TM 55-4920-384-13&P
Section I. OPERATING UNDER USUAL CONDITIONS
(5) Place ignition switch (23, fig. 1-9) in ON
2-1. Operating Under Usual Condi-
position
tions. Perform the following operations:
(6) Depress starter button (24, fig. 1-9) for 3 to
4 second intervals.
a. Preliminary operations are as follows:
(1) Locate test stand in desired position and
lock hand brake.
NOTE
(2) Open all engine compartment doors and
For manual start refer to paragraph 2-
1e. For cold weather (below 20 F)
NOTE
Doors must remain open while stand
(7) When engine starts, return choke to open
is in operation.
position and allow engine to WARM UP for approxi-
mately 5-10 minutes.
(3) Perform daily maintenance schedule in ac-
(8) As soon as engine starts check for normal
cordance with Table 3.1 and paragraph 3-1 - Oper-
oil pressure reading.
ators Daily Service.
c. Operation.
(4) Visually check engine cooling air intake
(1) Pull out engine throttle to full open posi-
screen.
tion and lock.
b. Starting. (Normal conditions).
(2) Adjust hi pressure relief valve as follows:
(a) Turn pressure compensator control
CAUTION
clockwise to the maximum pressure position (full
Do not couple inlet/outlet hoses
clockwise).
until relief valve, volume and
(b) Open outlet valve and adjust volume
pressure compensator is set.
control for approximately 1 gpm flow.
(3) Increase pressure by closing the by-pass
(1) Close flow
control valve
(17, fig. 1-9) and
above pressure of the system to be tested indicated
(2) Adjust volume control valve
(18, fig. 1-9)
(19, fig. 1-9) to test pressure below system pressure.
to minimum delivery position.
Then raise relief valve setting slowly until a read-
(3) Place return
selector valve
(20, fig. 1-9) to
ing of 150/200 psi above system test pressure is in-
reservoir position.
dicated.
(4) Place throttle control (22, fig. 1-9) to
ap-
proximate mid position and choke (21, fig. 1-9) to
full closed position.
d. Adjust Compensator. Adust compensator
NOTE
(1) Adjust volume control valve
(18, fig. 1-9)
When starting the engine for the first
for delivery requirement (GPM) of system to be
time, or stand has been out of oper-
tested.
ation for a while, pump gasoline into
(2) Slowly close by-pass valve
(14, fig. 1-9)
the dry carburetor using the primer
until the desired system test pressure is observed on
lever on the fuel pump.