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oil on brake drum

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16 years 10 months ago #12846 by spencer d47u
I am getting oil on the brake drum on my d4 7u was just wanting to know if any one could tell me what is leaking? Didn't know if final drive pinion could leak on to the drum.Thanks

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16 years 10 months ago #12848 by Willie
Replied by Willie on topic oil on brake drum
Yes they leak, very common thing but it should drain out the bottom. Get underneith and see if drain holes are pluged with mud or someone put plugs in the holes if so just let drain, after they have drained for day or so if you need to put plugs in holes add few gallons of kerosene or diesel thru adjusting cover and run for awhile then drain and leave hole open

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16 years 10 months ago #12849 by Old Magnet
Replied by Old Magnet on topic oil on brake drum
Could be coming from pinion seal, bevel gear shaft seal or over oiling the throwout bearing. Any of these could dribble down the sides and be carried around by the drum.

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16 years 10 months ago #12851 by spencer d47u
Replied by spencer d47u on topic oil on brake drum
The plugs are out of the bottom if i spray break cleaner on the brake drum and brake lining i can run it for awhile before it stops working. thanks

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16 years 10 months ago #12852 by ol Grump
Replied by ol Grump on topic oil on brake drum
I'm wondering if maybe the wear on the brake linings is to the point of getting into the rivets or beyond? That and a little oil will really screw up the brakes. If the plugs have been out and it's still oiling up, maybe too much oil on the throwout bearings? I don't see how gear oil could be getting from the pinion all the way out to the brakes as it would have to get past the bearings first.

Just a thought. . .

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16 years 10 months ago #12853 by ccjersey
Replied by ccjersey on topic oil on brake drum
I would take a piece of wire and bend it in an 'L' so you can put it in the drain holes and scrape around the holes to make sure there isn't a dam of gunk that's preventing complete draining. You could also see if the brake band support screws would screw out easily and allow any more oil to drain. Unfortunately there might be some water under the oil film that could cause rusting, so I certainly wouldn't force the screws and take a chance of wringing one off.

D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time:D

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16 years 10 months ago #12855 by spencer d47u
Replied by spencer d47u on topic oil on brake drum
The brake linings look really good where do you oil the throw out bearings this is my first old cat.thanks

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16 years 10 months ago #12856 by Willie
Replied by Willie on topic oil on brake drum
Well there is no real way for oil to get on drum it has to be a build up of oil in the bottom that its turning in. Ckeck like CC says and you may wanna plugit and flush it really good keep us posted of what you find out

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16 years 10 months ago #12857 by OldNuc
Replied by OldNuc on topic Where to oil throw out brng.
Thee are three oil cups on the floor for oiling the throw out bearings for the two steering clutches and the main clutch. You should look for an O&M manual for that CAT as it shows all of the places that require periodic lube. I think there are several listed on eBay as we speak.

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16 years 10 months ago #12858 by Willie
Replied by Willie on topic oil on brake drum
Lube the throwout bearings with oil every 10 hrs in cups right under front edge of seet just behind where the steering levers pivot

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