TM 5-3805-280-24-1
Tests
PILOT PRESSURE REGULATING VALVE
TEST AND ADJUSTMENT
SPECIFICATIONS
50 5C (120 10F)
Oil Temperature
Engine in Standard Mode Speed
Fast Idle
Work Mode Selector Position
Dig Mode
E Mode Switch Position
Off
HP Mode Switch Position
Off
Auto-Idle Switch Position
Off
Pilot System Pressure
3925 + 980 - 490 kPa
(39.2 + 9.8 - 4.9 bar)
(570 + 140 - 70 psi)
Per 0.25 mm (0.010 in.) Shim
78 kPa (0.75 bar) (11 psi)
Approximate Change Pressure
Per 0.5 mm (0.020 in.) Shim
157 kPa (1.57 bar) (23 psi)
Approximate Change Pressure
Per 1.0 mm (0.040 in.) Shim
304 kPa (3.04 bar) (44 psi)
Approximate Change Pressure
Plug-to-Pilot Pressure Regulating
25 Nm (215 lb-in.)
Housing Torque
ESSENTIAL TOOLS
202862 (3/4-16 M 37 x 3/4-16 F 37 Sw x 7/16-20 M 37) Tee
TH108328 Adapter
6 mm Hex Key Wrench
9025
25
59
SERVICE EQUIPMENT AND TOOLS
Gauge 7000 kPa (70 bar) (1000 psi)
JT05800 Digital Thermometer
JT02156A Digital Pressure and Temperature Analyzer
Purpose of test is to ensure there is enough pilot pressure
to operate all the pilot system functions and to adjust the
pressure as necessary. The pilot pressure regulating valve
is used to regulate the pilot system pressure.
Continued on next page
TX,9025,GG2646
1908JUN981/6
6-190