Alamo MACHETE Product Service Manual page 166

POSSIBLE FAILURE / CAUSE & SOLUTION
Motor Over Heating:
CAUSE:
SOLUTION:
CAUSE:
SOLUTION:
CAUSE:
SOLUTION:
CAUSE:
SOLUTION:
CAUSE:
SOLUTION:
Machete (Service Manual) 04/04
© 2004 Alamo Group Inc.
Air in Oil?
Run the System for a few minutes. Check for Air in the Oil in the Tank. Air
entrained Oil will have a foamy appearance. If Air is present, find the Air Leak
and correct it. Air Leak can be in the Suction Line and Oil may not leak out
because there may only be Oil in that location when the Pump is sucking it in.
With the Tractor Engine Off you can find a leak by pressurizing the Tank, This
will not take but a few pounds of pressure (10 PSI or Less) look for leakage in
the Suction Lines, Because the Oil Pick-Up is lower than the Oil Level this will
force Oil out the leak. Leaks in Hoses and at Fittings can draw Air into System
as Oil Flows Past. Systems that have had severe or prolonged Air Entry
Problems may have Experienced Pump Damage.
Engine RPM Too High?
Run Tractor Engine at required Speed to achieve GPM through Pump, See
Specification Section in Repair Manual.
Excessive Ground Speed for Mowing Conditions? (Operational Prob-
lem)
This will usually also have a Heating Problem if continuing to mow. Observe
(or Ask Operator) mowing conditions, Material being Cut etc. Correct Ground
Speed is always relative to Material and conditions of mowing. One indication
of Excessive Ground Speed is considerable wear on tips of blades but this is
not exclusive of Excessive Ground Speed as the Wear can be caused by other
factors. So Blade Wear alone is not definite Travel Speed problem. The Cut is
Choppy and uneven, the material is coming from under deck in Lumps instead
of being distributed across width of Deck. These conditions can force the Oil to
go over relief because of excessive Load on Motor. A Change of Ground Speed
and/or material being cut by unit will cure this problem.
Excessive Ground Contact with Blades? (Operational Problem)
Inspect Blades, Blade Carrier and Blade Bolts for wear, Excessive wear could
indicate frequent contact with the ground, Check cutting Height of Blades above
Skid Shoes, Check for proper Blades and Skid Shoe condition, Repair or
Replace as required.
Incorrect Oil Installed?
Incorrect Oil installed may produce internal wear, which will overheat the motor.
Use only the recommended Oil for the model being used. See Specification
Chart for correct Oil type. Do not mix Oil Types as the may not be compatible,
if types of Oil are being changed over, completely change the Oil, Drain and
flush the system before installing the new Oil.
(Continued)
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