Grinding Main Gear to Fit MATCO Brakes - Zenith 750 Cruzer

Unfortunately, the main gear has to be slightly modified to fit the Matco brake assemblies that we purchased from Zenith. In this video I'll show you how I went about doing that.
Kobalt Angle Grinder amzn.to/2YBvFdh
***Regarding the axle nut torque, here is a link to the Matco manual: static.veracart.com/matco/ite...
where it states:
"IMPORTANT NOTE: Axle Nut Torque
Your MATCO Mfg. wheel is equipped with tapered roller bearings
that have integrated grease seals on the bearing cone to ensure
the longest possible life. Torque procedures for bearings with this
type of seal are different than for bearings without them. A
common torqueing technique for bearings without seals is to
tighten the axle nut until the wheel stops spinning freely then back
off to the nearest locking feature. THIS TECHNIQUE DOES NOT
WORK ON BEARINGS WITH AN INTEGRATED SEAL. The
reason for the different technique is that the grease seal produces
some drag and makes the wheel feel somewhat stiff when rotated.
Reducing the axle nut torque until the wheel spins freely will allow
the grease seal and the bearing cone to rotate improperly with the
wheel. THE CONE MUST NOT ROTATE RELATIVE TO THE
AXLE. The higher rolling drag is completely normal for this bearing
and allows for longer bearing life since the seal will keep most
contaminants out.
Manufacturer specifications state that the two 1.25 tapered roller
bearings used on the MHE51B will produce 8-10 inch pounds of
torque (drag) when properly installed. A light coating of grease on
the seal will help reduce the drag on initial installation. The drag
will also reduce after the bearings have been installed and the
seal relaxes in the bore. It is important that the axle nut torque be
sufficient to keep the seal from rotating with the wheel. The
following technique will ensure the longest possible bearing life."
Standard DISCLAIMER: Just because we do it, doesn't mean you should. Always refer to your plans.

[@paulgriffin7432]

you need to double check the specs on tightening that bearing hub nut. it looks way to tight. the wheel should freely spin around the axle with little effort.

[@jeffandadambuildazenith6816]

HI! This is from the MATCO manual: "IMPORTANT NOTE: Axle Nut Torque Your MATCO Mfg. wheel is equipped with tapered roller bearings that have integrated grease seals on the bearing cone to ensure the longest possible life. Torque procedures for bearings with this type of seal are different than for bearings without them. A common torqueing technique for bearings without seals is to tighten the axle nut until the wheel stops spinning freely then back off to the nearest locking feature. THIS TECHNIQUE DOES NOT WORK ON BEARINGS WITH AN INTEGRATED SEAL."

[@paulgriffin7432]

@@jeffandadambuildazenith6816 I stand corrected.

[@Mrsournotes]

Hi Adam, vise grip (backwards) on torx driver...we’ve all done that. Welcome to the club! 😆

[@BrianKelsay]

I've seen other plane videos where they are fixing old planes, including the brakes. Usually take the tire off, remive brake shoes, not the disc.

[@user-tl5fi9lz9z]

I'm learning a lot from watching you. I hope to start my Zenith by the end of the year.

[@user-tl5fi9lz9z]

So, What's Deli-Cat? Food? Or Litter?

[@Flatlandmike]

Are those calipers reversible

[@jeffandadambuildazenith6816]

Hi! I'm not sure what you mean.

[@Flatlandmike]

@@jeffandadambuildazenith6816 Its been so long I dont remember lol

[@Flatlandmike]

Oh I rewatch some of it and i mean can you put them on the other side of plane so the bleeder valve can be on top

[@davekarniewicz5811]

Your caliper is the wrong way up mine fitted without any grinding

[@davidwendt2805]

Normally the bleeder valve for brakes is on the top. Air is lighter than oil. That configuration doesn't look like it will work to me. You will never be able to get the air out of the caliper

[@jeffandadambuildazenith6816]

I always pressure bleed from the bottom.

[@BrianKelsay]

Guy ruins powder coating in 3,2,1. 😂

[@user-zh7zj8cw2i]

Bearing is too tight.