Drive coupling for 126 Bis

[Amateb8]

Hello again. Just to confirm. Is this the part I need?

http://www.126fan.sk/eshop/index.php?main_page=product_info&cPath=2&products_id=44&zenid=5d5547b7eb095e7241ab5cdb34c33841

And the coupling screws?

http://www.126fan.sk/eshop/index.php?main_page=product_info&cPath=2&products_id=60&zenid=5d5547b7eb095e7241ab5cdb34c33841

[Amateb8]

Will have a go at doing this myself. I might as well check the rubber ends of the rear shock absorbers. I wonder whether it is worth changing the hub as looking quite rusty.

[bis13]

hi mate yes they are the correct parts, dont worry about a bit of surface rust on the castings the important place to look is inside at the splines and their condition. first you must remove the casting by removing the clip at the end of the driveshaft and remove the anti rattle spring in the center of the drive shaft clean these and place in a bag so they do not get lost. remove the casting by sliding it off the driveshaft and clean out the old grease, check the condition of the splines they should be very pronounced and have a slight flat on top of each spline if in doubt take a pic and post it on here. if you are happy with them then replace onto shaft refit clip and spring and repack with grease (LM if you have it). 

[Amateb8]

I have just ordered the parts from 126fan.

[Amateb8]

The parts just arrived. Interestingly, the drive coupling screws are about half an inch longer (possibly more) than the original screws. The screws are shiny'ish grey in colour, so presumably it is not made of steel.

Is it worth changing the other coupling drive screws for longer version?

I bit of a daft question. Is there a lock/cement screw available? I collect 1/8 scale radio control cars/trucks and I use lock/cement screws to keep the screws from loosening and falling off. I was thinking of applying a lock/cement (if one exists) to the coupling screw thread on top of the lock washers to prevent the screws from coming loose again

The car will hopefully be ready in time for the 25th September meet at the Windsor Racecourse.

[ciaoflyer]

The screws should have a locking washer so they don't come loose!  I have just done mine and they were there.  As for the length not sure as I used the old ones.

Also if you remove the coupling you have to remove the staked nut and this needs careful re-tightening, only do it if there is a need!

[Amateb8]

Many thanks. I did not know there were lock washers. I thought they were simple washers. I lost three drive coupling screws on the way to the RetroRides, so I could not tell whether the washer on the remaining drive coupling screw was the locking washer variety.

I will need to buy the lock washers before I attempt to replace the coupling. I'll use locktite or something in addition to the lock washers to ensure the screws do not loosen again.

I might change the drive coupling screws on the other coupling as well. I think the new ones I bought are better than the original drive coupling screws as they are longer and therefore, hopefully, more secure. I'll the originals as spares.

[Amateb8]

Is the staked nut also called rear hub nut? Please click on the link below.

http://www.ebay.co.uk/itm/Rear-Hub-Nut-Fiat-500-126-all-models-/290603295491?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item43a94e6303

[ciaoflyer]

Yep that is the one, check 126fan webshop.......very cheap!  0.60€ each!

[Amateb8]

Hooray!! The drive coupling has just been done. Took a bit of time to get the drive coupling done since the Retro Rides, as a lot has happened e.g. I had to remove my blue Bis from Proeitti and also recently acquired and working on a red Bis bodyshell.

Also had a number of things done to my yellow Bis as well:
-Annual oil change
-Greased the stub axles
-Change transmission fluid (ZC90)
-Underbody washed, undersealed and waxoyled
-Both rear suspension bump stops to be replaced (discovered whilst undersealing that I had only one whilst the other fell out whilst being undersealed)
-Replaced drive coupling as above plus replaced coupling screws of the other coupling with the longer coupling screws from 126SKfan. Applied locktite
All the above was done at an Alfa Romeo Specialist who also service Fiats and Lancias, Alfa Mania Ltd.

Took the car for a drive today - loved it!!!!!!!!!!!