Ultra Mount

Ultra Mount
WESTERN PRODUCTS, P.O. BOX 245038, MILWAUKEE, WI 53224-9538
LIT. NO. 67791 - Troubleshooting Guide
September 1, 2001
UltraMount® OWNER’S MANUAL
Troubleshooting Guide Only
WESTERN®
Snowplows
A DIVISION OF DOUGLAS DYNAMICS, L.L.C
CONDITION
POSSIBLE CAUSE
2. No ground to the motor relay.
3. Motor relay does not operate.
4. Poor connections on snowplow
battery cables.
5. Motor is worn or damaged.
6. Pump is seized.
1. Repair or replace wiring, cab
control or harness fuse.
2. Repair wiring or connections.
3. Replace motor relay.
4. Clean and verify cable
connections.
5. Repair or replace motor.
6. Replace pump.
1.
2.
3.
4.
1.
2.
3.
4.
1. No power to the motor relay.
Motor does not run.
Motor will not shut off.
Motor relay is shorted.
Vehicle wiring has a short.
Cab control is malfunctioning.
Open ground circuit.
1. There is excess weight on the
A-frame and quadrant.
2. Hydraulic fluid type or level is
incorrect.
3. Pump filter is clogged.
Motor operates properly, but
plow raises slowly, partially,
not at all, and/or angles
instead.
4. Pump relief pressure is low.
5. Pump and/or pump O-ring are
damaged.
6. Motor rpm is low.
7. Vehicle battery is weak.
8. Cartridge valve coils are not
activating properly.
9. Cartridge valves are
contaminated or are sticking.
10. Cartridge valves are damaged.
Snowplow will not stay in
RAISED position or lowers by
itself.
Snowplow will not lower,
lowers slowly, or will not float.
CORRECTION
1. Cartridge valves are
contaminated or are sticking.
2. Cartridge valves are damaged.
3. There are shorts or open
connections in the wiring.
1. Incorrect hydraulic fluid for the
temperature.
2. Quill is adjusted in too far.
3. Cartridge valve coils are not
activating properly.
4. Cartridge valves are
contaminated and are sticking.
5. Cartridge valves are damaged.
Replace motor relay.
Repair the wiring.
Repair or replace cab control.
Repair ground.
1. Remove built-up snow and ice or
after-market accessories (excess
weight).
2. Fill with recommended fluid.
3. Clean or replace filter and flush
and refill the system.
4. Adjust the pump relief screw.
5. Replace pump and/or pump
O-ring.
6. Repair motor, electrical
connections, or wiring.
7. Replace battery and check
charging system.
8. Repair or replace coils, wiring, or
cab control.
9. Clean or replace valve. Find the
cause of contamination. Flush
and refill system.
10. Replace cartridge valves.
1. Clean or replace valves. Find the
cause of contamination. Flush
and refill system.
2. Replace cartridge valves.
3. Repair wiring.
1. Use recommended oil.
2. Turn quill out.
3. Repair or replace coils, wiring or
cab control.
4. Clean or replace valves. Find the
cause of contamination. Flush
and refill system.
5. Replace cartridge valves.
CONDITION
POSSIBLE CAUSE
1. Incorrect hydraulic fluid for the
temperature.
2. There is binding between A-frame
and quadrant.
3. Pump filter is clogged.
Motor operates properly, but
blade will not angle or angles
slowly.
4. Pump relief pressure is low.
5. Pump and/or pump O-ring are
damaged.
6. Motor rpm is low.
7. Cartridge valve coils are not
activating properly.
8. Cartridge valves are
contaminated and are sticking.
Motor operates properly, but
plow angles wrong way, one
way only, or raises instead.
Blade will not hold side-toside position.
1. Use recommended oil.
2. Repair or replace damaged parts.
3. Clean or replace filter and flush
and refill the system.
4. Adjust the pump relief screw.
5. Replace pump and/or pump
O-ring.
6. Repair motor, electrical
connections, or wiring.
7. Repair or replace coils, wiring, or
cab control.
8. Clean or replace valves. Find the
cause of contamination. Flush
and refill system.
1. Angle cylinder hoses are
reversed.
2. Cartridge valve coils are not
activating properly.
3. Cartridge valves are
contaminated and are sticking.
1. Correct hose installation.
1. Spool poppet valve is worn,
damaged, or contaminated.
1. Clean or replace worn or
damaged parts. Find the cause of
contamination. Flush and refill
system.
2. Clean and adjust cushion valves.
Find cause of contamination.
Flush and refill system.
3. Replace damaged or missing
parts, or adjust cushion valves.
2. Cushion valves are contaminated.
3. Cushion valves are damaged,
missing parts, or out of
adjustment.
Oil leaks from hydraulic
power unit.
CORRECTION
1. There is external damage to
reservoir.
2. There are loose O-ring plugs or
fittings.
3. Pump shaft seal is damaged.
2. Repair or replace coils, wiring, or
cab control.
3. Clean or replace valves. Find the
cause of contamination. Flush
and refill system.
1. Repair or replace reservoir.
2. Tighten O-ring plugs or fittings.
3. Replace pump shaft seal.
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