This information pertains to the PTO unit of IH tractor models 706-1486. Or possibly an adjustment. sump tube which angles down towards the bottom of the rear frame
Install a new seal on the tube. }, Any
The price includes the core charge so there is no need to return the cores, however a $75.00 credit will be refunded if you choose to return them. I've found online . pins that may hang up the separation process. There is an adjustment on the rod going into the unit. If you were having slippage the disc's are most likely toast already. "@type": "WebPage", I replaced the one with another new one which was yellow. It will break or sometimes will still be in place but be broken. frame of the tractor for repair. "@type": "Person", First off, it seems as though the pto clutch linings must be shot as the pto does a lot of slipping. New clutch discs were installed in the pto unit and the pump suction screen was checked clean and the fluid level is normal. As far as the pro, not a and job, make sure the pressure is adj. There are two dowel
Is there anything in this unit which could lock up from non-use? Remove the jam nut if there is one, and any spacers. Going to try and check pressures if I can get a set-up made with a gauge. If you were having slippage the disc's are most likely toast already. Thanks Jim, the pto was not completely rebuilt just the new clutches installed. "@type": "ImageObject", Before I pulled the PTO, I sure would take off the top link cover and make sure the PTO drive shaft is spinning.like mentioned above might even be missing. Since it was late anyway, I quit and headed for Welcome! The three springs will sometimes half-thread, or kind of bind onto the brake pistons. If the clutch PACK is the only parts being replaced no further disassembly is required. Lighting; . i doubt that you will find that pin. Mine was worn and wouldnt allow the spool valve to come up all the way. Install the seals. Thanks! d. k.", There is a small hole through the valve spool just below the threads; use an allen wrench in this hole to hold the spool from turning. as handles, pull up with a twisting action to remove the piston. "@type": "Person", "headline":"656 PTO pressure adjustment? The store will not work correctly in the case when cookies are disabled. Will at least let you know if you need to disassemble the unit or not. "url": "https://www.yesterdaystractors.com/graphics/smllogo.png", Some blocks will have a jam nut securing them and others may have a set screw through the block. "@type": "ImageObject", Installed new ones and they made a big difference with the pressure, x2 you don't need 270 185-200 is great plenty. "@type":"DiscussionForumPosting", I enjoy reading and learning what others have experienced. d. k. Mudcat, Thank you for the info.. Will try the adjustment. These seals should be
Good luck? }, Well..Pulled the rear cover. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. Going to keep spraying some in there this week and see if more will loosen up. I went to bench check the piston/clutch pack on the workbench with shop air, and had nothing. Overview Engine Transmission Dimensions Photos Attachments 1965 - 1973 Utility tractor Series map: 666 1972-1976 656 756 70.9hp* 84.4hp* 606 1962-1967 *Estimated engine power for comparison only. The only service the valve spool needs is to check the Judas pin (because it will betray you) that holds the two halves of the spool together. If no fluid could get through, the pump has been starved. Tighten the four bolts. I dont see that locknut pictured or mentioned in the manual. Also, My PTO has a square block above the valve rod which the on/off actuator rod slides through. This is a chore tractor not a field tractor but would like to be able to use in on an auger or the grinder mixer. Can anyone recommend a good repair manual? threaded holes in the top of the clutch piston. How is this changed or is their an adjustment? Note: None of this information is not meant to replace the use of a service manual. (This is only for protecting the seal). Remove the large plug (if unit was mounted in the tractor) the valve spool. SHIPPING NOTE: UPS Ground to most parts of the country is $42. Without this tool the entire unit needs to be placed in a press twice for disassembly and twice more for assembly. TractorData.com Farmall 656 tractor information Install the gear and spacer on 540 shaft. I'm hoping maybe the coupler might be gone or maybe the pick-up tube has fallen off. Does it have a lock nut(newer style spool,higher pressure) on the adjustment and a washer about 1/8th inch thick or does it have a thicker spacer and no lock nut. When they went to a lock nut and higher pressure pto they changed the spool valve, large nut with seal in and went to a thin spacer. Removing the 3 point hitch upper link bracket/cover allows access
{ Mechanical }. As far as the nut. Its not in the mower, its in the PTO on the tractor. The fluid is full and i changed the filter. If you cannot turn it by hand, it may be that you have one too many plates in the clutch pack, or the pump is not through all the discs. In 1973, the hydrostatic version of the 666 was renamed the 70 Hydro. By use of the 2 bolts
IH Tractor PTO Clutch Tool 656 756 856 1206 1066 1086 1456 ( Note Late model 86 series units may not have these taped bolt holes) The input shaft
656 problems - Technical IH Talk - Red Power Magazine Community removing this spring, it should expand to aproximately 5" in length if it
literature from the manufacturer before attempting any service or repair. If the Teflon seal rings need to be replaced, here is the procedure: Cut or pry the old ones off of the drum. "datePublished": "2014-09-05", 240 PSI for 706 - 986 (tractors without Turbo). You were supposed to put Loctite on the threads. 656 PTO pressure adjustment? Jim, the pto was not completely rebuilt just the new clutches installed. Use a new gasket or small o-ring (which ever style your unit has) in the pump housing groove for the gasket style or o-ring in the pump housing, and work the pump assembly down through the clutch discs with a turning and jiggling action. "text": "While round baling with our 656 the pto stopped and would not run the bailer with hay in it. This topic is now archived and is closed to further replies. Going to go ahead and pull the pump out and see whats going on. How is this changed or is their an adjustment? When they went to a lock nut and higher pressure pto they changed the spool valve, large nut with seal in and went to a thin spacer. back while unit is still in the tractor). in the Farmall & IHC Tractors forum followed by comments. Everything else on the tractor works so I have a hard time thinking this could be the issue but I am no expert. Guess thats the fun of it all sometimes. NOTE: If the adjusting nut was loose on the valve spool you will need to set the working pressure. replaced and are included in the seal and gasket sets I use and
"@type": "InteractionCounter", to the unit by a constant running shaft which is driven by the clutch pressure
enough to remove the snap ring. What follows here pertains to the removed PTO unit. Looked at the PTO the next day and thought that the lynch pin for the top link of the 3point was mangled a little and maybe it was interfering with the linkage for the PTO. Is this our so called Judas pin as I've heard it called here before? Inspect the inside bore of the valve body where the 2 teflon seals ride. If you feel some resistance it may be the dowel pins. Video step by step guide for proper mechanical Power Take-off (PTO) adjustments. Try to follow the hydraulic lines and see if you can find anything. Picked up everything I thought I was going to need in town today to check pressures..Came home and pulled the plug and grabbed the wrong fitting. If there is grooving in the housing it will need to be repaired or replaced. piston. Be sure to put a gauge on it after rebuild to check hydraulic engage pressure, think mechanic told us 65psi when we did our 686, not sure anymore though. If it is all the way up and pin is not sheared unit will have to be removed. Size: 11" Hub Size: 1-11/16" Spline Count: 16 International Harvester / Farmall 656 Parts - Yesterday's Tractors Red Power Magazine INTERNATIONAL 656 Tractors For Sale - 32 Listings - TractorHouse.com IH PTO Problem - Help!! - TractorByNet Farmall 656 Power: Gasoline PTO (claimed) 63.8 hp 47.6 kW: Diesel PTO (claimed) 61.5 hp 45.9 kW: Plows: 4-5 Drawbar (tested) 53.23 hp 39.7 kW: PTO (tested) . the PTO unit housing. "logo": { So whatever is wrong will require removal to repair. The control valve spool is serviced by removing the adjusting nut/block from the spool. Thread in 2 1/4" X 4"+or- bolts into the threaded holes in the top of the clutch piston. "interactionType": "https://schema.org/CommentAction", 11" Clutch Kit, IH 656 664 666 686 - Redrunrite anyways, its all back together along with a new piece of linkage(triangle piece and shoulder bolt). 656 664 666 68626563616 - Gas Engine (Eff. valve body as you loosen the two remaining bolts. Farmall (a part of International Harvester), International Harvester 4.6L 6-cyl diesel, International Harvester 4.3L 6-cyl gasoline, International Harvester 4.3L 6-cyl LP gas. Purchased this from the original owner and according to him he never remembered using the pto so this has me a little worried. The trans filter and other hydraulic functions do not affect the PTO operation at all the pto is its own self contained unit a pressure check is a great first step in no pressure is found and after any adjustments made then its time its pulled sounds like a pump failure or broken parts good luck. Using the 2 1/4" bolts as handles, work the piston down with a twisting action into the drum. A return shipping label will be provided for this core. 656 PTO Problem - Technical IH Talk - Red Power Magazine