Installing new Spartan Locker in 9.5” axle

[mbuck]

My spartan has been great. Yours in and running yet?

 

[auttiman]

 

[3wbdriver]

I'm new to these and considering one. I am led to believe you can install the locker parts without removing the bearing caps on our differentials. Is this so. I have a manic paranoia about doing anything to mess up the gear lash after a couple bad experiences with a 72 Blazer rear end many moons ago. I'm debating on one of these or just biting the bullet and paying to get an Eaton locker setup.

 

[Pin_Head]

Yes, you can install a lunch box locker like the Spartan without removing the carrier. You only need to remove the pinion gear (aka spider gear) pin.

 

[William839]

Any updates on these ? Any negative feedback? I’d like to order one for my diesel but worried they won’t hold up to the torque .

 

[cruisermatt]

Any updates on these ? Any negative feedback? I’d like to order one for my diesel but worried they won’t hold up to the torque .

These have been around for 50 years.

If you have a heavy truck and more power then stock then it is really a lot better to spend a bit more money on a carrier-replacement locker, ARB, Harrop, Detroit, Grizzly, etc. The big weakness with the lunchbox lockers is that they still go thru the stock crosspin. I've broken four of them, twice was lucky and clean breaks and was able to slide in a spare crosspin and be fixed fast but the other two times broke the carrier as well.

The other big weak link with a automatic locker will be the rear hub studs getting pounded with the truck being locked on the street.

 

[William839]

These have been around for 50 years.

If you have a heavy truck and more power then stock then it is really a lot better to spend a bit more money on a carrier-replacement locker, ARB, Harrop, Detroit, Grizzly, etc. The big weakness with the lunchbox lockers is that they still go thru the stock crosspin. I've broken four of them, twice was lucky and clean breaks and was able to slide in a spare crosspin and be fixed fast but the other two times broke the carrier as well.

The other big weak link with a automatic locker will be the rear hub studs getting pounded with the truck being locked on the street.

That’s what I was figuring , 300 bucks was too good to be true, I’m weighing about 6300Lbs plus the 4Bt it pushing 400 ft Lbs of torque if I had to guess… unfortunate cause I’ve heard good reviews on these but don’t want to do things 2X

 

[cruisermatt]

That’s what I was figuring , 300 bucks was too good to be true, I’m weighing about 6300Lbs plus the 4Bt it pushing 400 ft Lbs of torque if I had to guess… unfortunate cause I’ve heard good reviews on these but don’t want to do things 2X

they really are more suited to lightweight budget trail rigs, Pickup/4runner/Samurai etc

I ran them front and rear in my FJ62 for five years, broke a ton of stock birfs before I went RCV (which have been fine since), and after going V8 in 2018 I broke the rear locker three times (twice in one trip), never put it back in the rear after that and just last week installed a Grizzly in the rear.

 

[Broski]

or tap on the side of the hub with a brass hammer.

This is how I like to do it !

 

[Broski]

Since the cone washers are painted, rotate them first to break the bond using snub nose pliers or similar.

Bad idea

 

[Rusty Marlin]

That looks like a fun trip. I love "the road less traveled".