DIY Front Disc Pads, Inner Oil Seals, etc
If you like getting dirty
1996 Prevost bus/mh with Meritor brakes.
My front disc brake slide pins were sticking out past the boss less than .250". When new the pin sticks out about .625. Mx manual section 12 page 17 &18 says to pull the wheel and inspect, So, that's what I did. The inner pad had about .200" of fiction material remaining. When new it has .910". The outer had .300" remaining. When new it has .570".
Since these Rockwell/Meritor disc brakes are a single (inner) piston design, the inner pad wears much faster than the outer. That's why the inner pad is so much thicker than the outer when new.
While I had the caliper off:
Also removed hub/rotor
cleaned bearings, slide pins, bushings, replaced o-rings on pins
Lubed caliper, slide pin, bushings, slack adjuster, tie rod, king pin
Changed frt right inner oil seal w/Scotseal SKF # 35066 = Prevost# 610870
Changed outer gear oil hubcap w/Road King 343-4024 = Stemco 343-4024 = Prevost# 611252
replaced brake pads w/new – Meritor# KIT15615PM or SR27017173 per wheel, or Meritor# KIT15625 per axle.
replenished gearoil with Amsoil SVG 75w-90
reassembled everything
set wheel bearing pre-load/end play to .002”
adjusted brake
torqued lugs nuts 450 ft lbs
Test drove it
Will do the same to the left front soon. Drive and tag axle brakes still have plenty of meat.
Don't tackle this job if you don't like getting dirty
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