TM 9-4120-371-14
b. Repair
(1)
Repairs are limited to straightening of mashed fins and repair or replacement of brackets.
(2) If fins are mashed or dented so that air flow across coil would be blocked, straighten them using a
plastic fin comb.
c. Installation
When handling coils, wear gloves to avoid cuts and reduce damage on the coil.
(1) Using screwdriver, loosely attach brackets to coil with eight flat head screws. Do not tighten
screws.
(2) Carefully slide condenser coil and brackets into unit and aline side mounting holes.
(3) Using screwdriver, secure brackets to casing side panels with eight pan head screws.
(4) Using screwdriver, tighten eight flat head screws in condenser flanges.
(5)
(See para 5-7 and 5-8.)
(6) Install the receiver. (See para 5-28.)
Follow-on procedure: Install condenser coil guard, (See para 4-27.)
The refrigeration system contains a number of pieces of copper tubing in a variety of material grades, sizes,
lengths, and shapes, and a number of elbows, tees, and adapters in several sizes. Observe the following when
replacing any piece of tubing or fitting in the system:
Preliminary procedure: Remove covers and panels as necessary to have access to repair area.
a. Removal
(1)
Discharge the refrigeration system in accordance with paragraph 56.
(2)
Purge the system with nitrogen and debraze the tube connections. (See para 57 and 5-8.)
(3) Remove the part.
b. Installation
(1)
Place the replacement part on the tube ends, purge the system with nitrogen, and braze the tube
joints. (See para 5-7 and 5-8.)
(2)
Replace the dehydrator. (See para 5-13.)
(3) Leak test all newly connected joints and those in the repair area. (See para 5-9.)
(4) Evacuate and charge the refrigerant system. (See para 5-10 and 5-11.)
