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Case Tractors Discussion Forum

930 Case, no brakes

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KY Jim

05-18-2007 19:19:01

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Have a '66 model Case 930/931 with absolutely NO brakes. Have ordered new brake discs. How do you replace these? I suspect you merely remove the brake housings on the sides of the transmission housing, remove the old ones and replace. Any tips, suggestions, etc? Torque specs on brake housing bolts? Also, what flavor lubricant do these tractors use in the trans? I imagine when I pull the brake housings it'll all leak out. Any help much appreciated. Never owned a Case tractor, or knew anyone who had. Thanks, KY Jim

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MI-case

05-20-2007 17:27:02

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Re: 930 Case, no brakes in reply to KY Jim, 05-18-2007 19:19:01

Trick with the drain hole - stick a small split pin through the hole from the inside out, so it just dangles there by eye of the pin. It's wiggle anf vibrate and keep crud from forming in there.

British engineers KNEW the transmissions would leak, so just about every car they made until the 80's had this little innovation.

Steve

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Gary in Pulaski, WI

05-20-2007 17:19:15

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Re: 930 Case, no brakes in reply to KY Jim, 05-18-2007 19:19:01

Just thought I'd mention that the co-op here in Pulaski can get the dust covers from the Case/IH dealer near by. about $12-$13 each. They are used on many Case tractors. Sometimes with new brake discs, I could NOT use the over sized balls in the actuator. There just wasn't enough clearance for them. But, after some wear, then I would replace them with the larger size. for what it's worth-.

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KY Jim

05-20-2007 07:51:54

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Re: 930 Case, no brakes in reply to KY Jim, 05-18-2007 19:19:01

Thanks, y'all. I'm gonna tear it down here shortly, let you know what I find. I noticed my dust covers on top where the adjusting nuts are were shot. Any idea where I can get new ones? KY Jim

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TexasWren

05-20-2007 06:48:48

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Re: 930 Case, no brakes in reply to KY Jim, 05-18-2007 19:19:01

The seals are probably leaking, or they inevitably will, but Case engineers thought of that -- there"s a drain hole in the bottom of the bearing housing (the part of the brake assembly closest to the tranny). That hole can get clogged with dirt, grass and such, which will cause the brake housing to slowly fill up with oil, so stick a thin screwdriver or a drill bit up in that drain hole to clean it out. That will let any oil that leaks past the seals drip out, instead of getting on the brakes. Once you have the brake covers off, shoot some solvent into that hole and make sure it"s coming out the top.

There is a press-fit cap in the end of the bull pinion which is another possible (but not common) place for leaks. Unfortunately, that oil will go directly on the brake disks, and there"s no way to drain it away. I don"t exactly know how to replace those IF they are leaking (they usually aren"t) with the bull pinions in the tranny. Torque specs for the cover screws is 40-50 foot pounds, if I remember right.

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Jim B.

05-19-2007 20:12:48

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Re: 930 Case, no brakes in reply to KY Jim, 05-18-2007 19:19:01

No oil should leak out when you remove the brake housing. In-fact, if it's even a little oily inside the brake mechanism you should replace the shaft seals. Brakes MUST be dry. If they're oily that may be why you have no brakes. If really oily you may not even need to replace the discs, just clean em' up and reinstall after replacing the seals. That's what was wrong with my 930, many years ago.

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Lamont

05-19-2007 10:30:07

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Re: 930 Case, no brakes in reply to KY Jim, 05-18-2007 19:19:01

Replace the balls with ones that are 1/16 inch larger. We found that doing this extends the life expectancy of the brakes. Ditto bradley martin's comments on checking the ball seats in the actuating plates. They should be cone-shaped, NOT cup shaped. I would put new springa in also if the old ones look very corroded. You're going to have them off anyway. Not a tough job and should give you good brakes for 20+ years.

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bradley martin

05-19-2007 02:51:50

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Re: 930 Case, no brakes in reply to KY Jim, 05-18-2007 19:19:01

Transmission fluid is TCH or Type A ATF...any quality tractor hyd/trans fluid works fine. And no, it will not leak out when you remove brake housings unless your pinion seals are completely shot. Check your activating balls and seats when apart. If you haven't tried adjusting your brakes do so,

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KY Jim

05-20-2007 12:21:33

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Re: 930 Case, no brakes in reply to bradley martin, 05-19-2007 02:51:50

Got 'er tore down, brake clutches were worn out AND oiled up. No Wonder. So I tore it on down, and I need new pinion seals, dust covers, springs, and one of the clutch plates that the scissors mechanism attaches to is cracked plumb through. And I believe I'll replace the springs, since it's all apart. Shims and O-rings looked good, though. Shoot, these ain't brakes, they're Steering clutches! I don't know WHERE I'll find the dust boots, though..So there it is, waiting on parts. Thanks for all the help, I 'preciate it. KY Jim

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Jim Baxter

05-21-2007 19:34:04

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Re: 930 Case, no brakes in reply to KY Jim, 05-20-2007 12:21:33

Although I posted an earlier reply to your questions I'd like to add something more that may help. Since we use several 30 series Case tractors on our small operation seems brakes need to be repaired every few years. Although we did the 930 brakes several years ago and all is still OK the 830 needed repaired this season so I happen to also be acquiring parts. Thought I'd mention that our local CIH Dealer charges $37.73 for one (1) disc. Your 930 uses six of them. I just bought a set of four (4) thru eBay for $65 + $9 shipping. Which is less $18.50 each, or about 1/2 price.

The springs come in several, color coded, spring rates. Make sure you replace with the right part number and color. Our dealer had all parts in stock; springs, dust boot, balls, ball seats and pinion shaft seals. If he can get em' so can your local dealer.

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KY Jim

05-23-2007 07:57:08

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Re: 930 Case, no brakes in reply to Jim Baxter, 05-21-2007 19:34:04

Yeah, I found that out. Got the brakes for 120 for the set, the other stuff I'm going to pick up today, they even had the brake plate that was cracked. AMAZING! Parts for a 41-year old tractor, STILL AVAILABLE! I think I'm gonna start rebuilding old tractors, instead of cars and trucks! They seem to hold their value MUCH better, too. 50 bucks a set for the springs, though. OW! Getting a new tach cable and drive,too. I can't believe you can still get parts this easy! Wow-eee! KY Jim

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Jim B.

05-23-2007 21:31:40

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Re: 930 Case, no brakes in reply to KY Jim, 05-23-2007 07:57:08

Did you read my entire earlier post? You could have saved about half the cost of the discs, about $60, if you bought the 4 discs from any number of sellers thru eBay. Check it out at:
http://cgi.ebay.com/Case-tractor-brake-disc-400RC-730-830-930-1030_W0QQitemZ120051167974QQihZ002QQcategoryZ58180QQrdZ1QQssPageNameZWD1VQQcmdZViewItem

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KY Jim

05-27-2007 17:56:08

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Re: 930 Case, no brakes in reply to Jim B., 05-23-2007 21:31:40

Yeah, I read it AFTER I bought 'em. Got 'er all back together awhile ago, now got to pour in some trans fluid. I sure hope the new pinion seals don't leak. Thanks, y'all, KY Jim

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KY Jim

06-03-2007 15:31:44

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Re: 930 Case, no brakes in reply to KY Jim, 05-27-2007 17:56:08

Well, got 'er back together last weekend, put in the new brake pedals yesterday, and poured in the trans fluid. It ran out the left side drain hole hole. Fortunately I happened to have a clean bucket handy. Tore that side back down, apparently I must have hare-lipped the new seal in installation.@#$%&!! So this week I order a new seal, and hopefully get to drive 'er NEXT weekend. The brakes worked good, what little I drove her. KY Jim

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