Yesterday I did my own 15000 maintenance. Well I was greasing the rear slip yoke on the rear drive shaft and I expected to see old grease come out of the fitting (like on my old truck). I didn't realize I only needed to put a couple of pumps of grease in there and probably put about 25 pumps or more before I stopped. I've since read here that too much grease in the drive shaft slip joint will impede its movement and eventually cause damage because the slip joint becomes hydro locked.
So my question is what’s the easiest way to get the extra grease out? Should I just remove the transfer case end of the rear drive shaft and slide the slip joint apart and dig out the excess grease? Does the slip joint come out easily?
I tried removing the zerk fitting and compressing the slip joint by driving over some parking lot speed bumps etc. but very little grease came out that way :-)
Last edited by FJ_Kayaker : 04-14-2008 at 11:34 AM.
Reason: Stupidity.
I've never done this, so if I am wrong, somebody correct me.
I think you need to removed the drive shaft from the propeller shaft, there are 4 bolts. Then slide the drive shaft out, clean up the mess, reassemble. Torque the 4 propeller shaft bolts to 65 lbs/ft. Put 3 or 4 pumps of grease in there.
__________________
2007 VooDoo Blue / 5AT / 4WD
Rear Diff Hack (Works in 2HI & 4HI) / Rear Diff + ATrac Hack
Rough Country 3" Lift
KU4IY (Yaesu FT-7800)
I've never done this, so if I am wrong, somebody correct me.
I think you need to removed the drive shaft from the propeller shaft, there are 4 bolts. Then slide the drive shaft out, clean up the mess, reassemble. Torque the 4 propeller shaft bolts to 65 lbs/ft. Put 3 or 4 pumps of grease in there.
Yeah, that's what I was thinking I was going to try tonight. Before I started I was kind of wondering how hard it was going to be to slip the drive shaft and propeller shaft apart or if they literally just slip apart and back together (there's plenty of grease in there now, haha). Geeze, I feel like a moron.
Yeah, that's what I was thinking I was going to try tonight. Before I started I was kind of wondering how hard it was going to be to slip the drive shaft and propeller shaft apart or if they literally just slip apart and back together (there's plenty of grease in there now, haha). Geeze, I feel like a moron.
From what I saw the Toyota tech do, it was nothing at all. Just remove the 4 bolts, and that is it. Comes right apart.
__________________
2007 VooDoo Blue / 5AT / 4WD
Rear Diff Hack (Works in 2HI & 4HI) / Rear Diff + ATrac Hack
Rough Country 3" Lift
KU4IY (Yaesu FT-7800)
It comes right apart. Just mark the yoke and the splined shaft so that you install it in the exact same orientation to each other. No sense in taking a chance on a vibration. You only want a thin layer of grease to cover all the splines so it doesn't bind, that's all. A teflon based grease is the best for this but it isn't often carried by local parts stores. GM has a teflon spec'd grease for their slip yokes.
If there's a way that you can exert enough pressure on the driveshaft to compress the slip yoke coupling slowly, it should squeeze all the excess grease out thru the splines. But, with as much grease as you pumped in, that might be very difficult to do.
As a rule of thumb, whenever your greasing zerks on a regular basis, they shouldn't take more than 2-4 pumps.
DEWFPO
__________________ 2007 FJ, 5AT, Sun Fusion Yellow, CQ, UP, GY, RB, 2Q, EL, VS.
"Wanted - young, skinny, wiry fellows, not over 18. Must be expert riders willing to risk death daily. Orphans preferred"
Original newspaper add placed by William Hepburn Russell, founder of the The Pony Express
Make sure to mark everything with a white pen or something that you can see clearly. Putting it back togather is importat because of balance. I would call a drive shaft place just to be shure of what you are doing.
__________________
2007 Black AT 4x4
Convenience Pkg
Upgrade package 2
XM
Air bags all over the place
Lots more "stuff"
I removed the 4 nuts holding the drive shaft to the t-case output. I was able to compress the slip yoke about .5 inches not enough to remove it from the bolts so I removed the zerk fitting and that gave the grease someplace to go. I compressed the slip yoke all the way by hand and it squeezed all my grease and then some out of the zerk fitting hole. I didn't have to seperate anything. Put it all back together (properly torqued) gave one squirt of grease and am calling it good. thanks again.
I removed the 4 nuts holding the drive shaft to the t-case output. I was able to compress the slip yoke about .5 inches not enough to remove it from the bolts so I removed the zerk fitting and that gave the grease someplace to go. I compressed the slip yoke all the way by hand and it squeezed all my grease and then some out of the zerk fitting hole. I didn't have to seperate anything. Put it all back together (properly torqued) gave one squirt of grease and am calling it good. thanks again.
2007 FJ, 5AT, Sun Fusion Yellow, CQ, UP, GY, RB, 2Q, EL, VS.
"Enjoying the Journey"
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