TM 5-3805-281-24-1
Tests
PROPORTIONAL SOLENOID VALVE TEST AND ADJUSTMENT
SPECIFICATIONS
SERVICE EQUIPMENT AND TOOLS
50 5C (120 10F)
Hydraulic Oil Temperature
17, 19, and 22 mm Combination Wrenches
Engine Speed
Fast Idle
JT02156A Digital Pressure and Temperature Analyzer
Work Mode Selector Position
Dig Mode
JT02162 Transducer 35 000 kPa (350 bar) (5 000 psi)
E Mode Switch Position
Off
7 000 kPa (70 bar) (1 000 psi) Gauge
HP Mode Switch Position
Off
JT07290 Laptop Computer
Auto-Idle Switch Position
Off
JT07274F Excavator Diagnostics Program Disk
Propel Speed Switch Position
Fast Speed
JT07273 Cable
Laptop Computer Reading
Arm Regenerative Solenoid
JT05800 Digital Thermometer
Valve (SC) Pressure
196 kPa (1.96 bar) (28 psi)
13 mm Combination Wrench
Laptop Computer Reading
Speed Sensing Solenoid Valve
4 mm Hex Key Wrench
(SD) Pressure
196 kPa (1.96 bar) (28 psi)
Laptop Computer Reading
Propel Speed Change Solenoid
Procedure is to check that the hydraulic pressure
Valve (SI) Pressure
196 kPa (1.96 bar) (28 psi)
output for the proportional solenoid valves are within
Laptop Computer Reading
Power Boost Solenoid Valve
the specified pressure range of the pressure shown on
(SG) Pressure
196 kPa (1.96 bar) (28 psi)
the laptop computer. The pressure shown on laptop
Per 1/4 Turn of Adjusting
98 kPa (0.98 bar) (14 psi)
computer is a calculated pressure from the electrical
Screw Approximate Change
signal from the engine and pump controller (EPC).
Pressure
End of Adjusting Screw to Nut
4 mm (0.157 in.)
Must Not Exceed Length
Adjusting Screw-to-Housing Nut
8.8 Nm (6.5 lb-ft) (78 lb-in.)
9025
ESSENTIAL TOOLS
25
JT03001 (7/16-20 M 37 x 7/16-20 F 37 Sw x 7/16-20 M 37)
93
(Parker No. 063T--4--4) Tee
XPD34BTX (1/8 x 7/16-20 F 37) Male Quick Coupler
Continued on next page
CED,TX08227,3038 1923MAR981/5