H2AD Question

Hey Guys.
maybe someone here could help me,
I just have bought a H2AD for my low-wing plane. So, I decided to buy a
fuel pump p/n LW-15399 from my part catalog Lyc_pc-122.pdf.
After buy it from spruce, I had a big suprise at installation time,
because I cant see nothing to move the arm of my fuel pump, I just see a
hole whithout the camshaft extension to move the fuel pump.
I cant see installation details in the catalog and I am worried about
it.
Any help will be very grateful.
Regards.
Helio

ps:
please see what I see in my O320-H2AD fuel pump location, and tell me
understand why that:
'http://www.ppxdf.com/h2ad/image_1.jpg'
(http://www.ppxdf.com/h2ad/image_1.jpg)
'http://www.ppxdf.com/h2ad/image_2.jpg'
(http://www.ppxdf.com/h2ad/image_2.jpg)
'http://www.ppxdf.com/h2ad/image_3.jpg'
(http://www.ppxdf.com/h2ad/image_3.jpg)
'http://www.ppxdf.com/h2ad/image_4.jpg'
(http://www.ppxdf.com/h2ad/image_4.jpg)
'http://www.ppxdf.com/h2ad/image_5.jpg'
(http://www.ppxdf.com/h2ad/image_5.jpg)
'http://www.ppxdf.com/h2ad/image_6.jpg'
(http://www.ppxdf.com/h2ad/image_6.jpg)


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PPXDF
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