SHORT BLOCK 10R7437 - Caterpillar

All winches are rated at bare drum line pull. As the cable drum fills, the line pull will decrease (loss of leverage) as the line speed increases (larger circumference). Therefore, install the minimum length of cable possible for your application so that the winch will operate on lower layers (smaller diameter) and deliver the maximum line pull.Using larger cable will not always increase strength, as the larger cable may be more prone to bending fatigue failure than smaller rope. Consult your wire rope supplier for his recommendations for the wire rope and other rigging which best suits your application.Maximum warrantable wire rope diameter.PA55= 7/8 in. (22 mm)PA56= 1 in. (25 mm) Installation of Spiral Ferrules
Re-usable, field-installed spiral ferrules are not supplied with all Paccar winches. These ferrules are for use with standard six-strand, IWRC (Independent Wire Rope Core) type wire rope. Refer to ferrule selection chart in the "Specifications" section of this manual. Insert cable through the small opening of the ferrule. Spread strands and lay them in individual grooves in spiral wedges. Tap wedges and cable into the ferrule leaving approximately 3/8 in. (10 mm) extending from the top. The first load will seat cable and wedges securely in the ferrule.