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Author Topic: Dohc Cb750f: possibly a valve issue  (Read 10905 times)

Offline Sonreir

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Re: Dohc Cb750f: possibly a valve issue
« Reply #160 on: Aug 12, 2019, 22:39:15 »
That sounds like a heck of a journey. I did a similar camping trip a few years back and lost an o-ring on my fuel line. I ended up holding the thing closed with my finger while a friend rode to the nearest town (15 miles each way) and came back with a selection of o-rings. Luckily one of the SAE ended up fitting and we were down the road again.

For lighting, I always set up an auxiliary option after having a similar experience as you. http://www.sparckmoto.com/Products/Detail/84 (hint, hint ;D)
Sparck Moto - http://www.sparckmoto.com

Audaces fortuna iuvat.

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Offline SquidHunter

  • Posts: 145
Re: Dohc Cb750f: possibly a valve issue
« Reply #161 on: Aug 12, 2019, 22:57:43 »
Nice side cases. I might have missed it but how are they mounted?

Sent from my SAMSUNG-SM-G930A using DO THE TON mobile app

I tried to post photos of it. Hereís a close up. I cut the sides off a milk crate and used some bar mounts to mount it to the side grab bars. Iíve been using the passenger pegs to stabilize them. So far theyíre working great


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Offline SquidHunter

  • Posts: 145
Re: Dohc Cb750f: possibly a valve issue
« Reply #162 on: Aug 12, 2019, 23:05:52 »
That sounds like a heck of a journey. I did a similar camping trip a few years back and lost an o-ring on my fuel line. I ended up holding the thing closed with my finger while a friend rode to the nearest town (15 miles each way) and came back with a selection of o-rings. Luckily one of the SAE ended up fitting and we were down the road again.

For lighting, I always set up an auxiliary option after having a similar experience as you. http://www.sparckmoto.com/Products/Detail/84 (hint, hint ;D)

Well, the funny thing is Iíve set up such a light. I mounted a fog light to my crash bar. The bad thing is Iíve just been riding around with it like a ding dong. I havenít figured out the switch situation for it. Well, Iíve figured it out. I havenít executed it yet..... so thereís that. Lol

Iím glad it happened safely, and I gained a learning experience. Iíve definitely thought about it, just didnít think about not being able to find a bulb. Definitely thinking about going with an led headlight now, I like having my headlight switched on the light though. I wonít everything impossibly simple


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Offline SquidHunter

  • Posts: 145
Re: Dohc Cb750f: possibly a valve issue
« Reply #163 on: Aug 12, 2019, 23:09:43 »
Well, the funny thing is Iíve set up such a light. I mounted a fog light to my crash bar. The bad thing is Iíve just been riding around with it like a ding dong. I havenít figured out the switch situation for it. Well, Iíve figured it out. I havenít executed it yet..... so thereís that. Lol

Iím glad it happened safely, and I gained a learning experience. Iíve definitely thought about it, just didnít think about not being able to find a bulb. Definitely thinking about going with an led headlight now, I like having my headlight switched on the light though. I wonít everything impossibly simple


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Those lights look the business man. So two can act as a headlight? I like that idea. Trying to get away from bulbs for sure. What kind of power draw do they have? Iíd like to talk more


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Offline SquidHunter

  • Posts: 145
Re: Dohc Cb750f: possibly a valve issue
« Reply #164 on: Aug 12, 2019, 23:41:56 »
Iím thinking about making a tank bag. Something more proper. I just canít find what I want for sale....


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Offline pidjones

  • Posts: 1043
Re: Dohc Cb750f: possibly a valve issue
« Reply #165 on: Aug 13, 2019, 08:58:56 »
I replaced the front wheel bearings on the rat bike '79 CB750F last winter - pretty easy. Drilled two holes in an aluminum bar to accept drill bits (backwards) that fit the keeper holes. Drilled out the stakes from the keepers (you don't have to go deep). The aluminum bar was long enough that it gave good leverage and spun the keeper out easily. Make sure caliper alignment is correct when you put it back together.
"Love 'em all.... Let God sort 'em out!"

Offline SquidHunter

  • Posts: 145
Re: Dohc Cb750f: possibly a valve issue
« Reply #166 on: Aug 13, 2019, 09:44:27 »
I replaced the front wheel bearings on the rat bike '79 CB750F last winter - pretty easy. Drilled two holes in an aluminum bar to accept drill bits (backwards) that fit the keeper holes. Drilled out the stakes from the keepers (you don't have to go deep). The aluminum bar was long enough that it gave good leverage and spun the keeper out easily. Make sure caliper alignment is correct when you put it back together.

Whatís the secret to the caliper alignment? That may be the noise Iím hearing. I kept thinking the tire was scrubbing the front fender, but I havenít been able to put my finger on it. Could it be the caliper rubbing?


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Offline pidjones

  • Posts: 1043
Re: Dohc Cb750f: possibly a valve issue
« Reply #167 on: Aug 13, 2019, 12:41:52 »
Most Hondas that I've worked on have a bolt on one end of the axle and the other end is smooth. You tighten the bolt and axle holder (front first) on that fork and leave the other axle holder a little loose. Then you bounce the forks to let them center and tighten the other axle holder and check caliper-to-disk clearance on that side with a feeler gauge (provided in the onboard tool kit). Should be instructions in the FSM, maybe also the owner's manual. 0.7mm feeler on a GL1000, probably vlose to the same on yours. Check between disk and bottom and top of caliper. Loosen holder and re-center if necessary. The axle bolt side can't be adjusted.
"Love 'em all.... Let God sort 'em out!"

Offline SquidHunter

  • Posts: 145
Re: Dohc Cb750f: possibly a valve issue
« Reply #168 on: Aug 13, 2019, 13:22:48 »
Most Hondas that I've worked on have a bolt on one end of the axle and the other end is smooth. You tighten the bolt and axle holder (front first) on that fork and leave the other axle holder a little loose. Then you bounce the forks to let them center and tighten the other axle holder and check caliper-to-disk clearance on that side with a feeler gauge (provided in the onboard tool kit). Should be instructions in the FSM, maybe also the owner's manual. 0.7mm feeler on a GL1000, probably vlose to the same on yours. Check between disk and bottom and top of caliper. Loosen holder and re-center if necessary. The axle bolt side can't be adjusted.

Iíll see if I can find it in the FSM. Thatís a good call.


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Offline crazypj

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Re: Dohc Cb750f: possibly a valve issue
« Reply #169 on: Aug 13, 2019, 16:54:25 »
If you have FSM, check axle is fitted into wheel properly. It's very easy to fit it from the wrong side and have the wheel off centre
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