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Whiskers 54

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  1. OK hi there Members So I was able to obtain a seal kit that had all the replaceable parts in it as pictured in my service manual exploded parts view. The plunger seal does indeed go in the valley in the middle of the plunger. I warmed the old seal while still on the plunger by dipping it into hydraulic oil in an old deep fryer .Held plunger in a vice with a 7/8 hole drilled in a 1x2 board with a hacksaw cut from the end inward the hole to allow some give. Used a combination of non marring tools (brass o ring remover ,reversed snap ring pliers, dental picks etc fingers to get seal off . Warmed new seal in oil and stretched with tools as needed to slide onto the spool from the spring retainer end so as to not catch the seal lip and damage it. Placed it into the valve body backwards to aid in recompress seal while it cooled. Took back out and installed valve stem with stem seal, spring washer ,valve spacer ,spring, and spring retainer. Push rod and retaining ring etc I was surprised how elastic the seals and boots could be. Hope this helps for some one resealing a master cylinder instead of buying a new one.
  2. jimb2 Thanks for the service book diagrams. My 2400a uses an external disc operated equalizer valve to equalize pressure in masters when both pedals pushed together. The rest of it looks similar to yours . My main issue is that the gland seal which has an ID of 3/8 in and OD of 7/8in .It does not appear to be able to stretch enough to place in the slot in the middle of the piston or what my book calls a plunger. Yet there is a seal there (photos) I wonder if it should be on the plunger shaft next to the spring retainer .as it would appear in the exploded views ?
  3. Snoshoe : The orifice you mentioned is in the exit end of the tapered screen (one assembly)which I soldered into the 5/16 OD copper pipe pictured. Done to secure it inside the 5/16 rubber connector line with the tapered screen toward the incoming fluid from the oil cooler front of the radiator. It did have two screens one fine mesh plastic both in the same line leading to the master cylinder for RT wheel which I was having trouble getting brakes to bleed well and hold pedal .I suspect oil starvation. Correcting that with only the metal screen/orifice in the common supply line.
  4. Ordered rebuild kits for the master cylinders. My repair book exploded view shows the plunger seal in a different place than what it is on the plunger when disassembled. In the photos attached, the current seal is in the plunger groove closest to the push rod end. The repair book shows the seal to be on the plunger between the plunger and the spring retainer. It has worked this way however I see no way to put the replacement kit seal over the 1 inch diameter plunger when it only has a 3/8 inch hole in it. It will go on as shown in the repair manual. Can someone explain where the seal truly goes? And is the existing seal just to reduce friction? My brakes have a keep fill system which takes return fluid from the oil cooler in front of the radiator with a T-line containing a screen which leads to the brake assemblies. Since the 5/16 ID line is larger than the tapered screen I soldered a piece of copper tube onto the screen to hold it in place. Thanks for any input on the proper seal placement.
  5. Thanks to all of you on this topic .I did learn that 66 series tractor loaders use the same type valve bodies as the 2400 a tractor with a 2050 loader . Only difference being that the outer r/h side is a 4 position spool with the float detent balls. I simply swapped the three position spring centering assembly to the new body and spool as well as the portion that threads into the end of the spool . It now operates as desired .
  6. OK Red Power forum members. Thank you for your input on my 2050 loader issue .So to date I have swapped the hoses on the control valve assembly from the ports 4 on top from the middle boom section with the outer bucket section. No improvement in operation. I have bypassed the bucket cylinders by connecting hose cap ends together and hose rod ends together. Still has the same hose loading only in the bucket roll down. I have had both spools out and checked for damage none found. O rings replaced while apart . The bucket will function as desired if connected to the middle boom section . However then the boom connected to the outer bucket valves section will operate incorrectly as in erratic up/down and bucket will try to roll down . I was advised by an older IH shop tech in KS that the purpose of the poppet valves 1 each in between the two hose ports are suppose to stop boom drop when in valve neutral position. Same for bucket poppet when loaded with material. Reverse fluid flow thru should open the spring closed poppet valves to return fluid out the return line to reservoir as the pressure line supplies fluid out the opposite hose to the appropriate cap or rod end of the cylinder. I did pull the poppet out of the bucket valve bank and see nothing wrong with the spring or poppet . Due to a design flaw (the retainer snap ring has 1/4in gaps at the ends ) allowing rain water to seep down around the area above the uppermost o ring there was corrosion between valve and casting sleeve. Normal procedures to remove it did not work . After soaking with P/B blaster and heating the casting in oil and chilling the valve assbly with freon. A fine thread 3/8 bolt welded head down on the slotted end using a modified pipe nipple I was able to extract the poppet assembly. MY request is to find a flow diagram of the valve fluid flows during the different spool positions so that I can identify where the issue may be .I have service manual GSS-1372-1 It does not show. I would like info from GSS-1278-A which is the Hydraulic Valves manual . I under it may have flow diagrams Any one know a dealer or individual that has this info ? I could get text or Emails or copied pages Thank you all very much! Just a side note I have operated the valves with the unit on the tractor with the open ends of the hoses directed into a bucket . On the boom valve fluid flows out only 1 hose at a time depending on up or down selected The bucket hoses have fluid flow out only 1 hose in the curl up however both hoses at the same time in roll down ! To me cant have pressure on rod and cap end of a cylinder at the same time. Granted the cap end would have a larger surface area than the rod end. Thus may be why it slowly moves to the dump position . I am apparently missing something in T&D Jeff Any one with any old 2050 valve assemblies?$
  7. Thanks to all who have responded on the slow bucket dump issue. So far I have swapped hoses around ,bypassed quick disconnects and swapped hoses from the loader lift side to bucket dump side(causing issue to swap to the loader up and down with bucket dump to be ok. Keeps going back to the problem with fluid flow restriction on bucket roll down valve assembly. I now have exploded parts views via 2050 parts manual. My question is for anyone familiar with what is a West Pullman manufactured assembly for I/H. It appears that I should be able to disconnect the linkages to the control valves and unscrew the retaining cap/sleeve and remove the horizontal valve assembly. Also both valve bodies have a spring loaded back flow check poppet held in with a snap ring. Any input as to disassembly order, previous experience or opinions are appreciated. Thanks
  8. Not sure if i am posting this in the correct place Thanks for the advice I will pull the hoses off the control assembly to ck for delamination/obstructions I did read in the installation of valve body to tractor not to over tighten mounting bolts as over time may result in valve /spool assembly binding. Still would like to know where to get a manual with an exploded view/parts source?
  9. Thanks for the suggestions .I have since bypassed the bucket cylinders by connecting the hoses on each bucket cylinder together at each cylinder with couplers . Still have the same issue with high resistance to fluid flow only in the joystick dump ( roll down mode) I also removed the hose quick disconnects and direct connected the hoses to the joy stick control assembly. Same result .It appears to be in the valve body of the control assembly. No external leaks there but could a internal o ring leak or sticking spring loaded spool valve be the issue? I would like to get a repair manual with an expanded view and/or parts book Any suggestions greatly appreciated. Its on a 1972 2400A diesel that I have had for many years and this is a relatively new issue All other hydraulics work fine Thanks Jeff
  10. IH 2050 loader loads hydraulics excessively in dump/ roll down . Much slower than curl bucket up Suggestions on cause, test ,fix . Could it be fluid bypassing in one of the bucket cylinders'? However it seems to hold a load without drooping toward dumping I suspect some thing in the joy stick valve body
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