Aww man, now what...drivetrain.

[Optikalillushun]

So i just got done draining and filling the transmission and rear axle with synthetic mobile 1 (roughly 3.5 qts ATF for the trans, 3.5 75/90 for the axle) which were both up to the fill hole and consiquently i knew that by seeing it run out from overfilling a tad ...and now...

...when i took it for a drive i can feel a rumbling in the clutch pedal. almost like i can feel the gears moving. also, when i push the clutch in with the engine running i can hear it almost squeaking. i didnt touch anything on that side of the trans. also, it is chattering a good bit (usually does for the first time pulling out when cold) in 1st when i drove it a few blocks. on the bright side it shifts like butter now.

i also tried to drain the front axle but low and behold...one bolt held me up. its butted up against the spring u-bolt and i cant get either to move (didnt really mess with it after i seen that). arg...

also, i just replaced the rear pinion seal and transfer case output seal and they are both dripping again there a trick to install these guys? i did it by the way i was taught.

 

[FordGuy100]

That sucks man. Hopefully your tranny will get better




That being said, my rear output seal for my transfer case leaks to, on the bottom of the bed there is a bunch of what looks like grease and oil, and the only thing remotly close is the transfer case rear seal, plus that is all oily back there. I hate my BW1345, it was even rebuilt with all grade 8 hardware not to long ago. Should I just put in a BW1356, or upgrade to a stronger TC?

 

[Optikalillushun]

the BWs are stout cases but man i think this output thing is a commen problem.

actually i forgot to ask in the first post...is that feeling normal with syn fluid? or is something *****'d? there was no crud on the drain plug and the fluid was thin but black and stunk.

 

[RKOCH]

The BW 1345 ang 56 are a piece of $hit! Both of the ones I had recieved NP 205 installs. Never another problem.

But the leak @ the output is very common.

 

[sassyrel]

when you go to POUND a new seal--notice i said POUND--think about it--jolt,no????? go get some vaseline--enough puns--and coat the spring seal on the back side of seal--why??? because this will stop the "garter" spring from popping off, and then they wont seal, as no spring pressure----and the vaseline will melt eventually and mix with whatever--and no harm---also, check to see if theres a wear spot anytime you replace a seal--cause even a new one may have a hard time sealing on a low spot-----

 

[Optikalillushun]

i thoughuly lubricated both seals with vasoline prior to install.

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[subway]

just a thought but could the tranny fluid have leaked out the input onto the clutch?

i agree with what was said above, if the yoke itself has a low spot or burr a new seal wont last at all.

can't say for the 5 speed but synthetic made my old 4 speed shift noticably better. i have heard a 1 mpg increase using synthetics which isent anything so scoff at anymore.

 

[Bamfster]

My experience with synthetics has always been that when they get up to operating temp they thin out alot and will push past worn seals alot easier.

 

[tractorman86]

i've heard the same thing.

 

[Optikalillushun]

well the chatter was the usual first time on a cold start then it went back to nothing.

also dont think the rear pinion is leaking as much, Evan suggested i clean replace the vent tubes as they can build pressure...which i didnt even think about. gunna get myself a roll of tubing and do all the lines up to the engine bay, probaly into the intake or some stuff.

 

[Optikalillushun]

Been a few days and everything has seemed to work itself out. the syn fluid was really worth it, i can shift in cool weather just fine now (28-32* in the mornings).

the noises and chatter have seemed to go away as well, all i wanna do is check for any firewall flexing or cracking to be sure it is all good to go.

 

[Petri317]

Heck, my transfer case output shaft seal leaks too, and it's an NP-208. Had the same situation with trucks I had that ran BW-1345 and BW-1356 cases.