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Page Title:
TRI-MAX LIFT CYLINDERS (CLUSTER TYPE) REMOVAL |
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 TM 10-3930-644-14&P
C.
TRI-MAX LIFT CYLINDERS (CLUSTER TYPE)
D. TRI-MAX AND HIGH-FREE LIFT (CLUSTER TYPE)
REMOVAL
DISASSEMBLY AND INSPECTION
1. Disconnect the lift chains from adjusting screws
1. Remove the gland nut from the tube of cylinder
on the cylinder cluster.
with a spanner wrench, then remove the wiper
ring, back-up ring, "O" ring, packing and nylon
2. With cylinders completely collapsed, disconnect
pallets from the gland nut.
the hydraulic line between the cluster cylinder
and the single cylinder.
2. Remove the STOP RING from the tube, if
applicable. (Note: Stop ring not used on all
3. Remove the screw and nut which secure the
clusters and single cylinders.)
cylinder cluster to the inner and intermediate
masts.
3. Carefully slide the ram from the tube and
remove the wear ring from the ram.
4. Carefully lift cylinder cluster from the mast
assembly. Remove the crosshead assemblies
CAUTION
and ram guards from the outer cylinder rams.
Always use care when handling the
ram assembly so that it will not be
5. To remove the single lilt cylinder. remove the
nicked or damaged.
fittings, clamps and the flow regulator from the
cylinder.
4. Clean all metal parts with an acceptable solvent.
Inspect parts for wear or damage.
6. Remove the clamp securing the lift cylinder to
the intermediate mast. Remove the screw and
5. Remove any nicks and scratches with fine
washer securing cylinder to bracket at top of
emery paper or honing stone; replace all
intermediate mast. Remove nut and washer
unserviceable parts.
securing cylinder to bottom of outer mast.
NOTE
7. Remove the single cylinder from the mast and
Always replace all packing sets, "O"
place it on appropriate supports to prevent its
rings, back-up rings, and wiper rings,
rolling during inspection and repair work.
regardless of their condition.
Be
certain shell is clean and free of
foreign matter.
NOTE
Disassemble and repair remaining
cylinders in same manner.
6. The single cylinder of the Tri-Max cluster
arrangement is serviced in the identical manner
as the cluster cylinder.
3-193
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