[ROKTOY]

Friday I broke my front 4.88 ring gear out on Sledge Hammer. I was idling along through a relatively easy area with the front ARB unlocked when I heard a bang. Turned out to be a recurring noise every 12 feet or so. Ran what I could through the easy spots. Bad Karma pulled me, or let me winch off him when I got stuck. Finally got off the trail with his help and the help of others in our group. Thanks guys!

Pulled my axle apart Sunday night and found lots of metal chunks in the dif housing.

Here's the cleaned up gears. There is one ring gear tooth (arrow) completely missing to the root. I think this is probably what initially broke. I think the other teeth and the pinion damage I caused trying to drive out as best I could.

<IMG width=400 height=300 SRC="http://www.pirate4x4.com/ubb/uploads/brokengear.jpg">

I checked out the third member pretty closely when I disassembled it and here is what I found:

Wear pattern looked fine
Backlash was about 0.013"
Pinion preload was essentially zero (expected)
Pinion endplay was zero
Pinion nut still staked down fine
All bearings looked very good
Crush sleeve looked good
All hardware down tight

This ring gear was installed about 14 years ago and I added the ARB to it a little over ten years ago. It is a Richmond gear set and for what it's worth I have probably put over 150k miles on the truck since this set was first installed. Obviously, I haven't put that much mileage on this gear set since it is the front set.

I think it just finally spit a tooth due to fatigue. This non-OEM Toy stuff just does not last.......

Anyway.....gotta get it all back together for the AZ Jamboree this Friday.....

Jay

[ 10-15-2001: Message edited by: ROKTOY ]

[ 10-15-2001: Message edited by: ROKTOY ]

[ 10-15-2001: Message edited by: ROKTOY ]

 

[AZToy]

Jay. we just got back 6:30pm Monday. Give me a call at the shop tuesday morning and will make arrangments to get you the set of 4.88 I have.602-944-2411
Mark

 

[Toyota_Jim]

I thought you rolled your truck Jay? Didn't you sell it or did ya fix it?

 

[GRABBER]

Thats pretty bazzar. <IMG SRC="smilies/eek.gif" border="0"> Since you have ran that gear set so long. Especially in the front. Obviously not an install prob. The metal must have just gave out. <IMG SRC="smilies/rolleyes.gif" border="0"> Do you really think The OEM metal is any better than Richmonds, or is 150K miles about what a person should expect from a ring and pinion that is wheeled hard. <IMG SRC="smilies/frown.gif" border="0">

 

[pmurf1]

That'll do it Jay. Still can't believe you drove back at night. You missed the Clawhammer night run and the VW block in the fire at 1 am. I'm working on some pics right now. No action shots of you though in my camera.
I'm gonna order another set of 5.29's shortly and weld up a spare carrier for community use.

 

[NE-RokToy]

wow you only got 14 years of good wheeling out of a set of gears.. what a rip off <IMG SRC="smilies/tongue.gif" border="0"> I think anyone would be satisfied with the number of trails that gearset has under its belt

 

[fatkid]

Did Pazuzuzuzu set em up for ya? Hmmmm....

 

[OOP'S]

Fourteen years, sounds pretty good to me!!!!You were lucky it was the front, I blew the rear at JV and had to swap the front to therear to get home.

 

[little_joe]

If you woulda had a solid spacer instead of that <IMG SRC="smilies/rainbow.gif" border="0"> crush sleeve, that gear would have lasted another 15 yrs. <IMG SRC="smilies/rasta.gif" border="0"> <IMG SRC="smilies/smokin.gif" border="0"> <IMG SRC="smilies/devil.gif" border="0">

 

[97Taco]

Originally posted by OOPS:
<STRONG>...I blew the rear at JV and had to swap the front to therear to get home.</STRONG>

can u do that? i didnt think that would work.
i thought rotation or some thing was differnt?
in that case could i put a rear v6 thrid up front on my 84 axle?

thanks
Brent

 

[OOP'S]

Originally posted by 97Taco:
<STRONG>can u do that? i didnt think that would work.
i thought rotation or some thing was differnt?
in that case could i put a rear v6 thrid up front on my 84 axle?

thanks
Brent</STRONG>

Yep!! That is what I have. They are the same.
<IMG SRC="smilies/usa.gif" border="0"> <IMG SRC="smilies/usa.gif" border="0">

 

[97Taco]

Originally posted by OOPS:
Yep!! That is what I have. They are the same.
<IMG SRC="smilies/usa.gif" border="0"> <IMG SRC="smilies/usa.gif" border="0">[/QB]

WOW!! that is too cool!!!
i was hoping that you could do that!

but is there a differnce between front and rear gears?
arent they cut differnt or something?
i know you said that you used your front diff in the back, but isnnt there strength issuses there?
Sorry i am kinda new at this whole gear thing <IMG SRC="smilies/smile.gif" border="0">
thganks Brent

 

[dangerber]

Originally posted by Toyota_Jim:
<STRONG>I thought you rolled your truck Jay? Didn't you sell it or did ya fix it?</STRONG>

Me thinks you are thinking of Joe Chacon. He rolled his rig, and is not building another one. <IMG SRC="smilies/redface.gif" border="0">

 

[Toyota_Jim]

Oh it was his rig, must have gotten them mixed up. Wonder why he isnt building another?

 

[FattyCBR]

Originally posted by 97Taco:
<STRONG>WOW!!
but is there a differnce between front and rear gears?
arent they cut differnt or something?
i know you said that you used your front diff in the back, but isnnt there strength issuses there?
<IMG SRC="smilies/smile.gif" border="0">
thganks Brent</STRONG>

They are the exact same 3rd. Different cut is with a Reverse Cut gears (RC).

 

[97Taco]

thanks!!
clear as a bell now. <IMG SRC="smilies/beer.gif" border="0">

brent

 

[TNToy]

<font color="yellow"
You were thinking of Joe Chacon whose truck is (was) called LOCKTUP, not Jay Kopycinski whose rig (and POR name) are ROCKTOY.

Jay, what the heck is up with your website? all the images on the hompage went

.</font>

 

[ROKTOY]

Joe…..come on back down……so I can smack ya! Crush sleeve……geeeezzzz!

My web page was killed by my now defunct ISP. It’ll be back soon.
Watch for a posting with the new URL.

Jay

 

[4Wheeldog]

quote:
--------------------------------------------------------------------------------
Originally posted by 97Taco:
WOW!!
but is there a differnce between front and rear gears?
arent they cut differnt or something?
i know you said that you used your front diff in the back, but isnnt there strength issuses there?

thganks Brent
--------------------------------------------------------------------------------

They are the exact same 3rd. Different cut is with a Reverse Cut gears (RC).

This is why it finally failed. Diffs just aren't as strong running backward, and that is what std front diffs do....Same as running rear in reverse for the same distance. <IMG SRC="smilies/bounce.gif" border="0"> <IMG SRC="smilies/bounce2.gif" border="0"> <IMG SRC="smilies/bounce.gif" border="0"> <IMG SRC="smilies/bounce2.gif" border="0">

 

[VT_Toy]

It's great when Toyota owners talk about mileage <IMG SRC="smilies/biggrin.gif" border="0"> "Only 150k miles"