OptionXIII
NAXJA Forum User
- Location
- USA
Basically the title. Does anyone have detailed information, such as a dimensioned drawing, of how spline geometries differ between fixed yoke and slip yoke splines, specifically for 32 spline outputs?
The context is I'm working to piece together an NP242HD to fit in my XJ. I'm using a HMMWV rear bearing housing to get a speedometer output, and I am considering using an HMMWV main rear output shaft as well. This would give me a shorter rear output yoke than the IRO 32 spline hack n tap kit with the WJ HD rear output. Plus, the HMMWV shaft is already cut for the speedometer drive gear snap rings, unlike the WJ HD main shaft.
I tried swapping the 32 spline 242J front output onto the 32 spline WJ HD rear output and it would not go on. It goes on the front output of the HD case just fine. Is it just a difference in the major OD of the shaft, or the minor ID of the fixed front output yoke? Or are the splines themselves of such different geometry that one cannot be adapted to the other?
I have access to a machine shop for some work, but I need to provide my guy some guidance rather than just grunting and saying make it work.
Ideally I'd like to find a cheap and short output yoke (such as off another '96+ 242J) in the junkyard that works, and get a custom seal retainer made (my guy with the machine shop works for beer and materials cost). That'd be a lot less spendy than having to modify a $200 IRO kit.
This case is well beyond my needs, but I'll be putting it behind a manual transmission so the extra torque capacity will be nice in case of accidental clutch drops, and I like to have rare parts on my XJ.
The context is I'm working to piece together an NP242HD to fit in my XJ. I'm using a HMMWV rear bearing housing to get a speedometer output, and I am considering using an HMMWV main rear output shaft as well. This would give me a shorter rear output yoke than the IRO 32 spline hack n tap kit with the WJ HD rear output. Plus, the HMMWV shaft is already cut for the speedometer drive gear snap rings, unlike the WJ HD main shaft.
I tried swapping the 32 spline 242J front output onto the 32 spline WJ HD rear output and it would not go on. It goes on the front output of the HD case just fine. Is it just a difference in the major OD of the shaft, or the minor ID of the fixed front output yoke? Or are the splines themselves of such different geometry that one cannot be adapted to the other?
I have access to a machine shop for some work, but I need to provide my guy some guidance rather than just grunting and saying make it work.
Ideally I'd like to find a cheap and short output yoke (such as off another '96+ 242J) in the junkyard that works, and get a custom seal retainer made (my guy with the machine shop works for beer and materials cost). That'd be a lot less spendy than having to modify a $200 IRO kit.
This case is well beyond my needs, but I'll be putting it behind a manual transmission so the extra torque capacity will be nice in case of accidental clutch drops, and I like to have rare parts on my XJ.