TM 5-3805-280-24-1
Tests
PILOT PUMP FLOW TEST
SPECIFICATIONS
50 6C (120 10F)
Oil Temperature
Engine in Standard Mode Speed
2000 rpm
Work Mode Selector Position
Dig Mode
E Mode Switch Position
Off
HP Mode Switch Position
Off
Auto-Idle Switch Position
Off
Pilot Pump Flow Rate
25.0 L/min (6.6 gpm) at 3925 kPa
(39 bar) (570 psi) and 2000 rpm
SERVICE EQUIPMENT AND TOOLS
Flow Meter
JT05800 Digital Thermometer
JT05801 Clamp-On Electronic Tachometer
Test will determine the condition of pilot pump. The pump
is driven at engine speed. Inspect pilot filter and suction
screen for indications of hydraulic system problems.
TX,9025,GG2663
1908JUN981/4
9025
25
121
1. Stop the engine.
Loosen vent plug (K) to release the air pressure in
hydraulic oil tank.
K--Vent Plug
Continued on next page
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1908JUN982/4
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