TM 55-4920-231-14
(5) Remove relief valves (25, 26, 27, 28,
77. OIL RESERVOIR.
and 29) in the same manner as above.
Remove the oil reservoir (7, figure 24) from
b. Cleaning and Inspection.
the chassis (20) to replace and disassemble far
(1) Clean the parts with a clean, lint-free
cleaning and repair as follows:
cloth dampened with cleaning solvent, Federal
a. Removal.
Specification P-D-680 or equivalent, and dry
thoroughly.
(1) Remove chassis assembly (figure 24)
(2) Inspect parts for breaks, cracks, loose
from tester case (paragraph 73a).
screws, and damaged threads.
(2) Remove hose assembly (30, figure 25)
(3) Replace defective valve and report de-
from elbow (13) and remove cap (31) and tube
fective parts to higher authority.
nipple (32 ) from hose assembly.
c. Installation.
(3) Remove tube assemblies (5, 33, and
(1) Place relief valve (24, figure 25) in
34).
position on chassis (51) and secure with screws
(4) Remove pressure check valve (16) and
(23), lockwashers (22), and nuts (21).
elbow (13) from oil reservoir (36).
(2) Install relief valves (25, 26, 27, 28, and
(5) Remove screws (35) and lockwashers
29) in the same manner as above.
(22) securing oil reservoir (36) to chassis (51).
(3) Install tube assembly (6, figure 25),
Remove oil reservoir.
pipe tees (19 and 20), elbows (14), and pipe
(6) Remove pipe nipple (15) and selector
nipple (15) on the relief valves.
valve (37) from oil reservoir (36).
(4) Install pressure filter sump (10, figure
(5) Install chassis assembly in tester case
numbers in figure 27.
(paragraph 73c).
