BARKO LOADERS 295, Service Manual

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page 41
295 AC
800-00158
HYDRAULIC COLLECTOR MAINTENANCE
All hydraulic components below the turntable bearing continue to be operable during rotation of the upper
assembly because of the hydraulic collector. Located on the rotating turntable assembly, the collector is so
designed as to allow the flow of hydraulic oil to the cylinders at all points in the turntable rotation. (On most
stationary electric machines, an electric collector is used.)
COLLECTOR SHOWN MAY NOT BE TYPE USED ON YOUR MACHINE BUT IS SHOWN AS A REFERENCE.
SAFETY WIRE
TORQUE ARM
TORQUE ARM
MOUNTING
PLATE
SEALS
SAFETY
WIRE
RETAINING
PLATE
SCREWS
BARREL
SPOOL
SERVICING
When seals inside collector wear out, a new seal kit must be purchased from your Barko dealer. (Seal kit numbers
are in parts manual on collector parts list.) Port numbers are stamped into collector for easy reference.
HYDRAULIC COLLECTOR SEAL KIT INSTRUCTIONS
DISASSEMBLY
- Remove safety wire and screws from spool retaining plate on top of collector.
- Remove spool from barrel using proper driving equipment, being careful not to damage seal lands or
polished inside diameter of barrel.
- Remove seals from spool by cutting with sharp knife, being careful not to damage spool lands. If teflon rings are
used, they must be cut off also and the expansion ring under the teflon ring should be replaced (the expansion
ring can be cut off or stretched).
CLEAN AND INSPECT
- Clean all components thoroughly.
- Inspect for damage to port threads, screw holes and threads, hole elongation, broken spool lands,etc..
Replace or repair damaged components as necessary.
- Barrel with grooves worn deeper than .007 is no longer safely usable.
- Below are four different collector sizes. Find yours, and be sure that the spool lands on your collector are not
worn deeper than .004 below the standard spool land depth given. Spool with lands worn deeper than .004 is
no longer safely usable.
(7" spool O.D. = 6.985 spool land depth) (5" spool O.D. = 4.985 spool land depth)
(6" spool O.D. = 5.985 spool land depth) (3-1/2" spool O.D. = 3.485 spool land depth)
- Seal grooves of .160 standard width worn beyond .185 at outside diameter are no longer safely usable.
- Grooves of .130 standard width beyond .150 at outside diameter are no longer safely usable.
- Loaded lip seal grooves of .275 standard width worn beyond .325 at outside diameter are no longer safely
usable.