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I have an a 2004 mack cv 713 granite that will not built air…

Customer Question
I have an a...

I have an a 2004 mack cv 713 granite that will not built air pressure, has a new air compressor, drier, and govenor

Mechanic's Assistant: What's the make/model/year of your truck? Engine type?

2004 Mack CV713 Granite

Mechanic's Assistant: Are you fixing your truck yourself? What have you tried so far?

Yes i am, i have put on new air compressor, drier and govenor

Submitted: 2 months ago.Category: Medium and Heavy Trucks
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Customer reply replied 2 months ago
did you receive my question
Answered in 5 hours by:
7/25/2022
Technician: Ramon Capellan, owner / operator replied 2 months ago
Ramon Capellan
Ramon Capellan, owner / operator
Category: Medium and Heavy Trucks
Satisfied Customers: 91
Experience: Expert
Verified
Hello and welcome to JustAnswer sorry you are having issues with your Mack CV713.My name is***** and I am here to assist you.

Can you take the center airline off the governor and check if you have air coming from the center port on the governor? Will it build air at higher rpm?

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Customer reply replied 2 months ago
it will build air at a higher rpm
Technician: Ramon Capellan, owner / operator replied 2 months ago

Ok so I think I know the issue

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Customer reply replied 2 months ago
OkWhat do you think
Technician: Ramon Capellan, owner / operator replied 2 months ago

To set this up properly there will be a line coming from the wet tank that should plug into your reservoir port. All other reservoir ports should be plugged Click on the blue letters and this will make more sense Then on your unloader port one line should go to the unloader port on the compressor ( in the compressor head) to open the unloader valve to shut off the compressor, the other line will go to the air dryer to signal it to purge when system pressure is reached. The 3rd unloader port should be plugged on the governor. The exhaust port should be open to atmosphere , no lines going anywhere into it

https://f01.justanswer.com/dieselB19/af6556a8-c43c-4daa-8388-0b8cd940a7d1_HALDEX_D-2_Governor.jpg

See if you can open the diagram.

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Customer reply replied 2 months ago
Thank u I will try this
Technician: Ramon Capellan, owner / operator replied 2 months ago

Ok fingers crossed let me know in the Am.Best of luck to you.

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Ramon Capellan
Ramon Capellan
Ramon Capellan, owner / operator
Category: Medium and Heavy Trucks
Satisfied Customers: 91
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