No passwords, No popups, No cost, No AI:
we earn from 'affiliate link' purchases, making the site possible

Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

  The authoritative public forum
  for Metal Finishing since 1989

-----

G. M. THM 400 automatic transmission steel clutch plate finish

I'm rebuilding a G.M. THM 400 automatic transmission. Instructions are to hand sand steel clutch plates to an 8 to 30 microinch finish. Sanding parallel to plate rotation using 120 to 220 grit emery cloth or sandpaper. I've found a table explaining various grits & types of sandpaper, but no data correlating grit to microinches. Thanks in advance for any help or input.

Marcel Service
mechanic - Covina, California, USA
2004

32 is about what you get with a reasonably decent boring operation. A decent honing job should yield about an 8 finish. For a little more info, see question and responses to #26557 on this website

Tom Gallant
- Long Beach, California, USA
2004

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: