Dover TWG TULSA WINCH 1200W User manual

http://www.tulsawinch.com
SEL-0061-001
REV 0 July 2020
TABLE OF CONTENTS
SAFETY NOTES .......................................................................................................................... 2
INTRODUCTION AND THEORY OF OPERATION ........................................................................ 3
HYDRAULIC SCHEMATIC........................................................................................................... 4
MAINTENANCE AND SERVICE ................................................................................................... 5
WIRE ROPE ............................................................................................................................... 7
DISASSEMBLY ........................................................................................................................... 8
ASSEMBLY ................................................................................................................................. 9
SERVICING THE MOTOR ......................................................................................................... 10
SERVICING THE BRAKE........................................................................................................... 11
SERVICING THE PLANETARY SETS ......................................................................................... 13
TROUBLESHOOTING ............................................................................................................... 14
TORQUE SPECIFICATIONS CHART.......................................................................................... 15
BILL OF MATERIAL.................................................................................................................. 16
EXPLODED ISOMETRIC ASSEMBLY DRAWING ....................................................................... 19

2
SAFETY NOTES
FAILURE TO HEED THE FOLLOWING WARNINGS MAY
RESULT IN SERIOUS INJURY OR DEATH!
•Operators must be trained in the proper, safe operation of the hoist.
•Hoists are not to be used to lift, raise, or move people. If your task involves lifting or moving
people, you must use the proper equipment, not this hoist.
•Cable anchors on hoists are not designed to hold the rated load of the hoist. You must keep at
least five (5) wraps of cable on the drum to ensure that the cable doesn't come loose.
•Stay clear of suspended loads and of cable under tension. A broken cable or dropped load can
cause serious injury or death.
•Avoid shock loads. This type of load imposes a strain on the hoist many times the actual weight
of the load and can cause failure of the cable or the hoist.
•Make sure that all equipment, including the hoist and cable, are maintained properly.

3
INTRODUCTION AND THEORY OF OPERATION
The planetary hoist is designed to utilize a geroler, gear, or piston motor, driving through a multiple-
disc oil brake, through a pair of planetary gearsets to the cable drum.
The multiple-disc oil brake is spring applied and hydraulically released through a port in the brake
housing. During inhaul, the brake is not released, since the load is driven through a one-way cam
clutch, bypassing the brake. When the load comes to a stop, the cam clutch locks up and the brake
prevents the load from moving.
During payout, a brake valve is used to prevent the load from moving faster than desired. This
brake valve partially blocks the main line from the motor back to the directional control valve,
allowing only a limited amount of hydraulic fluid through the motor. The brake valve is then
modulated by sensing pressure on the other main line, the line from the directional control valve to
the motor. Additionally, any time there is sufficient pressure (225 PSI ±10%) to modulate the
brake valve; this same pressure releases the brake.

4
HYDRAULIC SCHEMATIC

5
MAINTENANCE AND SERVICE
For safe and consistent operation of TULSA WINCH hoists, swing drives, and winches, a regular
program of preventive maintenance is strongly recommended. Regular oil changes with the
correct oil for the ambient temperature conditions and an annual inspection of the wear
components will help ensure a long life for your planetary geared products.
Maintenance Scheduling
The owner is to ensure proper inspection intervals, in compliance with the API RP 2D Section 4
requirements or the ANSI B30.5, 5-2.3, and will review hoist usage categories on a periodic
basis. A Qualified Inspector should perform all maintenance and inspections.
•For hoists in occasional use, less than 10 hours per month, API RP 2D recommends a pre-
use inspection and an annual 12-month inspection based on average use over a quarter.
•For hoists in moderate use, more than 10 but less than 50 hours per month, API RP 2D
recommends a pre-use inspection, quarterly inspection, and an annual 12-month inspection
based on average use over a quarter.
•For hoists in heavy use, more than 50 hours per month, API RP 2D recommends a pre-use
inspection, monthly inspection, quarterly inspection, and an annual 12-month inspection.
Oil Level Maintenance
Tulsa Winch recommends that the oil level in the gearbox and brake housing be checked and
adjusted as part of the pre-use inspection. If the oil level drops frequently or oil leakage is
detected during an inspection, maintenance should be performed to correct any problems.
Oil Change Interval
The oil in the gearbox and brake sections should be changed every 1000 hrs or 6 months of
usage.