18
PREVENTIVE MAINTENANCE
A regular program of preventive maintenance for your
winch is required to minimize the need for emergency ser-
vicing and will promote safe, reliable winch operation.
The user of PACCAR Winch products is responsible for
winch inspection, testing, operator training and the main-
tenance noted below, with frequency dependent on the
severity of the winch duty cycle and the thoroughness of
the preventive maintenance program.
Field experience, supported by engineering testing, indi-
cate the two service procedures listed below are the most
critical to safe, reliable winch operation and MUST be ob-
served.
• Recommended Gear Oil Changes
• Use of Proper Gear Oil – recommended type for pre-
vailing ambient temperatures and additives.
Recommended Preventive Maintenance Intervals:
Daily (when winch is in use)
1. Inspect the wire rope and rigging for broken wires or
other damage, as recommended by the wire rope and
rigging manufacturer(s).
2. Carefully inspect the drum clutch and adjust the shift
mechanism as required to ensure the clutch can be
fully engaged and disengaged. (Refer to “Drum Clutch
Operation”.)
3. Check for external oil leaks – both hydraulic and gear
oil – and repair as required. This is extremely important
due to the accelerated wear that can be caused by in-
suffi cient lubrication within the winch. Gear oil must be
maintained at the proper level. Use only recommended
lubricants. (See “Recommended Lubricants” in this
manual.)
4. Check hydraulic motor plumbing for damage, such as
chafed or deteriorating hoses, and repair as needed.
5. Visually inspect for loose or missing bolts, pins, keep-
ers or cotter pins, and tighten or replace as needed.
Weekly
1. Perform all daily inspections.
2. Check gear oil level, and refi ll as needed with the rec-
ommended lubricant.
3. Lubricate the grease fi ttings on the bearing leg, cable
drum ends and clutch. On some winches, you will have
to disengage the clutch to gain access to the drum
bushing grease fi tting on the clutch end of the drum.
Use a high-quality, moly-type grease, with a rating of
NLGI-2 or better.
4. Inspect the gear housing breather to ensure the fi tting
is not clogged with dirt or grease. Clean or replace as
needed.
5. Inspect all winch mounting fasteners. Retighten or re-
place as required.
6. Inspect any structural welds, and repair as needed.
Monthly
1. Perform all daily and weekly inspections.
2. Inspect the drum clutch and clutch plate to ensure the
negative draft angle is clearly evident. Replace worn
clutch components as required. (Refer to “Drum Clutch
Operation” in this manual.)
3. Check the hydraulic system relief valve setting to en-
sure proper performance and protection of hydraulic
components. Adjust or repair as required.
4. Inspect hydraulic system fi lters and strainers. Follow
the system manufacturer’s service recommendations
for repair or replacement.
Yearly
1. Perform all daily, weekly and monthly inspections.
2. Replace gear oil.
NOTE: If the winch is used in excess of 50 hours per
week, the gear oil should be changed every 6 months.
NEVER attempt to service a winch with the prime mover
running as accidental engagement may result in prop-
erty damage, injury or death.
Make certain ALL load is removed from the wire rope
and winch cable drum BEFORE servicing the winch.
A loaded wire rope may rapidly and unexpectedly un-
spool, resulting in property damage, injury or death.
DO NOT use the winch if the negative draft angle on
the clutch is not present or is worn straight, or if the
clutch plate edges are rounded or chipped. A defective
drum clutch may suddenly become disengaged causing
a loss of load control, which may result in property dam-
age, injury or death.
Hot oil can cause severe injury. Make certain the oil has
cooled to a safe temperature before servicing.
Any problems identifi ed must be corrected before the
winch is returned to service. Failure to correct may re-
sult in property damage, personal injury, or death.
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