Author Topic: K0 500 Four Speedo Gear Box Fitting instructions Please  (Read 773 times)

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Offline paulbaker1954

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K0 500 Four Speedo Gear Box Fitting instructions Please
« on: February 22, 2016, 08:12:42 AM »

Is this supposed to be fixed somehow so it cannot rotate.

I have reassembled my front wheel and can't work out if the speedo drive is supposed to have a lug or something to stop it rotating. Right now it will rotate about 20 degress in each direction and seems to hit some kind of stop.

The Honda service manual says
"Make sure that the speedometer gear box is mounted in the proper position."

But it sadly does not say how to achieve this


If you think there's light at the end of the tunnel it's usually another train !!

2014 Triumphy Trophy 1200
1971 Honda CB500 Four K0

Offline jonda500

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Re: K0 500 Four Speedo Gear Box Fitting instructions Please
« Reply #1 on: February 22, 2016, 07:43:01 PM »
If the axle is done up tight, it should rotate freely only with the axle, but once the axle is clamped into the forks it should be held tight, John
Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
http://forums.sohc4.net/index.php/topic,149161.msg1711626.html#msg1711626
197? CB500/550 constructing from left over parts
1998 KTM 380 (two stroke) recent impulse buy, mmmm...

Offline paulbaker1954

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Re: K0 500 Four Speedo Gear Box Fitting instructions Please
« Reply #2 on: February 23, 2016, 12:18:14 AM »
Hi John
Still think I am confused.
The axle has a hole in one end right so if i stick a screwdriver in hole and tighten up nut on axle at other end to the point the gearbox is tight then axle seems to be locked up.

This is before installing in the forks of course.

I must ne missing soemthing really obvious here
If you think there's light at the end of the tunnel it's usually another train !!

2014 Triumphy Trophy 1200
1971 Honda CB500 Four K0

Offline jonda500

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Re: K0 500 Four Speedo Gear Box Fitting instructions Please
« Reply #3 on: February 23, 2016, 04:36:29 AM »
Does your speedo gearbox turn ok when you remove it, poke a screwdriver in and use it to rotate the two lugs you can see under the seal? - it sounds like it may be seized
John
Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
http://forums.sohc4.net/index.php/topic,149161.msg1711626.html#msg1711626
197? CB500/550 constructing from left over parts
1998 KTM 380 (two stroke) recent impulse buy, mmmm...

Offline paulbaker1954

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Re: K0 500 Four Speedo Gear Box Fitting instructions Please
« Reply #4 on: February 23, 2016, 08:21:21 AM »
Thanks John
i will have a look at the week end when I get back on the project.
If you think there's light at the end of the tunnel it's usually another train !!

2014 Triumphy Trophy 1200
1971 Honda CB500 Four K0

Offline jonda500

  • I may be crazy but I'm not stupid!
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  • Posts: 1,797
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Re: K0 500 Four Speedo Gear Box Fitting instructions Please
« Reply #5 on: February 23, 2016, 03:53:25 PM »
"Make sure that the speedometer gear box is mounted in the proper position."

Also I'm thinking alternatively maybe your collar (that's under the chrome retaining ring) didn't engage properly with the two lugs(/tabs) in the speedo gearbox?
John
Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
http://forums.sohc4.net/index.php/topic,149161.msg1711626.html#msg1711626
197? CB500/550 constructing from left over parts
1998 KTM 380 (two stroke) recent impulse buy, mmmm...