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  #1   IP: 86.183.190.72
Old 10-08-2015, 09:25 PM
Doug King Doug King is offline
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Question JCB532-120 Loadall gear fault

My 2003 machine works in 2nd gear only on forward and back. 4th gear works occasionally and 1st & 3rd have stopped working altogether. Any suggestions?
Cheers
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  #2   IP: 86.144.69.216
Old 10-08-2015, 09:32 PM
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cps140 cps140 is offline
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Default Re: JCB532-120 Loadall gear fault

Hi Doug, is your machine powershift (gears on f/r lever) Synro (gearstick)

Aiden
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  #3   IP: 86.183.190.72
Old 10-08-2015, 09:54 PM
Doug King Doug King is offline
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Default Re: JCB532-120 Loadall gear fault

It's a shuttle lever
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  #4   IP: 86.144.69.216
Old 10-08-2015, 11:36 PM
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cps140 cps140 is offline
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Default Re: JCB532-120 Loadall gear fault

In that case it could be ether electric on in the transmission itself! How it it driving in second/ plenty of power or lacking/slipping? Does the transmission oil smell burnt? I'd start with the oil, check there's plenty in it, see if it smells burnt, then drain it out and check for filings etc, check the screen in the bottom of the box when the oil is drained for debris too!

Any give us some more info and il see if we can pin point it better for you!

Aiden
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  #5   IP: 2.26.165.201
Old 11-08-2015, 12:23 AM
digger man digger man is offline
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Default Re: JCB532-120 Loadall gear fault

Hi Doug,

With the ignition on but engine stopped, place lever in 1st fwd and go up the gears 1-4, you should hear a click (or two) from the relays each time you move to the next gear. You may have to remove the cover on the side of the dash and remove the audible relay whilst doing this to allow you to hear them click. two relays are towards the top middle rows and two bottom first row if remember correctly.

Then do the same in reverse.

Seems odd to be left with 2nd fwd and rev and nothing else bar 4th occasionally, Have you bought it like this??
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  #6   IP: 82.132.228.222
Old 11-08-2015, 07:56 AM
Doug King Doug King is offline
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Default Re: JCB532-120 Loadall gear fault

Morning

The oil is fine ... changed twice ... No debris and smells ok

I've had the machine about 5 years and was ok when I bought it. The problem has been getting worse over the last 6 months.

When I select 4th gear I hear a hissing noise from the gearbox area. If I put it in 4th and wait a couple of minutes it jumps into gear but this is getting less often now.

Cheers
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  #7   IP: 2.29.64.230
Old 11-08-2015, 08:19 AM
digger man digger man is offline
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Default Re: JCB532-120 Loadall gear fault

Hi Doug,

By problem getting worse, what do you mean? How did you start to loose the gears? all at once or gradually over past months?

The hissing could be hydraulic oil trying to pass through a part open solenoid valve or the coil body can split and let water in which boils when energised.


To have
second fwd you have Fwd high + Layshaft engergised
second rev you have Reverse high + Layshaft energised.

I would remove the plugs (one at a time) from the coils on the top side of the gearbox and check for 12v. start fwd 1st, 2nd,3rd,4th then repeat in rev once you see 12v move to next coil and start from fwd 1st again.

Then report back.
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Old 12-08-2015, 11:52 PM
charlie2 charlie2 is offline
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Default Re: JCB532-120 Loadall gear fault

I seem to remember something similar to this on a 3cx powershift I think it was and the wiring loom to the solenoids on gearbox was damaged sometimes the wires touched and all was ok other times it would get some of the gears and not others. could of been manual box and the shuttle was playing up.
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  #9   IP: 81.153.124.15
Old 14-08-2015, 12:35 PM
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Default Re: JCB532-120 Loadall gear fault

Did you have any luck getting this machine sorted

Aiden
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Old 23-04-2016, 09:45 AM
quattromike quattromike is offline
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Default Re: JCB532-120 Loadall gear fault

Don't mean to hijack this thread but we have a similar machine and yesterday 3rd and 4rth gears stopped working. 1st and 2nd work as normal but when you shift to 3rd it's like it goes to neutral, same in 4th. when you click back to 2nd away she goes again. I can hear the relays clicking in the fuse box for all gears but no go. I'm thinking (hoping) its an electrical fault and not serious gearbox problems. it just moves stuff around the yard and doesn't do much but would be lost without her. Any ideas where to start looking?
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