Leaking diaphragm... AGAIN.

[Evotrucker]

So i was digging around on quickserve and getting familiarized with the IFSM a better.

I've found two thing that ive got question about.

1. temperature sensor behind the dampener or under it. Could this lil bugger be the cause of my " over heating issue" like some times after a good hard pull up a decent hill. the in dash gauge will tell me its HOT! but when i pull over shortly after and give it 15-20 minutes to cool down. and reset the truck on and off, it guage shows normal readings. Would this sensor have anything to do with in dash gauge of the truck, this is for a vnl670 volvo.

2. I noticed there is a filter that might or might not be in the IFSM. I have never noticed it before because its hidden inside the pump.... could this be the reason why my gear pump and lift pump went out prematurely?. quick serve says its a 300 micron filter. I wish i knew about it earlier other wise i would replaced it anyways when i replaced the dampeners a while back.

thanks again guys!

also ive attached pictures for frame of reference and a pdf file on it.
Engine serial number 79139585.