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Author Topic: Rear wheel issues  (Read 508 times)

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Offline Cruiser

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Rear wheel issues
« on: March 08, 2025, 05:54:43 AM »
So I'm in the process of changing sprockets, chain, rear wheel brake, dampers, tires...

As I was undoing the bolts from the rear sprocket, I noticed that one of the bolts (stud actually) was loose... Even more so, it's broken off. So I reckoned, no biggy, I might drill it out and place a new stud. However... I can't seem to get the side of the wheel off (where the dampers are behind). If I'm not mistaken, you should just be able to lift the cover up, and access the dampers? I can't move it at all...

Any tips on getting that loose (it soaking in some WD40 now). I've tried putting the old sprocket back on and use it to pull on, or even tap on it. Doesn't budge.

It's always the "simple" things that seem to get in the way of a quick weekend job :P
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Honda CB550 Four K3 1978
BMW R1150RT 2004

Online bryanj

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Re: Rear wheel issues
« Reply #1 on: March 08, 2025, 06:12:16 AM »
Would help to know what bike you are working on
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline MauiK3

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Re: Rear wheel issues
« Reply #2 on: March 08, 2025, 06:38:43 AM »
might need a manual to tell you what you are working with
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1973 CB 750 K3
10/72 build Z1 Kawasaki

Online newday777

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Re: Rear wheel issues
« Reply #3 on: March 08, 2025, 06:50:26 AM »
I've run into it on some 750 wheels that had been left outside for many years or in damp dirt floor sheds and the corrosion stuck the dampers to the posts.
You do need to have the old sprocket on so you can get hold of it while you stand on the rim, I've even had to get a bar to lever on a 2x4 on the rim and the sprocket. I might have added heat on the backside in the drum flat surface to heat up the rubber to help loosen the grip too.
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline BenelliSEI

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Re: Rear wheel issues
« Reply #4 on: March 08, 2025, 06:52:32 AM »
On my cb750’s I also use a piece of 2” X 4” length of lumber. It’s about three feet long. Before removing the tire is easiest. Lay the assembly on the ground (sprocket side up). Use the wood like a crow bar, under the sprocket and levering down over the tire. Work your way around the tire and keep prying. When they really stick, get someone to stand on the wheel while you jump on the lever!
« Last Edit: March 08, 2025, 11:06:50 AM by BenelliSEI »
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Online bryanj

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Re: Rear wheel issues
« Reply #5 on: March 08, 2025, 10:30:06 AM »
If its a 500/550 you need to unscrew te LHthread retainer ring
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline Cruiser

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Re: Rear wheel issues
« Reply #6 on: March 08, 2025, 12:39:23 PM »
Well the damn thing came loose... Flipped it around on some wood and we tapped it from both sides at the same time untill it started easing out mm by mm...

Was all gued together.

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Honda CB550 Four K3 1978
BMW R1150RT 2004

Offline BenelliSEI

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Re: Rear wheel issues
« Reply #7 on: March 09, 2025, 07:58:18 PM »
Quote from: Cruiser on March 08, 2025, 12:39:23 PM
Well the damn thing came loose... Flipped it around on some wood and we tapped it from both sides at the same time untill it started easing out mm by mm...

Was all gued together.

A year ago, I took a cb750 K6 apart that someone had packed with some sort of grease that had dried up. It took two of us to get it apart!
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