-8-627-34 T.O. 35 C2-3-442-2
TM-07464A-35
TM 5-6115-457-34
12-18.
REMOVAL.
Compressed air used for cleaning and
P
drying purposes can create airborne
Refer to Operator and Organiza-
particles that may enter the eyes.
ti onal Maintenance Manual and remove
Pressure shall not exceed 30 psig.
coolant pump.
Eye protection is required.
12-19. TEST .
b. Clean brush and spring assembly and
a. Connect coolant pump to test equip-
brush openings with filtered low pressure
ment as illustrated in figure 11-4, except
compressed air.
test equipment fuse rating should be
4 amperes.
c. Clean remaining parts in an ap-
b. Perform test procedure specified in
proved cleaning solvent and dry thoroughly.
1.2-22.
INSPECTION.
ing test should be the same as provided in
test procedure except motor amperage
a. Inspect springs for cracks, distor-
draw should not exceed 3.3 amperes in
tion, and broken ends.
step a. 5. and motor RPM in step a. 6.
should be 7500.
b. Test relief valve spring for proper
12-20. DISASSEMBLY.
spring rate using a suitable spring tester.
Refer to figure 12-6 and disassem-
Spring rate should be 1 pound 0.1 pound
ble the coolant pump in the order of index
at 0.750 inch working length. After rate
numbers assigned. Pay particular atten-
test, check spring for proper free length
ti on to the following:
of approximately 1.164 inches.
a. Mark alignment marks on port plate
(6), cam ring (8), adapter (13), and motor
c. Test seal spring for proper spring
(23) prior to disassembly to insure proper
rate. Spring rate should be 2.5 pounds
reassembly.
0.25 pound at 0.25 inch working length.
WARNING
After rate test, check spring for proper
free length of approximately 0.470 inch.
Avoid breathing fumes generated by
unsoldering/soldering. Eye pro-
d. Inspect relief valve ball and ball
tection is required.
seat in port plate for grooves, scratches,
b. Move shell (22) away from motor
and nicks .
and unsolder wire (20) from pump.
c. Replace all packings.
e. Inspect parts for cracks, damaged
12-21. CLEANING.
contact surfaces, signs of scuffing, nicks,
and burrs.
a. Clean wire and motor with a clean
lint-free cloth moistened in an approved
f. Inspect threads for damages.
cleaning solvent and dry thoroughly.
g. Inspect pump components for wear,
WARNING
refer to figure 11-3.
Cleaning Solvents are flammable and
moderately toxic to skin, eyes and
h. Inspect brush and spring assembly
respiratory tract. Eye and skin
brushes for cracks, chips, and wear by
protection required. Good general
comparing brush with new brush. Replace
ventilation is normally adequate.
brush and spring assembly if brush is
worn to half its original length.
12-9
Change 8
