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Front axle bolts/sump pin removal

PostPosted: Tue Aug 13, 2019 6:34 pm
by hazzard
Trying to get the A frame off my super major, axle bolts are murder tight and also sump pin. Anyone removed one and can give me some advice how to get the thing off?

Re: Front axle bolts/sump pin removal

PostPosted: Tue Aug 13, 2019 7:34 pm
by oehrick
Plenty of heat on the threads, they seem to grow together, yet I have known some who had problems with the loosening, not my experience! and drill, tap and pull out with a slide hammer would be my approach on the pin.

Re: Front axle bolts/sump pin removal

PostPosted: Tue Aug 13, 2019 7:46 pm
by hazzard
oehrick wrote:Plenty of heat on the threads, they seem to grow together, yet I have known some who had problems with the loosening, not my experience! and drill, tap and pull out with a slide hammer would be my approach on the pin.



Think I may resort to plenty of heat on axle, put the nuts back on and find a big hammer to start with. If that fails then might cut the head off the bolt and after heat find a suitable punch and knock the bolt out. Hope the sump pin will follow to allow the sump to be removed.

Re: Front axle bolts/sump pin removal

PostPosted: Sat Aug 17, 2019 10:37 pm
by AdrianNPMajor
The axle bolts will be hellishly tight in their bores. Heat is difficult to appy due to the thickness of the axle beams.
Unscew the nut a turn and a half and clout with a sledgehammer. You will get them out, but some of the nuts may not survive the procedure.
Best, Adrian.

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Re: Front axle bolts/sump pin removal

PostPosted: Sat Aug 17, 2019 11:31 pm
by AdrianNPMajor
Forgot to comment on the sump A frame pin.
It will be stepped through wear - not much, but enough to prevent simple extraction.
Didn't have the tools to cut it out, so I left my A frame attached to the sump. If you take this option, handle carefully due to the leverage of the A frame on the sump.
Few images, one of them of my Diesel Major when swapping from spade lugs to pneumatics after subsoiling.
Worked on a Volvo FM12 8 wheeler this week changing worn brake drums, shoes and adjusting gears. Reminded me of the Diesel Major.
Best, Adrian.
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Re: Front axle bolts/sump pin removal

PostPosted: Sun Aug 18, 2019 5:54 pm
by hazzard
AdrianNPMajor wrote:The axle bolts will be hellishly tight in their bores. Heat is difficult to appy due to the thickness of the axle beams.
Unscew the nut a turn and a half and clout with a sledgehammer. You will get them out, but some of the nuts may not survive the procedure.
Best, Adrian.

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Yes tight is the understatement ! As said I think I will have to cut the head off the bolt and knock it downhill with a drift after applying more heat.

Re: Front axle bolts/sump pin removal

PostPosted: Sun Aug 18, 2019 6:12 pm
by hazzard
To be honest I was wanting the sump off to replace the oil seals on the clutch end and to clean the oil strainer. My mechanic friend says leave the strainer alone (!), take the engine out, remove the flywheel, do the seals and put engine back in. Simples !! Have seen some scary pics of oil strainers so just wanted to check things out. Have a job to do carting grain off combine so will leave for a wet week after harvest! H

Re: Front axle bolts/sump pin removal

PostPosted: Sun Aug 18, 2019 7:02 pm
by SvendH
You could check to See if lube oil is rreaching the rockers when you start up again,if it does then the seive Should be ok.
But still if you want to do the oil seals then the sump must be off.