Author Topic: Suzuki T20 crank bearing pegs  (Read 323 times)

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Offline tore

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Suzuki T20 crank bearing pegs
« on: April 15, 2021, 07:53:38 AM »
Those small pegs preventing the crank bearings to turn, is it possible to drill those out?
Currently stuck and too little to grab on to pull those out.

Tore

Suzuki T20 1969
RD350B (Indonesia) 1975
BMW R1150GS Adv 2004
HVA Roulette 1957
NV 125 1955
https://www.youtube.com/watch?v=k85mRPqvMbE

Offline Bluehaze

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Re: Suzuki T20 crank bearing pegs
« Reply #1 on: April 16, 2021, 12:34:24 AM »
Try carbide drill bits.
Or maybe alum?

Online Esmerelda

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Re: Suzuki T20 crank bearing pegs
« Reply #2 on: April 16, 2021, 07:23:32 AM »
Those small pegs preventing the crank bearings to turn, is it possible to drill those out?
Currently stuck and too little to grab on to pull those out.

High Tore EDM or spark erosion  will drill through anything conductive https://www.youtube.com/watch?v=rpHYBz7ToII .

In some engines its possible to drill a small hole to get behind or underneath the bearing peg and move them with a pin punch then close the drilled hole with a weld
Best regards

Esme
The older I get, the faster I was!

Offline tore

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Re: Suzuki T20 crank bearing pegs
« Reply #3 on: April 16, 2021, 07:34:08 AM »
Try carbide drill bits.
Or maybe alum?
Thanks Bluehaze
There are steel seats for the bearings so Alum is not an option.
I have not used carbide drills. Heard those are very britle. Need probably 2.5 or 3mm to drill out those pegs. Was not sure if those actually will drill through the bearing materials. I will try.

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Tore

Suzuki T20 1969
RD350B (Indonesia) 1975
BMW R1150GS Adv 2004
HVA Roulette 1957
NV 125 1955
https://www.youtube.com/watch?v=k85mRPqvMbE

Offline tore

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Re: Suzuki T20 crank bearing pegs
« Reply #4 on: April 16, 2021, 08:19:44 AM »
Those small pegs preventing the crank bearings to turn, is it possible to drill those out?
Currently stuck and too little to grab on to pull those out.

High Tore EDM or spark erosion  will drill through anything conductive https://www.youtube.com/watch?v=rpHYBz7ToII .

In some engines its possible to drill a small hole to get behind or underneath the bearing peg and move them with a pin punch then close the drilled hole with a weld
Best regards

Esme
Thanks Esme
EDM seems interesting. Appears to be a project of its own though.
Tore

Suzuki T20 1969
RD350B (Indonesia) 1975
BMW R1150GS Adv 2004
HVA Roulette 1957
NV 125 1955
https://www.youtube.com/watch?v=k85mRPqvMbE

Offline tore

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Re: Suzuki T20 crank bearing pegs
« Reply #5 on: April 16, 2021, 12:18:44 PM »
Maybe an option for removal of stuck screws in steel:
https://www.ebay.com/itm/2KW-Portable-EDM-Small-Hole-Drilling-Cutting-Removing-EDM-Spark-Erosion-Machine/313472325875

A bit pricey toy though. Fun is that you can drill a hex hole in the screw and use an allen key to screw it out  :)
Tore

Suzuki T20 1969
RD350B (Indonesia) 1975
BMW R1150GS Adv 2004
HVA Roulette 1957
NV 125 1955
https://www.youtube.com/watch?v=k85mRPqvMbE