7
PREVENTIVE
MAINTENANCE
A regular program of preventive maintenance for your
planetary capstan drive is strongly recommended to min-
imize the need for emergency servicing and promote
safe, reliable operation.
Field experience supported by engineering tests, indi-
cates the two service procedures listed below are the
MOST critical to safe, reliable operation and must be
observed.
Regular Gear Oil Changes − every 1,000 hours or six
(6) months.
Use of Proper Gear Oil − recommended type for pre-
vailing ambient temperature.
The following minimum service intervals are specified
for operating hours of the prime mover.
1. Oil Level
The gear oil level should be checked every 500
hours of operation or three (3) months, whichever
occurs first, or whenever there is any sign of oil
leakage. Oil level should be even with the center-
line of output shaft. Typically, one of the four plugs
in the housing will be on the drive centerline and
can be used to check oil level. The oil level should
be even with the bottom of the plug opening. If addi-
tional oil is needed, refer to “Recommended Gear
Oil”.
2. Oil Change
The gear oil should be changed after the first one
hundred (100) hours of operation, then every 1,000
operating hours or six (6) months, whichever
occurs first. The gear oil must be changed to remove
wear particles that impede the safe and reliable
operation of the brake and erode bearings, gears
and seals. Failure to change gear oil at these sug-
gested minimum intervals may contribute to inter-
mittent brake slippage which could result in property
damage, severe personal injury or death.
Remove the drain plug from the housing and drain
the oil into a suitable container. Capacity of the unit
is 2 pints (0.95 L). Remove the vent plug from the
housing. It is very important to keep this vent clean
and unobstructed. Clean the vent in solvent, be sure
it is not plugged, and re-install it in the drive. Do
not paint over the vent or replace it with a solid plug.
3. Hydraulic System
The original filter element should be replaced
after the first fifty (50) hours of operation, then every
500 operating hours or three (3) months, or in
accordance with the equipment manufacturer’s
recommendations.
4. Mounting Bolts
Tighten all capstan drive mounting bolts to recom-
mended torque after the first one hundred (100)
hours of operation, then every 1,000 operating hours
or six (6) months, whichever occurs first.
5. Warm-up Procedure
A warm-up procedure is recommended at each
start-up and is essential at ambient temperatures
below 40° F (4° C).
The prime mover should be run at its lowest
recommended RPM with the capstan drive control
lever in neutral allowing sufficient time to warm up
the hydraulic system. The drive should be oper-
ated at low speeds, forward and reverse, several
times to prime all lines with warm hydraulic oil, and
to circulate gear lubricant through the planetary
gears and bearings.
The brake valve cartridges are factory set and normally require no further adjustment. The brake valve
can be manually piloted open by its adjusting screw. Manually opening brake valve could cause inter-
nal drive damage and may cause loss of load control during lowering operations which may result in
property damage, severe injury or death.
The brake valve cartridges may be unique in that turning the adjustment screw in, clockwise, lowers
the brake release pressure. In the event it has been determined a brake valve adjustment is required
the entire brake valve cartridge should be replaced.
The brake valve cartridge is easily removed from the brake valve block for cleaning, inspection or
replacement, but is not designed to be disassembled in the field. In the event it has been determined
the brake valve should be disassembled, the entire brake valve cartridge should be replaced.
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