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"These dusty roads ain't streets of goldBut I'm a happy right where I'm at"
Marlin is like the Chuck Norris of the rock crawling world.
Man i thought i was the only one who had problems with gears. We iust arnt breaking the same ones though..I totally stand behind marlin on tcase components after he gave us his rear case after my buddy broke some stock gear in his 4.7 cases at mcr last year. With that said maybe try a differrnt brand as they make work for you
Any chance you have a pic of the obstacle you were on when it happened?
its crazy that you keep braking them tho
If they do warranty, i would try and spend the extra cash on getting there comp ones. If not maybe send them off and get the cyro done. this is crazy, theres no reason you should have broken two sets. maybe its time to go to stock 2.28 or even try another brand of 4.7
i tried looking for info on your rig, but this massive 77 page thread is kinda ridiculous LOL, (in a good way)who built the rear case? how old is the bearing next to the broken teeth on the counter shaft? is it a new or used bearing?is/are/were the #1 and #2 housings paired from the factory? what condition is the main bearing in? for that matter, how do all the bearings look? did you replace them all after the first set of gears went bad?also, what engine you running? hp? trans? tire size?when i first saw these pics, i thought it was a bit odd... also, what number gear set are these?
is this the t-case the first set broke in?
i take it the stock 2.28 gears did fine?
http://board.marlincrawler.com/index.php?topic=78097.msg918917#msg918917here pics of what im talking about.. they were missing (in these pics) on my case with m.c 4.7s. they were also missing in 5 other wheeling buddies rigs where i live. might not even be your issue at all but worth a check.
..... COMPLETELY TRUE... this is where i was headed with my line of questioning... honestly i had pumkin toy figured for anything BUT a newbie, and the c- clip thing only breifly crossed my mind as something a newbie would do, but hey, i make stupid mistakes or over look things sometimesvery possible (considering how fast they broke after you got the new set)missing c-clips on the input and counter shaft gears like "-Matt-" posted here--> http://board.marlincrawler.com/index.php?topic=78097.msg918917#msg918917but if this was true, if you were going forward, the helical gears would cause the input to go towards the grill and the counter shaft towards the tailgate, am i Right? because i have seen on one occasion where the counter shaft has been pushed so far off the 63/32 bearing, it started milling away at the #2 housing and pushed the counter shaft cage bearing up against or (nearly up against) that ledge behind it but i believe (if my memory serve me right )the gears themselves were fine and practically untouched. i know for certain the small set of teeth on the counter were perfectly normal lookingthis leads me believe it's more of an alignment issue, which is VERY rare in the RF1A Transfer Case, but helical gears by design can not take hardly any misalignment at allso make sure both your dowl pins are there, not too deep...and TIGHT!!!... no wiggle wobblealso, as a side note, it's not a good idea to assemble a t-case with silicon. gaskets are a lot thicker than silicon (relatively speaking) and it CAN also create problems inside the case, like oiling and tolerance issues... and don't use both! just make sure the gasket surfaces are completely oil free, brake clean and a rag should do it. sometimes people will take the front of the reduction (or #1) housing to a belt sander to true up the gasket surface... there by causing the input and counter gears to get closer to the #2 housing, tightening the tolerance between the main shaft, and the back of the input... i have seen those two surfaces come into contact before so it's not impossible but something to watch out for....(this is probably not YOUR issue but its good common knowledge)
yeah i figured you knew what you were doing, i'm at a loss... my only explanation would be a bad lot of gears... sorry for making you repeat yourself so much LOL... i just really wanna know what's going on here is all... VERY STRANGE...
i couldnt tell you what # the gearset is, i dont know where to find that out
it should be on the back of the input gear... i think i answered my own question after seeing a few pics... i think yours are like 4041T or something like that
I simply think its a product failure.Also you asked about how my case is mounted under the truck. I'm assuming you are wondering about the t-case housing itself taking stress in strange areas and possibly causing the gears to deflect from one another and cause premature failure? I do have poly bushings at the framerails where the x-member bolts into place. its basically the same concept as the FROR x-member. I believe that if i was somehow having issues with the case taking strange stress from the mount, then the t-case housing would simply crack and split apart before it caused the gears to fail. I dont see how there could possibly be enough movement in the housing itself to allow the gears to deflect enough to break
I think just for good measure, i will also get 5:29 gears installed in the diffs before wheeling it again once the case is fixed
GO !!! That why you buy MC parts!!!!!
[quote : He thinks its just the combo of 4:10 gears and 40" tires that are eating up the t-case. its awesome that he hooked me up with some cromoly gears! whaaaa??? How does that feel like?:0
that was a lot of reading but that 4runner has come a long way, favorite 4runner of all time, and man i think you have a stalker haha
what do you mean "how does that feel"?Well i got the t case back together and everything ready to go! Just gotta round up some more money to get my 5:29 gears put in
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