IR Type 30 Model 242 Head Bolt Torque

by Joe
(Milwaukee WI)

I am replacing the head gaskets & finger valves on an IR type 30, model 242.


In looking for head bolt torque specs online I am coming up with conflicting answers.

The most common answer is 75 foot pounds.

My unit has 1/2-13 bolts on one head and 3/8-16 on the other.

My experience (all automotive, minimal other equipment repair) would be that the 75 foot pounds would work on the 1/2-13 but be a disaster on the 3/8-16 bolts.

The IR Technical Publication site seems to only have information for other type 30 models, not the 242. In looking at those manuals, they are close in design but do show enough difference (valves, etc.) to make me not trust the specs.

Any insight is appreciated.

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There is now a bolt torque guide linked from the site map page under troubleshooting.

B.

Comments for IR Type 30 Model 242 Head Bolt Torque

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Nov 10, 2016
Head Bolt torque T30 242
by: Bill

Thanks for this, Glenn.

Nov 09, 2016
Head Bolt torque T30 242
by: Glenn

IR put out a service note saying: HP head torque to 35lbs, and highly recommending retorque at 15 min running and again at 30mins.

I obtained a partial copy of the service note from a local compressor shop.

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I have a Ingersol Rand Two Stage compressor and would like to add and air dyer. It is model 30T puts out 24.3 cfm at 90psi. My question is what size dryer would I need, want to use refrigerated dryer.
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_______________________
Bill says...

Richard, you size the dryer for the maximum air flow possible from your compressor. If you size the dryer too small, when the compressor is running at full discharge, you may overwhelm the dryer and not get the full benefit.

On the site map page, look for the section on Dryers, and follow the link to refrigerant dryers for more info. Any more questions, add a comment here.

Cheers,

Bill

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