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Old 01-14-2011, 12:13 PM   #1
CBpdx
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Join Date: Feb 2009
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Location: Portland, OR
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2002 Outback Sport

Default Torque for install of OBS A/C tension bracket

(Sorry, maybe this should be in "Service & Maintenance" - Mods, feel free to move)

I was getting some squealing so decided to replace my PS/Alt belt and the A/C belt while I was at it. (I'm a newbie when it comes to working on cars so bear with me...)

A number of bolts and nuts were rusted bad and the A/C pulley had a lot of play so I decided to replace that. I pulled the whole bracket, bought a new pulley, tensioner bolt and belt.

I am now about to reinstall the bracket but cannot find any torque specs. I am scared about stripping out the threads and screwing myself. Can anybody provide some specs for torque for installing the 2 bolts that hold the bracket onto the engine block? Also, should I use loctite on these bolts? (And how about loctite on the locknut? Doesn't seem like there is a lot of threads being grabbed there on something that will have so much vibration)

Thanks!
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Old 01-14-2011, 02:38 PM   #2
BAN SUVS
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As a general rule, you can use the size of the bolt to take a good guess at how much torque. On most 12mm bolts, just a solid twist using a standard 3/8" drive ratchet is plenty. Call it 40-55 pounds. The only time I pay close attention to actual torque values is when it involves a bearing or a lugnut.
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Old 01-14-2011, 03:19 PM   #3
CBpdx
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Thanks BAN, I just was getting paranoid.

How about testing your torque wrench? Is there a way to test if it is accurate? I'm always worried it is off and I'm going to kill something. I should probably just buy a better torque wrench. I'm still using a cheapy from Harbor Freight (I know, I know...)
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Old 01-14-2011, 03:45 PM   #4
renyo
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I think you're talking about the idler pulley bracket. If so, for the 97 2.2L at least, it's 17 lb-ft. I doubt there's a difference between the piece for the 2.2 and the 2.5.
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Old 01-14-2011, 05:34 PM   #5
CBpdx
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Yes renyo, it is the idler pulley bracket. Just finished putting it back on and got the belts on. Left the covers off for now so I can check the tension after driving a bit. I'll double check the bracket mounting bolts.

Thanks.
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Old 01-14-2011, 06:25 PM   #6
renyo
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The torque spec on that I don't imagine is that important anyway. As long as you hit it somewhere between not falling off and snapping the head off the bolt you're good.
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Old 01-14-2011, 07:03 PM   #7
BAN SUVS
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Quote:
Originally Posted by renyo View Post
The torque spec on that I don't imagine is that important anyway. As long as you hit it somewhere between not falling off and snapping the head off the bolt you're good.
Exactly. Use a regular ratchet, put some pressure into it but don't haul off on it like it's holding the Earth in orbit.
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Old 01-14-2011, 08:31 PM   #8
CBpdx
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Cool, thanks all.

I was just worried that a seemingly simple job that I could rack up as a success could turn really ugly if I stripped something out. Snugged it up, then were both were in and everything else was lined up gave it another little crank. Never dropped my body weight on it or anything like that.

No more squeak from the belts, A/C sounds like it is running smooth, and got rid of some rusty ass nuts and bolts in the process.

Thanks again for the help and info! I appreciate it.
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