Locked Axle
Thread Starter
Instructor
Joined: Nov 2020
Posts: 130
Likes: 41
From: Central/West, NJ
Locked Axle
I just took delivery of a 2013 60th 427 convertible last night. Bought the car in FL (I'm in NJ). After unloading it from the transporter, I was maneuvering it to get it in my garage and it was behaving as if it had a locked axle. Let me just surmise and you all tell me if you think I'm on the right track with both the cause and remedy.
This car is low mileage (<12K) and I have no idea how long it sat at the dealership unused. I'm guessing that the clutch plates for the limited slip haver frozen and in effect, given me a "Detroit Locker". Furthermore, I'm surmising that if I simply drive the car and get the diff fluid up to operating temperature, chances are the clutches will unlock. Does this all sound reasonable?
Raining today and tomorrow, so I wont get out to drive it until probably Wednesday.
Thanks for any insight.
Adios,
Pizza Bob
This car is low mileage (<12K) and I have no idea how long it sat at the dealership unused. I'm guessing that the clutch plates for the limited slip haver frozen and in effect, given me a "Detroit Locker". Furthermore, I'm surmising that if I simply drive the car and get the diff fluid up to operating temperature, chances are the clutches will unlock. Does this all sound reasonable?
Raining today and tomorrow, so I wont get out to drive it until probably Wednesday.
Thanks for any insight.
Adios,
Pizza Bob
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,629
Axle locked as in back of car jacked up, trans in neutral, parking brake off, and if you turn one wheel the other one turns with it. The LSD clutch packs have a 100ftlbs break away value each side, so if you are turning the wheels by hand, your not gong to get the 100lb break away to release the clutch packs to turn that rear wheel independently of the other side.
As for if the LSD clutch pads have dusted up to not release at the 100lb torque value, then as stated, big parking lot to do slow figure 8's to allow fresh fluid to get into the packs to flush away excess dust still in the packs, as you are creating the slow 100lb plus torque to allow them to slip.
On the other hand, if back end is jacked up, trans in neutral, and E brake off, and you can can't turn the wheels (really both, since LDS clutch plates have a 100ft break away value), then suspect that one of the E brakes has locked up isntead. Hence they can dust up over time/can be adjusted too tight/ heat melt to the drum surface, and just a mater of pulling the calibers, the rear discs, and re-adjust the cleaned E shoe brakes shoes to the drum side of the rotors isntead.
As for if the LSD clutch pads have dusted up to not release at the 100lb torque value, then as stated, big parking lot to do slow figure 8's to allow fresh fluid to get into the packs to flush away excess dust still in the packs, as you are creating the slow 100lb plus torque to allow them to slip.
On the other hand, if back end is jacked up, trans in neutral, and E brake off, and you can can't turn the wheels (really both, since LDS clutch plates have a 100ft break away value), then suspect that one of the E brakes has locked up isntead. Hence they can dust up over time/can be adjusted too tight/ heat melt to the drum surface, and just a mater of pulling the calibers, the rear discs, and re-adjust the cleaned E shoe brakes shoes to the drum side of the rotors isntead.
