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Wayne
Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 8428
Experience:  worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
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I have volvo D13 2010. I think I have a problem with the air

Customer Question

Hi i have volvo D13 2010. I think I have a problem with the air compresor. It makes noises and the pressure goes up to about 140 psi.
Submitted: 10 months ago.
Category: Medium and Heavy Trucks
Expert:  Wayne replied 10 months ago.

Hi I'm Wayne

I will help you with this

That is the governor failing, , letting it go up too high

the noise may be the relief valve you are hearing,

I suggest to replace the governor

I hope this helped you

Hi if this helped you

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Wayne

Customer: replied 10 months ago.
I replaced the governor and it still makes unusual noises.
Expert:  Wayne replied 10 months ago.

Morning

Thank you for that

so is your pressure correct now

when is this noise coming on, all the time

does it sound like a knocking sound

let me know

Customer: replied 10 months ago.
it makes a knocking sound only when the air compressor is working and reaches about 140 psi.
Expert:  Wayne replied 10 months ago.

Hi

OK that is unloader valve in the head

you can get a rebuild kit for the head

or replace the compressor, kits are around $75.00

if you go with a kit bring all info from compressor

Hi if this helped you

Please rate my answer 3 or more stars

If you need more info, use request button

Not Poor/Bad service

Wayne

Expert:  Wayne replied 10 months ago.

Hi

Just following up wit you

did my answer help you

let me know , Please

Wayne