Who wants to see a 1976 Grenade?

LSUpete

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2,060

• Apr 19, 2019

• #1

I'm upgrading to 4.56 gears and was treated to an episode of "here's your Bronco" this morning. While removing the original parts, I discovered that the rear differential case (where the ring gear bolts onto) had cracked completely around the circumference of the case.

I had to laugh as I was on the phone ordering another Yukon product.

 

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Glass Pony

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• Apr 19, 2019

• #2

EEEk! Good you caught it when you did.

 

Viperwolf1

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electron whisperer

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Aug 23, 2007

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24,322

• Apr 19, 2019

• #3

That's a pretty common failure with the track-lok.

 

OP

OP

LSUpete

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• Apr 19, 2019

• #4

Viperwolf1 said:

That's a pretty common failure with the track-lok.

Click to expand...

So are rattlesnakes in the desert.

 

sanndmann3

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1,774

• Apr 19, 2019

• #5

Yep, that is where they break. Good you found it the way you did.

 

Timmy390

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• Apr 19, 2019

• #6

Mine from 2 years ago....

Tim

 

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OP

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LSUpete

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• Apr 19, 2019

• #7

Gonna need a pinion support too.

 

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sprdv1

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REBEL

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81,747

• Apr 19, 2019

• #8

Glass Pony said:

EEEk! Good you caught it when you did.

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No doubt... Ouch...

 

Yeller

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Rogers County Oklahoma

• Apr 19, 2019

• #9

good time to go to a daytona style too. the bearing life is so much better, with the lower gears the stock support just isn't up to the task.

 

S

SteveL

Huge chevy guy

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Jun 24, 2001

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Loc.

Hawthorne ca

• Apr 19, 2019

• #10

We found a carrier cracked like that in my 72 years ago. The crack was about an inch shy of all the way around

 

Broncobowsher

Total hack

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Jun 4, 2002

Messages

34,884

• Apr 19, 2019

• #11

Good catch, after broken but before it completely exploded.
How sloppy was the backlash? Just thinking if the races on the 3rd member might have spread?

 

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LSUpete

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2,060

• Apr 19, 2019

• #12

Broncobowsher said:

Good catch, after broken but before it completely exploded.
How sloppy was the backlash? Just thinking if the races on the 3rd member might have spread?

Click to expand...

I must be desensitized......never felt a thing.

 

Timmy390

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Conway, AR

• Apr 19, 2019

• #13

Good time to upgrade to a TrueTrac.

Tim

 

Pa PITT

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Stephenville TEXAS

• Apr 19, 2019

• #14

wOW GO BUY A lottery ticket .

 

B

broncosam

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• Apr 20, 2019

• #15

Had the same experience years ago in the '77 F150 4x4 I had at the time. Coming home from one evening, slowed down to turn onto my street, I clutched it and downshifted,let out on the clutch as I turned the corner, and "nothing". At first I thought I missed a gear and shifted into neutral,but figured out that wasn't the case. I locked the hubs in and drove the rest of the way home on the front axle. When I tore mine down I found it had separated right at the flange where the ring gear bolts, it broke so clean it looked as though it was cut with a lazer.

 

bax

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Aug 22, 2005

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14,491

• Apr 21, 2019

• #16

Yeller said:

good time to go to a daytona style too. the bearing life is so much better, with the lower gears the stock support just isn't up to the task.

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This is the best advice in this thread.