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OPERATION
DB150 07/11 Operation Section 4-43
© 2011 Alamo Group Inc.
OPERATION
Problem Possible Cause Remedy
Motor Inoperative
(Won't Run)
Low Oil level or No Oil Fill or replace as required
Improper Oil Used flush and replace the oil
Solenoid valve Failure or
O-ring Failure at the
Solenoid Valve
Remove the solenoid valve and inspect.
Replace as required
No voltage to Solenoid
Valve
Check harness connections, fuses and wires
Incorrect Wiring at
Solenoid valve
Wrong plug installed (Maverick and Machete).
Timbercat harness plug used in place of Other
mower plug. Reconnect with proper plug
Spindle Locked up Check by spinning blades. See Section on
spindle failures
Motor Overheating
Oil Level Too Low Fill or replace as required
Incorrect Oil Used Flush and fill as required
A
ir in Oil Locate the source and repair. Flush and fill the
oil as required
Engine RPM too high Tractor must be operated at the 540PTO speed
as indicated on the tachometer
Excessive ground speed
for mowing conditions
Operator abuse
Excessive ground contact
with blades
Operator abuse
Internal leakage in pump
or motor
Test to confirm. Repair or replace as required
Relief valve malfunction Test relief valve setting. Adjust or replace as
required
Restrictions in the system Identified by concentration of heat, due to Line
restriction bent hoses or contamination.
Motor Shaft Seal
Leaking
Excessive Back Pressure
on return side of the
motor.
Due to bent fittings or crimped hoses. Inspect
the system and repair as required
Incorrect oil used Replace with correct oil.. Flush and fill
Shaft Seal worn Due to heat from the spindle or failure of
spindle components. Check spindle section
Failed Seal Retainer Manufacturing defect. Consult customer
service for proper repair or replacement
Defective Motor Flange
casting
Manufacturing defect. Consult customer
service for proper repair or replacement