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Farmall & IHC Tractors Discussion Forum
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brake seal replacement on Farmall H

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William Stubbs

10-21-2007 20:27:36




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Does anyone have some advice on pulling the part that holds the seal (PN 8518)? I used 2 of the mounting capscrews as jackscrews and have broken the casting. I would like to know the correct procedure to pull this part and, also, I need a replacement part since I broke mine. This part is referred to as the "Bull Pinion Shaft Bearing Cage with Oil Seal."
Thanks,
Bill Stubbs bgstubbs@sonic.net Northern CA

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Fancy Farm

10-22-2007 08:05:38




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 Re: brake seal replacement on Farmall H in reply to William Stubbs, 10-21-2007 20:27:36  
been there done that.
Good thing is you won't do it but one time you w
will get it right next time. You will have to remove the transmition top ,pull the PTO shaft out, take the bull gear off and remove the axel housing from the ofending side.



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CNKS

10-22-2007 07:11:33




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 Re: brake seal replacement on Farmall H in reply to William Stubbs, 10-21-2007 20:27:36  
Too late now, but you did not have to remove the cage to replace the seal. You could have carefully dug or pulled it out. Two seals are ok, but since the newer ones are far superior to the leather ones that came on your tractor, one will do.



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Wayne in MN

10-21-2007 20:34:31




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 Re: brake seal replacement on Farmall H in reply to William Stubbs, 10-21-2007 20:27:36  
Sorry to hear of your problem; the bull gear needs to be removed to replace the bull pinion casting.
Band brake tips-H & M
Remove the pins holding the brake adjuster to the pedal & actuating lever. Loosen & lube them.
Remove the cap screws holding the brake housing; wiggle it & they should come off.
Note or draw a diagram of how the brake band is attached to the cam. Turn the housing over, shake, tap or whatever to get the 2 pins out. If you remove the outer lever & half-moon key the whole thing comes out.
Replace the band & be sure the brake cam pivot shaft works freely in the cover. Oil or grease the pivot the area well and let the excess drip off before installing the new bands. Remove the brake drum; do not try to remove the bolted-on housing containing the seal. The bull gear has to be removed first to get the housing off. Using punches, chisels, etc. collapse the old seal inward, if original; it is difficult but will succumb to persistent efforts. Replace with 2 seals per side and place some chassis grease in-between them to protect the outer one from drying out. Polish the sealing surface and re-assemble.
Place a small amount of grease in the hole where the brake pivot goes into the transmission housing. After installing the bands & getting the pedal free-play to about 1", apply the brakes firmly, lock them in place and adjust the setscrew on the bottom side of the cover. (helps to loosen any adjustable parts BEFORE re-assembly) Loosen the jam nut, turn the set screw in until it touches the brake band, back out 1/2 turn & lock the jam nut. This helps prevent the brake band from dragging, premature wear, and overheating.

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