U-bolt torque spec - 1972 Imperial
#1052277
08/13/11 09:38 PM
08/13/11 09:38 PM
|
Joined: Sep 2009
Posts: 1,377
Tennessee
WyleECoyote
OP
pro stock
|
OP
pro stock
Joined: Sep 2009
Posts: 1,377
Tennessee
|
So the old u-bolts didn't survive dis-assembly for the new leaf springs...  I'll be ordering 4 new ones Monday from Springs-N-Things. What kind of torque specs did these things have from the factory?  PS - Kano Aero Kroil was phenomenal on all other bolts except the u-bolts.  Thanks! 
Wile E. Coyote
Super Genius, Lover of FCA US LLC Products
*************
68 Road Runner (440 4-spd), 71 Superbee (383 slap), 71 Charger 500 (383 4-spd wA/C 1of 182), 72 Imperial, 74 Charger SE (440 sunroof), 84 D350 Crew-cab Dually (440), 75 D300 Dually Tandem (318 4-speed)
|
|
|
Re: U-bolt torque spec - 1972 Imperial
[Re: WyleECoyote]
#1052278
08/13/11 10:03 PM
08/13/11 10:03 PM
|
Joined: Aug 2003
Posts: 12,291
Kent, Wa
340SHORTY
Truck Nut
|
Truck Nut
Joined: Aug 2003
Posts: 12,291
Kent, Wa
|
I agree Kroil is great stuff, smells good to
IIRC somewhere around 50/75 flbs
get the new U bolts from Speedway Motors,, much cheaper....
I am truckless..
|
|
|
Re: U-bolt torque spec - 1972 Imperial
[Re: 340SHORTY]
#1052279
08/13/11 10:43 PM
08/13/11 10:43 PM
|
Joined: Sep 2003
Posts: 1,168
Vancouver, WA
MoparMarq
super stock
|
super stock
Joined: Sep 2003
Posts: 1,168
Vancouver, WA
|
From '72 FSM: End of chapter 17; U-bolt nuts (all except 7-1/4" axle) 45 ft-lbs. 
|
|
|
Re: U-bolt torque spec - 1972 Imperial
[Re: MoparMarq]
#1052280
08/13/11 11:14 PM
08/13/11 11:14 PM
|
Joined: Sep 2009
Posts: 1,377
Tennessee
WyleECoyote
OP
pro stock
|
OP
pro stock
Joined: Sep 2009
Posts: 1,377
Tennessee
|
Quote:
From '72 FSM:
End of chapter 17;
U-bolt nuts (all except 7-1/4" axle) 45 ft-lbs.
Sure felt like 4,445 ft-lbs coming off!  !!!!
Wile E. Coyote
Super Genius, Lover of FCA US LLC Products
*************
68 Road Runner (440 4-spd), 71 Superbee (383 slap), 71 Charger 500 (383 4-spd wA/C 1of 182), 72 Imperial, 74 Charger SE (440 sunroof), 84 D350 Crew-cab Dually (440), 75 D300 Dually Tandem (318 4-speed)
|
|
|
Re: U-bolt torque spec - 1972 Imperial
[Re: RapidRobert]
#1052282
08/14/11 12:08 AM
08/14/11 12:08 AM
|
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOc !
The village idiot's idiot
|
The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
|
Quote:
Quote:
Sure felt like 4,445 ft-lbs coming off!
I never unscrew the nuts, I split them w a nut cracker then chase the threads w a "thread chasing" die, not a regular die. road debris deforms the threads & they rarely come off easy but w the above new nuts will spin on by hand. Yes 45 sounds low but that's what the FSM lists
Yeah ...I would agree ...some of the road-debris in NE can-be a real maggot-farmer ! 
RR ... I just buzzed off a set of U's by-hand from a motorhome Dana 70.... JUST GET a big breaker-bar !!  
|
|
|
Re: U-bolt torque spec - 1972 Imperial
[Re: dOc !]
#1052284
08/14/11 12:27 AM
08/14/11 12:27 AM
|
Joined: Sep 2009
Posts: 1,377
Tennessee
WyleECoyote
OP
pro stock
|
OP
pro stock
Joined: Sep 2009
Posts: 1,377
Tennessee
|
Quote:
Quote:
Quote:
Sure felt like 4,445 ft-lbs coming off!
I never unscrew the nuts, I split them w a nut cracker then chase the threads w a "thread chasing" die, not a regular die. road debris deforms the threads & they rarely come off easy but w the above new nuts will spin on by hand. Yes 45 sounds low but that's what the FSM lists
JUST GET a big breaker-bar !!
The breaker bar and pipe is HOW the U-bolts didn't successfully make the dis-assembly phase...
|
|
|
|
|
