VALVE COVER GASKETS

or ROCKER BOX COVER GASKETS

– Silicone

for

LYCOMING Engines 

O-235, O-290,

O,IO, AIO, LIO,AEIO-320

O,IO,HO,HIO,LO,LIO,IVO,TO,LTO,AFIO-360

O,IO,AEIO,TIO-540

(See complete list below)

 

 –   Our silicone rubber gaskets are made from aerospace mechanical

      grade AMS  silicone and designed to withstand temperatures up

      to 400 degrees Fahrenheit.   

 –   Therefore, they will not break down and deform or crack up

      like cork or neoprene.   

 –   Our gaskets seal uneven and warped surfaces and 

      eliminate corrosion.

 –   Gaskets are 100% reusable.

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FAA-PMA APPROVED for the following engines:

 

Fits:  LYCOMING

O-235;   O-290;  

O-320;  IO-320;

AIO-320-B,-C;  

LIO-320-B,-C;  

AEIO-320-E1B,-E2B;

 

O-360;   IO-360;  

HO-360,-B1A,-B1B,-C1A;   HIO-360;  

LO-360;    LIO-360-B1G6;  

IVO-360-A1A;  

TO, LTO-360 76 Series;  

AEIO-360-B1B,  B1F,  B1G6,  B1H,  H1A, H1B;

 

O-540;   IO-540;  

AEIO-540-D Series;

TIO-540; -AF1A,-AF1B,-AG1A,-AK1A,-AA1AD,-AB1AD,

                -C1A,-E1A,-G1A,-H1A Series

 

Part #:     RG-75906-SP

Corresponding part #’s:  75906 and 06B26669

Price is per gasket.

Silicone gasket is 1/8″ thick.

Gasket has six bolt holes.

Reusable.

 

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INSTALLATION AND MAINTENANCE PROCEDURE

THE GASKET SURFACES MUST BE CLEAN AND DRY – remove all traces of oil.

 

1.      Remove the valve cover and gasket in accordance with the Lycoming procedure 

                or in accordance with an acceptable procedure used by the shop performing 

                the installation.

2.      Clean the valve cover and the cylinder surfaces of all residual material.

3.      Install P/N RG-75906-SP, DRY.

4.      Replace the valve cover and torque the cover bolts to 25 in-lbs.

5.      Check the cover bolt torque after an engine run-up  to take off power

                or first flight and re-torque the bolts to 20 in-lbs.

6.      Check the cover bolt torque annually, and re-torque to 20 in-lbs, if necessary. 

 

Be sure to follow the torque instructions on the label.

**CAUTION**   

DO NOT OVERTIGHTEN.    

It makes the gasket bulge or squeeze out.

 

Print Instructions – click on  Download Instructions

 

TO REUSE GASKET:   

1.    Wash gaskets briefly in hot water and soap.   
2.    Rinse well and dry thoroughly.   
3.    Re-install gaskets using the above installation instructions.   

 

Keep instructions for future reference.

 

PROUDLY MADE IN THE USA!

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