Spare part for Raleigh Equipe

[nfmisso]

Unless your are set on trying to resurrect your old rear derailleur, get a Shimano TX55. You need to know if you need a bracket mount:
http://images.evanscycles.com/product_image/image/acb/070/b66/83875/large/shimano-tourney-tx55-rear-derailleur-with-mounting-bracket-6-7-speed.jpg

Or a direct mount:
http://images.evanscycles.com/product_image/image/a12/090/60a/83876/large/shimano-tourney-tx55-rear-derailleur-direct-mount-6-7-speed.jpg

They can be found for less than $20- on Amazon. The TX55 will operate far smoother than your Huret ever could.

If you post pictures, we can tell you immediately. As Dave noted, replace the cable and housing now also.