil cooler (4) with two screws (28).
(22) Secure oil cooler (4) to condenser coil (13) with eight screws (24), sixteen flat washers (25), eight
new lockwashers (26) (Item 26, Appx E) and eight nuts (27).
(23) Secure drain trough (18) to condenser coil (13) with six screws (21), six new lockwashers (22)
(Item 18, Appx E) and six flat washers (23).
The condenser coil/oil cooler assembly is heavy. To prevent injury to personnel, two people
are required to lift condenser coil/oil cooler assembly.
NOTE
Condenser coil/oil cooler assembly consists of condenser coil, oil cooler, and drain trough
assembled together.
(24) Place condenser coil/oil cooler assembly in ECU enclosure (20).
(25) Secure condenser coil/oil cooler assembly to ECU enclosure (20) with ten screws (19).
(26) Slide two hoses (16 and 17) on drain trough (18). Tighten screws on two clamps (15) to secure
two hoses (16 and 17) to drain trough (18).
(27) Remove plugs from port on condenser coil (13) and R22 refrigerant tube assembly (14). Flow
nitrogen through condenser coil while brazing.
Removal and brazing of refrigerant tube assemblies shall be in accordance with safety
requirements. All safety requirements applicable to brazing of tubes shall be observed.
(28) Braze R22 refrigerant tube assembly (14) to condenser coil (13).
(29) Remove plugs from port on condenser coil (13) and R22 refrigerant tube assembly (12).
Protect vibration absorber on R22 refrigerant tube assembly before unbrazing by wrapping
the vibration absorber with a wet rag.
(30) Braze R22 refrigerant tube assembly (12) to condenser coil (13).
(31) Remove plug from end on tube assembly (6). Check tube assembly (6) sealing surfaces for
damage or material build up. Clean any material build up with clean, lint-free cloth. If required,
replace tube assembly (6) per para 3.9.11.
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