TM 5-3805-280-24-1
Tests
Disconnect the two pump control valve pilot lines
9. Heat the hydraulic oil to the specified temperature
(E) at bulkhead (J) on hydraulic oil tank. Connect
by closing flow meter loading valve to increase
the pilot lines to the tees installed at pilot filter.
pressure to 20 685 kPa (207 bar) (3000 psi).
Install caps (C) on fittings at bulkhead.
Oil--Specification
NOTE: Pilot pressure is routed to the pump regulator
Temperature .................................................... 50 5C (120 10F)
valves so the pumps operate at maximum
displacement.
10. Adjust the flow meter loading valve to obtain the
specified test pressures. Adjust engine speed to
5. Install the temperature probe on the hydraulic
specified rpm. Record pump flow at each
tank-to-pump suction line. (See JT05800 Digital
pressure.
Thermometer Installation in this group.)
If pump flow in low, repair or replace pump.
6. Install the tachometer. (See JT05801 Clamp-On
Electronic Tachometer Installation in this group.)
One New Pump--Specification
Flow Rate................................................. 193 4 L/min (51 1 gpm)
7. Check that the flow meter loading valve is open.
typical at 13 790 kPa (138 bar)
(2000 psi) and 2000 10 rpm
8. Operate the machine at specification.
Flow Rate................................................. 155 4 L/min (41 1 gpm)
typical at 20 685 kPa (207 bar)
Engine in Standard Mode--Specification
(3000 psi) and 2000 10 rpm
Speed........................................................................... 2000 10 rpm
One Used Pump--Specification
Work Mode Selector--Specification
Flow Rate............................................... 162 15 L/min (43 4 gpm)
minimum at 13 790 kPa
Position ................................................................................. Dig Mode
(138 bar) (2000 psi) and
2000 10 rpm
9025
Flow Rate............................................... 128 15 L/min (34 4 gpm)
E Mode Switch--Specification
25
minimum at 20 685 kPa
120
Position ........................................................................................... Off
(207 bar) (3000 psi) and
2000 10 rpm
HP Mode Switch--Specification
Position ........................................................................................... Off
Auto-Idle Switch--Specification
Position ........................................................................................... Off
TX,9025,GG2662 1908JUN985/5
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