Snorkel TB125J Repair Parts Manual page 369

Maintenance information
The parts drawings located in the repair parts sections,
are designed for use as a guide for proper disassembly
of the machine and components as well as for parts re-
placement. Always refer to the hydraulic system installa-
tion drawings and the electrical wiring diagram before
removing or disassembling associated parts.
CAUTION
Do not attempt to disconnect or remove any hydrau-
lic line before reading and understanding all text
concerning the system hydraulics. In most cases,
disassembly of the machine will be obvious from the
illustration.
When disassembling or reassembling components,
complete the procedural steps in sequence. Do not par-
tially disassemble or assemble one part, then start on
another. Always check your work to assure that nothing
has been overlooked.
The following list is a gentle reminder when disassem-
bling or assembling the machine.
ü
Always be conscious of weight.
ü
Never attempt to lift heavy objects without the aid of
a mechanical device.
ü
Do not allow heavy objects to rest in an unstable
condition.
ü
Always make sure work platform is in stowed
position - blocked or the weight removed by a
suitable lifting device before disconnecting the
hydraulic hose from the motor/pump unit to the lift
cylinder.
ü
When raising a portion of the machine, be sure that
adequate blocking is properly positioned - Do not
depend on lifting device to hold and secure weight.
ü
If a part resists removal, check to see if all
fasteners, electrical wiring, hydraulic lines, etc.,
have been removed or that other parts are not
interfering.
TB125
Maintenance and Schematics
Parts should be thoroughly inspected before restoring to
service at the time of reassembly. Burrs, nicks or
scratches may be removed from machined surfaces by
honing or polishing with #600 crocus cloth, followed by a
thorough cleaning in an approved cleaning solvent, and
blown dry with compressed air. Do not alter the contour
of any part. If this operation does not restore the part to a
serviceable condition, replace the part. Replace all
O-rings, seals, and gaskets at reassembly. Use new roll
pins or cotter pins. Dip all packing rings and seals in hy-
draulic oil before reassembling in cylinder and manifold
installations. Replace any part having imperfect threads.
In general, units that have been disassembled can be
reassembled by reversing the order of disassembly.
Remember that the service life of a machine can be in-
creased by keeping dirt and foreign materials out of the
vital components. Precautions have been taken to safe-
guard against this; shields, covers, seals and filters are
provided to keep air and oil supplies clean; however,
these items must be maintained on a scheduled basis in
order to function properly.
At any time air or oil lines are disconnected, clean sur-
rounding areas as well as the opening and fittings them-
selves. As soon as a line or component is disconnected,
cap or cover all openings to prevent the entry of dirt or
foreign materials.
New parts should remain in their container until they are
ready to be used.
Clearly mark or tag hydraulic lines and electrical wiring
connections when disconnecting or removing them from
unit. This will assure that they are correctly reinstalled.
Proper assembly is critical to the successful rebuilding
of any unit. Carefully inspect any parts which are to be
reused. If in doubt, replace.
"SAFETY FIRST" is a good slogan.
Replace any guards and protective devices that have
been removed to carry out maintenance and repair
work.
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