Alamo MACHETE Product Service Manual page 54

TROUBLE SHOOTING - BEGIN
MACHETE CONTROL VALVE
HYDRAULIC SYSTEM - POSITIONING - TEST PROCEDURES
NOTE:
The Machete is equipped with manual override controls for the Control Valve. In case of
Emergency Electrical failure or for testing purposes, The positioning Hydraulics can be operated
manually. Refer to Isolation Test 2 for instructions or review Control Valve Section.
IMPORTANT NOTE:
1. Repairing a failed Component is not always repairing the Cause of a failure,
When making repairs always check all associated components because one
component can be the cause of another component failure.
INFORMATION COLLECTION:
1. What is Model Unit, Size, Type Head, Type Tractor it is mounted on etc?
2. What is not working correctly? In as much detail as possible.
3. Has this malfunction existed for some time, just start suddenly, continuos
malfunction or off and on, when does malfunctions occur.
4. Did this malfunction result from an earlier malfunction? What if any repairs,
adjustment, modifications or any changes to any components have been made
to unit recently. (Repairs - Maintenance - Accidents - Operator Change)
5. Have all the obvious items been checked, Oil Levels (Tractor & Unit Reservoirs),
Electrical Supply (Dead Battery, Loose connections, etc.)
6. Does the malfunction affect all circuits, one, two or more?
7. Does malfunction affect both sides of the same function or just one (Example Lift
& Lower, in or out, etc)
8. Does malfunction happen when Cold or Hot, only Cold or only Hot, more when
Cold than Hot, more when Hot than Cold etc.
9. What Conditions? What is Unit doing when malfunction occurs, running at low?
RPM, High RPM, heavy Cutting, light Cutting, Level Ground, Slope Angle etc.
10. Any information that will help determine what may be causing the Malfunction or
to pin point the location of the malfunction.
VISUAL TEST:
1. Do Not Start Tractor till all visual inspections are done. Check All Fluid Levels
(Fluid Levels should be checked with oil warm and with all components filled
with Oil from operation), Remove any bolt on / Slip on Cover that prevent visual
inspection of general condition of components. Look for any Broken Compo-
nents, Missing Components, Loose Components, Oil Leaks, Damaged Com-
ponents. Look for any thing that is obvious to cause a problem.
2. Replace any missing / broken components, tighten any loose components,
repair any Oil Leaks before beginning any further test.
Machete (Service Manual) 04/04
© 2004 Alamo Group Inc.
Any information on Unit from operator will be helpful.
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