Buhler FK348 - Manual (Page 16)

Commercial Snowblower
13
OPERATING INSTRUCTIONS
1. HYDRAULIC DRIVE: All snowblower hydraulic blocks are set at the factory for a
2800 - 3000 psi system. Refer to the section on the hydraulic control block if
| your system does not fall into this range.
2. ALL: Depth of the cut can be partially controlled by tilting the Snowblower
forward or backward.
66” ONLY: Depth of cut can be controlled by bolting the skid shoe in one of the
following positions.
3. PTO DRIVE: Adjust the top link of the tractor hitch so the snowblower is just
slightly tilted back when resting on the ground.
CAUTION: Excessive
backward tilt may cause the “U” joints to flutter resulting in PTO shear bolt failure.
4. PTO DRIVE: The inside holes on the hitch are spaced to fit a category 2 quick
hitch using the pins supplied. The hitch will also fit category 2 three point arms or
category 3 if you add bushings.
5. PTO DRIVE: Adjust the lower link sway chains or blocks on the tractor to restrict
movement of the blower when operating.
6. ALL: All snowblowers have a hydraulic control spout and spout deflector. Refer
to the hydraulic control block section. The pressure to the chute control is
regulated by the two torque limit controls (#13b and #13c). Each controls the
hydraulic pressure in one direction. They are set at the factory to about 2 ½
turns. If the pressure is too low, the chute won’t turn. If the pressure is too high
you could damage the teeth on the spout control ring. To adjust the pressure,
you loosen the lock nut on the modulating valve and back off the adjusting screw
till the screw turns freely by hand. Turn the screw in till you feel it making contact
and turn in 2 ½ turns. Start with this setting to do any fine adjustment if
necessary. Pressure should not go over 1000 psi.
The deflector cylinder pressure is regulated by no-load control (#13a). It is set at
the factory to about 2 turns. If pressure is too low it will not operate. Excess heat
will be generated if it is set too high. Adjust if necessary as per previous
paragraph. Operating pressure should be about 700 psi.