SUTPHEN TOWERS, INC. 2012
Manual-2012
_SL75-SA75-SP70.docx
Page 35 of 55
8/31/2012
High Pressure Filtration System
SP70, SL75 and SA75 fitted with KFS4596 reservoir assembly:
The return filter is fitted with a by-pass indicator. Change this filter if the By-Pass indicator is
going into the red. This must be observed when the unit is in operation. With the unit fully set
up at high idle observe the by-pass indicator when running retract and lower at the same time
at high idle. This is the highest flow rate the filter will see. Otherwise change this filter after the
1st 50 hours of operation and 250 hours thereafter.
Replace with MP Filtri original equipment element # CSG100A06A. The KFS4596-C reservoir
assembly is fitted with a Dipstick. This reservoir is full with all stabilizers and the aerial stowed
at 2-3" from the top of the tank. Hydraulic fluid should be replaced every 500 hours of
operation or one year of operation, whichever comes first. Ensure the new hydraulic fluid is
filtered to ISO code 22/18/13. New oil from the refinery or oil distributor has not been filtered
to this ISO code, it is typically 24/22/20.
MAINTENANCE OF STRUCTURE
ALUMINUM TOWER STRUCTURE
The tower structure members are #6061-T6 aluminum alloy extrusion. This alloy is resistant to
corrosion and requires little maintenance. Periodic washing with clear water only is
recommended. Use mineral spirits for removal of tar, oil and smoke film. If a brighter
appearance is desired, use any quality automotive polish, a mag and aluminum wheel cleaner,
or a Scotch-brite pad.
Do not use any alkyline (base) polishes.
TURNTABLE ATTACHMENTS
The bolts attaching the turntable assembly to the rotation bearing are 5/8-11 NC X 2" long-
grade 8. They are special bolts with self-locking threads. Should replacement be necessary,
they must be replaced with an equivalent bolt (contact Sutphen Towers, Inc. for detailed
requirements).
There are 24 bolts on the turntable. These bolts have a SAE hardened washer and are factory-
installed to torque of 200-210 ft. lbs. This torque should be checked every three (3) months.
Any indication of loosening or bolt failure should be reported to Sutphen Towers, Inc. for
evaluation and disposition.
There are 30 bolts attaching the rotation bearing to the support structure. They are 5/8-11 NC
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