D8 cable plow attachment rebuild

[Frank S]

I have been working on this for a few months, time permitting between other jobs. like painting my house inside and out adding kitchen cabinets tiling a wall, replacing doors that kind of honey do's for the SWIMBA.: sweating:

They had hung a boulder and nearly ripped the whole plow off the back of the dozer The story I heard was the operator was plowing along in high gear nearing the end of the day, The crew trying to get that last 1000ft of conduit in the ground before time to knock off when the dozer stood straight up before he could shut it down. Supposedly there had been some lose broken and missing mounting bolts anyway. Nobody ever checks or tightens things before they break do they?

A mechanic had gone out and removed the attachment then they brought it and the dozer to me. The 1 3/4" thick mounting plate was bent in ways that could only have happened because of lose missing and broken 1 1/2" bolts or studs.
I finished disassembling the attachment then gouged off the mounting plate and replaced it with a 2" thick A572g55 I couldn't get any 514 T1 But a grind test showed the bent plate was just A36 anyway. SO what I used was 2x stronger in tensile strength plus 1/4" thicker.








Not only did the mounting plate have to be replaced but 30 years of hard work had worn this pivot and others I replace the pin with 4140 round bar And replaced the worn out sleeve bearings with new 90mm bore 100mm length 120 mm outer diameter hardened bushings

Gouging off the old plate

Rear of dozer using 3 bolts machined to a point to locate hole pattern

Drilling new plate with mag drill

Re installing using my forklift and backhoe


Installing ripper plow mount