Author Topic: 1976 CB550F1 (what have I let myself in for) Project  (Read 5119 times)

Offline Oddjob

  • SOHC Jedi
  • Posts: 3630
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #75 on: June 10, 2020, 06:57:01 PM »
Seem to recall that you may be able to use one of the spindles to pull the rotor off, might be rear wheel, might be swinging arm. Might be I not remembered correctly.

The rotor puller is for sale on E-Bay, might be cheaper to buy a proper one rather than by a generic blind puller.
Don't play stupid with me, I'm better at it

Offline eight0

  • SOHC Member
  • Posts: 115
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #76 on: June 10, 2020, 07:03:33 PM »
What about the case bearings? Don't you need a blind puller/slide hammer for those?
1x 1976 CB550F1
1x KTM EXC 300
1x CBR600 FW
1x CX500

Offline Oddjob

  • SOHC Jedi
  • Posts: 3630
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #77 on: June 10, 2020, 07:09:36 PM »
You tend to use a slide hammer to remove the primary shaft, however the footrest bar engine bolt is a perfect fit, leave one of the footrest on and use that as the sliding bit. All the rest of the bearings either come out when the cases split like the gearbox bearings or you can just knock them out with a drift. The only thing that really needs to be removed is the rotor and that ONLY if your replacing the crank seal behind it, otherwise just leave it on.
Don't play stupid with me, I'm better at it

Online Bryanj

  • SOHC Jedi
  • Posts: 7090
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #78 on: June 11, 2020, 07:15:39 AM »
You dont need a puller for the primary shaft, remove the oil pump and use a soft drift on the end of the shaft you can see. As to the rotor, before i bought the correct tools i used to take the crank to my local Honda dealer and give him a few pounds to just pull the rotor. Dave Silver sells the genuine Honda tool which pulls all Honda rotors for about £40 from memory and i think he does a pattern one as well cheaper.
I find the cross shaped ones easier to use than just the bolt ones.

Offline eight0

  • SOHC Member
  • Posts: 115
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #79 on: June 11, 2020, 09:45:30 AM »
Thanks for the tips guys.

Sounds like I don't need any fancy tools really. I'll try the rear wheel spindle trick, I saw someone on Youtube doing that on a CB650.
I've bought some parts organisers, a fresh box of freezer bags and some JIS impact bits so I should be good to go.

No doubt I'll have more questions. I'll post pics as I go.

Sending the frame, tank and seat off next week for paint/powder which is exciting.
1x 1976 CB550F1
1x KTM EXC 300
1x CBR600 FW
1x CX500

Offline Oddjob

  • SOHC Jedi
  • Posts: 3630
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #80 on: June 11, 2020, 03:00:05 PM »
You dont need a puller for the primary shaft, remove the oil pump and use a soft drift on the end of the shaft you can see. As to the rotor, before i bought the correct tools i used to take the crank to my local Honda dealer and give him a few pounds to just pull the rotor. Dave Silver sells the genuine Honda tool which pulls all Honda rotors for about £40 from memory and i think he does a pattern one as well cheaper.
I find the cross shaped ones easier to use than just the bolt ones.

Bryan your cowboy hat is slipping  ;D ;D

Why take a chance on damaging the end of the primary shaft, especially as there is a small gear there IIRC, the footrest bar fits perfectly, no reason at all to take a chance.
Don't play stupid with me, I'm better at it

Online Bryanj

  • SOHC Jedi
  • Posts: 7090
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #81 on: June 11, 2020, 04:34:33 PM »
Ive never had one that tight and always have brass rod of assorted sizes in toolbox, sorry not brass Admiralty Bronze and no im not saying where from!

Offline eight0

  • SOHC Member
  • Posts: 115
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #82 on: September 06, 2020, 07:45:09 PM »
Well finally after moving house and now having my own garage and workshop setup I took the plunge ans split the cases.

[ Guests cannot view attachments ]

Lots of sludge in the bottom but no surprises really. Gears and dogs all look in good condition. No play in the bearings.

Do these shells look like they can be re-used? I'll just post a few images as they're all similar.

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]

Also, I want to get the engine cases, head etc painted, the barrels re-bored and a slightly damaged fin repaired. Is there a one-stop shop that someone can recommend to do this for me?

Cheers
1x 1976 CB550F1
1x KTM EXC 300
1x CBR600 FW
1x CX500

Online Bryanj

  • SOHC Jedi
  • Posts: 7090
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #83 on: September 06, 2020, 08:34:35 PM »
See Trigger for the work and those shells are not the best but OK to use if the clance platigauges ok

Offline eight0

  • SOHC Member
  • Posts: 115
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #84 on: September 14, 2020, 12:13:05 PM »
Before I send the engine parts off for acid dipping,  Is this an issue? I felt no play in the bearings when the cases were together but these look pretty worn.

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]

I also can't get that bearing dowel pin out. Tried heat and pliers.





1x 1976 CB550F1
1x KTM EXC 300
1x CBR600 FW
1x CX500

Online Bryanj

  • SOHC Jedi
  • Posts: 7090
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #85 on: September 14, 2020, 01:31:20 PM »
As long as you have the locating pegs and half rings it should br ok

Offline Oddjob

  • SOHC Jedi
  • Posts: 3630
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #86 on: September 14, 2020, 02:27:34 PM »
That looks as if the bearing was spinning inside the crankcase and it really shouldn't, the cases hold the bearing tight so the shaft spins and not the bearing. I'm wondering if someone has been inside previously and failed to tighten the rear crankcase bolts enough thus allowing the bearing to spin. Should be ok but on re-assembly I'd check to see if you can move the outer bearing case when the cases are back together.

Was there any sign of an oil leak in the front sprocket area?
Don't play stupid with me, I'm better at it

Offline eight0

  • SOHC Member
  • Posts: 115
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #87 on: September 14, 2020, 02:37:07 PM »
Yeah I thought it looked like it has been spinning.

There was a mess of oil and crud by the sprocket, hard to tell if it was from the chain or not though. I was wondering if someone else had been into it as there was a fair amount of sealant and it is brown in colour.
1x 1976 CB550F1
1x KTM EXC 300
1x CBR600 FW
1x CX500

Offline Oddjob

  • SOHC Jedi
  • Posts: 3630
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #88 on: September 14, 2020, 02:39:29 PM »
Brown is actually the correct colour for factory sealant.

I was thinking if the bearing was spinning maybe the final drive seal was allowing oil past where it met the cases.
Don't play stupid with me, I'm better at it

Offline Trigger

  • SOHC Jedi
  • Posts: 7088
  • Engines built on reputation, not advertising.
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #89 on: September 14, 2020, 05:42:26 PM »
Only two things cause that surface damage, 1) the cases were not bolted down or 2) the bearing seized and spun in the cases  ;)

 

SimplePortal 2.3.5 © 2008-2012, SimplePortal