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Messages - Dolomite_
1
« on: Today at 08:16:22 PM »
A stupid question but is the roller bearing damaged and worn? The gearbox on Ratty had over 45k on it (probably over 50k as the PO had fitted a mini Speedo on the bike at some point). When I checked the roller bearings they were fine, no play, no nasty rumbling and no tight spots. The rest of the engine was in a terrible condition as a result of the PO blasting it with a sand gun. The roller bearing was good to go again but unfortunately the shaft was worn beyond repair and I purchased the two gear shafts from Ted. I have no idea how many miles were on that gearbox but again the roller bearings were absolutely fine.
The bearing doesn't feel great, quite gritty when spinning it.
2
« on: Today at 07:56:31 PM »
I've tried heating the collar, clamping the bearing and giving the shaft a wack. Not budging at all.
There does seem to be a seal between the bearing and collar. There is no way to remove the gear, the groves are too big for it to slide off the other way, the bearing and collar are holding it on.
3
« on: Today at 07:13:49 PM »
The shop manual doesnt show a seal between the collar and bearing/bearing and sprocket. 
4
« on: Today at 06:44:22 PM »
If you mean the part of the shaft where the oil seal sits I'm pretty sure the bearing will come off - just dont heat it and destroy the O ring.
Ill have to dig my vice out from the garage. I didn't think of clamping the bearing. I didn't want to damage it too much but I think that's the only way.
5
« on: Today at 06:34:50 PM »
How to remove the output bearing.
Remove the gear next to to bearing, fit the shaft loosely in a vice so not to mark it and allow it to move and knock the bearing off the shaft so that it moves away from the collar, once it moves a little it will come off easily. Protect the end of the shaft when hitting it. Once off there is a really thin oring fitted between the bearing and the collar, on no account try to remove the collar unless it’s ruined. Do not under any circumstances insert anything between the bearing and the collar.
From a trusted source 
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I've added the picture, it didn't work at first. I don't think the bearing first over the collar? The collar seems to be bigger than the bearing. Its the collar that I cant seem to remove. I've not tried heating it up yet, I'm going to try later.
6
« on: Today at 04:13:54 PM »
More bearing headache. I managed to get one of the 5205hs bearings off easily but the other one has a spacer type thing that closes of the hole where the output sprocket it. because its been exposed and dirty and wont budge. I cant get my bearing puller behind the bearing and I don't want to risk trying to pull the bearing and spacer off by the gear sprocket. Has any had any luck removing it? 
7
« on: May 24, 2024, 01:26:00 PM »
I'd complete an more in depth version of Bryan's assessment.
If you've transmitted any grit or other debris into the bearing by cleaning, then they can sound bad.
Really wash it independently (only tgat shaft and bearing) with something like paraffin, then clean that all with strong mix of washing up liquid to completely remove anything that's in the bearing.
Completely dry it with compressed air or hairdryer, then you can recheck for any unwanted radial movement.
Now put clean engine oil into bearing and assess what it's like for smooth movement.
Thats a good idea. But I think I'm going to be better safe than sorry and while its fully stripped replace parts that can be replaced. Some of the bearings in the crank case were pretty bad. I'll clean them up once they're off and if they seem ok see if anyone would like them.
Just spoke to John http://johnoldfield.co.uk/ and he has some in stock so I've ordered them. I'm already in deep so whats another £100 :'(
It generally takes alot to wear them, any unwanted grit makes them feel awful if not cleaned out.
8
« on: May 24, 2024, 01:07:58 PM »
Yes they are pressed on, is the bike going to be a daily driver high mileage or an ocasional weekend use?
If 1 i would pay out
If 29 i would put engine oil in them and if smooth and quietish use them as if it dont work you only need lower case off to replace and your time
Weekend use but thinking about it and the gunk that was in the sump I think its best to replace them then. Do you know any other places that might stock them? Are they a very specific bearing? I've not rang up anywhere yet but just looking on google and only yamiya and cmnsl have them.
9
« on: May 24, 2024, 12:56:54 PM »
Possibly made a cock up. Ive been cleaning all the transmission gears, shafts etc and it looked like the 5205HS bearings are really stuck on. So I left them on and cleaned the parts with degreaser and petrol. Before cleaning they sounded perfectly find and didn't feel rough but now they are a bit noisy and don't feel as smooth. I'm not sure if I cocked up or its because they have no oil on/in them anymore. I've sprayed a bit of bulldog BDX penetrating oil/lube on them and they seem a bit better. Would they be safe to use or should I fork out the almost £100 for 2 new 5205HS bearings? Does anyone know any sources other than yamiya? Should they be hard to get off? Are they pressed on? 
10
« on: May 23, 2024, 09:23:33 PM »
Well I didnt check the parts count correctly and only ordered one from David silvers and now its saying 0 in stock. I've measured the needle bearing and its 21mm inside 26mm outside and 15m wide. Does anyone know where you can get a needle bearing of that size, google has come up with nothing.
Or does anyone have one spare its 91022333018 superseded by 91022377008.
11
« on: May 16, 2024, 09:37:14 PM »
So just a drop of oil in the cylinders too?
12
« on: May 16, 2024, 07:49:48 PM »
It's almost time to start putting my engine back together, just waiting for the last bits to be aqua blasted and bolts zinc plated.
Just thought I'd ask the question again, what assembly lubes would people recommend? I've seen quite a few mentioned.
Should I put anything in the cylinders? I've seen people mention a few drops of oil, graphite lube, and nothing.
13
« on: May 01, 2024, 06:52:01 PM »
I've decided to replace all the bearings as the gear selector bearing is pretty rough and the engine is stripped so I may as well. I can't quite find a bearing for part 91022333018. In the parts manual its bearing, needle, 20mm. On PDF page 25 ( https://www.dropbox.com/s/7pieydvznvy7nhp/CB350_F_F1%20Full.pdf?e=7&dl=0) its showing as a bearing inside a metal cylinder, does the bearing come out and a new one slide in? I know its 20mm but don't know the other measurements. Has anyone found a replacement?
14
« on: April 21, 2024, 09:00:30 PM »
Selling a set of 2 green main bearings 13317-333-003 that I dont need after sizing up the bearings.
They have only been used to measure clearance with plastigauge.
15
« on: April 12, 2024, 01:24:59 PM »
I took 2 measurements each time. Cleaned them in between and made sure it was the correct direction. I've ordered some blacks anyway as I need to do an order at DSS. Just need to wait for that and some more plastigauge. I'll take pictures next time too.
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