overheating / cable adj. D6B

Is it front or rear cable winch?

1/2" diameter 6x19 (with filler wires), with an independent wire rope center, preformed, of Lang Lay construction, manufactured from improved plow steel, Right Lay is ordinarily used.

This is taken from an old LeTourneau power control unit instruction book, it states that this type of cable has the strength and wear qualities required for this application. The caterpillar book for my blade just shows a part number, 40 feet of cable for a rear CCU on a D7 but I thought it was the same spec. wire rope.

You can also leave a some extra spooled up and secured on the front of the tractor so you can rotate the wear areas of it, this extends the service life of it by eliminating concentrated wear in one spot for each sheave, just loosen up the cable stop and reel some to the back or let some off the spool and loop the extra onto the front. (see attached photo) Whatever you do pay special attention to what you are doing, don't adust that CCU when the tractor is running, especially if a front mounted one, that can be deadly.

Now here is some information on this type of cable/wire rope

RIGHT LAY LANG LAY WIRE ROPE:

Wire rope is termed Right Lay when strands are laid from left to right and Left Lay is when the strands are laid from righ to left. Wire rope is Regular Lay when wires in each strand are laid in opposite direction to that of strands in rope. In Lang Lay rope, wires of each strand are laid in the same directions as strands in rope.

The length of exposed wires in a Lang Lay rope is about twice that of the Regular Lay, consequently it is better able to withstand abrasion, and for the same resaon, it reduces wear on sheaves and drums. It fatigues slower from bending over sheaves and drums. On the other hand, a Lang Lay rope is more lively, and should be handled with care to prevent kinking. It requires a proper drum winding to prevent crushing. Preforming a Lang Lay wire ropereduces the kinking tendency and makes for smoother spooling.

According the to the tables for 1/2" wire rope, it varies by type, stength in tons seems to range from 8 to 10 (2000 lb tons) information provided from Leschen wire rope MFR. I'd think you would be good with 1/2" as called for, the blade can't be more that 4000-5000 lbs., just have to keep an eye on worn areas, not bang the sheave blocks together when raising and not let the blade free fall, all this is sure to keep one busy when operating an old cable dozer !