3CX JCB 1997 Maint. questions

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gecko.cx
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3CX JCB 1997 Maint. questions

Post #1 by gecko.cx » Fri Jul 12, 2019 10:28 am

Hi All (first post - please be gentle),

I've just taken delivery of my first JCB, or more correctly, a mate just took delivery for me as I'm out of the country.
It was quite cheap, so I expected a 'greater than usual' number of maintenance items to attend to and it seems I won't be disappointed.
In summery, it's 4wd with shuttle shift, 4in1 and extender hoe (serial: 450000 range)

My first question is about seals. One stabilizer leg is said to produce oil at a rate that'd make a Texan blush.
Does everyone stick to OEM seals, or are the indian(/other) substitutes just as good?

Second question: Is there a parts list available?

I'll work my way through fluids and filters
The sort of things that are slowing me down are filters. JCB's site suggests five filters that may be suitable for the SyncroShuttle:
581/M8563
581/M5863S
581/R2034
32/915500S (noted as 120 long High Pressure)
02/100284A (noted as: Short)

Now the manual does mention 10um running-in and 25um service filters, but no indication which is which.

That'll do for now - undoubtedly there will be more questions to follow.


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Re: 3CX JCB 1997 Maint. questions

Post #2 by gecko.cx » Thu Aug 22, 2019 7:24 am

Hi again,
I found a paper copy of the parts list (very disappointing).

What I'm now chasing is a copy of the Operators Manual (9801/5350) if anyone has a copy to upload.


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Re: 3CX JCB 1997 Maint. questions

Post #3 by gecko.cx » Tue Dec 10, 2019 12:41 pm

In case anyone cares, I'm progressing spasmodically (living on the wrong continent and all that) .
The extradig and LH stabiliser seals have been replaced as both had massive external leaks.
The RH stabiliser and at least one of the lift rams has internal leaks and will be dwelt with at the next opportunity.
Coolant has been substituted for the rusty water.
Engine and fuel filters have been replaced and naturally the engine oil as well.

I bought a soft copy of the operators manual from a dodgy looking online seller and was happily surprised with what turned up.


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Re: 3CX JCB 1997 Maint. questions

Post #4 by gecko.cx » Sun Apr 11, 2021 9:08 am

Mostly the referb has been going well with a few electrical problems traced to intermittent relays (yes I know they are meant to be intermittent, but that's not what I meant!!)

Finally got the wear pads in in for the extradig.

Turns out what I was missing was beer.
With beer, enough mates turned up to man-handle it apart and back together again


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Re: 3CX JCB 1997 Maint. questions

Post #5 by Jeremy Rowland » Sun Apr 11, 2021 10:56 am

gecko.cx wrote:Mostly the referb has been going well with a few electrical problems traced to intermittent relays (yes I know they are meant to be intermittent, but that's not what I meant!!)

Finally got the wear pads in in for the extradig.

Turns out what I was missing was beer.
With beer, enough mates turned up to man-handle it apart and back together again


Image



Yes beer does normally help :D

Jeremy


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Re: 3CX JCB 1997 Maint. questions

Post #6 by gecko.cx » Thu Sep 30, 2021 11:36 am

Question about wheel studs.

A few days ago, I noticed oil weeping past two rear wheel studs.
I removed the wheel and it's pretty clear the last time the the hub was apart, it was reassembled using several cartages of silicone instead of replacing the O-ring (chose to ignore that for now).

The fun part was that two studs were "a bit loose" while another spun freely. I was able to play mix-n-match to find two studs/hole combinations that would fit tightly, so I'm only down one at the moment.

This got me thinking about 'why they were loose'? Best I could come up with is they've been run with loose wheel-nuts for a while or rattle gun abuse.

Any other plausible reasons the studs would become loose?


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Re: 3CX JCB 1997 Maint. questions

Post #7 by Jeremy Rowland » Thu Sep 30, 2021 4:52 pm

Ian, it sounds very much to me that the wheels were run with loose nuts at some time in the past, this usually causes the studs to become loose in the hub a common fault when I used to work on the trucks many moons ago now, so long as they are not very loose you may be able to get away with them, plus you could put some Loctite on the studs where they fit in the hub to help hold them in place, that is a bodge to put it very politely but if it gets you out of trouble then it's worth it. :thumbup:

Jeremy


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Re: 3CX JCB 1997 Maint. questions

Post #8 by gecko.cx » Fri Oct 01, 2021 2:01 am

Thanks Jeremy, - that's the good version (ie. not ongoing).
I'm confident of the studs I've shuffled and I've got a few new studs on order. Hopefully the new knurl will be proud enough to grip the sloppy hole.


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Re: 3CX JCB 1997 Maint. questions

Post #9 by gecko.cx » Thu Nov 04, 2021 7:38 am

I now claim the rank awarded to those who have replaced the slew ram seals.

a bit late to ask, but is there a 'good' way to get the cylinders back on?
I kept popping the plastic seal retainer out of position.

I tried to get some 1" UNF all-thread to screw it in, but no one locally had any stock.
I ended up using the tractor to push it together - it worked (eventually), but it left me wondering what technique other people use.


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Re: 3CX JCB 1997 Maint. questions

Post #10 by mechman » Thu Nov 04, 2021 12:20 pm

gecko.cx
What were the symptoms/reasons showing that necessitated the seals being changed? We have the 3c 2 and the back actor can be slewed by hand, it does try albeit very slowly ( probably king post problems). :?
Norm.


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