TM 5-3805-281-24-1
Tests
NOTE: Proportional solenoid valve output pressure must
be measured using a pressure gauge. The
pressure shown on laptop computer is calculated
from data stored in the engine and pump
controller. The electrical signal from the controller
to solenoid coil does not change as the solenoid
valve adjustment is made.
2. Disconnect the line (F, G, K, or L) at solenoid valve
manifold (A) for solenoid valve (B--E) being checked.
Install tee (N) and male quick coupler.
Connect the digital pressure and temperature analyzer
and transducer or a gauge (C).
3. Connect the laptop computer. (See procedure in this
group.)
4. Install the temperature probe on the hydraulic
tank-to-pump suction line. (See JT05800 Digital
Thermometer Installation in this group.)
A--Solenoid Valve Manifold
5. Heat hydraulic oil to the specified temperature. (See
B--Arm Regenerative Solenoid Valve (SC) Line
Hydraulic System Warm-Up Procedure in this group.)
C--Speed Sensing Solenoid Valve (SD)
D--Propel Speed Change Solenoid Valve (SI) Line
E--Power Boost Solenoid Valve (SG)
Hydraulic Oil--Specification
9025
F--To System Relief and Power Boost Valve
25
Temperature ........................................................... 50 5C (120 10F)
G--To Propel Speed Change Valve
95
K--To Pump Regulators Speed Sensing Port
L--To Arm Regenerative Valve
6. Run the machine at specification.
M--Gauge
N--Tee
Engine--Specification
Speed ........................................................................................... Fast Idle
Work Mode Selector--Specification
Position ........................................................................................ Dig Mode
E Mode Switch--Specification
Position .................................................................................................. Off
HP Mode Switch--Specification
Position .................................................................................................. Off
Auto-Idle Switch--Specification
Position .................................................................................................. Off
Continued on next page
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