Snow Plow Diagnosis - Dodge D150 1990 Service Manual

1 - 8 ACCESSORIES
SNOW PLOW DIAGNOSIS
Condition Possible Cause
Correction
PLOW BLADE WILL NOT LIFT OR
LIFTS SLOWLY
PLOW BLADE WILL NOT ANGLE RIGHT-
MOTOR IS OPERATIONAL
PLOW BLADE WILL NOT ANGLE LEFT-
MOTOR IS OPERATIONAL
PLOW BLADE WILL NOT ANGLE-
MOTOR IS OPERATIONAL
PLOW WILL NOT REMAIN IN
ANGLED POSITION
MOTOR DOES NOT OPERATE
PLOW BLADE WILL NOT LOWER
PLOW BLADE CREEPS DOWNWARD
PLOW BLADE WILL NOT
CLEAN SURFACE
BLADE WILL NOT FOLLOW
SURFACE DEVIATIONS
SNOW STICKS TO FACE
OF BLADE
(a) Low hydraulic fluid level.
(b) Discharged battery.
(c) Leaking or open "A" cartridge.
(d) No voltage at "B" coil.
(e) Inoperative "B" coil.
(f) Malfunctioning motor.
(g) Malfunctioning pump.
(a) Improper coupler engagement.
(b) Mechanical bind or interference.
(c) Malfunctioning coupler.
(d) No voltage at "C" coil.
(e) Inoperative "C" coil.
(f) Inoperative "C" cartridge.
(a) Improper coupler engagement.
(b) Mechanical bind or interference.
(c) Malfunctioning coupler.
(d) Leaking or open crossover relief
valve.
(a) Improper coupler engagement.
(b) Mechanical bind or interference.
(c) Leaking or open crossover relief
valve.
(a) Air in cylinders and hoses.
(b) Leaking "C" cartridge O-ring seals,
c) Leaking or open pilot check valve.
(d) Leaking crossover relief valve.
(e) Crossover relief valve opening
pressure too low.
va) Discharged or defective battery.
(b) Loose or corroded electrical
connections.
(c) Inoperative solenoid switch.
(d) Malfunctioning control switch.
(e) Malfunctioning motor.
(a) No voltage at "A" coil.
(b) "A" cartridge jammed in closed
position.
(c) Inoperative "A" coil.
(a) Leaking "A" cartridge.
(b) Leaking "A" cartridge O-ring seal.
(c) Leaking B-Check Valve.
(d) Leaking Ram Packing Cup.
(e) Leaking O-ring seal at bottom of
cylinder.
(a) Runner height incorrect.
(b) Cutting edge unevenly worn.
(a) Not in "Lower Float Position".
(b) Insufficient slack in lift chain.
(a) Sno-Flo paint worn off.
(a) Add fluid to proper level.
(b) Recharge battery.
(c) Clean or replace "A" cartridge.
(d) Locate malfunction and repair.
(e) Replace "B" coil.
(f) Repair or replace motor.
(g) Replace pump.
(a) Engage coupler properly.
(b) Eliminate mechanical bind or
interference.
(c) Repair or replace coupler.
(d) Locate malfunction and repair.
(e) Replace "C" coil.
(f) Clean or replace "C" cartridge.
(a) Engage coupler properly.
(b) Eliminate mechanical bind or
interference.
(c) Repair or replace coupler.
(d) Clean or replace crossover relief
valve.
(a) Engage coupler properly.
(b) Eliminate mechanical bind or
interference.
(c) Clean or replace crossover relief
valve.
(a) Purge cylinders and hoses.
(b) Replace O-ring seals.
(c) Clean or replace pilot check valve.
(d) Clean or replace crossover relief
valve.
e) Replace crossover relief valve.
^a) Recharge or replace battery.
(b) Clean and tighten electrical
connections.
(c) Replace solenoid switch.
(d) Replace control switch.
(e) Repair or replace motor.
(a) Locate malfunction and repair.
(b) Clean or replace "A" cartridge.
c) Replace "A" coil.
(a) Clean or replace "A" cartridge.
(b) Replace O-ring seal.
(c) Clean or replace Pump Check Valve.
(d) Replace Ram Packing Cup.
(e) Replace O-ring seal.
(a) Adjust runners.
(b) Replace.
(a) Position switch at "Lower Float"
(b) Adjust lift chain.
(a) Refinish.
J9001-3