Cub Cadet I-Beam Style - Manual (Page 202)

6-7
6
3. The original factory setting for the unloading
valve is designed to provide maximum flow
while remaining below engine stalling load.
NOTE
Splitting capability is not affected by the set-
ting of the unloading valve. Do not attempt to
adjust or reset it without a pressure gauge
(should be performed by an authorized ser-
vice dealer only).
6-2.3 The Model 632 log splitter is hydraulically pow-
ered and comprises a pump, 4-way 3-position
directional valve, ram cylinder for operating a
splitting wedge and an oil reservoir. Operation
is as follows:
1. At the neutral position this valve directs the
flow back to the oil reservoir bypassing the cyl-
inder.
2. When the directional valve is directing the flow
to the back of the cylinder, the cylinder rod
extends quickly until it meets significant resis-
tance. Upon reaching unloading pressure,
movement of the shaft will slow but will con-
tinue forward.
CAUTION
Never operate at relief valve pressure for more
than a few seconds.
3. If the pressure reaches a preset maximum
(called relief valve pressure) the relief valve,
located within the directional valve, will allow
the flow to bypass the cylinder and return to
the reservoir. This can happen when the cylin-
der rod meets excessive resistance, or when it
reaches the end of its stroke and can move no
farther.
4. When the directional valve is directing the flow
to the front of the cylinder, the rod will retract
quickly since it is encountering no resistance.
The relief valve will momentarily bypass the
flow at the end of the return stroke but the
directional valve should then automatically
return to the neutral position, directing the flow
directly into the reservoir. This serves to pro-
tect the pump from possible damage due to
prolonged operation at relief valve pressure.
See Figure 6-5.
Log Splitters 2.fm Page 7 Wednesday, February 20, 2002 1:35 PM