Fork Seals and Oil

Message

3mcoach · #1 Unread post by **3mcoach** » Wed Jul 04, 2007 3:17 am

I recently purchased a Honda CB450S which is leaking fork oil. I need to replace the seals but have no owners manual or shop manual. Can anybody give advise on how to change seals? Also, what type of forkoil do I use and how much of it goes in each fork? (Somebody told me to use transmission fluid...does that sound ok?)

Johnj · #2 Unread post by **Johnj** » Wed Jul 04, 2007 4:25 am

I'm sure if you look around you can find a manual for that bike because you must disassemble the forks to replace the fork seals. And I suggest you put fork oil in the tubes. My Motorcycle and ATV Repair Manual 1945-85 says a CB450SC needs 6.3oz/185ml in each tube.

slimcolo · #3 Unread post by **slimcolo** » Wed Jul 04, 2007 5:26 am

Really do need a manual. Many older bikes esp. Honda did use ATF or motor oil(30 wt). Not sure which ATF. I have one manual call for Dextron and another call for typeF on same bike. Also make sure you have right amount of oil. Most forks need more oil after a teardown than just a change. Some forks, like Maricozzi use different amounts in left and right sides.

I've seen fork oil from 1.5 wt to 40 wt. Also if bike has sat you want to be extra careful to get all debris out of damping system. Kerosene and a small brush (nylon,prefered or brass not steel) work good, if you don't have a parts washer. Clogged holes may need a wire or drill bit to clean.

blair · #4 Unread post by **blair** » Sat Jul 07, 2007 7:36 pm

My local public library has an impressive collection of automotive manuals. And if they don't have it, they're part of a nationwide interlibrary loan system. Yours is probably online and searchable. It might take a few weeks to get the book, but it's free, and if it's out of print it might be your only choice.