• Ciao Guest - You’ve landed at the ultimate Guzzi site. NEW FORUM REGISTRATIONS REQUIRE EMAIL ACTIVATION - CHECK YOUR SPAM FOLDER - Use the CONTACT above if you need help. New to the forum? For all new members, we require ONE post in the Introductions section at the bottom, in order to post in most of the other sections. ALWAYS TRY A SEARCH BEFORE STARTING A NEW TOPIC - Most questions you may have, have likely been already answered. DON'T BE A DRIVE-BY POSTER: As a common courtesy, check back in and reply within 24 hours, or your post will be deleted. Note there's decades of heavily experienced Guzzi professionals on this site, all whom happily give endless amounts of their VALUABLE time for free; BE COURTEOUS AND RESPECTFUL!
  • There is ZERO tolerance on personal attacks and ANY HYPERLINKS to PRODUCT(S) or other competing website(s), including personal pages, social media or other Forums. This ALSO INCLUDES ECU DIAGnostic software, questions and mapping. We work very hard to offer commercially supported products and to keep info relevant here. First offense is a note, second is a warning, third time will get you banned from the site. We don't have the time to chase repeat (and ignorant) offenders. This is NOT a social media platform; It's an ad-free, privately funded website, in small help with user donations. Be sure to see the GTM STORE link above; ALL product purchases help support the site, or you can upgrade your Forum profile or DONATE via the link above.
  • Be sure to see the GTM STORE link also above for our 700+ product inventory, including OEM parts and many of our 100% Made-in-SoCal-USA GTM products and engine kits. In SoCal? Click the SERVICE tab above for the best in service, tires, tuning and installation of our products or custom work, and don't miss our GT MotoCycles® (not) art on the BUILDS tab above. WE'RE HERE ONLINE ONLY - NO PHONE CALLS MADE OR RECEIVED - DO NOT EMAIL AND ASK QUESTIONS OR ASK TO CALL YOU.
  • Like the new V100, GuzziTech is full throttle into the future! We're now running on an all-new server and we've updated our Forum software. The visual differences are obvious, but hopefully you'll notice the super-fast speed. If you notice any glitches or have any issues, please post on the Site Support section at the bottom. If you haven't yet, please upgrade your account which is covered in the Site Support section or via the DONATE tab above, which gives you full site access including the DOWNLOADS section. We really appreciate every $ and your support to keep this site ad-free. Create an account, sign in, upgrade your account, and enjoy. See you on the road in 2024.

Rear wheel 1975 850T

pizza for you

pizza for you

Cruisin' Guzzisti
GT Contributor
Joined
Jun 8, 2015
Messages
176
Location
Ohio
Hi it's me again.
I'm starting to work on the rear wheel of my 75 850T and I wanted some opinions on some things. I noticed this on the brake lining. It looks like the lining peeled away on the side ( circled in the yellow lines.) Is this OK ?

1704841429459
The splines look to me to be fine but want to be sure so I wanted to ask you guys what you think.
Splines
Where is a good place to send the rear drive to have it checked out and the seal replaced ?
 
That lining does look suspicious from your picture. Run some sand paper or Scotchbrite along the area where the brake shoes would engage. If smooth you should be OK. The outer seal is relatively easy to replace. The inner seal is usually the problem also, especially on a bike that old. To replace that inner seal special tools are usually needed to remove the race for the inner needle bearing so you can replace the seal. Also inspect the ends of the ring gear carrier where they contact the seals to make sure they are smooth and won't damage a seal. When you do install the wheel, be sure to grease those splines to keep them good. You won't be using the rear brake much as it is too easy to lock the rear wheel. Mostly will be used when stationary such as holding on a hill.
 
For sure I don't have the special tools or skill to disassemble the ring gear carrier. Would like to know where I could send the unit to have the work done.
 
pizza for you said:
For sure I don't have the special tools or skill to disassemble the ring gear carrier. Would like to know where I could send the unit to have the work done.
Click to expand...

Easy.

Curtis Harper. Harper Moto Guzzi

Google them. Look at website. Click SERVICE.

Nobody alive has more skills at that. Mike Harper (>80 yrs old) as far as I know, still goes into the shop every day.
 
I don't believe that there is anything wrong with your wheel. The edge of your "lining" or brake drum does look different than the 850-T wheel I have here now, if it was a defect it wouldn't have a repeating "pattern" around the drum, it would be more random. Looks like part of the manufacturing process to me.

Scott: Mike Harper passed quite a while ago.
 
Amboman said:
I don't believe that there is anything wrong with your wheel. The edge of your "lining" or brake drum does look different than the 850-T wheel I have here now, if it was a defect it wouldn't have a repeating "pattern" around the drum, it would be more random. Looks like part of the manufacturing process to me.

Scott: Mike Harper passed quite a while ago.
Click to expand...


Oh I didn’t know. My bad. Thanks for the info.

Curtis is very much alive though, yes?

I just knew that everybody I ever knew who needed a rebuild of a final drive or anything related to that, sent their stuff to Harpers.
 
Last edited:
For what its worth I had issues sealing the rear drive unit . Leaking ( weeping , oozing , like about 1 drip every day ) thru the seals ....new ones . I did give everything relevant a good measure up, checked where the seal bears on the gear and all ok . The seals both felt sorta loose and I could see why they might not seal all that well . In the end I asked my supplier to get me a different brand of seals and they were a slightly tighter fit and it hasnt leaked since
 
Mc Tool said:
For what its worth I had issues sealing the rear drive unit . Leaking ( weeping , oozing , like about 1 drip every day ) thru the seals ....new ones . I did give everything relevant a good measure up, checked where the seal bears on the gear and all ok . The seals both felt sorta loose and I could see why they might not seal all that well . In the end I asked my supplier to get me a different brand of seals and they were a slightly tighter fit and it hasnt leaked since
Click to expand...
👍
 
pizza for you said:
👍
Click to expand...
Mc Tool said:
For what its worth I had issues sealing the rear drive unit . Leaking ( weeping , oozing , like about 1 drip every day ) thru the seals ....new ones . I did give everything relevant a good measure up, checked where the seal bears on the gear and all ok . The seals both felt sorta loose and I could see why they might not seal all that well . In the end I asked my supplier to get me a different brand of seals and they were a slightly tighter fit and it hasnt leaked since
Click to expand...
The rear of my bike was coated in oil at the time. Was not until I disassembled the whole bike for a complete do over that I found the reason for all the oil. The output shaft seal of the transmission was worn out. Decided to have the rear drive seals replaced too.
 
You must log in or register to reply here.
Back
Top