Alamo BUSH HOG RMB 1660 Operator's Manual page 171

Problem
Motor Inoperative
(Won't Run)
Motor Overheating
Motor Shaft Seal
Leaking
RMB 1660 01/22
© 2022 Alamo Group Inc.
OPERATION
Possible Cause
Low Oil level or No Oil
Improper Oil Used
Solenoid valve Failure or
O-ring Failure at the
Solenoid Valve
No voltage to Solenoid
Valve
Incorrect Wiring at
Solenoid valve
Spindle Locked up
Oil Level Too Low
Incorrect Oil Used
Air in Oil
Engine RPM too high
Excessive ground speed
for mowing conditions
Excessive ground contact
with blades
Internal leakage in pump
or motor
Relief valve malfunction
Restrictions in the system
Excessive Back Pressure
on return side of the
motor.
Incorrect oil used
Shaft Seal worn
Failed Seal Retainer
Defective Motor Flange
casting
Operation Section 4-49
Remedy
Fill or replace as required
flush and replace the oil
Remove the solenoid valve and inspect.
Replace as required
Check harness connections, fuses and wires
Wrong plug installed (Maverick and Machete).
Timbercat harness plug used in place of Other
mower plug. Reconnect with proper plug
Check by spinning blades. See Section on
spindle failures
Fill or replace as required
Flush and fill as required
Locate the source and repair. Flush and fill the
oil as required
Tractor must be operated at the 540PTO speed
as indicated on the tachometer
Operator abuse
Operator abuse
Test to confirm. Repair or replace as required
Test relief valve setting. Adjust or replace as
required
Identified by concentration of heat, due to Line
restriction bent hoses or contamination.
Due to bent fittings or crimped hoses. Inspect
the system and repair as required
Replace with correct oil.. Flush and fill
Due to heat from the spindle or failure of
spindle components. Check spindle section
Manufacturing defect. Consult customer
service for proper repair or replacement
Manufacturing defect. Consult customer
service for proper repair or replacement