TM 5-3805-280-24-1
Tests
3. Disconnect a pilot line (A) at pilot cap fitting. Install tee
(B) and pressure gauge (C).
4. Install the temperature probe on the hydraulic
tank-to-pump suction line. (See JT05800 Digital
Thermometer Installation in this group.)
5. Heat hydraulic oil to the specified temperature. (See
Hydraulic System Warm-Up Procedure in this group.)
Oil--Specification
Temperature ........................................................... 50 5C (120 10F)
6. Start and run engine at specification.
Engine--Specification
Speed in Standard Mode ...................................... Slow Idle and Fast Idle
Work Mode Selector--Specification
Position ........................................................................................ Dig Mode
A--Pilot Line
B--Tee Fitting
C--Gauge
E Mode Switch--Specification
Position .................................................................................................. Off
HP Mode Switch--Specification
9025
25
Position .................................................................................................. Off
64
Auto-Idle Switch--Specification
Position .................................................................................................. Off
Valve Spool Actuating--Specification
Pressure ............................................... 3335--3920 kPa (33.3--39.2 bar)
(485--570 psi)
NOTE: Spool actuating pressure can be checked for each
function by installing the tee and gauge in that
pilot line and then actuating that function.
7. Actuate the function being checked to full stroke.
If valve spool actuating pressure is not to specification,
check pilot system pressure. (See Pilot Pressure
Regulating Valve Test and Adjustment in this group.
Continued on next page
TX,9025,GG2647 1908JUN983/4
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