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mudmanjw -> john deere front diff parts work (5/2/2007 12:21:10 PM)
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Well, i read on a post a few weeks back that the john deere gator used tha same front diff as the sportsmans. My front diff started acting up and when i took it apart it was just dirty. One output seal had failed and the inside was very dirty. Everything was ok except my rollers. they were a little rusty so i decided to try the john deere rollers for $15 or $18. I called the local dealer to order them and he said that his diagram showed that they come with the cage for 55 bucks, so i decided to give them a try(even though i didn't need the cage). He called me a couple of days later to tell me that the cage comes with the springs and not the rollers so he was ordering me a set of rollers. I went to pick em up a few day later and i bought the cage assembly (cage, springs and wear plate) on the condition that i could return them if it didn't work. I guess he didn't want to get stuck with them. The rollers were exactly the same as the popo. A direct replacement. The cage was a little different. It was made of black plastic and was slightly longer (less than 1/8") than the popo. I measured the cage and cage cavity a few times and confirmed that even though it was a little longe it would fit. Its construction looked a little sturdier. The slots on the outside were filled in and the extra length went into the beefing up the outer rings of the cage. The slots for the wear ring to slide on are offset from the popo ones. they line up with the rollers instead of between them. The springs are a bit stiffer. The wear plate was also a bit different. The dimensions were exactly the same but it had a sort of star-shaped pattern to it instead of the popo's circle. I have a spare diff and pulled it apart to check that one and it has the same exact wear plate. I believe it was off an 04 700. I have pics below.
Anyway i put them in and everything works fine. Only a couple of things i noticed, when taken out of 4wd it takes a little while longer to shift out of 4wd. My diff used to take a while anyway. I sometimes used to shift into reverse to get it out but it still takes longer than before. Also one time the diff stayed in 4wd(with the switch on) while in reverse but witout pushing the overide button. The only thing i can see that could be causing the diff to stay in 4wd a little longer is that because the wear plate slides are lined up with the rollers and the cage is slightly longer, the teeth on the wear plate may be contacing the rollers slightly and holding them longer in the locked position. Never once did the diff shift into 4wd once it had disengaged and it always goes into 4wd immediatly when wheel slippage is detected. I'm going to leave it in for a while and to see if it holds up and check its durability. Imay also pull it down one more time to check if the wear plate teeth are indeed contacting the rollers and if it is, maybe shave them down to reduce contact.
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