STRUCTURALS 5540F/YB5515 SERVICE MANUAL
11-34
Service Precautions
• Before any part is removed from the winch, all service
instructions should be read and understood.
• Work in a clean dust free area as cleanliness is of the
utmost importance when servicing hydraulic equipment.
• Inspect all replacement parts, prior to installation, to
detect any damage which might have occurred in
shipment.
• Use only Grove replacement parts for optimum results.
Never reuse expendable parts such as oil seals and o-
rings.
• Inspect all machined surfaces for excessive wear or
damage before assembling the winch.
• Lubricate all o-rings and seals with gear oil prior to
installation.
• Use a sealing compound on the outside surface of oil
seals and a light coat of thread sealing compound on
pipe threads. Avoid getting thread compound inside
parts or passages which conduct oil.
• Thoroughly clean all parts in a good grade of
nonflammable safety solvent. Wear protective clothing
as required.
Winch Assembly
Disassembly
NOTE: Some illustrations may not depict the exact winch
you are disassembling, but the disassembly
procedure are the same. Use Figure 11-60 as a
reference.
1. Align the drain hole in the drum with a hole in the support
side plate before removing the hoses and mounting
bolts. After the winch is removed from its mounting,
thoroughly clean the outside surfaces. To drain the oil,
install a short piece of 1 inch threaded pipe in the larger
threads of the drain hole (Figure 11-61). If necessary,
insert a bar in the wedge socket anchor pocket and
manually rotate the drum in the direction to hoist a load
until the drain holes align.
2. Use a 5/16 inch Allen wrench to remove the drain plug
through the pipe (Figure 11-62).
NOTE: It is not necessary to remove the winch tension
roller subassembly to disassembly the winch. But if
it becomes necessary, see Winch Tension Roller
Subassembly Service (Page 9-48) for disassembly
procedures.
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