CATERILLAR D4-7U BULLDOZER IN NZ

STEERING CLUTCHES

Need new brake shoes on the bands

The D4 work to remove and repair steering clutches is not as bad and above pic shows the right side once out which was working. Note the gaps between each plate against the one below right rear side. The thickness of the steering clutch disc between the face of the inner clutch drum and pressure plate is 3 7/16" which is normal and 3 5/8 " max and should not be below 31/8". Disc can be added to bring the measurement up to 3 5/8" If you look above at the top is 2 plates. Measure from the top of this plate [not the housing ] to the bottom of the last disc not the bottom housing. To do the removal process one needs access to HD gear like 65mm socket and jigs and pullers HD. To get done at a Engineering shop may cost around $NZ1000- $ 2000NZ without the parts as its time consuming

STERING CLUTCH INFO

Cat spline seals need 2.

A lot of play in the end plate housing of the steering clutches but note these stay in the CAT while the steering clutches are removed. You will need to prise apart before you extract the steering clutch/bevel unit as one. Check the play in these end steering clutches plates for wear and replace. use new bolts as they are UNF and cheap.

We need to replace the bearings to the bevel gear assembly besdie the steering clutch

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