Boom!
It feels like we’re running into more and more parts issues year after year, month after month (;´・`д・´)
We really need to check things out and discuss the risks before we tear it down…
Of course, the research takes more than the usual amount of time, so we can’t avoid increased costs (・´з`・)
We found a reliable Yamaha OEM piston kit, so we’ll go ahead and assemble with this one~
(´∀｀*) Hehe, the big sale of the year—Amazon Prime Day 7/12 and 13
Piston reuse, seals only overhaul is here: 1J3-W0047-00
If you want everything brand new—piston and all seals—this is the one: 1J3-W0057-00
This is a Yamaha SR400SP cast model piston.
The GX750 (XS750) has no piston parts listed
The SR400SP has a piston seal kit available
Both have the same seal kit part number = are the pistons the same or not? This is reverse-engineering at its finest.
We’re investigating this one carefully too…
The single-piston caliper boot is the secret sauce.
This boot… it’s ridiculously expensive… 1J3-25917-00
I’d guess Honda would charge about 200 yen for the same thing… Old bikes are tough.
We inspect everything, blow it out with compressed air, and get to assembling smoothly!
Assembly uses CCI MR20 metal rubber.
With this stuff, the piston operates super smoothly.
When doing a caliper overhaul, replace the bleeder with a new one (*´ω｀*)
Sintered metal brake pads work well with stainless disks and give a nice feel.
Pads with weak bite that drag during braking tend to cause uneven disk wear. Beseler really helps us out by covering even these niche models~
VD-205JL
Check the pad sliding surfaces for burrs and smooth operation. If there are problems, deburr them, and the brake action will be even better (*´ω｀*)
As usual, we fabricated the mesh hose to look pretty stock.
The banjo bolt double broke and wouldn’t assemble (;´・`д・´)
I basically hate guides, so we’re removing it.
To be continued.
