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ajk
11-15-2006 04:05:46
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Re: 1985 JCB 3cx transmission no filter??? in reply to jcb3cx, 11-14-2006 21:00:23
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If your only problem is that the fluid is coming out the filler tube it does not mean the shuttle needs an overhaul, first off you need to know that it is not overfilled, the reason the fluid level is checked with the engine running on low idle is that the fluid cooler is higher than the shuttle box, if the engine is stopped the fluid flows back into the box and will read high, drain the shuttle box down to the full mark with the engine stopped, start the engine, on low idle, check the level and top it up to the full mark, use the machine and see if it has good power both in forward and reverse, if it has the box is ok if the fluid is still been thrown out there is two reasons that could cause this to happen, one is that one of the pipes going or coming from the cooler is kinked or blocked the other and most likely is a valve on top of the box, get under the machine with a light, look on top of the shuttle box and you should see a steel pipe that runs very close to the box going from the front pump section to the valve section, in the middle of that pipe there is what looks like a piece of hexagon bar about 3 or 4" long inside that bar is a ball valve, if it sticks or the spring breaks it causes the fluid to spew out, it best to take the whole pipe off to have a look at the valve, it is not easy to get the pipe off so use a good fitting wrench so the nuts won’t go round, clean any paint or rust from behind the nuts, the Borg Warner shuttle fitted to the JCB is the same but for some small details as fitted in the Case 580F/G/K up to about 1990 and I have used Case parts on JCB’s, to answer the question about if the Borg Warner is better than the electric version both are ok, the electric change box, ZF, badged JCB is a shuttle and gearbox combined, the Borg Warner is a shuttle only coupled to a Spicer 4 speed gearbox, to remove the BW shuttle I used to remove the gearbox first, then undo the shuttle from the bellhousing slide it back on a trolley jack and lower it, you need to know what you are doing to do an overhaul, but I don’t think you need to do that by what you say, the hydraulic oil that was put in will not damage anything, the difference between the ATF and hydraulic oil would be that the fluid is more solid under pressure and has special cleaning properties, if you get it right then drain the shuttle and torque and refill it with ATF
Good luck
AJ
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