Author Topic: parts ID?  (Read 649 times)

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Offline Don R

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parts ID?
« on: December 11, 2024, 09:28:33 PM »
  Let's play, "where's it go"
 CB750 is what I have around here but I'm not positive that's what they are from. I found these 4 washers tied together in a pan of parts. Two are thin and look like hard machine washers, two are similar but curved spring type washers.
 I looked at the shift mechanism diagram, that was my guess but didn't find them there.
 
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Offline scottly

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Re: parts ID?
« Reply #1 on: December 11, 2024, 09:48:42 PM »
My WAG (Wild Assed Guess) is they go on the kick-starter pivot pin, so the lever doesn't rattle around on the "knuckle".
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Offline brianc

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Re: parts ID?
« Reply #2 on: December 11, 2024, 11:05:19 PM »
Starter motor thrust washers?

Offline brianc

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Re: parts ID?
« Reply #3 on: December 11, 2024, 11:06:15 PM »
Armature........

Offline PeWe

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Re: parts ID?
« Reply #4 on: December 11, 2024, 11:32:39 PM »
If washers should be alu, oil hoses connection at oil tank.

Otherwise for headlight to sit better with rubber, reduce gliding.
Yamiya sell rubber "washers".
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Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Don R

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Re: parts ID?
« Reply #5 on: December 12, 2024, 09:22:17 AM »
   They seem to be hardened or spring steel. I did take a frozen 750 starter apart once, it was really rusty, had been submerged in rainwater but the brushes and holder were somehow nice and clean, so I kept them.
No matter how many times you paint over a shadow, it's still there.
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 You don't need a weatherman to know which way the wind blows.

Offline Rayzerman

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Re: parts ID?
« Reply #6 on: December 12, 2024, 12:50:25 PM »
I think they're called wave washers, usually thinner spring steel.  They basically hold constant pressure, usually on a bolt with a shoulder that bottoms out.  Like a shifter pivot on a newer bike, e.g.  Allows a shaft to turn while keeping it under mild pressure.   Definitely hardened or they'd just become flat washers.  I have a few new ones in my stash.

Offline HondaMan

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Re: parts ID?
« Reply #7 on: December 12, 2024, 01:18:28 PM »
I don't recognize the wave washers from the 750: if those other washers are 8mm ID and hard, then I'd guess for the crankcase bolts or [under] the head nuts? The kick lever's spring washer is as thick as both of those added together, at least on the 3 of them I have.
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Offline Ozzybud

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Re: parts ID?
« Reply #8 on: December 12, 2024, 03:29:16 PM »
I have seen the wave washers before somewhere. Not on  a 750.

Maybe on a Foot peg on another model?
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1971 CT70H ORANGE
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1975 CB360T RED
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1976 CB750F RED

Offline Rookster

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Re: parts ID?
« Reply #9 on: December 12, 2024, 04:57:46 PM »
Honda sold 2 different size shims to stiffen up the early brake caliper bracket.  Could it be those shims?  I have a couple of them somewhere and they are very thin. 

Scott

Offline Don R

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Re: parts ID?
« Reply #10 on: December 12, 2024, 05:53:18 PM »
Honda sold 2 different size shims to stiffen up the early brake caliper bracket.  Could it be those shims?  I have a couple of them somewhere and they are very thin. 

Scott
  If they are, I have two places for them! the two older K0's both rattle when going over bumps.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Rookster

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Re: parts ID?
« Reply #11 on: December 13, 2024, 02:22:44 PM »
Here are the caliper bracket shims. 


Scott

Offline PeWe

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Re: parts ID?
« Reply #12 on: December 13, 2024, 10:17:13 PM »
So Honda have shims for the brake caliper....
I bought shims in various thicknesses for them.
I have not added shims yet. Next time the wheel is off.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Rookster

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Re: parts ID?
« Reply #13 on: December 13, 2024, 11:18:55 PM »
Yes.  Here is the service bulletin about it.  They had .1mm and .2mm shims.  i have to do mine as well. Just waiting until the front wheel has to come off for some reason. 



Scott

Offline PeWe

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Re: parts ID?
« Reply #14 on: December 14, 2024, 01:22:57 AM »
Good to know the Service bulletin that shows where to place the shim.

I ordered M10x20mm 0.1, 0.3 and 0.5mm thickness.
I have not tested them yet what I can recall. If too wide possible to cut. Both my bikes, K2 and K6 have the later fork (341) with  matching caliper holder.
Had to check...
My K6 right side caliper holder is clonky when grabbing it, move up - down. Look like any easy fix, off with the lower M8 bolt and down with the "hinge". I'll test a shim on an extra caliper holder I have.

Measure needed thickness on bike by pressing in a feeler gauge in the assembly.

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« Last Edit: December 14, 2024, 01:51:21 AM by PeWe »
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Oddjob

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Re: parts ID?
« Reply #15 on: December 14, 2024, 06:17:29 AM »
I think starter motor washers, I've done a few and they look exactly like that. In fact I have one apart now, I'll find the bits and take a pic for you to compare.

Offline M 750K6

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Re: parts ID?
« Reply #16 on: December 15, 2024, 01:54:21 AM »
I have one of those on my calliper arm / joint. 750K6.

I've also seen that type of washer used on Harley softail footpegs, as the spring to provide rotation resistance.

Offline Don R

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Re: parts ID?
« Reply #17 on: December 15, 2024, 06:16:02 PM »
 I did find two Harley footpegs in my box of "chopper stuff" the washers might have come along with them. One or two of the guys I bought Honda stuff from must have liked aluminum pegs, I just offered a few pairs to a friend that has a really cool old Harley. Kind of a bobber with a ton of copper and brass and handmade parts on it.
 Any thread here can become a great learning experience. Now I know how to fix my rattling early calipers. 
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.