Question: 2000 Yamaha blaster rear brakes

[Rick Shropshire]

I’m looking at replacing rear brake calipers on both of my blasters. I was told that the only thing available was a hydraulic upgrade? I’d prefer the original. Anyone?

[Mech]

I wouldn't know about that but a brake specialist can likely get you new pistons and seals to overhaul the old ones.

[jen]

Almost got ran over by Mr always ready...Viking SXSX700..Removed parking brake and found one pad missing. Caliper mechanism does not appear to move. 

I soaked the caliper for 3 days to get two pad holdeer allen bolts out. 

Here is better pic.

[jen]

I cleaned the claiper. But it does not appear to retract after extending ...I think I may need to  replace the caliper.

[Gwbarm]

open the bleeder valve push one pad aganst piston and get a big c clamp if you dont have the brake caliper retractor tool 

https://www.amazon.com/BILITOOLS-Spreader-Separator-Caliper-Compression/dp/B0B8MN5C72/ref=sxin_17_pa_sp_search_thematic_sspa?content-id=amzn1.sym.9ce0d71e-7aca-4397-8822-32313a4aff8e%3Aamzn1.sym.9ce0d71e-7aca-4397-8822-32313a4aff8e&crid=2S2VIISKE7TQH&cv_ct_cx=brake%2Bcaliper%2Btool&keywords=brake%2Bcaliper%2Btool&pd_rd_i=B0B8MN5C72&pd_rd_r=e95aa5df-2b80-4f9a-9234-0cc5974947be&pd_rd_w=6p7vo&pd_rd_wg=zrmrC&pf_rd_p=9ce0d71e-7aca-4397-8822-32313a4aff8e&pf_rd_r=ZKHJSTDSDBSWXVR1K0ER&qid=1760458254&sbo=RZvfv%2F%2FHxDF%2BO5021pAnSA%3D%3D&sprefix=brake%2Bcaliper%2Btool%2Caps%2C155&sr=1-2-6024b2a3-78e4-4fed-8fed-e1613be3bcce-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9zZWFyY2hfdGhlbWF0aWM&th=1

it will move, now after you move it if it is leaking i would replace the caliper rathar than trying to replace all the seals in the old one.

[jen]

Its the parking brake.  The parking brake is non hydraulic.. It has a retraction spring.

[jen]

I cleaned it so the mounting bracket slides but the mechacical piston appeares stuck.

[Gwbarm]

Oh! You said you cleaned the caliper, if it has a caliper it is hydraulic, but you are right parking brakes are not hydraulic, does it have a drum rear brake that is usually where the parking brake is . It would have a cable that keeps the brake held against the drum when you push or pull on it.. I am working on brakes myself and the rear is a drum, what a nightmare, years of corrosion mud and rust. i will have to create a post for the adventures ia m having. If it has a mechanical piston ,that is new to me, but i dont work on UTVs much.

[jen]

No the wheel brakes are hydralic. The parking brake is  a seperate "Disk"  on drive shaft.  It is a Caliper or disk brake with two brake pads.  However, the parking brake cable caable pulls th caliper closed then a spring pulls the brake open when parking brake is released.

[Gwbarm]

I took a closer look at your photos, not really familiar with that system, but the caliper should move may just need to soak it good with PB Blaster and let it sit overnight, it should only be spring loaded, no brake fluid to cause corrosion and gunk in there . Nothing appears to be broken, its a fairly simple set up not sure why its not working. I would say just replace the pads it might take more strength to move it, out of the machine, than can be applied, or either something is broken internally. Maybe for piece of mind you should just replace it, but i would try putting it back on the machine and trying it first.

[jen]

Yeah Mr Always Ready would have been on top of me if I had not jumped away.   I made wheel chock blocks as on hills it is best to have chocks.  The pads are only $8 a set but the replacement caliper is $290+

[Gwbarm]

Yeah! Anything with Yamahas name on it is expensive, i noticed that when i was restoring mine, but if you want to play you have to pay.

[jen]

Ha HA...$o True!  Often Good Times are expen$ive...LOL   But yes being safe is better than being sorry.

[jen]

OK got new caliper ordered.  But I took old one apart.  You can see the what-cha-ma-call-it that fits inside the thing -a bob is rusted!  That is why it would not retract the brake caliper.  I yse thisSS rust remover a lot on ferrous metal. 

[jen]

I am reassemling the caliper andputting a light coat of Never Seeze on spiral gear mechanism.  I'll keep as spare or maybe someone will want it.

[JBuckeyeJ]

Looks like someone did a lot of water fording and it seeped in.

[jen]

You know I was thinking about what caused that.. Mr Always ready had 1500 miles on him when I got him. I bought him from a dealer   I thought he was a party thing as he had huge speakers.  The primary clutch was groved  and I replaced with new belt as I have posted...unusual for such low mileage....You Think? 

[WeeBee]

Maybe go ahead & reassemble the Brake to make sure it will function correctly ,that way you know if it would be OK for a Spare ?

[jen]

You know I was thinking about what caused that.. Mr Always ready had 1500 miles on him when I got him. I bought him from a dealer   I thought he was a party thing as he had huge speakers.  The primary clutch was groved  and I replaced with new belt as I have posted...unusual for such low mileage....You Think? 

Yes you are right ...I'll dod that the pads are only $8  

[Gwbarm]

I think if you oil up the thing a-abob and make sure the what-cha-ma-call-it moves you will be good to go.

[jen]

Ha  HA My old boss talked like that.   I was just remembering him.  I left out go tell Whoopinjiger to order a new Job-er-do.

[JBuckeyeJ]

reminds me of Derek from Vice Grip Garage

[JBuckeyeJ]

7 hours ago, jen said:

The primary clutch was groved  and I replaced with new belt as I have posted...unusual for such low mileage....You Think? 

I think the grooves are normal for Yamaha.  They run a harder belt from the factory and it wears a groove faster.

[jen]

Hmmmm...I had an aftermarket belt that I Micd' width and length was correct. It lasted 4 miles!  Factory belt with new primary in there now.  I'll check wear next spring.  I can strip pretty fast. I bought the plastic rivets. I made a secondary compression tool. (Looks like A Rube Goldberg tool..LOL). And unfortunately I  am experienced in working on 'Mr Always Ready., Yamaha 700 SXS.

[jen]

Before I changed the Primary Clutch Mr. AR had no get up and go even on a slight grade, I rebuilt the Primary and the secondary clutches.   I installed in the aftermarket belt and it was an improvement but still not great. Once i could get him moving he had a lot of power in some deep mud and up hill.  Then Ka-boom!   That belt exploded. there wasn't but a few a pieces larger than 1/4 inch!   Definitely a bad hair day!

Hard surfacing aluminum (sheaves) is difficult. There are varieties of methods.  I am familiar with ferrous metal hardening or at least prenil testing of same on large industrial drive rollers.  Typically with ferrous metals it is the very thin surface that is hardened. Once you wear through that it is soft metal. I expect aluminum is the same.  After the belt 'exploded' i noticed another "grove forming .  So replaced that primary and new OEM belt.  Now he is Ready even climbing on from a dead start.

[jen]

I got the new parking brake caliper...it was loaded.  Installing it was farily easy  30minute job after I spent an hour and a half figuring out how to maneuver the caliper into position. The first pic is the Parking brake rotor with caliper installed.  Second is old caliper and new.  Last is the Rotor before installing new caliper.   Adjusting is easy and can be done wuthout jacking Mr Alays ready up...

[WeeBee]

Looking Good! Nice job ! 

[jen]

I am not a mechanic...Just a parts replacer.  Mr. Always Ready  locks up solid when I pull his lever now.

[Gwbarm]

Nice work, good you went ahead and replaced it. Good to see it haas a spin on oil filter, changing the oil filter on my yamaha is a nightmare.

[jen]

Its not bad to change JUST$$$  oil