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Winches are rated at bare drum line pull, meaning the maximum load capability will be reached on the fi rst layer of wire
rope. As the cable drum fi lls, the line pull will decrease (loss of leverage) as the line speed increases (larger circum-
ference). Therefore, it is best to install the minimum length of wire rope possible for your application so the winch will
operate on the lowest layers, delivering the maximum load capability.
Use of larger diameter wire rope will not always increase strength as the larger wire rope may be more prone to bending
fatigue failure due to the drum diameter. Consult your wire rope supplier for their recommendations regarding the best
wire rope and rigging for your application.
Winch wire rope anchors or ferrules are NOT intended to hold rated loads. Winch loads applied directly to the cable
anchor may cause the wire rope to pull free and result in sudden loss of load control and cause property damage,
injury or death. A minimum of fi ve (5) wraps of wire rope must be left on the drum barrel to achieve rated load.
INSTALLATION OF U-BOLT TYPE CLAMPS
Prepare the end of the wire rope as recommended by the wire rope manufacturer. Pass the wire rope through the U-bolt
until the end extends 1.5 – 2 wire rope diameters beyond the clamp. Evenly tighten the U-bolt nuts until the wire rope
deforms slightly under the U-bolt and the wire rope is securely held.
INSTALLATION OF SPIRAL FERRULES
Re-useable, fi eld installed spiral ferrules are available from PACCAR Winch Division or your wire rope supplier. These
ferrules are for use with six (6) strand, IWRC (Independent Wire Rope Core) type wire rope. Refer to cable capacity
specifi cations on page 14.
Insert wire rope through the small diameter end of the
ferrule. Spread the strands and insert the spiral wedges
between the strands and the core. Lay the strands in the
individual grooves in the spiral wedges.
WIRE ROPE INSTALLATION
STEP ONE
Tap the wedges and wire rope end into the ferrule, leav-
ing approximately 3/8 in. (10 mm) extending from the top.
The fi rst load applied to the winch will seat the wire rope
and wedges securely in the ferrule.
11
STEP TWO
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