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I am replacing struts on my 2004 Toyota Camry LE (4 cyl). The rear suspension strut-to-axle carrier nuts/bolts (19mm) have a torque spec of 188 ft. lbs. in an official 2004 Camry Repair online manual.

I also have a Haynes Repair Manual for the same car. It specifies the following:

New nut: 188 ft. lbs.
Used nut: 145 ft. lbs.

Why would it specify a lower spec for a used nut? It doesn't make the same distinction when specifying the torque for the same, but larger (22mm) bolts/nuts on the front suspension. For the front, it simply says 155 ft. lbs.

1 Answer 1

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Because the new nut has a “self locking” design which needs extra torque to deliver the same force to the fixing, while the old nut does not have that any more.

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  • I wrote the publisher of the Haynes manual, not expecting a quick reply, and to my surprise a technician answered right away. The 2001 factory service manual does specify a different used nut torque, apparently for the reason you give. But 2002-2005 (the models my manual covers) does not have this distinction. Therefore, it is a misprint in the Haynes manual.
    – Stress
    Commented Nov 26, 2017 at 15:00
  • Well done and best of luck with finishing the work.
    – Solar Mike
    Commented Nov 26, 2017 at 15:05

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