Bookmark this page.... new material added from time to time
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this page is not fully completed yet.... just started on it!! Some Areas have info pages so go looking around!
Note: the original PB relay R10D-E1-L4-V700 is NO LONGER MANUFACTURED This was used ONLY in the MCI JH16 Mid and Later version machines.
There is NO DIRECT REPLACEMENT made today
This was a FORM "D" relay... a 'Make-Before-Break' relay... that in itself isn't the problem....
for some reason the POLES of the relay are not the standard R10 Poles...
thus a standard R10 relay will NOT work as a replacement....
as of November 2017 There may be BRAND NEW OLD STOCK R10D relays available from :
These are slightly different from the original relay but should work fine...
if they are actually real R10D pin out relays !!
But be aware there have been reports some few R10D relays are really R10 pinout relays...
meaning they will be worthless as a direct replacement....
so you need to check that these are real R10D relays.
I have NOT checked that these relays are actual R10D pin outs.
Also Note that all R10 4 pole relays LOOK THE SAME !!!
Here are pictures of the shell of a R10D and a R10 relay... indicating the poles and contacts
