« previous next »
Pages: 1 [2]   Go Down

Author Topic: How do you get the cam chain on/off the sprocket?  (Read 3706 times)

0 Members and 1 Guest are viewing this topic.

Offline Scott S

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 8,252
Re: How do you get the cam chain on/off the sprocket?
« Reply #25 on: November 18, 2018, 11:18:22 AM »
 I don't know that it's off. I'm cautioning you now, while you're at this stage, to check it and fix it if necessary.
Logged
'71 CB500 K0
'17 Triumph Street Scrambler
'81 Yamaha XS650

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #26 on: November 19, 2018, 02:12:31 PM »
https://imgur.com/a/03N6Y2W

Can anyone see what's going on up there? I don't see how you can get a view of the tensioner but apparently others are seeing it from underneath. Trying to determine if I've got it in correctly at this point.

...


Ah, I think I see how you guys are seeing the chain and tensioner from down there looking over old threads/pics. Before I wasn't imagining they'd reach down that far and I don't know what it looks like in there. A see through diagram somewhere would be nice. I'll have to get my head under there. I hadn't actually got myself under there. Just took pics.
« Last Edit: November 19, 2018, 02:51:10 PM by juntjoo »
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline DaveBarbier

  • Really Old Timer ...
  • *******
  • Posts: 5,630
Re: How do you get the cam chain on/off the sprocket?
« Reply #27 on: November 19, 2018, 04:06:20 PM »
This isn’t the hard part! Look at the pictures in the posts and then look under your bike! If it’s the same then that means it’s the same. If it’s different then that means it’s different.
Logged

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #28 on: November 19, 2018, 04:47:45 PM »
Every part's hard for me. Excuse me. I was still waiting for the oil to stop dripping and honestly I was still having a difficult time believing I'd have the same view as others and my ignorance is just confusing me.  I'm doing this in between other things so not always easy to dress up appropriately to get dirty. I'll get it....
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline Little_Phil

  • Hot Shot
  • ***
  • Posts: 672
Re: How do you get the cam chain on/off the sprocket?
« Reply #29 on: November 20, 2018, 12:56:15 AM »
Most of the pics showing the misplaced tensioner show a 500/550. Looks like it appears just in front of the starter clutch, just next to the big thin idler gear if it misses its location. The 650 has a tensioner on the primary chain to the other side, so yours looks different to this pic. Not familiar with 650, maybe it's better designed and less likely to miss.
Logged

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #30 on: November 21, 2018, 04:00:22 PM »
Quote from: Little_Phil on November 20, 2018, 12:56:15 AM
Most of the pics showing the misplaced tensioner show a 500/550. Looks like it appears just in front of the starter clutch, just next to the big thin idler gear if it misses its location. The 650 has a tensioner on the primary chain to the other side, so yours looks different to this pic. Not familiar with 650, maybe it's better designed and less likely to miss.

Mine looks the same. That had to be the toughest shot I've ever had to get of a part in an engine. And looks like I'm good though

I'm attaching my pics directly through here. Is the pic limit high? In the old days I got in the habit of linking to them outside the site cuz I was exceeding quotas.

And how do you space out your pics rather than in a row of possible?

Anyway, so the last two pics show my step one of getting the chain on, then step two I stop cuz there is a lot of stress rotationally and laterally on the chain. I don't feel this is right. But one manual(sorry not keeping best track of which one I'm looking at when between two forums), one of them online says one bolt as I did, then turn it to get to the next one. This is where I'm stopping. Then another manual says put chain on gear, THEN slip shaft through. I felt no way(no slack in chain) that was happening.

How would you get further from my last pic? I was turning it clockwise

I'll dig through all my info again, see if I missed something...


Edit: okay, so I just went all the way. There was a little click as the chain finally sat but once on feels perfect, but off timing lol. Np, just wanted to get it on once. One more time....
« Last Edit: November 21, 2018, 04:06:59 PM by juntjoo »
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,046
Re: How do you get the cam chain on/off the sprocket?
« Reply #31 on: November 21, 2018, 10:08:38 PM »
Would that not be easy with the sprocket unbolted, and slipped off the shoulder ?
Logged
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #32 on: November 21, 2018, 10:16:49 PM »
Quote from: 754 on November 21, 2018, 10:08:38 PM
Would that not be easy with the sprocket unbolted, and slipped off the shoulder ?

Well yeah, but then I have to get it back on the shoulder. If I understood you correctly. Seems with my setup you gotta start with one bolt, partial sprocket/chain attachment, then crank it over to force the the rest of the chain on then last bolt. But I read on one of the manuals/links in these forums to do it like that and no other method worked for me. Must be  the other models/engine sizes with enough chain slack to do it that way, chain on sprocket, THEN wiggle cam shaft through. Didn't work for me. Next trick is getting it on the right timing. Another little puzzle as you lose the alignment in the process of getting the chain on. It's probably a lot easier the second and third time. Got that tomorrow. Step by step lol.
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline Little_Phil

  • Hot Shot
  • ***
  • Posts: 672
Re: How do you get the cam chain on/off the sprocket?
« Reply #33 on: November 22, 2018, 01:38:05 AM »
Quote from: juntjoo on November 21, 2018, 04:00:22 PM
Mine looks the same. That had to be the toughest shot I've ever had to get of a part in an engine. And looks like I'm good though

This looks wrong. I presume you corrected this or is this how the 650 is supposed to look.
« Last Edit: November 23, 2018, 02:18:18 AM by Little_Phil »
Logged

Offline Scott S

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 8,252
Re: How do you get the cam chain on/off the sprocket?
« Reply #34 on: November 22, 2018, 04:54:05 AM »
 Did you flatten out the cam chain tensioner to get max slack? Is the forward chain guide blade in the proper position/direction?
 
« Last Edit: November 22, 2018, 04:56:24 AM by Scott S »
Logged
'71 CB500 K0
'17 Triumph Street Scrambler
'81 Yamaha XS650

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #35 on: November 22, 2018, 11:05:58 AM »
Quote from: Little_Phil on November 22, 2018, 01:38:05 AM
Quote from: juntjoo on November 21, 2018, 04:00:22 PM
Mine looks the same. That had to be the toughest shot I've ever had to get of a part in an engine. And looks like I'm good though

I presume you corrected this or is this how the 650 is supposed to look.

Yes, mine is the same and I had it in correctly
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #36 on: November 22, 2018, 11:09:08 AM »
Quote from: Scott S on November 22, 2018, 04:54:05 AM
Did you flatten out the cam chain tensioner to get max slack? Is the forward chain guide blade in the proper position/direction?

Yes to the first question. Confused about your second one. Yeah, there's no tension on the chain. I should have correctly installed within the next few hours, just gotta get it on correct timing which is proving a bit tricky(fingers crossed)
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #37 on: November 22, 2018, 02:30:18 PM »
I keep learning how less I know about how these parts work than I thought I knew before. Somehow I'm not getting enough chain slack and I won't be forcing it as I had before. I'm thinking I gotta get back down there and adjust the tensioner unless I can figure out another way
with it all together. I'll keeping trying /researching...


No I got it. One sec...
« Last Edit: November 22, 2018, 03:49:19 PM by juntjoo »
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #38 on: November 22, 2018, 04:29:24 PM »

Looks perfect. Apparently having the bike on the center stand gave me that little bit of slack I needed to get it on. If you notice anything off let me know. I'll be cleaning up the surfaces then flush it out with clean oil then throw on the cover and start checking the clearances...
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline Scott S

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 8,252
Re: How do you get the cam chain on/off the sprocket?
« Reply #39 on: November 22, 2018, 06:27:57 PM »
 Good deal!

 Use a TINY bit of sealant on the rubber pucks. Nor the orange RTV stuff.
 Generously line the cam lobes, contact surfaces on the valve stems, etc., while you're in there.
Logged
'71 CB500 K0
'17 Triumph Street Scrambler
'81 Yamaha XS650

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #40 on: November 25, 2018, 10:09:51 AM »
Hmm... I wonder if I'm a tooth off. Is one tooth off easy to do? Bike is all together and not starting. It's popping whatever that means. I haven't put the pipes on yet.

Compression test? If the timing is off that would cause valves to open/close at the wrong times preventing compression right? I've got spark to al plugs. The carbs have been sitting since I rode the bike last but they had been perfect.
« Last Edit: November 25, 2018, 10:20:22 AM by juntjoo »
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline Scott S

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 8,252
Re: How do you get the cam chain on/off the sprocket?
« Reply #41 on: November 25, 2018, 11:01:14 AM »
 It's pretty obvious when you're off a tooth. If the slot on the end of the cam is in line with the head when the T mark is at TDC, it's not off a tooth. It's pretty evident when it's off.

 Did you adjust the valves?
Logged
'71 CB500 K0
'17 Triumph Street Scrambler
'81 Yamaha XS650

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #42 on: November 25, 2018, 01:52:13 PM »
Quote from: Scott S on November 25, 2018, 11:01:14 AM
It's pretty obvious when you're off a tooth. If the slot on the end of the cam is in line with the head when the T mark is at TDC, it's not off a tooth. It's pretty evident when it's off.

 Did you adjust the valves?

Yes I did.

I do remember thinking the two punch marks on the cam sprocket weren't EXACTLY level, but dang close, I figured not as far as an entire tooth, or as "obvious" as I should be concerned.

Here's my compression results:

http://imgur.com/a/jipV1ya

Kinda weak and they were better before.

I'm just putting off taking the cover off again to then have to redo the valves.

I line up the little index mark with the T but it's never been 100% clear to me which mark is for what. Maybe that slight misalignment between the punch marks and ignition index mark is due to me lining it up wrong?

http://imgur.com/a/erNevVj

In using the mark the farthest to the left over the T which is over the 1.

The cutout in the right side end of the cam shaft was horizontal and I think fixed with the punch marks on the sprocket.

I think I'll double check my floats(good idea?) then take the cover off again and check timing. I'm thinking the low compression is hinting towards timing somehow no?

As far as the valve adjusting sequence I just adjust while the arm is off the lobe.





Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #43 on: November 25, 2018, 04:54:20 PM »
Exhaust gaskets https://imgur.com/a/9GRmX7S

Are these reusable? They're flattened out from previous use but I'm wondering if I can tighten them in a couple times after heating them up after running the engine.
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #44 on: November 25, 2018, 04:56:49 PM »
Latest progress


I think putting that tach gear back in fixed the weak combustion.
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #45 on: November 25, 2018, 05:12:26 PM »
Mystery part https://imgur.com/a/fTgQWLk

This is on the right rear foot peg. It was on there. Whether I put it there previously in error or not I couldn't say bit it appears it could fit under that spring there tho I don't recall ever removing that spring to take it off in the first place
« Last Edit: November 25, 2018, 05:14:15 PM by juntjoo »
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.

Offline juntjoo

  • Expert
  • ****
  • Posts: 1,162
Re: How do you get the cam chain on/off the sprocket?
« Reply #46 on: November 25, 2018, 07:10:50 PM »


Thanks for the help! Not much here. Just a little vid of it getting started. It was better off than I expected, and I did a decent job putting it back together. No leaks (yet). But I am missing a couple of those copper washers on the cylinder head cover. If anyone knows what that little plate was let me k ow otherwise one day something will fall off and I'll know. Now I can go to the store and get some food then start fixing my washer then wash some clothes and leave the house lol. I love this bike! Today. I'm no noobie anymore! Wait, how am I gonna leave the house to eat wihh no clean clothes...
Logged
-Ben

82 Nighthawk 650..

1982 Honda Nighthawk...

I HAVE A 1982 HONDA NIGHTHAWK FFS! j/k. It's my only bike, my first and last.
Pages: 1 [2]   Go Up
« previous next »