Tool to remove Primary Chain Case

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gardenzombie

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Jul 9, 2012
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I don't appear to have anything that can be used to open the larger Cap Inserts holding things like the Primary Chain Case. I figure that perhaps, on top of lacking the actual proper tool, I'm suffering from a lack of creativity. I know there are a few places online that sell things:
http://www.nortonmotors.de/ANIL/Norton% ... art=067245
http://coloradonortonworks.com/part-categories/tools/ <Travel Size Exhaust & Inspection Nut Wrench>
, but I'm not in a position to get one of these.

Does anybody have any ideas / tricks as to how they open those large caps? My primary chain case leaked to all hell because of a horribly cold winter - I'd like to sort that out.

Thanks in advance!
 
gardenzombie said:
I don't appear to have anything that can be used to open the larger Cap Inserts holding things like the Primary Chain Case. I figure that perhaps, on top of lacking the actual proper tool, I'm suffering from a lack of creativity. I know there are a few places online that sell things:
http://www.nortonmotors.de/ANIL/Norton% ... art=067245
http://coloradonortonworks.com/part-categories/tools/ <Travel Size Exhaust & Inspection Nut Wrench>
, but I'm not in a position to get one of these.

Does anybody have any ideas / tricks as to how they open those large caps? My primary chain case leaked to all hell because of a horribly cold winter - I'd like to sort that out.

Thanks in advance!
Click to expand...

I use a couple of coins held in the grasp of a vise grip to turn them. I think a two US quarters work for the small ones and half dollars work for the large one.
 
He said he wasn't in the "financial" position to do that
If you are talking about the 3 inspection caps on the primary outer case, go to the hardware store and pick up some large flat washers which will fit the slots, clamp them in a pair of Vice Grips and you now have a tool to remove those caps.
The cost for this tool is about a buck. So maybe it's a wash.
 
For years I used the side of the flat valve adjuster wrench that comes in the tool kit. There was a guy selling a proper tool on eBay which worked for me after a little filing. May be easiest just to get a piece of flat steel strip and start cutting and filing until it fits the curve of the slot in the plug.
 
I have a tappet wrench that fits nicely in the larger ones. I forget what I did for the smaller ones. But use something with parallel sides or you risk making marks in the cap.
 
Guido said:
He said he wasn't in the "financial" position to do that
If you are talking about the 3 inspection caps on the primary outer case, go to the hardware store and pick up some large flat washers which will fit the slots, clamp them in a pair of Vice Grips and you now have a tool to remove those caps.
The cost for this tool is about a buck. So maybe it's a wash.
Click to expand...
Large washers/vice grips way to go. I flattened out the edge of the washers on grinder.
 
Guido said:
He said he wasn't in the "financial" position to do that
If you are talking about the 3 inspection caps on the primary outer case, go to the hardware store and pick up some large flat washers which will fit the slots, clamp them in a pair of Vice Grips and you now have a tool to remove those caps.
The cost for this tool is about a buck. So maybe it's a wash.
Click to expand...
 
you probably already have the tools in your toolbox , the open ended spanner/wrench normally has a nice flat - try a few one should fit the big caps and another
the small one , just take your time to select a nice tight fitting one, you then also have a nice lever to open them with.
Note you are using the back of the spanner/wrench jaw here and keeping the tool parallel to the chaincase .
 
I just use a large flat screw driver but put it on its side edge, once loose then just use the screw drive the nomal way.

Ashley
 
I use a 'C' spanner I've had in my toolbox for years. The curve on the back of the spanner fits nicely in the plugs. I wrap some blue painter's tape around it to avoid marking up the aluminum.

Looks like this:

Tool to remove Primary Chain Case


I actually have three of them - one is punched for a ratchet, which I use to tighten the exhaust nuts on my Nortons, and the third has a pivot on the spanner, to work with a range of suspension adjusters.
 
I made my own, ensuring a neat fit in the slot. I made the opposite end so that I could ram it into a spare 1/2 drive tube socket. Its big and very controllable, so it cant bugger the caps. Using a long toggle bar, means you have complete control when undoing. Both my bikes had knackered slots on all the caps, so now the new ones are going to stay looking like that on my restored 750. I don't care what the 850 looks like so long as it goes and goes.
 
Before I bought the proper tool, which is a beauty, I had a small piece of aluminum plate that I ground a curve on to suit the plug then gripped with an adjustable spanner. 5mm thick from memory. Worked well. No damage to plugs.
Coin or washer on the small one.
 
I made a tool out of a piece of 5 x 40 mm. Bar about 300 mm long, end shaped to fit curve, also added 2 hardened pins at 20mm centre to be used as a drive to undo the caps on the hydraulic brakes. Cost bugger all!!!
 
SteveA said:
http://www.ebay.co.uk/itm/231012848366?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
Click to expand...

Nice one Steve. I've just ordered one, I can stop using my old Raleigh bicycle spanner now !!
 
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