Author Topic: High altitude 73 CB500 daily driver ( 5/20/17 update )  (Read 33105 times)

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Offline Desert Dan

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Re: High altitude 73 CB500 daily driver
« Reply #175 on: October 09, 2015, 01:27:28 PM »
Quick question for the experts. It seems like every time I fix an oil leak on the bike a new one starts. Currently I have a leak coming from my alternator cover, I'm thinking it could either be the oil galley plug seal or the left side crank seal behind the alternator. I haven't pulled the cover off yet to see which seal is leaking, I'm not too concerned about the oil galley seal I'm more concerned with the crank seal. Is the crank seal replaceable with out splitting the cases or can I just pull the rotor off and press a new one in there? If I can replace it by pulling off the rotor will I need a new rotor bolt? I assume I would need a new one as most are one time use but I'm not 100% positive. As always thanks for the help and opinions you guys of the forums provide.

Offline Desert Dan

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Re: High altitude 73 CB500 daily driver
« Reply #176 on: October 09, 2015, 04:08:23 PM »
Also here is the latest airport visit

Offline Desert Dan

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Re: High altitude 73 CB500 daily driver
« Reply #177 on: October 27, 2015, 02:08:19 PM »
     Ok, for a while I had an oil leak coming out of the alternator on the 500, nothing really terrible usually about 4 or 5 drops after each ride but still unacceptable. It turned out the leak was coming from the oil galley plug that is held in place by the alternator cover, I tossed a new O-ring on it from my harbor freight assorted O-ring box, which did the trick for a while..... After a few days of riding the leak returned, less than what it had been leaking but still leaking.
     This leads up to today, I hadn't ridden the bike for almost a week because of crummy weather and a busy schedule so when the sun came out and the day started to warm up I seized my chance to ride. I was riding around taking random roads with no destination in mind, the bike was purring along sweetly and I was just enjoying the heck out of the ride, until I notice my left foot is starting to slip off of the foot peg and is sliding around on the shifter. When I looked down there was a literal stream of oil coming out of the alternator and my foot looked like one of those pelicans you see on TV that gets pulled out of oil spills and is getting cleaned up by a FEMA worker. The HB O-ring I put in must have totally failed because this was no small leak, It looked like I was riding around on the Exon Valdez, all I could do was limp the bike home and clean it up.
    The offending O-ring is #9 O-RING (13X2.5) 91319-300-000
and it installs on #4  PLUG, OIL PASSAGE 11207-323-000

Offline HondaMan

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Re: High altitude 73 CB500 daily driver
« Reply #178 on: October 28, 2015, 04:46:42 PM »
I'll look as see tonight if I have the 3.5x13 on hand. I have 2x13 for the engines, I know for sure.
That thickness is vital in the high-pressure seal zones like that one!
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Offline Desert Dan

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Re: High altitude 73 CB500 daily driver
« Reply #179 on: October 29, 2015, 03:34:13 PM »
Thanks for the offer Mark, unfortunately I already have the O-ring in route from Honda. Though I'm curious about the fitment of the plug, mine has a gap of roughly 1/16in from the end of the plug and where it is supposed to contact the alternator cover and I'm not sure if the gap is designed to be there or not.

Offline Desert Dan

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Re: High altitude 73 CB500 daily driver
« Reply #180 on: May 20, 2016, 11:54:47 PM »
Sad news about the orange sled, last week I went on a long ride solo after finishing up my finals and a flight review, I rode from greeley to Fort Collins, up HWY287 to Laramie WY, across I-80 to Cheyenne, and back down I-25 to Greeley. The trip was about 230ish miles and the bike ran smooth the entire way, I had just stopped for gas near my apartment and was less than a 1/4 mile from home when I rear ended a teen who wasn't paying attention and who had just nearly rear ended a lady turning in front of him. I was about 2 car lengths behind the kid doing 40mph in a 45 but I was dog tired and my reflexes didn't kick in in time, so I still hit him doing about 10mph. I was thrown clear of the car and bike and only received a few scuffs and bruises, unfortunately the bike did a flip landing upside-down destroying the front end and smashing up the rear fender. Right now I have it torn apart in my shop and am currently hunting down parts. Fortunately the gas tank didn't get touched and neither did the engine so it still runs fine and I was able to limp it back to my apartment.

Right now things are looking pretty good as far as damage goes, I believe I  hit slow enough not to damage the frame and the worst of the damage is the bent fork uppers. I don't see any cracks in the triple trees but the steering bearing has developed a few rough spots. My current parts list is as follows: Fork uppers, steering bearing, front wheel bearing, headlight, 2 turn signal stems, front and rear fenders, brake light, handle bar, break lever, and a few other odds and ends that I can't think of off the top of my head. The crash did smash up my gauges but I managed to pick up a nice donor set at the scrap yard and I'm in the process of transferring the guts of my gauges into the donor gauge housings. I'll post a few pictures here in a bit once I've uploaded them to photo bucket.



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Re: High altitude 73 CB500 daily driver ( fender bender repairs )
« Reply #181 on: May 21, 2016, 06:38:26 PM »
Sorry to read of your crash.  Cal's advice is solid!  Original bearings are best replaced with tapered bearings anyway, no periodic maintenance with tapered bearings.  Fenders if in nice chrome tend to set you back a bit.  City driving can be the worst...leave too much room and others cut in front of you...worst yet is that cars can easily outbrake the original brakes on these bikes.  If you are over 140 pounds it just adds to the equation... don't know if the performance with a 140 pound rider would be adequate or not... I haven't seen 140 pounds since middle school, being 6'4" and large framed it is tough to even approach 150, but I did that with Mono my last term in college.

Good luck with it!

David
David- back in the desert SW!

Offline Desert Dan

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Re: High altitude 73 CB500 daily driver ( fender bender repairs )
« Reply #182 on: May 31, 2016, 11:14:23 AM »
Thanks for all the kind words everybody, progress is slow right now as the accident happened at a particularly busy time. Right now all I have done is stripped the bike down and started restoring the gauges, at the moment I have a mess of pictures that I need to upload to photo bucket and get posted over here. What I really could use now is information on the fork tubes/uppers, I swung by Steeles cycles and they took a look at my uppers and said that they could straighten them for $100 but it wouldn't be worth the money based on  the condition of the fork tubes. I measured my least bent tube along it's straightest side and came up with a length of 22.1875in or 563.56mm which isn't too helpfully as I can't find any information  on fork tube lengths on any other cb models. I know most will swap over because of the 35mm diameter but I have seen quite a few variations in tube design such as different dampening holes and an odd bevel in the end of some tubes. So if anyone has any info on which tubes will work best on a 500 that would be much appreciated.

Offline Desert Dan

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Re: High altitude 73 CB500 daily driver ( 5/20/17 update )
« Reply #183 on: May 20, 2017, 02:48:50 PM »
Long time no see every one! I can't believe it's been a whole year since I last posted on the life of the cb500. Last post I was in the midst of the front end rebuild and between life scool and work I let this thread slip to the way side. The good news is I completed the front end rebuild aaanthe bike was back on the road in about a month and a total cost of aout 500$. I took a few photos of the process that I promised the forum so Ill do a much delayed walkthrough of the repairs.

Firts up is the post accident photos:


[/URL


URL=http://s1164.photobucket.com/user/Desert_Dan/media/20160512_193048_zpsby1bshtl.jpg.html]








Overall thedamage wasnt terrible and is as follows: broken headlight, 2 broken turn signals, speedometer case dented and glass broken, RPM gauge case dented, fork tube uppers bent backwards deflecting the wheel back about 2in, front  fender smashed in the front and dented in the back where it hit the exhaust pipes, rear fender dented from landing upsidedown, brake lightassembly smashed, mirrors both smashed, and the handlebars were twisted from landing upside down. Thats all I can remember off the top of my head.

To avoid confusion, nobody worry I fixed the bike and it is still running and driving on the road. Ill document the repairs below.

Offline Desert Dan

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Re: High altitude 73 CB500 daily driver ( 5/20/17 update )
« Reply #184 on: May 20, 2017, 04:03:06 PM »
I started the repairs by stripping the front end of the bike down  to asses the damage, once done came the most painfull bit buying all the required parts to fix the bike. The parts were small and numerouse, but it had to be done. This included new bearingsfor the tripple tree and thefront wheel, seals for the forks, turn signals, brake light assembly, morrors, the list goes on and on.

 One thing I do remember, I got the tail light assembly from 4into1 and while visually correct the quality is very cheap and chinesey, the metal is very thin and the wiring is not correct it used a cheap turn signal socket for the brake light.  To fix the wiring issue I gutted the destroyed brake light and transfered its wiring in to the chinese brake light.

 I will never ever ever do again is rebuild these bike gauges, the chrome crimp ring is the biggest PITA i have ever dealt with. I stabbed myself multiple times taking the gauges apart and putting them back together, and whats worse I had to paint the gauge boddies twice because I slipped and gauged the paint reassembling them. What I did was buy a set of untested gauges from the pick and pull, pull all the guts out of them, repaint the boddies, then transfer the good working guts of my gauges into the repainted gauge boddies. I would reccomend that if your'e going to redo your own gauges either pay to have it done or do a ton of research, build a jig, and open a tab at the local bar.   

The easiest part of the rebuild was actually working on the tripple. To ensure there was no cracking done to the tripple trees or the (steering rod?) I stripped all of paint down to bare metal before inspecting with a magnifying glass and an attempt at my own DIY dye penatrent. I checked the bar/rod that connects the two trees for trueness with my dial indicator. After I was convinced everything was kosher I repainted it and re-assembled with a new AllBalls bearing kit. The AllBalls tapered bearing kit was a smooth install, I just recomend you remember to measure the bearing stack height to ensure proper assembly. After instalation you can really feal the improved smoothness of turning compared to the old ball bearings.

I wont discuss indepth what the process for installing the new front wheel bearing was like, I just hope that god and whom ever tries to replace the bearing again forgives me for the atrocities I committed to replace it. I highly recomend buying the correct tool for removing the baering retainer, I used a hammer and punch when I removed the retainer, the shame of which will haunt me forever.

The last major repair was the fork rebuild, the rebuild itself was a straight forward opperation considering this was my second time rebuilding the forks. The difficult part was tracking down new fork tubes, I was looking at either A. Buying used ones from my favorite motorcycle pick and pull for 200$( All of the used tubes I pulled were pretty crusty and I didnt want to risk leaking forks), B. Having the current tubes straightened for 100$ a piece ( I got turned away by two shops and the third shop said it probobly wouldn't work but they would try if a payed first) or C. Buy new tubes. I ended up buying new tubes from Forking By Frank this was where the majority of my budget went but it was worth every penny, the chrome on the new tubes is excellent and they are 100% identical to the OEM forktubes from honda.

Those were the major parts of the front end rebuild, everything else was pretty minor. A little wiring, a few bolt on parts, a couple spots touched up with paint, and I was able to straighten the fenders to an acceptable level using a 2x4 and  deadblow hammer.  Now that the wall of text is done the next post will be a wall of pictures.   

Offline Desert Dan

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Re: High altitude 73 CB500 daily driver ( 5/20/17 update )
« Reply #185 on: May 20, 2017, 04:26:11 PM »
I didn't do a great job documenting the process, so Ill just post a bunch of the photos I did manage to find so you can get a general sense of the rebuilding work.





The fork rebuild









I used ATF instead of fork fluid this time round, Im a big guy so I need the extra dampening. Rebuilt with new fork tubes, nice and shiny.


Offline Desert Dan

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Re: High altitude 73 CB500 daily driver ( 5/20/17 update )
« Reply #186 on: May 20, 2017, 04:44:27 PM »
Continuing the wall of pictures







Measuring the bearing stacks, tapered roller bearing on right, conventional steering bearing on the left





These are then only pictures of the gauge rebuild I could find, I was probably bleeding and swearing too much to take more pictures. I cleaned up the faces with just water and a rag, the paint was far delicate and would have rubbed off if I tried to wax them. I also repainted the orange tips of the needles.







When the bike flipped upside down the "standoff for the tail light assembly forced a large concave dent into the fender. I was able to pop the dent out with a deadblow hammer and the standoff was undamaged somehow.


Offline Desert Dan

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Re: High altitude 73 CB500 daily driver ( 5/20/17 update )
« Reply #187 on: May 20, 2017, 05:16:53 PM »
Ok after all that work I got the bike reassembled and running better than ever. It still likes to burn oil and produces its own smoke screen when hot but thats a problem Ill deal with when I have time to tare the engine back apart. Here are the photos of how it sits now, I believe Ive put nearly 14k miles on it since I rebuilt the engine and a few thousand on it since I crashed it.







Guanella pass with a buddy



Thats all for now everybody, happy trails and keep the oily side down.

Offline HondaMan

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Re: High altitude 73 CB500 daily driver ( 5/20/17 update )
« Reply #188 on: May 20, 2017, 06:54:40 PM »
Guanella Pass is paved?
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Offline Desert Dan

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Re: High altitude 73 CB500 daily driver ( 5/20/17 update )
« Reply #189 on: May 20, 2017, 08:49:31 PM »
Guanella Pass is paved?

Yes unfortunately it's paved all the way from 285 to I-70. Great for motorcycle riding, but it spoils the camping as it opens it up to all the people who would be deterred by the rough dirt rode.

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Re: High altitude 73 CB500 daily driver ( 5/20/17 update )
« Reply #190 on: May 21, 2017, 01:52:41 AM »
I've purchased a couple of pairs of fork tubes from Frank, but mine never had that brand etching on them.
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Offline Desert Dan

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Re: High altitude 73 CB500 daily driver ( 5/20/17 update )
« Reply #191 on: May 22, 2017, 04:20:59 PM »

I thought the etching was a nice touch, if I recall correctly the etching is high up on the tubes where it would be hidden by the headlight bracket.