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TM 1-4920-446-13 & P
CHAPTER 2
OPERATING INSTRUCTIONS
SECTION I. DESCRIPTION AND USE OF CONTROLS AND INSTRUMENTS
2-1. Controls and Instruments. Controls and instruments for operation and monitoring of the test stand are located at
the right rear side. All controls are identified in Table 2-1 and located on Figure 2-2. Control settings are explained in
Table 2-2.
SECTION II. OPERATING PROCEDURES
NOTE
Before operation ensure test stand is wired for 220 volt operation.
2-2. Test Stand Operation. Personnel operating the test stand must be familiar with the location and function of all
controls and indicators. They must also have a thorough knowledge of the principles of operation involved.
Extremely high hydraulic fluid pressures are developed during test stand operation. The
connecting hoses must be free of defects and the connecting fittings clean to avoid hose
rupture or leaks.
2-3. Preliminary Checks. Prior to operation, the following steps should be taken to ensure the stand will operate properly
and safely.
a. Open all doors prior to beginning checks.
Use volatile solvents only in a well ventilated area. Avoid prolonged contact with the skin.
b. Inspect the connecting hoses and clean the fittings using dry cleaning solvent, P-D-680, if necessary.
Be sure all ground circuits within the unit are intact and that equipment is properly grounded before ener-
gizing.
c. Set circuit breaker CB1 (Figure 2-1) to ON position to check fluid level.
d. Observe the fluid level gauge and add fluid, MIL-H-83282, until gauge indicates ¾ FULL.
2-1
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