Author Topic: Greasing a square front shaft (Read 3345 times)

UKMyers · « **on:** Aug 30, 2007, 03:08:35 PM »

I try to grease my square front shaft before every run. Last time I stuck it on a 4 point lift and at full slip I covered the inner piece and lowered it down. Aside from drilling it and putting in a temp zerk or taking it apart anyone have a good technique for getting a good amount of grease in there? It gets to making a lot of noise after it slings all the grease out.

jimbo74 · « **Reply #1 on:** Aug 30, 2007, 03:18:09 PM »

not sure its really a aprt that can hold grease em unless you can seal it up with some type of rubber boot......

UKMyers · « **Reply #2 on:** Aug 30, 2007, 03:19:41 PM »

I know it doesn't hold grease that's why you have to grease it every trip. I usually just pump some on the inner shaft and work it into the crack with my finger. I was just curious if anyone had a cool trick they used.

CTENG in KS · « **Reply #3 on:** Aug 30, 2007, 03:21:23 PM »

Shoulda made it slip-side-up like mine so you just fill teh bottom big tube with lots o grease.

Willy Mammoth · « **Reply #4 on:** Aug 30, 2007, 03:41:22 PM »

Grease, why? All that is going to do is hold dirt and make a lapping compound.

The noise is normal for a square shaft unless you are hearing it squeak, most rattle when in 2 wheel drive and get quiet when in 4 wheel.

If it is slinging it all off you are turning it too fast anyway.

Tallchevy · « **Reply #5 on:** Aug 30, 2007, 04:42:27 PM »

I put some grease in it when I built mine. I haven't greased it since. I don't hear my shaft making any noise when driving

.............

I know why I don't hear it, I've got the stereo cranked

MiniSimp · « **Reply #6 on:** Aug 30, 2007, 04:58:30 PM »

I don't get it....why grease a square shaft? The noise from a square shaft is only in 2wd with the hubs locked.

x100

79coyotefrg · « **Reply #7 on:** Aug 30, 2007, 05:19:58 PM »

and what dang crack

Shamb · « **Reply #8 on:** Aug 30, 2007, 06:00:12 PM »

Quote

I don't get it....why grease a square shaft

Exactly what I was going to say, ITS A SQUARE D-SHAFT!

You really think its gonna do any good to slap grease on it just for dirt ect to get caked on and or slung off?

My buddies run square d-shafts and have never greased them for a good 5 years now... absolutely no problems.

You can see where the metal has wore down MAYBE 1/16" ... whoopty!

locktup · « **Reply #9 on:** Aug 30, 2007, 06:32:40 PM »

I never greased mine when I ran one. It lasted 4 years before I broke the Cardon Joint at Moon Rocks.

Jason

Misfit4Runner · « **Reply #10 on:** Sep 01, 2007, 05:28:37 PM »

moral of the story is... dont grease your square shafts

93tonkatoy · « **Reply #11 on:** Sep 01, 2007, 05:47:00 PM »

is it possible to install a shock boot over the slip? probably wouldn't be perfect, but might work to keep dirt/ mud out.

Willy Mammoth · « **Reply #12 on:** Sep 01, 2007, 05:53:37 PM »

If you use the truck like you need a square shaft the boot won't last long.

My shaft is all banged up and the flanges on the diff's are rounded off along with the bolts just from a couple trips out.

BLACKDOG · « **Reply #13 on:** Sep 01, 2007, 11:03:37 PM »

Quote from: 93tonkatoy on Sep 01, 2007, 05:47:00 PM

is it possible to install a shock boot over the slip? probably wouldn't be perfect, but might work to keep dirt/ mud out.

just put it slip side down so it all dumps back out

if you've built it right, there's not a lot of slop in them, therefore, not a lot of space for crud to get in. Even if it does, it'll sling back out, just like the grease

Misfit4Runner · « **Reply #14 on:** Sep 02, 2007, 09:12:05 AM »

I'm sure if it was round a neoprene boot would work but because of the corners I don't think it would be able to conform that quick and leave lil gaps on each side of the corners.. but I know they have thinks like them made for mountianbike and motocross forks... same principle

Oddmar · « **Reply #15 on:** Sep 02, 2007, 11:13:59 PM »

I'd put in a grease zerk and put the shaft male-side up, and double zip-tie a mountain bike inner tube section to it near the u-joints. That'll keep the grease in and the dirt out. Be sure to take it off and clean it first though.

BLACKDOG · « **Reply #16 on:** Sep 02, 2007, 11:23:59 PM »

Quote from: Oddmar on Sep 02, 2007, 11:13:59 PM

I'd put in a grease zerk and put the shaft male-side up, and double zip-tie a mountain bike inner tube section to it near the u-joints. That'll keep the grease in and the dirt out. Be sure to take it off and clean it first though.

In theory, its a good idea, but I've seen people put those zerks in, and then bust them off on their first run

Never thought about the inner tube though, thats a good idea. When I built mine, I actually put some duct tape around the male shaft, mostly to fill the little gap for slop.

might help do the same thing as the inner tube though, can't say if the duct tape is even still in there, I haven't torn it apart since I put it in.

ROCKWRANGLER · « **Reply #17 on:** Sep 04, 2007, 11:23:07 PM »

Hammerhead · « **Reply #18 on:** Sep 06, 2007, 02:56:14 PM »

Seen it done both ways:

Run it dry and don't worry about it. Male half capped. Female half towards T-case so the junk falls out.

If you insist on greasing you'll just have to deal with it slinging out. You can put a flush type aviation zerk at the top of the outter tube so the grease works its way down the shaft and purges the dirt as it works. The Bicycle tube works for a while but gets torn up rapidly so you'll be changin' it out often...

superyota · « **Reply #19 on:** Sep 07, 2007, 09:37:14 AM »

x2 on the duct tape. i did the duct tape on mine about two years ago and put grease on the duct tape. never had any noise from it. works great.

UKMyers · « **Reply #20 on:** Sep 07, 2007, 10:07:15 PM »

My only purpose in greasing it is to keep it from clacking around and that's it. It just takes up some of the slack.

MiniSimp · « **Reply #21 on:** Sep 09, 2007, 09:46:22 PM »

Quit driving in 2wd with your hubs locked.

fj40forlife · « **Reply #22 on:** Sep 09, 2007, 09:58:30 PM »

i wouldnt. drive shafts dont move to much unless You have Big up travel etc. just run it. if it breaks make a new one.

UKMyers [OP]

UKMyers [OP]

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