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HYDRAULIC PUMP FLOW TEST - Continued
HYDRAULIC PUMP FLOW TEST - Continued

Maintenance Manual For Hydraulic Excavator Model 230Lcr
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TM 5-3805-280-24-1
Tests
9025
25
119
M--JT03410 90 Flange
A--Pilot Pressure Inlet
E--Pump Control Valve
H--TH108325 Elbow
Line
Pilot Lines
I--Return Manifold
Fitting
B--202862 Tee (2 used)
F--Front and Rear Pump
J--Bulkhead
C--JT05484 Cap
Regulator Valves
K--Front Pump Outlet Port
D--Test Port
G--TH108328 Adapter
L--Rear Pump Outlet Port
3. Connect the flow meter using 90 flange fitting (M).
To monitor pump delivery pressure, use the
pressure gauge on flow meter, or install adapters
If available, connect a flow meter to front (K) and
(G) and gauges to test ports (D) in pump housing,
rear (L) pumps.
or use the laptop computer.
Connect the return hose from flow meter to the
4. Disconnect pilot pressure inlet line (A) at pilot filter.
return manifold (I). Install plates, from the split
Install tees (B). Connect pilot pressure inlet line to
flange connector plate kit, on end of hoses to
tee.
control valve.
Continued on next page
TX,9025,GG2662
1908JUN984/5
6-250


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