OZM29C Posted March 12, 2020 Share Posted March 12, 2020 When I rebuilt my weasel T84 transmission I incorporated a few modifications that I hope will help to extend the life of this transmission. I fitted high capacity bearings front and rear. I substituted the pilot rollers between the main drive gear and the main shaft with a bronze floating bush. I fitted an oil seal to the front bearing retainer cap in lieu of the cork seal and then fitted viton o rings retained by nylon collars to the selector shafts. I posted previously about using a generic metric seal for the transmission output shaft. I was unable to source a weasel cluster gear so I have fitted a standard MB/GPW Jeep cluster gear. I machined a thicker thrust washer to compensate for the difference in the overall length between the two cluster gears. The Weasel cluster gear is the longer of the two. I also fitted new synchro blocking rings and a selector shaft detent ball assembly. The true test of my work will come later this year. Cheers. JW 2 Quote Link to comment Share on other sites More sharing options...
Jesse Browning Posted March 12, 2020 Share Posted March 12, 2020 Nice work. I found when I rebuilt my T-90 back in 2013 that there were several rock crawler companies that had single parts to entire transmissions for sale. 1 Quote Link to comment Share on other sites More sharing options...
Jim Gilmore Posted March 12, 2020 Share Posted March 12, 2020 John, There is a modification publication that shows how to use the MB/GPW cluster gear in the Weasel T-84. I'll dig it out of my files......but I think you used two of the jeep trans spacers to use that cluster. I'll post it when I find what box it's in...... And......don't forget to use that 90 degree pipe elbow on the filler neck to raise the fluid level in the trans.........very important to use it. Jim Gilmore 1 Quote Link to comment Share on other sites More sharing options...
BCA Posted April 14, 2020 Share Posted April 14, 2020 (edited) Great to have a new Weasel forum. I am dissecting an NOS T84 Weasel transmission and very interested to see JW's comment on the length of the cluster gear: I had over-looked that. Also my transmission has a 25 tooth low & reverse gear (the G503 t/m uses a 25 tooth gear) despite the Weasel ORD9 specifying a 24 tooth low & reverse gear. Is this a mistake in the Weasel parts book? Any other comments on the interchange between G179 and G503 T84 transmissions? …… Brian Edited April 14, 2020 by BCA spelling 1 Quote Link to comment Share on other sites More sharing options...
Patrick Tipton Posted April 15, 2020 Share Posted April 15, 2020 Nicely done John. I am looking forward to working on my running gear later this year. Patrick Quote Link to comment Share on other sites More sharing options...
Jim Gilmore Posted April 24, 2020 Share Posted April 24, 2020 Brian, How do you know this is a Weasel transmission? This transmission was also used in other vehicles and cars. Might be for one of them? Quote Link to comment Share on other sites More sharing options...
M29C3284 Posted April 26, 2020 Share Posted April 26, 2020 The 1944 edition of ORD 9 specifies a 24 tooth gear but in the 1953 edition, the one from Portrayal press, the 24 has been crossed out and 25 entered instead. This gear, 197376, is also used in the 1939 and 1940 Studebaker Champion cars, but in the parts catalog for those the tooth count is not mentioned. So I checked one of the two T84J's I have, and it also has a 25 tooth low and reverse gear. It is not NOS so the gear could have been changed. I also have a NOS/very lightly used T84J, that had never been taken apart before I restored it, that I can also check but unfortunately I can't get to it right now. From comparing the G503 and the G179 transmissions I have found that at least these parts are interchangeable: 194264 - Thrust washer 903406 - Thrust washer 903407 - Thrust washer 513002 - Countershaft 513003 - Plate 900889 - Cluster gear bushing 512990 - Roller 512998 - Shaft reverse idler gear 903405 - Reverse idler gear 900899 - Synchronizer assembly Quote Link to comment Share on other sites More sharing options...
BCA Posted April 27, 2020 Share Posted April 27, 2020 Jim: I’m pretty confident that my transmission is for Weasel: olive green, has all the G179 features. At this point, given that all the ratios are the same for G503 and G179 transmissions, I am assuming that both use a 25 tooth low & reverse gear. M29C3284: Thanks for the interchange list and the mention of the notation (correction?) in the later ORD 9.There are small changes in the gear numbers that make it difficult to prove G503/G179 interchangeability by part number but some of the number changes are just upgrades or production modifications to an otherwise interchangeable part. ...... Brian Quote Link to comment Share on other sites More sharing options...
Jim Gilmore Posted April 29, 2020 Share Posted April 29, 2020 I have a WW II ORD document that goes over the interchange GPW transmission parts to Weasel. On of the things it covers is using a GPW cluster gear in the Weasel trans. Additional spaces/thrust washers were needed. I will see if I can find it in my computer and post it here. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.