3-11
WIRE ROPE LUBRICATION
The wire rope should be cleaned and lubricated every 50 hours of normal operation and
more frequently when used in dirty or corrosive environments. Whenever the rope is dirty
or dry, it should be serviced.
The rope should be cleaned with solvent and compressed air or solvent and rags. A wire
brush may be used for difficult areas.
The recommended lubricant is AMOVIS #2-X. It should be sprayed or dripped onto the
rope where it is bent as it passes over the tip sheave. Wrap rags around the wire rope
behind the sheave and swab the excess oil that is carried along on the rope.
W A R N I N G
Always wear heavy leather gloves when handling wire rope.
ROTATION BEARING LUBRICATION
There are two grease zerks, one each in a hole on the left-hand and right-hand side of the
turntable plate. These should be used to lubricate the bearing every 50 hours. Rotate the
turntable about 45° and pump some grease into each zerk. Repeat until the turntable has
rotated two revolutions. Use about one 14 ounce (0.4 L) cartridge of grease each time the
bearing is lubricated.
Also, lubricate the gear teeth of the rotation bearing at the 50 hour intervals. Remove the
pinion cover. Brush open gear grease, such as Mobilkote S, on the teeth on each side of
the pinion at four places around the bearing. Rotate the boom several times and check the
coverage of the grease on all of the teeth. Replace the pinion cover.
BRAKE SYSTEM MAINTENANCE
W
A R N I N G
The brake system of the RT-300 requires routine maintenance to ensure proper
operation. Failure to properly maintain the brake system may result in property
damage, injury, or death.
Brake Malfunction Light
: Mounted on the dash panel. If the light illuminates during normal
crane operation, driving the crane, or operating the brakes, discontinue operating the crane
and take out of service. This light indicates that the pressures in the brake accumulators
are too low for reliable brake operation. The problem must be found and fixed before
driving the crane any further.
To check that the brake malfunction light is operating correctly, turn the ignition key to the
ON position but do not start the engine. Pump the brake pedal several times to discharge
the accumulators. If the light does not illuminate, there is a malfunction in the sensor or in
the power supply to the light. The problem must be found and fixed before driving the
crane.
Courtesy of Crane.Market
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