Alamo MACHETE Product Service Manual page 159

POSSIBLE FAILURE / CAUSE & SOLUTION
Cylinder Rod Bent:
CAUSE:
Excessive Load Applied to Cylinder?
SOLUTION:
This is an Operational Problem or Operational Accident. The Mode of failure would
be that an excessive load was applied while the Control Valve Spool was in "Hold"
and there was no Work Port Relief in circuit (or it was malfunctioning). Corrective
action is to counsel the operator to avoid conditions that resulted in bending. repair
or replace Cylinder and any other damaged component. A good example would be
using Tractor Wheel Power to put pressure against boom and Valve closed so
Cylinder can not give (Exceeding Break-A-Way).
CAUSE:
Misalignment of Cylinder Lugs?
SOLUTION:
make sure something has not been bent, Frame, Lugs and etc. Align Cylinder Lugs
(may require cutting and Welding) or replace faulty Parts as needed. Mis-Alignment
of Lugs place a side load on Rods that can cause them to bend. Usually this
alignment is noticeable.
CAUSE:
Work Port Relief Malfunction?
SOLUTION:
Check relief Pressure of Valves that are in the affected circuit. Adjust or replace
them as needed to bring them to specification (See Repair Manual). Do not operate
with Relief Setting incorrect, this will cause damage. Also check to make sure that
Port Relief's are installed correctly and in the proper places.
CAUSE:
Interference with Another Part of Component?
SOLUTION:
Repair or Replace the damaged cylinder. Slowly actuate the Implement throughout
its full range of motion, utilizing all possible Cylinders. Observe for interference with
any other Part. Correct cause of interference as needed.
Cylinder Rod Came Out of Cylinder:
CAUSE:
Piston Nut Backed Off of Rod?
SOLUTION:
Replace damaged Parts and Assemble. Make sure Piston Nut is Correct and
Properly Torqued. This problem is usually caused by improper assembly (Nut Not
Torqued) but can also be caused by a faulty Nut and/or Rod threads, This failure
would show Rod Threads that are damaged most likely. Some times Threads will
show damage from Piston working on Rod because it has been operated while Nut
was loose.
CAUSE:
Wrong Nut On Rod?
SOLUTION:
Replace with correct Piston Nut, Check Piston Nut that it is not too Thin, Wrong
Threads or Insufficient Thread engagement on Rod.
Machete (Service Manual) 04/04
© 2004 Alamo Group Inc.
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