Torquing A/C Hold down bolts

[FlyStar]

My manual says that these bolts should be torqued annually and that the gasket is a “wear part” and will need replacement “sometime”.

Does anybody really do this? Is it an important annual maintenance item? I do have a rare inch-pound torque wrench and plan to do it. But I’ve not heard anyone mention it ever.


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[FT4NOW]

I'd be willing to bet most people dont do it. It should be done, if it gets loose, it's a good entry point for water to get under the membrane and rot the roof.

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[Redapple63]

When I put my rv airflow in on the main ac all bolts were loose, I could spin them with my finger. It was a year old when I put it in.

Bill

[Jerryr]

When I put my rv airflow in on the main ac all bolts were loose, I could spin them with my finger. It was a year old when I put it in.

Bill

Same here. I bought this torque wrench https://www.amazon.com/gp/product/B01LX4ND65/ and torqued the bolts. Rv Airflow said to torque to 40 in-lbs. I stopped at 30 in-lbs.

[Redapple63]

Same here. I bought this torque wrench https://www.amazon.com/gp/product/B01LX4ND65/ and torqued the bolts. Rv Airflow said to torque to 40 in-lbs. I stopped at 30 in-lbs.

Nice wrench! I stopped before I hit 40 as well seemed too tight for me.

[FlyStar]

Thank you all for the info. I’ll be torquing them down on my next maintenance visit.


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[Jims94vmx]

Nice find. Will have to get one.

[Hoopy Frood]

Wow, 30 in.lbs., that's barely past snug, or finger tight. I take it doesn't screw into anything really solid?

[Redapple63]

Wow, 30 in.lbs., that's barely past snug, or finger tight. I take it doesn't screw into anything really solid?

Yea. Supposed to be 40 which is like 2.5 ish foot pounds.

I went to 30 in lbs.

It is a sandwich, metal frame on the inside to the ac frame on the roof.

Bill

[USA in a Chevrolet]

Wow, 30 in.lbs., that's barely past snug, or finger tight. I take it doesn't screw into anything really solid?

I believe the reason for only 30 in torque is to avoid over compressing the foam gasket between roof & AC unit.