Thern FVC-1000, Owner'S Manual

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Owner's Manual for Thern Model FVC-1000 Winches page 13
A8018B-1210
Table 1 – Inspection Checklist
damages problems
general fi nish weathered, fl aking, otherwise damaged winch jerks or hesitates during operation
parts cracked, bent, rusted, worn, otherwise damaged unusual noises, other signs of malfunction
fasteners stripped threads, bent, worn, otherwise damaged loose, not tightened to the proper torque
gears excessively worn ,cracked, corroded, otherwise damaged loose or improperly lubricated
brake brake corroded, cracked, worn, otherwise damaged brake does not operate properly
drum anchor hole worn, distorted, otherwise damaged excessive movement or backlash
wire rope bent, crushed, otherwise damaged wire rope loosely or unevenly wound
broken wires, see Figure 4
replace if more than 6 wires in one lay, number per strand =
or 3 wires in one strand in one lay, are broken number per lay =
diameter reduced, see Figure 5
replace if diameter is excessively worn diameter =
end connections corroded, rusted, worn, otherwise damaged not securely attached
labels and plates dirty, illegible, otherwise damaged loosely attached or missing
comments
authorized signature date
checked boxes indicate damage or problem in need of repair
Table 2 – Troubleshooting Chart
Contact the factory for detailed instructions on re-sealing the gearbox if you are required to disassemble the
gearbox for any reason. Disassembly of the gearbox before contacting Thern, Inc. voids all warranties.
problem cause correction
handle turns, drum doesn’t turn • loose or broken spring pins or shafts inspect winch and repair as necessary
• loose, stripped or broken gears or keys inspect gears and repair as necessary
handle turns hard or not at all • spring pins loose or broken on winch inspect winch and repair as necessary
• brake band too tight or locked inspect brake, adjust or repair as necessary
• gears or bearings broken or locked inspect and repair as necessary
brake does not operate properly • brake worn or damaged inspect and replace as necessary
• brake hub damaged or broken inspect and repair as necessary
excessively worn gears or bearings • excessive overloading inspect installation and correct as necessary
• poor lubrication of gears or bearings inspect and lubricate as necessary
overheating • operated too long without rest allow to cool
• poor lubrication inspect and lubricate as necessary
• bearing seized up inspect and replace as necessary
unusual noises
high pitched squeak • poor lubrication inspect and lubricate as necessary
grinding noise • contaminated lubrication drain, clean and lubricate the winch
• dirt in winch gears inspect and clean as necessary
• broken gears or bearings inspect and replace as necessary
rattling noise • loose bolts, set screws or other fasteners tighten all bolts and other fasteners