TM 55-4920-231-14
b. Installation. Install the altimeter (5) in a
a. Removal.
manner similar to the way the rate-of-climb in-
(1) Remove the hose and tube assemblies
dicator (4) is installed (paragraph 65b).
that are connected to the valves (paragraph 63).
(2) Remove tube tee (2, figure 22) and
tube union (22) from tube assemblies (3).
(3) Remove mounting nuts (6) securing
a. Removal. Remove the airspeed indicator (6,
needle valves (7) to tester case (29). Remove
rate-of-climb indicator (4) is removed (para-
valves.
graph 65a).
b. Disassembly.
b. Installation. Install the airspeed indicator
(1) The external ease leak valves (7, figure
(6) in a manner similar to the way the rate-of-
3) and the needle valves (7, figure 22) are dis-
climb indicator (4) is installed (paragraph 65 b).
assembled in the same manner,
(2) Disassemble in sequence of the index
numbers in figure 23.
a. Removal. Remove the manifold pressure
c. Cleaning and Inspection.
gage (8, figure 21) in a manner similar to the
(1) Clean the parts, except O-rings, with
way the rate-of -climb indicator (4) is removed
cleaning solvent, Federal Specification P-D-680
(paragraph 65a).
and dry thoroughly.
b. Installation. Install the manifold pressure
(2) Inspect the parts for cracks, breaks, ex-
gage (8) in a manner similar to the way the rate-
cessive wear, distortion, deterioration, and dam-
of-climb indicator (4). is installed (paragraph
aged threads.
65b).
(3) Report defective parts to higher au-
thority.
d. Reassembly.
a. Removal. Remove the fuel pressure
(1) The external case leak valves (7, figure
(9, figure 21) in a manner similar to the way
3) and the needle valves (7, figure 22) are re-
the rate-of-climb indicator (4) is removed (para-
assembled in the same manner.
graph 65a).
(2) Reassemble in the reverse sequence of
b. Installation. Install the fuel pressure (9)
index numbers shown in figure 23.
in a manner similar to the way the rate-of-climb
e. Installation.
indicator (4) is installed (paragraph 65 b).
(1) Place needle valve (7, figure 22) in
position, on test case (29) and secure with
mounting nut (6).
a. Removal.
(2) Install tube tee (2) and tube union
(1) Remove the four screws (19, figure 21)
(22) on the tube assemblies (3).
and lockwashers (20).
(3) Install the tube and hose assemblies
(2) Break the cement and remove calibra-
tion chart (21) from upper access panel (22).
b. Installation.
(1) Apply an approved cement to back of
a. Removal. Each of the case leak wolves (16,
calibration chart (21 ) and place in position on
17, and 18, figure 22) is removed in a similar
upper access panel (22).
manner as follows:
(2) Install the four lockwashers (20) and
screws (19) securing calibration chart (21) to
(1) Disconnect hose assemblies from
upper access panel (22).
elbows (20 and 21) on valve, as instructed in
(2) Remove screws (13) and lock washers
VALVES.
(14) securing valve to tester case (29).
(3) Remove cap and chain assembly (15)
The external case leak valves (7, figure 3)
and spacers (19) and remove valves from case
safety valves (13, figure 4), and the control
valve.
valves (11, 12, 13, and 14, figure 20) are needle
(4) Remove elbows (20 and 21) from
valves and constructed in a similar manner. Re-
valve.
place as follows:
