Plunger spring compressor

[WozzA]

Has anyone fabricated their own version of a plunger spring service tool?

[Greybeard]

Yes.

[cotterpinkid]

Me to. It's been some years since I did. If I remember I used an all-thread arrangement with plates either end that could slide out once the units were between the frame castings. They'll still be down the shed in the 'BSA' toolbox.

[Greybeard]

I used an all-thread arrangement with plates either end that could slide out once the units were between the frame castings.

Yup, me too.

[Beezageezauk]

Hear you go WozzA lad.  I knocked this up many years ago and it worked a treat. 





Beezageezauk

[WozzA]

so...  the threaded rod does not go through the carrier column?

the idea is to compress the lot ( covers included ) outside the frame?,
put in place, then insert the carrier column through the frame, then slide out the tool sideways?..
Thanks for the reply's...   (even yours GB) 

[Greybeard]

so...  the threaded rod does not go through the carrier column?

the idea is to compress the lot ( covers included ) outside the frame?,
put in place, then insert the carrier column through the frame, then slide out the tool sideways?..
Thanks for the reply's...   (even yours GB) 

Apologies for my silly reply; I was short of time but intended to write a longer post.

My version goes through the steel column and Plunger slider. The assembly, complete with shields is compressed enough to get into the frame then the thread rod is removed. The plates, (that are roofing washers) had to be pulled out when the everything is in place. That was not ideal because it scratched the paint a little around the shield. I suggest devising a way of protecting that area if you copy my idea. To allow the nuts to be removed I made a spacer tube.

[muskrat]

I've only had mine in and out a few times in over 30 years. Didn't use any tool. Just assembled all the bits, rested the bottom cup on the frame and put all my weight (80Kg) on the top cup and slid it in. I imagine any compression tool that needs to be slid out will mark the cup.
Cheers

ps I missed the post today Woz. they'll be on their way tomorrow.

[WozzA]

I knocked up a compression tool today much like Beezageeza's so all's good..   
  Musky...  I didn't expect you to make a special trip with all that rain your copping.. 

[duTch]

 I used a 'tool' much like these, but can't really remember the full details, other than getting the booker-rod the right length and getting the kit to one end of the b-rod it was easy to do, but getting the b-rod out was a mission

 fingers

[muskrat]

Here's one on evilbay
http://www.ebay.ie/itm/BSA-Plunger-Service-Tool-A7-A10-B31-B33-M20-M24-/331802861425?hash=item4d40fddf71:g:wpYAAOSwkNZUdfKB
Cheers

[shabashow]

I did a treaded one, as well and wrapped some plastic elecrical tape around the endplates to minimise any scratches. I think I got away without any scratches on my new (back then) paint job.

[Greybeard]

I've only had mine in and out a few times in over 30 years.

That's a flipping shame!

[WozzA]

Well MY spring compressor tool was a screaming FAILURE...   
It slipped while I was screwing the nut down, The springs shot up @ a great rate of speed
& NEARLY  took my cods with them..      

So using Muskys method of brute force I managed to get them fitted...   

[duTch]

 

& NEARLY  took my cods with them..      

 Sounds like premature adulation What you doin' with the cods in there?

 That looks like a many toothed sprocket Wozz? 49 or so ?