TM 3-1040-263-34
(1) Remove canvas cover (TM 3-1040-
(6) Remove loop clamp from defective
263-12).
aftercooler.
(2) Remove backpack harness(TM 3-
b.
Cleaning and Inspection.
1040-263-12).
(3) Remove protective cage (para 3-7).
(4) Locate loop clamps (fig. 3-3) securing third-
(1) Clean
aftercooler
with
drycleaning
stage heat exchanger to compressor.
solvent.
(5) Unscrew and remove nut (1) and screw (2)
(2) Inspect end nuts for defective threads.
securing each loop clamp (3) to compressor.
(3) Inspect aftercooler for bent fins,
distortion, and damage.
(6) Disconnect third-stage heat exchanger from
c.
Reassembly.
elbow.
(7) Remove loop clamps from defective heat
exchanger.
(1) Place aftercooler in correct position
and aline aftercooler nuts with elbow (7, fig. 3-3) and
b.
Cleaning and Inspection.
elbow (19, fig. 3-1).
(2) Fingertighten aftercooler nuts before
(1) Clean
head
exchanger
with
wrench-tightening to avoid stripping threads.
drycleaning solvent.
(3) Tighten nuts (11.2 to 12.5 pound-feet).
(2) Inspect heat exchanger end nuts for
(4) Locate loop clamps positions (fig. 3-3)
defective threads.
and attach to compressor, using screw (2) arc nut (1).
(3) Inspect heat exchanger for bent fins,
(5) Replace protective cage (para 3 -7).
distortion, and damage.
(6) Replace canvas group (TM 3--1040--
263-12).
c.
Reassembly.
4-17.
Aftercooler Bracket and Elbow
(1) Place third-stage heat exchanger in
correct position and aline heat exchanger nuts with
a.
Disassembly.
elbows.
(2) Fingertighten heat exchanger nuts
(1) Remove canvas group (TM 3-1040-
before wrench-tightening to avoid stripping threads.
263-12).
(3) Tighten nuts (39.6 to 62.4 pound-
(2) Remove aftercooler (para 4-16 a (1)
inches).
through (5)).
(4) Locate loop clamp positions and attach
(3) Remove third-stage heat exchanger
to compressor, using screws (2) and nuts (I).
(para 4--15 a (1) through (5)).
(5) Replace protecting cage (para 3-7).
(4) Remove nut (5, fig. 3-3), washer (6),
(6) Replace backpack harness (TM 3-
elbow (7), and washer (8).
1040-263-12).
(5) Unscrew and remove two screws (9)
(7) Replace canvas cover (TM 3-1040-
and washers (10).
263-12).
(6) Remove aftercooler bracket (11) from
compressor.
4-16.
Aftercooler
Cleaning and Inspection.
b
a.
Disassembly.
(1) Clean all parts in drycleaning solvent.
(2) Dry with pressurized air (10 psi max.).
(1) Remove canvas cover (TM 3-1040-
(3) Inspect parts for cracks, dents,
263-12).
distortion, damaged threads, and aftercooler for bent or
(2) Remove protective cage (para 3-7).
distorted fins.
(3) Locate loop clamps (fig. 3-3) securing
aftercooler to compressor.
c. Reassembly. Reassembly is the reverse of
(4) Unscrew and remove nuts (1) and
disassembly (a above).
screws (2) securing each lop camp (3) to compressor.
(5) Disconnect aftercooler from elbow (7),
and water separator elbow (19, fig. 3-1).
4-7