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Autor Thema: R26 transmission cover removal  (Gelesen 1111 mal)

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Tiago

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R26 transmission cover removal
« am: 21 Juni 2019, 22:09:59 »

Hello guys,

It has been some time since I last posted here, from past issues with the R27 which you guys helped a lot.

I am now fully restoring a R26 that was badly neglected but apparently running (until I went to see it :p). So I am inspecting everything and starting with the engine and transmission.

This is my first time dismantling the transmission, I am following instructions from the famous Barrington Motor Works manual but even so I am having difficulties removing the cover which needs to be replaced as well, I can only open the gap a few millimeters ( see photos).

I am assuming that the kickstart will come off with the cover and that the output shaft bearing is not moving with the cover (I tap it lightly). And yes, I am heating the cover (with a heat gun).

Can anyone point me in the correct direction from here? What am I missing?

Thank you for your support :)

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R26 transmission cover removal
« am: 21 Juni 2019, 22:09:59 »

bwprice100

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Re: R26 transmission cover removal
« Antwort #1 am: 21 Juni 2019, 22:38:32 »

Hi Toago

I would remove the kick start lever first before removing the cover then it is just heat but if a previous mechanic nay have used loctite a good heating will be needed.

Brian

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Herculestom

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Re: R26 transmission cover removal
« Antwort #2 am: 22 Juni 2019, 09:08:09 »

Hi Tiago,

my recommendation would be to heat the whole gear box properly and evenly up to about 120 degrees C. Sorry to say, but mama's kitchen oven will be ideal to do that.

If you have a closer look at the gear box, you'll find two or three elevated areas on the cover. The one I can see just above the drain plug. They have been placed there for a reason. With a warmed up gear box and plastic hammer (a normal steel hammer is a no-go!) you'll be able to get the cover off the box. Important to work slowly around the box and to make use of these elevated areas.

For the assembly at a later stage the kick start segment as well as the kick starter will have to be mounted in the cover. Otherwise you'll not be able to turn the segment to the mounting position. Cover to be heated up. Around 100 degrees will do.

Good luck!
Tom

rolf

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Re: R26 transmission cover removal
« Antwort #3 am: 22 Juni 2019, 10:48:52 »

try to turn the kickstarter a little more or less....you can feel if it is going free by towing a little bit the cover meanwhile
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Tiago

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Re: R26 transmission cover removal
« Antwort #4 am: 24 Juni 2019, 17:33:20 »

Thanks guys, the good advices are in the details :)

I am searching for a big enough 2nd hand oven to heat this baby up and not get myself in trouble with my wife if I use the one in our kitchen...

Will give some feedback afterwards!
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4Taktix

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Re: R26 transmission cover removal
« Antwort #5 am: 24 Juni 2019, 19:23:45 »

Hi Tiago,
you can also use a low budget solution: put a big flower-pot (terracotta/ceramic) with a drain-hole in the bottom on 2 wood strips.
Place the gearbox (or whatever is desired and fits) into it. Make a wooden lid with a sloped hole near the brim and put the nozzle of a heat gun in it and run it.
The sloped "intake" at the brim makes the hot airflow rotate downwards, and heats up the inside evenly, there it can pass off though the bottom hole.
mark a spot on the outside of the pot, to measure temperature with an IR-temp-gun from time to time. ( DIY-store )
I Did so a few days ago to take my rear-drive apart, works excellent for nearly no extra money.
20 minutes for 130 °Celsius. Depending of what the heatgun is capable of. (watts)
I attached a little sketch to make it clear.
By the way: Whilst you're inside the DIY, also look for insulated or thick gloves  ;) :D

Regards,
Sascha
« Letzte Änderung: 24 Juni 2019, 19:26:53 von 4Taktix »
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grahamjb

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Re: R26 transmission cover removal
« Antwort #6 am: 25 Juni 2019, 15:01:54 »

The Gearbox cover is being held in place by the gear shown in the attached photo because the roller bearing hits the gear when you try and remove the  cover.

You have to drift out the shaft that goes through the roller bearing as you lift off the cover - in other words heat up the cover and lift it up as far as you can and then drive out the shaft as you pull on the cover.

There are some more photos on page 5 of my build (R26 restoration by new member from Australia) that may be of assistance.

Cheers from Western Australia
« Letzte Änderung: 25 Juni 2019, 15:06:00 von grahamjb »
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