TM 55-4920-442-13 & P
c. If necessary, drain the preservative fluid from the high pressure pump by removing the drain plug located in the
corner of the pump case. When completely drained, replace plug. Refill pump case with hydraulic fluid conforming to
d. Place main pump circuit breaker located in the electrical components panel in on position. This will energize the
reservoir level gage located on the control panel.
e. Fill the test stand reservoir at the filler neck with hydraulic fluid. Specification MIL-H-83282, until the reservoir
level gage indicates 3/4 to 7/8 full.
Hydraulic fluid level in reservoir must be 1/2 full minimum for proper operation of cooling fan.
3-9. Preliminary lubrication. Carefully inspect the test stand lubricating points referred to in Figure 3-1. Be sure that
initial lubrication exists all specified points.
SECTION III. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
3-10. General information. Maintenance consists of periodic inspections of the hydraulic and electrical components,
including piping, hoses and connections; replacement of filter elements; testing of instrument accuracy; troubleshooting a
malfunctioning unit; and lubrication.
3-11. Periodic inspection. The test stand shall be periodically inspected in accordance with Table 3-1. Servicing shall
be performed prior to each days operation. Lubrication shall be performed as part of periodic inspection.