Boss Snowplow RT3 EXT Installation Instructions Manual page 24

Problem
The plow does not raise or raises slowly.
The plow angles while plowing.
The plow does not angle or angles slowly.
Fluid leaks from the lift cylinders.
The vehicle battery dies when the vehicle
is turned off.
The vehicle battery dies when all of the
switches are in the Neutral position.
Possible Cause
1. The hydraulic-fluid level is low.
2. The power/ground cables or the control
cable are not connected.
3. The wiring on the valve block is not
connected.
4. The battery is weak or needs replacing.
5. The motor brushes are bad.
6. The pump pressure relief valve is
set to less than 172 bar (2,500 psi),
contaminated, or damaged.
7. The pump is worn
8. The Raise control solenoid valve is not
opening completely.
9. The Lower control solenoid valve is
stuck open.
1. The A control solenoid valve is
NGLE
contaminated or damaged.
2. The pressure relief valve is
contaminated or damaged.
3. The pressure relief valve is set
incorrectly.
1. The hydraulic-fluid level is incorrect.
2. The power/ground cables and/or the
control cables are not connected
properly.
3. The wiring connections on the valve
block are not connected properly.
4. The battery is damaged or depleted.
5. The A control solenoid valve does
NGLE
not open completely.
1. The fittings are loose or the O-rings
are damaged.
2. The rods are pitted or rough.
1. The wire harness isn't connected to a
keyed fuse source.
1. There is a short in the controller wiring.
2. There is a short in the wire harness.
3. There is a short in the valve coils.
24
Corrective Action
1. Check the hydraulic-fluid level; refer
to the Checking the Hydraulic Fluid
section.
2. Connect the cables.
3. Refer to the wiring schematic.
4. Load a test battery and replace it if
necessary.
5. Check the motor brushes and replace
them if necessary.
6. Ensure that the pressure is set to 172
bar (2,500 psi). Check the pressure
again. If it is less than 172 bar (2,500
psi) at the end of the lift, clean or
replace the pressure relief valve.
7. Replace the pump.
8. Replace the valve.
9. Replace the valve.
1. Clean or replace the A
NGLE
solenoid valve.
2. Clean or replace the pressure relief
valve.
3. Contact your authorized BOSS dealer.
1. Ensure that the hydraulic-fluid level
should is within 2 cm (3/4 inch) of the
top of the reservoir when the plow is
lowered.
2. Connect the cables if they are not
connected.
3. Refer to the manifold wiring schematic
included with your Owner's Manual.
4. Load a test battery and replace it if
necessary.
5. Replace the A control solenoid
NGLE
valve.
1. Tighten loose fittings. See your
authorized BOSS dealer for a seal kit.
2. Polish them with a copus cloth or extra
fine steel wool.
1. Connect the wire harness to a
keyed fuse source; refer to the wire
schematic.
1. Repair or replace the controller.
2. Repair or replace the wire harness.
3. Replace the valve coils.
control