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  1. Forum
  3. Antique Caterpillar Machinery Owners Club
  5. DISCUSSION
  7. D4 4G clutch repairs

D4 4G clutch repairs

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16 years 6 months ago #16482 by kejoycats
D4 4G clutch repairs was created by kejoycats
Had sometime to look in to clutch on old d4.Will post some pictures on removal and repair.

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16 years 6 months ago #16605 by kejoycats
Replied by kejoycats on topic D4 4G clutch repairs
Couldn't get removal pictures to upload.Will try some repair pictures.
Attachments:

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16 years 6 months ago #16610 by Old Magnet
Replied by Old Magnet on topic D4 4G clutch repairs
Nice repair:)
It's that flux in the brown bottle that makes all the difference:D :D

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16 years 6 months ago #16623 by kejoycats
Replied by kejoycats on topic D4 4G clutch repairs
O.M. It was a try and see repair.Maybe a different rod with more copper comp. would have been better,time will tell.Made a new through bolt for the coller a little longer to get a little farther into the repaired piece.will cut to length at assembly.Yes the flux helps if aplied after the repair is done.

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16 years 6 months ago #16680 by dewets
Replied by dewets on topic D4 4G clutch repairs
Old Magnet, that's not flux in them thar lil brown bottle, that's cooling liquid for the welder...:D :D
Great job there KJC!

Good 2 C anudder ole Cat clutched up and away from the scrappers torch!
Somerset West, Cape Town
South Africa

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16 years 5 months ago #17306 by kejoycats
Replied by kejoycats on topic D4 4G clutch repairs
Got back in town + started on comp. of clutch repairs.had to build up threads in yoke as they were stripped out.Tryed to drill after buildup ruined 2 drill bits .Heated to dull cherry red + burried in hot ashes overnight was able to drill + tap with ease.Hope i didn't destroy the temper of the yoke overall, seems fine.O.M.would appreciate your comments on this.Will try and post some pictures later.

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16 years 5 months ago #17308 by Old Magnet
Replied by Old Magnet on topic D4 4G clutch repairs
I don't believe the yokes were tempered. Just hardened balls (replaceable) at the pivot points.
You could go another heat/quench cycle if you wanted it heat treated.

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16 years 5 months ago #17309 by kejoycats
Replied by kejoycats on topic D4 4G clutch repairs
O.M.Took some pictures of yoke after drilling and threading.Don't know the carbon cont. of the yoke but it sure got hard after welding with mild steel wire.Will try and post some pictures showing area of weld and heat treating you can see by the discolouration I hope.Need help resizing my files can;t get them to load.

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16 years 5 months ago #17319 by kejoycats
Replied by kejoycats on topic D4 4G clutch repairs
O.K.Got my grandson to help with pictures. There is some of the clutch brake and the cam for the clutch. So far parts have cost me 20 dollars for the cam and 20 dollars for the brake lining.
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  1. Forum
  3. Antique Caterpillar Machinery Owners Club
  5. DISCUSSION
  7. D4 4G clutch repairs
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