1983 FJ60 front axle job questions.

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Should be concerned that there are some sort of "burn" or friction marks on the birfield ? It's all stock '83. What causes this and if it is a concern, is there anything I should do outside of getting a new birfield to prevent this further ? Or is this all ok ?

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Meh, it's fine... More important is the condition of the inside of the birf where the balls ride. snap some pics before you take it apart then start disassembling so you can clean them up and regrease them.
 
Chances are they they aren't very worn (the balls make grooves in the faces of the birf) since these are part time 4wd and people who don't wheel a lot don't tend to even use 4wd. Swap sides with the birfs while you're at it. That way they won't continue to wear on the original drive side.
 
Thanks Stump, I'm going to take you up on the "pictorial" analysis of the bird components. Weather is still good so I got a chance to disassemble and clean up the birf, I haven't reassembled yet. I knocked the inner axle from the bell housing using 2" PVC - both retaining rings survived ! I had purchased those rings OEM to replace, but I may not if they are still good. Here go the pics (in several posts).

1) Ball Bearings
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2) Outer cage

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5) Inner Joint - note that there is some paper towel lint on the joint. I am going to re-clean and air dry again before disassembly.
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As Stump was alluding to, I don't wheel or anything, at the worst backcountry forest service roads as I am a hiker and backpacker not a rock-crawler. Given that, can I reuse this birf ?
 
Looks pretty good. I would run it, with new c-clips.
 
OH, yeah. Those look good, no deep grooves on the inside of the birf. I would swap the birfs, meaning put the one that was on the long side on the short and vice versa.
I'm not confident your inner retaining rings will survive the reinstall. the one looks stretched. The trick is to use a ziptie to compress the inner retaining ring real tight when you force the inner axle back into the birf.

Good job so far.
 
One more thing I wanted to add. Once I seperated the inner shaft from the outer birf, I was able to completely disassemble the rest of the birf (remove steel balls, outer cage and race) by hand. That is, i was able to twist/turn everything without the use of any other tool and remove it. Is the stock birf supposed to be like that ?
 
fjgdk said:
One more thing I wanted to add. Once I seperated the inner shaft from the outer birf, I was able to completely disassemble the rest of the birf (remove steel balls, outer cage and race) by hand. That is, i was able to twist/turn everything without the use of any other tool and remove it. Is the stock birf supposed to be like that ?
Click to expand...

Yup. as long as the balls didn't just fall out...
 
Cool to see all that so up close and broken down. Thanks for sharing to that extent.
 
Stumpalama said:
OH, yeah. Those look good, no deep grooves on the inside of the birf. I would swap the birfs, meaning put the one that was on the long side on the short and vice versa.
I'm not confident your inner retaining rings will survive the reinstall. the one looks stretched. The trick is to use a ziptie to compress the inner retaining ring real tight when you force the inner axle back into the birf.

Good job so far.
Click to expand...
Your response gives me some relief hehe. I was sitting at work today worried that I'd be shelling out new $ for birfs.

i had another pic of the birf bell housing prior to disassemply but with the inner shaft removed. Unfortunatley I cant make out which sides of the race and cage go face out and which face in. There was too much grease in the housing at the time. Any pointers ? I think I can figure it out, but any assistance is helpful.
 
the blue burning mark is on all, no problem
but yours are worn and better to replace or do it again later, they might fail but I drove a lot with worn out ones.
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using an old smashed c-clip is just stupid to even consider.
ok, sorry, dutch be direct talent: refrase and be polite, " I would not use an old used and smashed c-clip but maybe it is a good idea but I doubt it involves a paradigm shift"
:cheers:

more exploded cage pictures in link below, after 8 error weeks they seem to get all pictures back and it should be fine tomorrow :banana:

hj60.freeforums.org • View topic - Birf-propeller-shaft-diff-yoke-flange-spider-snap
 
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