My ‘54.1 has that idler gear, works great, never could see how PTO would work ‘til I saw idler on EBay, never found any info indicating it’s existence.

Ed
Attachments
8A0DF2B0-B865-4D28-918B-0D5ECCE98C22.jpeg (332.53 KB, 114 downloads)
DA31FD51-BFCD-4E1E-8C15-56A9D383A1AA.jpeg (220.17 KB, 38 downloads)

Last edited by EdPruss; 09/04/2022 3:26 AM.
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.