How to delete VVA Iva on cat engine?
List of CAT ECM tunes All our tunes for VVA delete on CAT engines come with fleet safe power upgrade that will provide You best fuel economy. Work that needs to be done: You have to back off VVA adjusters ALL THE WAY OFF. Turn the nut counter clockwise (get the nut away from base).
How to back off VVA adjusters on cat engine?
Work that needs to be done: You have to back off VVA adjusters ALL THE WAY OFF. Turn the nut counter clockwise (get the nut away from base). Check the photo below, finger is pointing to one of the VVA adjusters – You need to back all of them OFF.
How to remove and install an IVA or VVA solenoid?
How To Remove and Install An IVA or VVA Solenoid. Cat C11, C13, and C15. – YouTube How To Remove and Install An IVA or VVA Solenoid. Cat C11, C13, and C15. If playback doesn’t begin shortly, try restarting your device.
What does the IVA do on a C15?
The IVA does not have enough power to overcome the initial seat pressure of the valve springs. It does however have enough staying power to hold the valve open during the start of the compression stroke letting some of the intake charge to flow back into the intake and “pre heat” it for better combustion.
What is the intake valve actuator on ACERT cat?
An Intake Valve Actuator or IVA (also known as a Varible Valve Actuator or VVA) is a device that contacts the intake rocker arm and holds the intake valve of an ACERT Cat engine open in an effort to lower the cylinder temperatures of the engine.
What’s the problem with actuator valve on C15?
The main big problem with the actuators is they break studs. Then they bang on the top of the head and scar it. In worst cases they can ruin the head. But you will be able to hear it first usually. It will run rough and miss. About the only thing preventive you can do is check with CAT and see if the updated studs have been installed.
What are the problems with the ACERT engine?
The whole ACERT engine is based off a modified Miller cycle combustion process (a different but similar 4 cycle engine process). Many of the associated problems with the IVA come from brittle wires, bad connections, dirty oil, and improper oil weight.