NP 205 Yoke Replacement
#18
04-25-2019, 04:11 PM
@fordrealdrive You mentioned the intermediate shaft uses 1310 u joints. Im currently replacing the u joints in all 3 of my driveshafts (1974 f250 4x4 NP205/NP435 divorced) Do they all use 1310 u joints?
EDIT* I was trying to find this post cz I swore I had read it. Finally found it. So I would need 2 1310s and 4 1310/1330s?
EDIT* I was trying to find this post cz I swore I had read it. Finally found it. So I would need 2 1310s and 4 1310/1330s?
73-77 F250 highboys use 2 different U-joints in the 3 drive shafts. The intermediate shaft between the transmission & transfer case uses a standard 1310 series joint. Both the front & rear D-shafts use a combo U-joint...one section of the cross specs out as a 1310 & the other as a 1330. If I remember correctly the driveshaft side is 1310 & the axle yokes are 1330.
memberz, if your rear D-shaft is intact & original it should confirm this & you can use it for reference when you have the front shaft made...your only guess work would then be getting the correct length.
good luck to ya!
memberz, if your rear D-shaft is intact & original it should confirm this & you can use it for reference when you have the front shaft made...your only guess work would then be getting the correct length.
good luck to ya!
#19
04-25-2019, 08:40 PM
Cargo Master
#20
04-27-2019, 04:13 PM
Welp after measuring the driveshafts u joints (I misplaced some of the caps and the front driveshaft from you grinner lol but I found them) I can confirm for anyone else wondering: Trans to T-case 1310 u joint (x2) Front DS to T-case 1310/1330 u joint (x2) and Rear DS to T-case 1310/1330 u joint (x2).
#22
05-02-2019, 06:03 PM
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#23
05-13-2019, 04:29 PM
Originally Posted by fordrealdrive
fordguy2100, sorry for the delay, lifes been hectic recently. Glad you got the u-joints figured out! Just as you've found, every 4spd/np205 highboy I've been under that still had its original driveline uses 1310's in the intermediate shaft & 1310/1330 combo u-joints in the front/rear D-shafts.
One more question hope you can help.
Bought my 4x4 without a transfer case (crappy PO 2wd conversion) so does the trans to t case shaft have the slip yoke facing the transfer case? I assume it's like the front and rear shafts that have the slip yoke connected to the transfer case? Flying blind as my PO had a 2wd shaft and carrier bearing welded in.
#25
05-15-2019, 09:42 PM
Originally Posted by fordrealdrive
fordguy, for a factory correct assembly...the intermediate shaft mounts with its slip yoke to the transmissions output flange/yoke. The front & rear shafts mount with the slips at the transfer case output flange/yokes. If you look at post #3 from number dummy in this thread, he posted the illustration from the 73-9MPC for the correct driveline orientation. The single cardan driveshafts can be mounted in either position without issues but the illustration shows how Ford did it!
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Johnkimble
1973 - 1979 F-100 & Larger F-Series Trucks
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06-12-2019 11:00 AM