D7 front CCU leaking oil

[funflyer26]

I have recently acquired a 1953 D7 (D7-7M1629SP) and after the first day of using it, the front gear box running the cable drum started leaking oil which got the pads oily and now it doesn't have the friction to hold the blade up. I obviously need to pull it apart fix the seal, clean the pads and then it should work again but I have hit a roadblock in the disassembly process. I have the operation and maintenance instructions, the servicemen's reference book, and the parts book but they are all for the base tractor itself, nothing for the attachment. I have attached some pictures, including what I think is the serial number on the gear box, does anyone know the next step to taking this thing apart? Thanks!

[u-joint]

you will need to acquire a cable control manual. it should be on a tag if there is one left. my guess is its a number 24.

[Old 3T lover]

It has been well over 30+ years since I did this so I may be wrong... but here goes anyway. With the cover off, just release the brake band and UNadjust the CCU drum(unscrew the adjustment of cable spool/drum) until you can remove it. All the seals and how to continue the disassembly will be revealed then.

[funflyer26]

That should get me started, thanks!

[Old Magnet]

The #24 manual recommends separating the cable drum from the brake drum as next step (unscrew the adjusting sleeve until you can lift it off). Can be removed as an assembly but your going to have to separate to access the seal on the back of the cable drum anyway.

Service manual for the #27, 25, 24, 23 and 21 Cable Controls is Form #10088

[Kelly]

The #24 manual recommends separating the cable drum from the brake drum as next step (unscrew the adjusting sleeve until you can lift it off). Can be removed as an assembly but your going to have to separate to access the seal on the back of the cable drum anyway.

Service manual for the #27, 25, 24, 23 and 21 Cable Controls is Form #10088

I’ll add a little more to what the boys are talking about. One important item is getting the bearing adjusted when you reassembly your unit. Hope this helps.
Kelly


24_cabledrumremoval_1.pdf24_cabledrumremoval_2..pdf

[bjohnson]

I have recently acquired a 1953 D7 (D7-7M1629SP) and after the first day of using it, the front gear box running the cable drum started leaking oil which got the pads oily and now it doesn't have the friction to hold the blade up. I obviously need to pull it apart fix the seal, clean the pads and then it should work again but I have hit a roadblock in the disassembly process. I have the operation and maintenance instructions, the servicemen's reference book, and the parts book but they are all for the base tractor itself, nothing for the attachment. I have attached some pictures, including what I think is the serial number on the gear box, does anyone know the next step to taking this thing apart? Thanks!

Look on ebay we found one at a good price.

[funflyer26]

Thank you all for your help, once I finally got time to go out there in the daylight the outer drum came off easily. However, now i'm stuck on the inner drum. According to the service manual once the capscrews are taken off and the plate is twisted and removed the inner drum should slide right off the shaft. but mine is froze solid, is that just a matter of time holding it in place? I've put some pretty good force on it but it hasn't budged. Am i missing something that the book isn't saying? The picture attached shows where its at now.

[edb]

Hi funflyer26,
you should be able to remove the bolts behind the pressure plate by inserting a suitable socket wrench thru one of the holes in the pressure plate. I believe I can see a bolt head at about 12 o'clock in your pic in post #8. Once all these bolts are removed you should be able to withdraw the assembly.

You really need the Service Book to do these as there are some fine shim adjustments to do to set it up correctly not to mention resetting the screw and lever into position to work full range.

Maybe Kelly would be kind enough to post up the assembly steps from his SRB.

Merry Christmas to One and All.
Eddie B.

[razz]

funflyer if you need a brake band or clucth disc i have some that are in real good condition. I am in NC Iowa. Razz. They are for a 24 unit.