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Gian Businesses Index & Contractors in Levin and wellington NZ
 
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CATERILLAR D4-7U BULLDOZER IN NZ

FOR RESTORATION OF STEERING CLUTCHES

 

The D4 work to remove and repair steering clutches is not as bad as a D2 but when a machine is old so are the nuts and bolts. We found by hitting the bolts with a hammer it loosened them a bit but it helps to have a good ratchet heavy duty lever arm etc to take the 3/4 bolts off. In the book it says you can take the the whole rear end off as one but as we want to redo this piece by piece we took off first the seat/ rear tank first then the fender plates and then the top cover. Once done then we will work on the tracks.

 

 

 

The Caterpillar D4 -JU Series READY for restoration & steering clutches

 

 

Rear tank and seat already removed and one fender. If taking each fender off remember these are heavy so make sure you strop to hold these in place. If undoing the bolts underneath the fender can do damage to you. We used long lever ratchet and used the tracks to brace each fender when they dropped. VERY IMPORTANT

 

 

56D.

Both fender plates are removed. Remember these are heavy 2 man jobs. Note the 3/4 large rachet we use with steampipe extension and make sure you strop and hold the plates.

 

 

Top plates off and bolts holding top plate also off

 

 

Inspection covers nearly ready for removal. Note 3/4 bolt out on right. left needs doing as well

 

 

 

 

 

STERING CLUTCH INFO

Clearance between shaft & Pressure plate bush .002" -- .004"
Max allowed clearance .015"
Clutch springs outer in pounds pressure 161-178
Clutch springs inner in pounds pressure 123-136
Clutch springs inner in pounds pressure compressed 2 13/16"
Steering clutch min width 3 1/8"
Steering clutch normal width 3 7/16"
Steering clutch maximum width from face inner clutch & p.plate 3 5/8"
Steering clutch inner drum-to-shaft pressure in tonnes 20
Steering clutch lever badjustment, free play 3"

 

If you wish to share any CatD4-7U info please send us email. We are happy to add information for you on our website especially parts comments, problems, pics of your machines ---etc & we can list your parts for sale or wanted to buy on our website [ D4-7U bulldozer Forum ad ]

 

JUST EMAIL US

 

 

More[ D4-7U pony motor & add Honda starter ] [ D4-7U work on steering clutches 2 3 4 5 6 7 8 9 10 11 12 13 14 ] [ D4-7U bulldozer latest Oct 2010 pics ] [ D4-7U bulldozer pics ] [ D4-7U bulldozer pony motor ] [ D4-7U bulldozer Birtley blade ] [ D4-7U bulldozer USA parts ] [ NZ suppliers of CAT & Komatsu parts ]

We are also suppliers of NEW Komatsu spare parts for PCs up to 4 tonne as well looking for agents to buy our [ retread truck and bus tyres ]. RUBBER EXCAVATOR TRACKS FOR SALE all models : [ RUBBER TRACKS ] [ Kiwi bulldozer parts links ]

 
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