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BSA fork bushings repair. #7495
01/25/06 3:31 am
01/25/06 3:31 am
Joined: Jan 2002
Posts: 1,282
hamden, ct.
hacksaw Offline OP
BritBike Forum member
hacksaw  Offline OP
BritBike Forum member

Joined: Jan 2002
Posts: 1,282
hamden, ct.
bsa a65 pre-oif front end. i blew the oil out of my front forks when tie-ing the bike down on my trailer. the PO said it needed to be rebushed.

my question after reading haynes is, is there any tools special needed for this work? and is there anyway of knowing if you would need oversize bushing before buying replacements.

ty.

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Re: BSA fork bushings repair. #7496
01/25/06 5:38 am
01/25/06 5:38 am
Joined: Oct 2003
Posts: 11,273
North Georgia, USA
RF Whatley Offline
BritBike Forum member
RF Whatley  Offline
BritBike Forum member

Joined: Oct 2003
Posts: 11,273
North Georgia, USA
Hackster -
There is a special wrench (same for Triumph & BSA) for the chrome seal carrier 1968-70 which I just saw on eBay. The Pre-68's use another type wrench just for BSA (I believe).

There are no oversize bushes. There's a top and bottom for each side and an oil seal.

If the legs are pitted, then try getting them hard chrome plated like a hydraulic cylinder ram.

Some people like a puller to work the legs back up into the triple tree, but if it's clean and well lubed it's not really needed.

Remember the older forks run ~30W fork oil.

:bigt:


Don't hide 'em, Ride 'em !!

RF Whatley
Cornelia, GA
Re: BSA fork bushings repair. #7497
01/25/06 11:41 am
01/25/06 11:41 am
Joined: Aug 2001
Posts: 5,135
Stone Creek OH USA
R
Rich B Offline

BritBike Forum member
Rich B  Offline

BritBike Forum member
R

Joined: Aug 2001
Posts: 5,135
Stone Creek OH USA
69 - 70 use the Triumph type tool on the fork seal holders. BSAS prior to that used their own tool. Fits over the tube to tighten/loosen the seal holder. Sometimes a strap wrench will substitute, lots of times it won't.

To install, it works best with the correct puller to pull the fork assembly into the tree and compress the spring. They show up on eBay. Or you can use a correct size broom handle threaded into the top of the tube and muscle it into place. Crude but gets the job done.

For 68 and back BSA bushings, do a web search for Paul Goff in England. Sells the best fitting bushes I have seen yet. Also sells dual rate springs and Dow damper rods for the pre damper rod front ends. All nice stuff. 69 - 70 bushes are not hard to find at all. Like previously stated, if the tubes are rough, hard chrome may save them. I even have new tubes hard chromed. Find a place that does hydraulic cylinder rods.

30W on the older front ends? Not sure about that as a blanket statement. I run 20W fork oil in my stuff and am very happy with the fork action. But then my forks are not exactly stock either laugh There are things you can do to make them work better!


Never underestimate the human ability to elevate stupid to a whole new level!.
Re: BSA fork bushings repair. #7498
01/26/06 5:01 am
01/26/06 5:01 am
Joined: Jan 2002
Posts: 1,282
hamden, ct.
hacksaw Offline OP
BritBike Forum member
hacksaw  Offline OP
BritBike Forum member

Joined: Jan 2002
Posts: 1,282
hamden, ct.
thank you men.

i have the tool for installing the legs on into the trees. the haynes i beleive says use a strap wrench in disasembly. i will have to ho back and see if i can figure what they are talking about. i imagine one would have to put the slider in a vice.

time for a reread of the manual, i still got a question on bushing fitment i am going to see if i can answer myself.

Re: BSA fork bushings repair. #7499
07/21/06 12:57 pm
07/21/06 12:57 pm
Joined: Jul 2001
Posts: 13,060
Central Virginia
Lannis Offline

Well'ard Rocker
Lannis  Offline

Well'ard Rocker

Joined: Jul 2001
Posts: 13,060
Central Virginia
RF, Rich, and all -

If all I want to do is replace the oil seals on my front fork, why must I pull the tubes out of the triple trees?

Can I not just:

1) Take off the front wheel.
2) Hold the forks steady with a dummy axle while I loosen the seal holders with a strap wrench.
3) Take the sliders off of the tubes (what tool would I use to hold the bolt from turning on the inside of the slider?)
4) Screw the seal holders off and replace the seals.
5) Replace in opposite order of disassembly.

What am I missing? Been 30 years since I done it so there's probably something.

Lannis


I stopped believing for a little while this morning. Journey is really going to be upset.
Re: BSA fork bushings repair. #7500
07/21/06 1:04 pm
07/21/06 1:04 pm
Joined: Aug 2001
Posts: 5,135
Stone Creek OH USA
R
Rich B Offline

BritBike Forum member
Rich B  Offline

BritBike Forum member
R

Joined: Aug 2001
Posts: 5,135
Stone Creek OH USA
Lannis sez:

"What am I missing?"

Springs. They preload the legs/seal holders.


Never underestimate the human ability to elevate stupid to a whole new level!.
Re: BSA fork bushings repair. #7501
07/21/06 3:42 pm
07/21/06 3:42 pm
Joined: Mar 2006
Posts: 1,011
Canada
Gunk Offline
BritBike Forum member
Gunk  Offline
BritBike Forum member

Joined: Mar 2006
Posts: 1,011
Canada
Hacksaw,
You can make a nice wrench for the fork seals really easy.
Use two small blocks of HARDWOOD like oak, maybe 1-1/4 x 1-1/4 x 2" or so.
Pilot-drill and screw in a 3/4" x #4 button head wood screw in the centre of a long side in each block, don't sink the head.
Use these in your vice to hold the seal holders at the little holes, and cushion your chrome.
Works slick.

The puller tool is even easier. But ignore the 36" rod length, 12" is better. This fork tool works so well, removing and installing the forks is 10 times faster than the recommended tool. :bigt: [Linked Image]


"he who laughs fast, laughs first"~Gunk
Re: BSA fork bushings repair. #7502
07/21/06 8:54 pm
07/21/06 8:54 pm
Joined: Jan 2002
Posts: 1,282
hamden, ct.
hacksaw Offline OP
BritBike Forum member
hacksaw  Offline OP
BritBike Forum member

Joined: Jan 2002
Posts: 1,282
hamden, ct.
thanks guys,

i have run into other problems. will post a new thread.


Moderated by  Allan Gill, Jon W. Whitley 


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