What's new
Van's Air Force

Don't miss anything! Register now for full access to the definitive RV support community.

Cotter pin

08FATBOY

Member
I'm looking for the cotter pin part number for the main wheel axle nut. I checked the assembly manual and the Matco manual, both reference pins but don't supply part numbers

Thanks, Rod
 
I'm looking for the cotter pin part number for the main wheel axle nut. I checked the assembly manual and the Matco manual, both reference pins but don't supply part numbers

Thanks, Rod

The correct cotter pin for the Matco axle is Matco part #MSC.125X2COTTERPIN - COTTER PIN Z/P. http://www.matcomfg.com/COTTERPINZP-idv-3325-35.html

The description is misleading as it is not a .125 cotter pin but, I think, a metric size that is slightly smaller diameter. A 1/8" cotter pin is nearly impossible to put in the hole. The Z/P probably means zinc plated as the pin is silver in appearance.
 
That is not the correct part number or pin.

The correct part, per MATCO is: MSC.11x2COTTERPIN

Text below from original post by jask (https://vansairforce.net/community/showpost.php?p=1276989&postcount=15)

"The part number for the cotter pin on the axle nut is the MSC.11x2COTTERPIN. It is on our website at:

http://www.matcomfg.com/COTTERPINZP-idv-3813-35.html

It is steel and is clear zinc plated.

The same size steel pin (7/32) from other sources would work fine.

The wheel on the RV-12 is the MHMHE51B. The axle assembly is the WHLAXLE3A. They are on our website at:

http://www.matcomfg.com/MHE51BESERIE...v-2354-30.html

http://www.matcomfg.com/AXLEASSEMBLYA3A-idv-2537-1.html

Both links provide additional details.

Thank you,

George R Happ
MATCO mfg
801-335-0582 801-335-0581 (F)
www.matcomfg.com"

EDIT: Ok, that was a direct copy and paste, but clearly they meant 3/32". Fractions are hard
 
Last edited:
Thanks Bobby for including the MATCO response!
As Tony mentioned, a 1/8" pin doesn't want to go in much less thru to secure the axle nut.
Confession: At last inspection I used 2 pins inserted from opposite sides since the Home Depot Aviation aisle didn't have anything to fit.
When I mentioned not having the correct pin down the field at the FBO maintenance hangar and coffee supply shack, Harold the A&P/IA (and D-Day Veteran) turned from his dusty desk in the dusty corner and replied "That's the dumbest excuse I've heard in a while!".
Well...the wheels didn't fall off, but I located and installed the correct pins ASAP.
Lesson Learned!
 
Back
Top