The Craftmans Shop > New from Old
JCB 803 Saga
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awemawson:
Will, that was one of the checks I did. Had the CdS cell out and cleaned it, also the (very) thin glass window, which at some time I must replace as it's in two pieces! I suspect in fact thinking about it, either diesel isn't being sprayed in, or the ignition system isn't firing.

When the time comes I'll start a thread just on this subject rather than divert this one.

Meanwhile I put all the removed tracks, sprockets, idlers, and dipper parts on eBay this morning starting at 99p - hopefully they'll help someone stuck for funds sort out an otherwise marooned digger.
vtsteam:
Good to catch up here and see you're through the problems,  Andrew!

I remember the cap coming off my bar oil chamber on a Stihl chainsaw, without me noticing right away. I'd just filled up and was carrying it into the woods when I realized my whole right side from belt to shoes was covered in bar oil. It was a long squishy walk back. That was about a 1 pint spill. I can imagine the moment you noticed the overflow on the excavator return!
awemawson:
Thanks Steve - good to see you back.

Tidying up after daughters wedding today. Had to remove dry hay bales from the marquee before they dropped it (time / date unknown) and also move a pile of huge slices of oak tree that had been used as cake stand and various decorations. Just as well I got on with it, as just as I finished they came to collect the marquee and it started raining!

Having to hang about waiting for the various subcontractors (generator, chairs ,dance floor, bar etc) to collect their stuff I was looking for a little job that I could get on with but easily put aside, so decided to try and sort the wiper motor out.

It's a dual speed one with parking, and I'd already removed it to investigate and found the motor stuck solid, so time to dismantle and look further.

To remove the motor you have to remove the worm wheel. To remove the worm wheel you have to remove the mounting bracket.

Lots of pictures as I used them as an aide memoir for re-assembly.
awemawson:
So at last being able to remove the motor it was obvious that it had filed up with water and rusted nicely over the last 18 years or so  :bang:

The whole thing is assembled by sliding the components into a deep pressing that is the outer casing that has permanent magnets bonded inside. So disassembly had to be from one end. The brush holders are a pair of nylon mouldings held into the case by swaged lugs which proved quite hard to release. One of the brush springs was a total write off as it had rusted through.
awemawson:
At this stage I thought that it was a write off, but decided to press on anyway and see what could be done. Actually the armature cleaned up quite reasonably, as did the magnet holding case. I even managed to rescue the sintered bronze bush on the inner end of the armature and clean it up and soak it in oil.

Then I had to find a suitable spring from my spring hoard. I had quite a job getting one brush to slide nicely. It derives it's two speed function by having brushes set at differing angular locations.
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