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  1. 4

    4640 Hydraulic Noise

    4640 Quad Range - once up to hydraulic temperature, it begins making a fairly loud hydraulic humming noise under the dash. See the video. The sound heard in the video is hydraulic noise, not the engine. When the brake pedals are depressed (wait till near the end of the video) the sound changes...
  2. 4

    Fixing Old Tractors - Another Crazy

    Yes, I too am guilty of fixing old tractors. The pic is of me and the boy dragging an Allis WC out of our "tractor cemetery" up to the shed to tackle. Pulling it is the 970 I resurrected a couple of years ago with much help from you fellows. It had been parked around 25 years ago in the calf...
  3. 4

    30 And 70 Series Light Switches

    Why do J.I. Case 30 and 70 Series tractors light switches not turn on the dash lamps when in the first position? Thanks!
  4. 4

    Deere 1508 Rotary Cutter - Blades Hit

    What would cause the right wing blades to contact the center blades on our 1508 mower? It happens when the right wing is angled down. The tips of the blades will contact each other occasionally under the right conditions. I cannot believe they need to be "timed", as each wing gear box has its...
  5. 4

    970 Hyd Filter Can Blew

    Case 970 - just went through the machine as it had been sitting still in a calf lot since the Regan administration....Everything was working great for a handful of hours. Cramped the steering to the right for a second and the brake/steering hydraulic canister blew out. Big vertical crack. Have...
  6. 4

    Attn mEl and 1370 Rod

    Gentlemen - Thank you both! Your help to another fellow in an archived post just saved me a lot of grief. Had been fighting limited hydraulic pressure on my 970 project....military troubleshooting took me to the relief in the dual remote valve that I had just rebuilt. I had that outer o-ring on...
  7. 4

    970 Dual Remote Valve Problem

    Gentlemen, I just got done rebuilding a dual hydraulic valve off of a 970. It was stuck. Tractor sat for years. Everything went fine, but I decided to do a quick check with shop air before I put it back on. Everything seemed fine until I put the upper spool in to full retract. In that position...
  8. 4

    Early RPS34 C1 Question

    Been slowly rebuilding an RPS34 in an early 970. Have come across another question I would appreciate some advice on. Please understand I am a worry wart, and this mighht be a silly question. Hopefully it is. From looking at the diagrams, manuals, etc, on the EARLY powershift, there really is...
  9. 4

    RPS34 Piston Cracks

    Hello Gentlemen, I recently bought 4 of the newer style RPS34 pistons from a salvage company for a 970 PS rebuild. I see 2 of the small pistons have several cracks in the outside (not the oil pressurized) face. Hopefully I attached a picture here...I would imagine they are just surface cracks...
  10. 4

    RPS 34 Selector Spool Ball

    Hello, Cleaning a badly sludged RPS34 control valve off of a 970. Been out to pasture for 25 years. Literally. I have removed all of the components to give it a good soaking, cleaning and seal kit. Everything came out just as the service manual shows, except the ball inside of the selector spool...
  11. 4

    970 C1 Gear/Hub Assembly

    Beginning a rebuild on an early 970 Powershift. I've found some discussion in the archives about the RPS34 C1 gear/disk or hub assembly. I see much discussion about riveting on a new disk. On my hub, there are no rivets holding the disk to the hub. The disk is splined, and held on to the gear...
  12. 4

    Don Rudolph-Smith Imp Kirkwood Il

    Don, I posted a dealer decal a few days ago of Smith Implement in Kirkwood Illinois. It wasn't the best picture. Here are a couple better ones. They are a bit worn. Never been there or had dealings there. Got the tractor at auction north of Kirkwood. I like to see these old stickers too...
  13. 4

    970 Shift Basket Shaft

    Anyone ever seen one of these break? Getting the coiled pin (which holds the shaft in place) out of the blind hole it is driven in to was a bit of a challenge. Thanks
  14. 4

    Don Rudolph - Smith Imp.Dealer Decal

    Don, Upon searching I see this dealer mentioned on the forum, but no decal photo. Attached is a photo of the decal on a 2090 I purchased at an auction near Alexis Illinois 2012 give or take a few years.....
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