TM 5-3825-226-24
WATER PUMP SPEED VALVE
8. Valve spool. 9. Outlet (to the tank). 10. Inlet
from pump. 11. Outlet (to hydraulic motor). H.
HIGH SPEED position. L. LOW SPEED position.
When a water distributor is used with the tractor, the
water pump speed valve will be locked in the HI
position. Valve spool (8) will be in HIGH SPEED
position (H). Pump oil through inlet (10) goes through
outlet (11) to an oil line from the other pump section.
The oil from both pump sections goes to the pump
motor which runs the pump at high rpm.
CYLINDERS CONTROL VALVE
This valve controls cylinders on the machine hitched
to the tractor. When the water distributor is used, the
valve's only function is to control the distributor's lift
cylinders.
CYLINDERS CONTROL VALVE
1. Relief valve. 2. Line (to head ends of lift
cylinders). 3. Inlet (pump). 4. Line (to rod ends of
lift cylinders).
CYLINDERS CONTROL VALVE
1. Relief valve. 2. Opening (to head ends of lift
cylinders). 3. Inlet (from pump). 4. Opening (to
rod ends of lift cylinders). 5. Hole (to passage In
valve stem). 6. Bowl valve spool. 7. Hole (to
passage In valve stem). 8. Passage (from vent line
for carry check valves). 9. Hole (to passage in valve
stem). 10. Opening (to ejector and door cylinder).
11. Outlet (to tank). 12. Opening (to ejector and
door cylinder). 13. Ejector valve spool. 14. Ejector
kickout valve. A. UP position. B. HOLD position.
C. DOWN position D. EJECT (Open) position. E.
HOLD position. F. RETURN (Close) position.
The flexible cable from the control lever, for lift
cylinder DOWN or UP, connects to the valve spool in
the control valve. Relief valve (1), in the control valve,
is in the oil circuit from the pump to the lift cylinders.
When the lift cylinder lever is in the HOLD position,
bowl valve spool (6) is in HOLD position (B). The oil
from the pump goes through the control valve, through
outlet (12) and to the tank.
Move the lift lever to the DOWN position and it
moves bowl valve spool (6) to DOWN position (C).
Now, the oil from the pump goes out opening (2) to the
head ends of the lift cylinders. The pump oil in the head
ends pushes the pistons and rods, connected to the
water distributor, and the water distributor goes down.
CARRY CHECK VALVE
15. Fitting (for vent line to control valve). 16. Oil
line opening in valve body.
5-7
