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D6-8U clutch work

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3 years 10 months ago #223641 by mog5858
D6-8U clutch work was created by mog5858
I am working on my new to me D6-8U 2337 that I bought with clutch problems. what I found when I pulled the clutch was one clutch link was broken but the rest look new and in great shape is there a reason why only one would blow or did the P.O. just only replace 4 and not 5 is my guess but this is the first time I been into a clutch. the second thing I found was the 2 bolts on the end of the clutch shaft that holds it together are broken/sheared off so no matter how much you adjust the clutch it would never work. the question is what would cause the bolts to shear off? I am going through the rest of the clutch linkage and making new bushing to take up any slop. I am plating on re-using the frictions for the clutch as they look to be in good shape with lots of life left in them. the cat had a slight vibration when I was running at hi rpm but I am thinking it was due to the clutch not being together or is there something I should be looking for I know that's very vague. thanks for your input.
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3 years 10 months ago #223655 by gemdozer
Replied by gemdozer on topic D6-8U clutch work
With a missing link you found the vibration and why broking link maybe the link was bad enlignent and make sure about the flywell pine are't bent and check the bearing

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3 years 10 months ago #223696 by mog5858
Replied by mog5858 on topic D6-8U clutch work
thanks for the great info I was looking at it again today and I am sure the motor was changed as the numbers don't match so I better check their ailment too. yes, it will be getting a new throwout bearing and renew all the pins and bushing in the clutch linkage before going back together.

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3 years 10 months ago #223714 by Ray54
Replied by Ray54 on topic D6-8U clutch work
If you are going that far make sure to check the engine alinement. Much easier to get out of alinement with a dozer than in farming. But D6 I got to farm with was out of alinement with no sign of ever having a dozer on it.

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3 years 9 months ago #223977 by mog5858
Replied by mog5858 on topic D6-8U clutch work
I hate to ask but can someone give me part numbers for the clutch links and throw out bearing. They have 9B399 on the clutch link but that’s not working . Other interesting things the bearing rollers have a grove cut in for grease? Never seen that before. Not having luck finding a parts book right now thanks for any help.
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3 years 9 months ago #223978 by d2gary
Replied by d2gary on topic D6-8U clutch work
The new system doesn't recognize some of the old numbers, you have to add a zero in front of the number. I just typed in 9b0399 and went right to your clutch linkages

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3 years 9 months ago - 3 years 9 months ago #223979 by PhilC
Replied by PhilC on topic D6-8U clutch work
I don't have a parts book for the 9U so I can't look up the bearing number. I do have a book for the 5R which I think has the same clutch. Are you looking for the bearing you show in the picture or the bush in the throw out collar?

944A - Machine SN 43A2589 Engine SN 90A284
955K- Machine SN 71J3772 Engine SN 83Z0704
D6 SN's 4R732sp, 5R2724, 5R4832
D8 SN's 15A1254, 15A2287, 15A2723
Last edit: 3 years 9 months ago by PhilC.

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3 years 9 months ago #223983 by gemdozer
Replied by gemdozer on topic D6-8U clutch work
The 9b399 is a good number for the link and the bearing assambly is 1b4369

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3 years 9 months ago #223995 by mog5858
Replied by mog5858 on topic D6-8U clutch work
Thanks for the very quick help. I will put them to good use. The adding a 0 is great idea.

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3 years 9 months ago - 3 years 9 months ago #224210 by mog5858
Replied by mog5858 on topic D6-8U clutch work
Well, I got my new clutch link in today and much to my surprise it was a rubber/fiber link, not plastic like what I took out. They’re only 3/8 of an ounce or 10 grams different in weight. So my plan is to mix them 4 plastic and one rubber one as they are 125 each and well money’s doesn’t grow on trees. I almost made one my self as we have thick plastic at work maybe I still should? Thanks for the help and input.
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Last edit: 3 years 9 months ago by mog5858. Reason: spelling and info

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