Remote Valve Problems And Where To Look - New Holland T8010 Manual

REMOTE VALVE PROBLEMS AND WHERE TO LOOK

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1. PROPORTIONAL SOLENOID VALVE ASSEMBLY
2. MAIN VALVE SPOOL
3. FLOW CONTROL SPRING
4. RETRACT PORT
5. LOAD CHECK PLUNGER
6. EXTEND PORT
7. LOAD CHECK
NOTE: Signal checks added to cross-section for location purposes.
Pressure Compensated Flow
Control Spool
- Should the spool be stuck in a position that still
allows it to direct oil to the main spool, but cannot
balance, the flow rates will vary with changing load
pressures.
Section 35 - Hydraulic Systems, 3PT - Chapter 5
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8. EXTEND
9. PROPORTIONAL SOLENOID VALVE ASSEMBLY
10. SIGNAL CHECK TO PILOT RELIEF
11. SIGNAL CHECK TO PUMP COMPENSATOR
12. PFC PUMP SUPPLY
13. PRESSURE COMPENSATED FLOW CONTROL SPOOL
14. RETRACT
Flow Control Spring
If the flow control spring is broken, the flow rate range
(normally 2 to 33 GPM) will be greatly reduced and
erratic. Set the flow control pot to the maximum
setting at 2000 engine RPM and a 500 PSI load. If
approximately 33 GPM (125 L/min) is not reached
the flow control spring could be broken. (Note this
assumes that the maximum 33 GPM (125 L/min) can
be achieved on another remote section).
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