Chapter 2. OPERATING INSTRUCTIONS - TM-55-4920-442-13-P0021

TM 55-4920-442-13&P

CHAPTER 2

OPERATING INSTRUCTIONS

SECTION I. DESCRIPTION AND USE OF CONTROLS AND INSTRUMENTS.

2-1. Controls and instruments. The controls and instruments for the operation and monitoring of the test stand are

located at the operator's station at the rear of the stand.

2-2. The high pressure relief valve is located adjacent to the high pressure filter inside the access door on the right hand

side of the unit.

2-3. All controls are identified in table 2-1 and located on figure 2-1.

The item numbers used on the hydraulic schematic diagram, figure 1-4, are those assigned to the same components on

the unit and used on the marker plates on the control panel. Control settings are explained in table 2-2.

SECTION II. OPERATING PROCEDURES.

2-4. Personnel operating the test stand must be familiar with the location and function of all controls and indicators and

have a thorough knowledge of the principles of operation involved.

WARNING

Extremely high hydraulic fluid pressures are developed during test stand operation. The

connecting hoses must be free of defects and the connection fittings clean to avoid hose

rupture or leaks.

2-5. Preliminary checks. Prior to test stand operation, the following steps should be taken to make certain that the stand

will operate properly and safely.

WARNING

Use volatile solvents only in a well ventilated area. Avoid prolonged contact with the skin.

a. Inspect the connecting hoses and clean the fittings using a solvent conforming to specification PD-680, if

necessary.

2-1