Troubleshooting Guide - RHINO BOOM ARM MOWER DB150 Operator's Manual

Boom arm mower
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13.TROUBLESHOOTING GUIDE

Problem
Boom Breaks Back
Too Easily
Boom Drops When
Two Functions
Actuated
Boom Moves on Its
Own (Under Power w/
no function actuated)
Electronic Joystick
Models
Boom Moves on Its
Own (Under Power w/
no function actuated)
Mechanical Joysticks
with Cables
DB150 07/11
© 2011 Alamo Group Inc.
OPERATION
Possible Cause
Work Port Relief Malfunction
or Failure
Swing Cylinder Failure
Cutting head "Plowing" in
Ground
Operator Travelling Too Fast
Low Oil Level on Boom
Function System
Failed One way Flow
Restrictor in valve
Defective or damaged
Controller
Incorrect Hose Size to
Cylinder(s)
Defective or Damaged
Joystick Controller
Improper adjustment of
Joystick potentiometer gear
timing
Solenoid Valves stuck due
to contamination
Failed O-ring on Solenoid
Valves
C.A.N. System Improperly
Adjusted
Valve Main Spool Bent or
Stuck
Improper Wiring
Defective or Damaged
Control Module(s)
Defective or Damaged
Joystick
Cables Sticking
Bent too sharply
Overheated due to contact
with hydraulic components
Connection at valve
damaged or failed
Main Spool in Valve Stuck or
bent
Operation Section 4-39
Remedy
Test to confirm, Adjust or Replace as needed
Test to Confirm, Rebuild or replace as needed
Operator Error, Operator Training
Operator Error, Operator Training
Fill oil and bleed system of air
(Gravity Aided Functions Only) Confirm and
replace
Repair or Replace as needed
Replace with proper OEM part
Repair or Replace as required.
Adjust to locate proper neutral setting per the
Service Manual
Repair or replace as required. Flush and fill
Hydraulic System
Replace the O-ring with proper replacement
parts
Consult a Factory Trained Service Technician
to facilitate the proper adjustment of the system
Replace the Valve Section
Confirm and Repair
Replace the module(s)
Repair or replace as required
Install new cable and route to provide adequate
bend radius
Replace Cables and insulate from Hydraulic
Components
Repair or replace as required
Repair or replace as required

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