32 replies to this topic

[BaronVonchesto]

Rebuilding my gearbox and I have questions on what bearings to order.

 

Using a standard A+ 4 synchro gearbox for the 998. As far as I know this is the list of bearings I need to order. Please check that I have the right parts in mind. ive included minispares part numbers for what i plan to order

 

1 double roller bearing - AAU1365

1 single roller bearing - ADU7619

2 diff bearings - AHU1856 (these are for either side of the differential right?)

1 idler gear bearing -  TUK100320

1st gear needle roller - AAU1815

2 2nd/3rd gear needle roller - AAU1816

1 1st mortion layshaft roller - 13H9513

1 large layshaft needle roller - CHM141

 

MED also say to change the "spigot bearing" - https://www.med-engi...-spigot-bearing

Where does this go? I can't find this on minispares.

Edited by BaronVonchesto, 21 March 2019 - 03:15 AM.

[nicklouse]

http://www.minispare...|Back to search

 

 

end of first motion shaft into transfercase

[BaronVonchesto]

hmm any other way to replace the outer race besides sticking the whole body into an oven? i don't have an oven...

[BaronVonchesto]

also how would the RHP bearing compare to the MED one?

[imack]

Think you need another 13h9513 for the small end of the layshaft plus 2 bearings for the idler, one in the box and one in the transfer case. The needle roller in the transfer case really needs a blind bearing puller. The spigot bearing outer race I have removed by warming the case with a hot air gun then slamming the case down bearing side 1st on a sheet of wood to knock the race out. I've also put it in the oven while the wife was at work, it smoked the house out! I only just got away with that one!
I think MED use rhp bearings too.

[Spider]

Some suppliers have Bearing Kits, though none I've looked at cover every bearing, but none the less can save some money, with just needing to add a few bearings on top of what's in the kit.

 

Beware though, that there are many sub-standard Bearings getting about, particularly in the needle rollers. Do a search on the forum, I've posted some photos.

 

You'll most likely find the needle rollers under 1st, 2nd and 3rd gears won't need replacing. I've only very rarely found these in need of doing.

 

Check the Layshaft (if replacing it) is proper hard where the bearings run. Many are soft and some only have the thinnest of hardening and so flakes off like an egg shell. Those from Swiftune I've found good, though I'm sure there are others.

 

hmm any other way to replace the outer race besides sticking the whole body into an oven? i don't have an oven...

 

Do not ever do that !

[nicklouse]

also how would the RHP bearing compare to the MED one?

can you read? look at the pictures. they are the same.

[InnoCooperExport]

I used a bearing kit from Guessworks. If memory serves me correctly those were RHP bearings too. 

[Inno]

one beginner's question....can I use all of those advises and bearings for A+ 1275 gearbox originally fitted to SPI Cooper engine?

[BaronVonchesto]

 

also how would the RHP bearing compare to the MED one?

can you read? look at the pictures. they are the same.

 

 

i guess im confused as to what the "spigot bearing" referred to by MED is and if it isthe same as the 1st motion single roller bearing?

Edited by BaronVonchesto, 21 March 2019 - 03:13 AM.

[Spider]

 

 

also how would the RHP bearing compare to the MED one?

can you read? look at the pictures. they are the same.

 

 

i guess im confused as to what the "spigot bearing" referred to by MED is and if it isthe same as the 1st motion single roller bearing?

 

These are all slang terms but some that are commonly used.

 

The Spigot Bearing is the one that fits on the Nose of the Main Shaft, that the Inboard end of the First Motion Shaft runs on.

 

Seen here;-

 

 

and runs on here

 

 

The Outrigger Bearing is the one that fits on the Outboard end of the First Motion Shaft and nestles inside the Transfer Housing (referred to in the above extract that I posted up ^)

 

This is the Inner part of the Outrigger Bearing

 

[DeadSquare]

Moke, you really are wonderful, the way you can rustle up photos of all these Mini bits, and I do envy your ability to index parts on them.

[InnoCooperExport]

one beginner's question....can I use all of those advises and bearings for A+ 1275 gearbox originally fitted to SPI Cooper engine?

 

AFAIK those are just 4 synchro rod change boxes, so yes. Do yourself a favour and check out Guessworks website, or contact the man himself. 

[Inno]

 

one beginner's question....can I use all of those advises and bearings for A+ 1275 gearbox originally fitted to SPI Cooper engine?

 

AFAIK those are just 4 synchro rod change boxes, so yes. Do yourself a favour and check out Guessworks website, or contact the man himself. 

 

thanks

[BaronVonchesto]

 

 

 

also how would the RHP bearing compare to the MED one?

can you read? look at the pictures. they are the same.

 

 

i guess im confused as to what the "spigot bearing" referred to by MED is and if it isthe same as the 1st motion single roller bearing?

 

These are all slang terms but some that are commonly used.

 

The Spigot Bearing is the one that fits on the Nose of the Main Shaft, that the Inboard end of the First Motion Shaft runs on.

 

Seen here;-

 

 

and runs on here

 

 

The Outrigger Bearing is the one that fits on the Outboard end of the First Motion Shaft and nestles inside the Transfer Housing (referred to in the above extract that I posted up ^)

 

This is the Inner part of the Outrigger Bearing

 

 

 

Thanks a lot Moke! In which case I believe the list I have here is the full set of bearings I'll need to order?

 

1 double roller bearing - AAU1365

1 single roller bearing - ADU7619

2 diff bearings - AHU1856 (these are for either side of the differential right?)

1 idler gear bearing -  TUK100320

1st gear needle roller - AAU1815

2 2nd/3rd gear needle roller - AAU1816

1 1st motion layshaft roller - 13H9513

1 large layshaft needle roller - CHM141

PS the reason I'm not ordering a kit is because I already have the layshaft rollers. Been ordering stuff for my rebuild in bits to keep shipping and taxes low.