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Fisher Pro Caliber Bottom Bracket Service

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Fisher Pro Caliber Bottom Bracket Service

Old 06-28-17, 09:47 AM
  #1  
corrado33
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Fisher Pro Caliber Bottom Bracket Service

We have an old Fisher (note, not "Gary Fisher") Pro Caliber bike at the coop. The bike needs a BB service, but it has old "sealed" bearings. Literally just bearings, they don't look to be special bicycle bearings or anything. The bearings are held in with snap rings on either side.

The BB spindle "rocks" back and forth, as most loose BBs do, but there is no adjustment obviously. I wouldn't imagine this is normal, even for this setup. You can see the play in the NDS bearing. The inner race moves, the outer one doesn't.

I have a few questions.

Can we just go on mcmaster and buy equivalent bearings and replace them just like that?

Anybody know the size of the bearings off the top of their head?

Anybody know how to get the bearings out? Are they pressed in or do they just sit in there wedged up against the lockrings? The only way I can think to get the bearings out would be to tap on the spindle and push one side out at a time.

The bike is super nice, made out of tange prestige tubing, and looks to be mostly original, so we don't want to do anything to it that would hurt it at all. Unfortunately the DS crank threads are stripped (it came to us like that), so currently it's impossible for us to remove the DS crank. We have the crank rethreading tool on order, and we have someone making a crank removal tool that would work better than a 2 or 3 jaw puller. There's no way I'm attacking it with a pickle fork or chuck removal tools. I'd rather ruin the crankset than put dents in the BB housing.

The bike is old. Older than any mention I can find of a procaliber. I believe it's a 6 or 7 speed. Certainly not an 8 speed. I also believe it has an old shimano 600 EX headset. I don't remember any other details about it unfortunately. And of course, I didn't take any pictures.

The bikes I find when I google it are labeled "Gary Fisher" procaliber. They have similar paintjobs (red orange yellow), but this one is most definitely labeled JUST "Fisher". "Gary" is not included.

Last edited by corrado33; 06-28-17 at 10:00 AM.
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Old 06-29-17, 10:54 AM
  #2  
reptilezs
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yes, no, i don't remember if the bearings land into a step/flange or not or if the axle is stepped. the bearings are usually retained with a snap ring you need to remove first.
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Old 06-29-17, 11:24 AM
  #3  
buck1973
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Originally Posted by corrado33 View Post
We have an old Fisher (note, not "Gary Fisher") Pro Caliber bike at the coop. The bike needs a BB service, but it has old "sealed" bearings. Literally just bearings, they don't look to be special bicycle bearings or anything. The bearings are held in with snap rings on either side.

The BB spindle "rocks" back and forth, as most loose BBs do, but there is no adjustment obviously. I wouldn't imagine this is normal, even for this setup. You can see the play in the NDS bearing. The inner race moves, the outer one doesn't.

I have a few questions.

Can we just go on mcmaster and buy equivalent bearings and replace them just like that?

Anybody know the size of the bearings off the top of their head?

Anybody know how to get the bearings out? Are they pressed in or do they just sit in there wedged up against the lockrings? The only way I can think to get the bearings out would be to tap on the spindle and push one side out at a time.

The bike is super nice, made out of tange prestige tubing, and looks to be mostly original, so we don't want to do anything to it that would hurt it at all. Unfortunately the DS crank threads are stripped (it came to us like that), so currently it's impossible for us to remove the DS crank. We have the crank rethreading tool on order, and we have someone making a crank removal tool that would work better than a 2 or 3 jaw puller. There's no way I'm attacking it with a pickle fork or chuck removal tools. I'd rather ruin the crankset than put dents in the BB housing.

The bike is old. Older than any mention I can find of a procaliber. I believe it's a 6 or 7 speed. Certainly not an 8 speed. I also believe it has an old shimano 600 EX headset. I don't remember any other details about it unfortunately. And of course, I didn't take any pictures.

The bikes I find when I google it are labeled "Gary Fisher" procaliber. They have similar paintjobs (red orange yellow), but this one is most definitely labeled JUST "Fisher". "Gary" is not included.
Very early Gary Fisher bikes (1988-1990, maybe 1991) were just labeled with Fisher. The procaliber was available in 1988. Scans of catalogs and some tech manuals can be found here:

Trek, Fisher, Klein, Lemond bike catalogs, bicycle brochures
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Old 03-25-19, 05:26 PM
  #4  
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Originally Posted by corrado33 View Post
We have an old Fisher (note, not "Gary Fisher") Pro Caliber bike at the coop. The bike needs a BB service, but it has old "sealed" bearings. Literally just bearings, they don't look to be special bicycle bearings or anything. The bearings are held in with snap rings on either side.


The BB spindle "rocks" back and forth, as most loose BBs do, but there is no adjustment obviously. I wouldn't imagine this is normal, even for this setup. You can see the play in the NDS bearing. The inner race moves, the outer one doesn't.

I have a few questions.

Anybody know the size of the bearings off the top of their head?


Anybody know how to get the bearings out? Are they pressed in or do they just sit in there wedged up against the lockrings? The only way I can think to get the bearings out would be to tap on the spindle and push one side out at a time.


The bike is super nice, made out of tange prestige tubing, and looks to be mostly original, so we don't want to do anything to it that would hurt it at all. Unfortunately the DS crank threads are stripped (it came to us like that), so currently it's impossible for us to remove the DS crank. We have the crank rethreading tool on order, and we have someone making a crank removal tool that would work better than a 2 or 3 jaw puller. There's no way I'm attacking it with a pickle fork or chuck removal tools. I'd rather ruin the crankset than put dents in the BB housing.


The bike is old. Older than any mention I can find of a procaliber. I believe it's a 6 or 7 speed. Certainly not an 8 speed. I also believe it has an old shimano 600 EX headset. I don't remember any other details about it unfortunately. And of course, I didn't take any pictures.


The bikes I find when I google it are labeled "Gary Fisher" procaliber. They have similar paintjobs (red orange yellow), but this one is most definitely labeled JUST "Fisher". "Gary" is not included.

OK, obviously way late for the OP, but in case anyone else happens by...
The early bikes were labelled "Fisher" but it was the original "Fisher MountainBikes" company.
This applies to the early Montare, Mt Tam, Hoo-Koo-E-Koo, Procalibre as well as other brands like early Ritchey and Burley tandems and others
The tools needed to work on the BB are: Hammer, circlip pliers, the steel block to drive out the bearing (or a large socket that's just a tad smaller than the bearing), and Loctite green bearing retainer compound.
Bearings are cheap and easy to find at bearing suppliers or on Amazon. Use the bearing number on the seal (in the case of the early Fisher bikes 6003RS) and confirm by checking dimensions (OD, ID, width).

Replacement axles are available from Phil Wood (who made the original ones for Tom Ritchey)
Adjustment is set by the use of aluminum rings with set screws on the center section of the axle. A spacer between the rings sets the width.


Procedure
Remove the circlips
Place the tool against the bearing
Give the tool or socket a whap with the hammer on each side to break the old Loctite free (bearing OD to shell)
Use the axle to drive out the bearing on one side and then the other
Note which side of the axle came from which side, though usually they're symmetrical
Re-grease or replace the bearings
Reassemble with Loctite bearing retaining compound (OD to shell) by using the tool (or socket) and gently tap to position the bearings. The fit is actually fairly loose and doesn't require a press to get the bearings in, hence the Loctite is needed to keep the bearings in position.

It's a really good system and with reasonable care and maintenance will last for many years.



Official Fisher Bottom Bracket Tool
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Old 03-25-19, 09:13 PM
  #5  
dedhed
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https://forums.mtbr.com/vintage-retro-classic/fisher-cr7-bottom-bracket-info-585830.html

fisher hoo koo e koo, bb questions

https://forums.mtbr.com/vintage-retr...cs-596176.html

https://forums.mtbr.com/vintage-retro-classic/help-83-ritchey-press-fit-bottom-bracket-960203.html

very similar
Welcome to Merlin Metalworks

Last edited by dedhed; 03-25-19 at 09:26 PM.
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