Topic: A few boo boos while changing bearings / retainers 750k4

[ChopSticks]

Hit a few bumps while trying to change the bearings. Didn't realize the retainers were only supposed to be drilled 1/8 - 1/4 ended up drilling the whole retainer for the carrier and hub (note to always research SOHC prior to doing this stuff lol)

Even with full drilled retainers they still screw in and out after I deburred so don't see an issue there.

After hammering out the right side hub the collar axle part #15

https://www.cmsnl.com/honda-cb750-four-k4-1974-usa_model482/partslist/F++17.html#results

Has these clips on both ends, I ended up hammering off one of the ends, looks like I can maybe bend it back on, but probably won't have the same snug fit as the other side, how important is this?

Secondly, is the dust seal on the carrier supposed to be easily removable? Not sure if I should be taking pliers to this, just don't want to cause more damage if it's not necessary.

Lastly, there appears to be some rust/corrosion on the collar axle above, (also a little bit inside the hub) if I remove it with sand paper does it need to be resealed to prevent future rusting? or will a little grease work?

[BobR]

 First- Im no expert but I'll try to answer your questions best I can. 1) If the retainers are drilled thru,as you stated, its probably not much of an issue. I would want to seal them off on the back side with a dab of silicone of something to keep moisture out. 2) If you are referring to the centering pieces on the axle collar I imagine it might be hard to get the axle thru the entire assembly without them in place. 3) I havent replaced the seal on my carrier so I cant say really. 4) a bit of rust on the axle collar doesnt seem like an issue to me. I'd probably just grease it up.  HTH Bob

[Bodi]

The wheel must have the centre spacer, it is NOT optional. It isn't there just to help get the axle through, it's an essential spacer between the bearings.
The spacer slides cleanly through the bore opposite the retained bearing, but not through the retained bearing bore because of the bearing stop shoulder. I assume you forced it through that side?
The "fingers" or whatever they're called just centre the spacer so it stays between the bearing races and, as a bonus, help your axle find the bore. Whatever works is OK, I've seen bent coat hanger wire in there after someone ruined the fingers.
Drilling too deep through the retainer staking should not cause any trouble. Drilling right through into the hub... the hole should be sealed then, water inside the hub would not be ideal.

[ChopSticks]

I have the collar it's just that one of the clips was knocked off and bent from hammering out the first bearing (see attached pics). I'm pretty sure I can bend the clip back to fit on the collar but it's not going to be a snug fit as the other one. But if the clips are used just to ensure the collar stays centered it shouldn't be a huge issue right?


As for the retainer I was planning to put a little loctite blue in each of the holes or should I try to fill with a little solder?

[BobR]

I have the collar it's just that one of the clips was knocked off and bent from hammering out the first bearing (see attached pics). I'm pretty sure I can bend the clip back to fit on the collar but it's not going to be a snug fit as the other one. But if the clips are used just to ensure the collar stays centered it shouldn't be a huge issue right?


As for the retainer I was planning to put a little loctite blue in each of the holes or should I try to fill with a little solder?

  As Bodi mentioned the "collar" is a spacer and has to be installed. The mauled pieces are just to keep it centered so you can get the axle thru without it dropping down. I would try straightening it out. Its not a big deal.
  After rereading about the retainer Im a bit confused. The one with four holes in it? I have two of those(one on the bike and a spare) and  both have the holes completely thru them to the top of the seal-or are you referring to something else? The top of the seal will seal them off. Bob

[ChopSticks]

Yes I'll try my best to straightening out, it was pretty snugged in there when the bearings were originally installed so hopefully it'll keep it's position centered just from the two bearings

As for the retainer you can kind of see it in the pictures previously attached. There's two one with the 4 holes as you mentioned (carrier) and another with 2 slits? for the hub. If you look at the end where the threads are you'll see 4 grooves from the drill through the whole retainers.

As for the seal, I'm having trouble getting it out of the retainer, so not sure if this is something I should be using brute force with pliers (which will undoubtedly destroy the seal or if there's a more / less barbaric way of doing it

[Bodi]

There's no reason to remove the seal except to replace it, and in that case ruining it isn't a problem...?
If the holes just go through the threads don't worry about them. If they go right through to the hub centre - that should be sealed. I'm not sure where the threads are relative to the bearing... the hardened outer race might be in the way of drilling right through?
The centering rings for the spacer are rather destroyed, but if the ring isn't broken you should be able to put it back in place and flattten it out. A bit of silicon sill hold it in place it loose. It is a serious pain to centre the spacer if it slips off to the side... not much fun if you are changing a flat at the side of the road. The bearings should not be clamping on the spacer, that means the "free" bearing has been pushed in too far. It should work itself back to the optimum location after a bit of riding, and then the spacer will be pretty loose with the axle out.