Buhler Commercial Snowblower User Manual
Page 33
Commercial Snowblower
32
TROUBLESHOOTING
SYMPTOM
PROBABLE CAUSE
REMEDY
D1 Nothing Works
Hydraulic Circuit Not Complete
1. Hydraulic Valve not engaged
1. Engage valve to full detent
2. 1 or more quick couplers not
2. Fully engage all couplers
completely engaged.
3. Defective quick coupler
3. Replace defective quick couplers
4. Hydraulic pump low on fluid
4. Top up fluid level
D2 Auger Rotates
Hydraulic Circuit Reversed
backwards, and
1. Main valve is in reverse
1. Reverse valve direction or
fan does not
2. Quick couplers are connected
2. Switch hose connections to
rotate
backwards.
the machine.
D3 Fan turns too
1. Inadequate hydraulic flow for
1. Check the gpm of your
slow
this motor size.
system.
2. Wrong motor for your system.
2. Contact your dealer.
D4 Fan motor stalls
Valve #4 (Fig. 1) set too high
See MODULATING
ELEMENT SET UP
D5 Auger motor
Valve #4 (Fig. 1) set too low
See MODULATING
slows or stalls
ELEMENT SET UP
too quickly
D6 Fan & Auger work
Electrical Problem
but chute controls 1. Electrical connections to battery
1. Ensure that the clamps are
do not work
making proper connection.
properly
2. Breaker is tripped.
2. Reset breaker.
3. Connector from Sw to block not
3. Ensure the connector is
contacting.
fully engaged. Check for
broken wires.
4. Connection to No-Load Valve #6
4. Check all items in D6
(Fig. #1) is not making
5. Diodes in switchbox are defective.
5. Check for voltage through diodes
6. Solenoid Valve Spool is stuck
6. Replace #8a or 8b solenoid
cartridge.
D7 Chute controls do 1. The No-Load pressurizing valve
1. Back of the adjuster-screw
not work properly
#14a (Fig. #1) set too low.
till it rotates freely by hand. Then
in no-load
turn in till you feel it contacting the
conditions.
spring. Then turn in 2 turns.
2. Electrical: Switch, harness,
2. Check the No-Load Circuit
connectors, coil 10a, diodes
#5 in Fig. #2
3. Polarity of the system is reversed.
3. Red Alligator clip must be
on the Positive Terminal
4. Diodes in switchbox defective.
4. Replace defective diodes.
5. Defective Coil #10a (Fig. #1)
5. Replace Coil.
6. Defective Valve #6 (Fig. #1)
6. Replace Valve.
D8 Chute Rotation
1. See D7-1
1. Same as D7-1.
seems to lack
2. Valve #14b or #14c set too low.
2. Back of the adjuster-screw
power to turn.
till it rotates freely by hand
then turn in till you feel it
contacting the spring. Then
turn in 2 turns.