Broken Birf

alvarorb · 02-10-08, 11:38 PM

Guys,

I wanted to share these pics with you. Over the weekend I replaced my birfs and axles with Longfields. In the process, I got to clean the knuckle and the broken birf. I thought you may want to see the damage:

The first picture is of the inside of the right knuckle. As the birf broke and we moved the truck a few hundred feet to a flat spot. The turning metal made it's impression on the knuckle.

The second picture is of the pieces that I was able to recover. It is very impressive to see how the birf just shattered.

Tomorrow, I can take more detail pictures of the broken pieces.

Regards

Alvaro

PKP80 · 02-11-08, 12:03 AM

A. you camera and picture quality is fantastic
B. I'm amazed that you've managed with the stock birfs for so long
C. incredible the damage that can be had by just 100 feet of wheel turn, what trail were you running?

Brian894X4 · 02-11-08, 12:09 AM

Was it just the internal cage that broke?

On the solid axle mini-trucks, the bell housing seems to be the most common failure point, hence the ring added for strength on the early Longfields. The 80 birf is a slightly bigger, so I'm curious if it's the bell that goes most often on the 80 birfs as well or is it the cage like here, or is both a common failure point.

Bear80 · 02-11-08, 01:09 AM

It seems like on the 80 series the birfield lets go with either the internal star or cage. I haven't seen anyone post with a broken bell, but that doesn't mean it hasn't happened. I wonder if having extra heat and cryo treatment could help the stock internal star and cage.

alvarorb · 02-11-08, 07:01 AM

The birf broke last summer on the Dusy. The birf bell is fine, what shattered was the internal star.

I posted some pics of the chromoly axle & birf install here:

Longfields

Regards

Alvaro

Tapage · 02-11-08, 08:41 AM

I thought you get much trails from those stock birf Alvaro ..

Sean Hameed · 05-21-08, 04:07 AM

On my 80 axles I am running 4.56 Ring and Pinion, It is runing 35 x 10.50 Boggers. Last event I sheared the ring and pinion, I discounted this as landing on the front wheels on acceleration. Replaced the gears and installed a ARB locker to the front and testing over last week end I broke the front axle. It snapped between the diff and the birfield exactly where the oil seal sits, looked like it was cut with a knife - straight. I am unable to post pictures, but appreciate any advise you can give on this scenario. The axle broke on a mud hole with lockers on. I am hearing about the longfields for the first time in this forum, will this solve my issues. Has anyone heard of a German company manufaturing birfields with needle bearings ??Cheers

Brentbba · 05-21-08, 02:26 PM

Nice pic of Andy in the full write-up Alvaro. Secondary scrubs for him I presume?

alvarorb · 05-21-08, 04:50 PM

Sean,

We don't see that many broken birfs in our group. I think we wheel our rigs pretty hard. What kind of terrain are you wheeling on?
On La Cabra I extended the stops at the end of the front axle to limit the turning radius. I'm OK with loosing a bit of turning radius as a trade off for better birf durability.

Regards

Alvaro

Quote:

Originally Posted by Sean Hameed

On my 80 axles I am running 4.56 Ring and Pinion, It is runing 35 x 10.50 Boggers. Last event I sheared the ring and pinion, I discounted this as landing on the front wheels on acceleration. Replaced the gears and installed a ARB locker to the front and testing over last week end I broke the front axle. It snapped between the diff and the birfield exactly where the oil seal sits, looked like it was cut with a knife - straight. I am unable to post pictures, but appreciate any advise you can give on this scenario. The axle broke on a mud hole with lockers on. I am hearing about the longfields for the first time in this forum, will this solve my issues. Has anyone heard of a German company manufaturing birfields with needle bearings ??Cheers

alvarorb · 05-21-08, 04:50 PM

Quote:

Originally Posted by Brentbba

Nice pic of Andy in the full write-up Alvaro. Secondary scrubs for him I presume?

Thanks!
The doctor is always ready.

Regards

Alvaro

02-10-08, 11:38 PM	#1
alvarorb Cook Free or Die Join Date: Jun 2003 Location: Sacramento, California TLCA# 12833 Posts: 1,514	Broken Birf Guys, I wanted to share these pics with you. Over the weekend I replaced my birfs and axles with Longfields. In the process, I got to clean the knuckle and the broken birf. I thought you may want to see the damage: The first picture is of the inside of the right knuckle. As the birf broke and we moved the truck a few hundred feet to a flat spot. The turning metal made it's impression on the knuckle. The second picture is of the pieces that I was able to recover. It is very impressive to see how the birf just shattered. Tomorrow, I can take more detail pictures of the broken pieces. Regards Alvaro __________________ Alvaro Rodriguez 96 FZJ80 "La Cabra" 08 Tacoma Double Cab 4x4 TCLA #12833 / BRC # 41799 KI7FZJ New web site with blog and pics Norcal wagons website INTI Roof Racks - Make a loan, Make a difference - Kiva.org

02-11-08, 12:03 AM	#2
PKP80 IH8MUD Lifer Join Date: Nov 2004 Location: Los Angeles, CA TLCA# 14900 Posts: 1,634	A. you camera and picture quality is fantastic B. I'm amazed that you've managed with the stock birfs for so long C. incredible the damage that can be had by just 100 feet of wheel turn, what trail were you running? __________________ Sam Shaya 96' FZJ80 convertable 4x4 Labs Rear end/Custom shock mounts KING shocks/ other goodies, but you get the idea. Call Sign KI6KNB "Team Pull-OUT" Phi Kappa Psi

02-11-08, 12:09 AM	#3
Brian894X4 IH8MUD Addict Join Date: Feb 2004 Location: Oregon Posts: 602	Was it just the internal cage that broke? On the solid axle mini-trucks, the bell housing seems to be the most common failure point, hence the ring added for strength on the early Longfields. The 80 birf is a slightly bigger, so I'm curious if it's the bell that goes most often on the 80 birfs as well or is it the cage like here, or is both a common failure point. __________________ 1995 FZJ80, modified for regional expeditions. Click here for more... My main website: In Search of History Expeditions Foreign Toyota 4x4s Military Toyota 4x4s

02-11-08, 01:09 AM	#4
Bear80 Ante up to an 80 series! Join Date: Sep 2004 Location: San Antonio, TEXAS TLCA# 14779 Posts: 2,322	It seems like on the 80 series the birfield lets go with either the internal star or cage. I haven't seen anyone post with a broken bell, but that doesn't mean it hasn't happened. I wonder if having extra heat and cryo treatment could help the stock internal star and cage. __________________ 40th FZJ80 - Range Rover Recovery Vehicle Alamo City Land Cruisers -Benjamin-

02-11-08, 07:01 AM	#5
alvarorb Cook Free or Die Join Date: Jun 2003 Location: Sacramento, California TLCA# 12833 Posts: 1,514	The birf broke last summer on the Dusy. The birf bell is fine, what shattered was the internal star. I posted some pics of the chromoly axle & birf install here: Longfields Regards Alvaro __________________ Alvaro Rodriguez 96 FZJ80 "La Cabra" 08 Tacoma Double Cab 4x4 TCLA #12833 / BRC # 41799 KI7FZJ New web site with blog and pics Norcal wagons website INTI Roof Racks - Make a loan, Make a difference - Kiva.org

05-21-08, 04:07 AM	#7
Sean Hameed IH8MUD Rookie Join Date: May 2008 Posts: 3	Broken Shaft Front Axle On my 80 axles I am running 4.56 Ring and Pinion, It is runing 35 x 10.50 Boggers. Last event I sheared the ring and pinion, I discounted this as landing on the front wheels on acceleration. Replaced the gears and installed a ARB locker to the front and testing over last week end I broke the front axle. It snapped between the diff and the birfield exactly where the oil seal sits, looked like it was cut with a knife - straight. I am unable to post pictures, but appreciate any advise you can give on this scenario. The axle broke on a mud hole with lockers on. I am hearing about the longfields for the first time in this forum, will this solve my issues. Has anyone heard of a German company manufaturing birfields with needle bearings ??Cheers __________________ Sean HameedFJ25,FJ45V,BJ40(14BT),HJ47,HJ60(12HT),BJ75P, HZJ75(1HD-FTE),HZJ70, HZJ70 Project & Unimog

05-21-08, 02:26 PM	#8
Brentbba On the Golf Course! Join Date: Mar 2003 Location: Laguna Niguel, CA TLCA# 13420 Posts: 4,794	Nice pic of Andy in the full write-up Alvaro. Secondary scrubs for him I presume? __________________ Brent '94 White LC; Kaymar Rear Bumper w/tire carrier; Hanna Sliders; ARB winch ready Front Bumper; Slee Transfer Case Skid Plate; Revo 285's, OME 850/863 Heavy 2" lift, INTI Rack; Warn M12000 Winch, Snorkel; Sputnik! TLCA Member #13420

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