Rearend Slop Driveshaft Rotates

95strokerPSU

Member

Jul 29, 2004

986

1

19

Sacramento from Philly

Jul 27, 2008

#1

• Jul 27, 2008

• #1

Yesterday I was under the car switching back to a rubber trans mount and doing a normal under car inspection, and noticed that with the front tires raised and the rear tires on the ground, I can rotate the driveshaft about a 1/2" either way. No side to side or up and down movement, just slightly rotates. I read some older posts that suggest it might be improperly set backlash. Anyone have any input on this?

Thanks

 

R.J.

Member

Aug 20, 2003

813

0

16

Warwick, Rhode Island

Jul 27, 2008

#2

• Jul 27, 2008

• #2

The Mustang drive train does have a lot of "normal" slop in it. Yours sounds excessive and you might want to check you backlash.

 

95strokerPSU

Member

Jul 29, 2004

986

1

19

Sacramento from Philly

Jul 27, 2008

#3

• Jul 27, 2008

• #3

Maybe it's a about 1/2" total (1/4" total). I don't have any howling or weird sounds coming from the rear.

 

ProKiller

Founding Member

Apr 26, 2002

3,064

15

78

PA

Jul 28, 2008

#4

• Jul 28, 2008

• #4

i'm by far no expert here, but mines about that much too and have no problems.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

33

129

Jul 28, 2008

#5

• Jul 28, 2008

• #5

As noted, there's a degree spec (actual length measurements change with different radii DS's, etc) but almost every car I've been under had some driveline slop too. To check the rear slop, I rotate the DS (or companion flange) and note how long it is till the rear wheels start to turn (with them in the air).