datzenmike Posted October 1, 2008 Report Share Posted October 1, 2008 (edited) Other than length/spline, will the D-21 Hardbody/Pathfinder axle (with disc brakes) and the wheel bearing fit the 620/720 H-190 axle tube??? They look like this: http://i138.photobucket.com/albums/q251/datzenmike/720stuff018Large.jpg[/img]"] Well I'm going to start pulling a Path 4.625 H-233 rear disc axle this w/end. It does not have the optional LSD. The yard owner is cool with that. I told him I need to remove and take a good look and do some measuring and then decide on it. Hopefully the pinion yoke fits the later 720 drive shaft, that would be a plus. I think I'll try the 4.625 to compensate for the 33" tires I'm using, stock was 4.375 but that rear lunched two years ago. I had a spare in my shed and had it almost in when I checked it... it was the 4:11 from the '82 axle I installed when I built the truck. Too much tire and too little gear makes mike a slow boy. I don't expect to pull it completely on Sat but work is slow next week so maybe I'll get off early and go up and finish the job..... Path rear end out... what a heavy beast! Mmmmm disc breaks! There's a sensor with wires attached to the pinion, some kind of speedo?? I like the E brake. Kind of like a mini drum brake inside the rotor and the cables could be grafted to an H-190. There are two aims here: ONE Disc brakes on a H-190 (620/720) It may be as simple as swapping them off the Path axle onto the H-190 axle. If the C-200 axles are the same as the H-190 then this would work on the 4X4 C-200 as well. TWO A shortened Path rear end with disc brakes, LSD and 4.625 gears that will fit any 620/720. If the above works AND the splines are the same, the H-233 axle tubes could be shortened and the 620/720 axles with discs used. First order of business would be to pull the H-233 and a 720 H-190 axle and compare the splines. If they are the same then the 720 axle will at least fit the H-233 third member. Next the axle length. Remember the Path rear axle assy. is about 3" wider than the 720 axle. They might be the same length and the width increase could be all in the H-233 third member that holds the axles out further. If this is the case then there is no reason to swap the axles and the only way to shorten the width would be to shorten the axle tubes AND the axle. More than I want to attempt. NOTE: if they are identical to the 720 then they could be swapped in to give rear disc brakes. Will the 720 wheel bearing fit the H-233 axle tube? Are the backing plates the same bolt pattern? OK Good or bad here's what I got: ONE The Path axle is longer by at least an inch plus the wheel studs are very slightly longer making it hard to get a measurement. Could be 1.5" like I expected or close, but definitely they are longer. I didn't expect to get both axles out today so just took pictures. http://i138.photobucket.com/albums/q251/datzenmike/720stuff020Large.jpg[/img]"] TWO The Path axles are thicker and 31 splines, the H-190 are narrower, and 29, so forget the axle swap, ain't happening. THREE The 720 axles will fit into the Path axle tube and the back plate bolts line up. Here's an '85 720 axle in the Path tube. Wheel bearings are the same part # too. http://i138.photobucket.com/albums/q251/datzenmike/720stuff019Large.jpg[/img]"] TO DO LIST: Get the Path disc (that also contains the drum parking brake) off and see if it will fit the 720 axle without the drum and shoes on it. It's still possible that the Path backing plate with all the disc brake stuff will fit the 620/720 axle. The bearing will have to be pressed off, the backing plate swapped (if it will work) and the bearing pressed back on. Pretty sure the longer E brake cable from the 720 will swap, It's pretty much in the same position too. Here's the two E brake cables. The 720 axle is... uh just realized I have a pass side 720 axle and the Path is the driver's side. Anyway if you rotate them in your head you can see that they are positioned correctly. Crap I didn't see this earlier. No biggie the Path is clean and only takes 3-4 minutes to unbolt the axle. Should check the other side to be sure they are the same length L and R. http://i138.photobucket.com/albums/q251/datzenmike/720stuff021Large.jpg[/img]"] OK today I stripped the drum and shoes etc. off the 720 axle, likewise, I pulled the caliper and rotor off the Path. The Path also has a small drum on the front inside of the rotor with two shoes on it. Looks like a mini drum brake and is worked by the E brake cable. Even has the star wheel adjuster too. Looks like there is extra space needed between the bearing/backing plate and the outer axle part where the wheel studs are to accommodate the E break n the Pathfinder. The Path disc brake stuff is about 1/2" wider than what the 720 axle has on it. Only easy way would be to shorten to 620/720 axle length, trim the diameter and re-spline to 29. You would have to put the larger Path grease seals in the H-190 axle tubes because the Path axles are thicker. Now the Path axle with rear disc and E brake would fit the H-190 housing. It would be about 1 inch wider though. I'm bummed. I would like to run the complete H233 axle assy. but it is too wide by 3", I would need to shorten the axles AND the housing tubes about 1.5" per side to fit and look right under my 620. I just dunnoh. Edited October 12, 2008 by datzenmike Quote Link to comment
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