What does an intake valve actuator on a cat do?
I also found this from 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. This is done to help lower NOX emissions.
What are fault codes for intake valve actuator?
Intake Valve Actuator Not Responding fault codes (285-07, 286-07, 287-07, 288-07, 289-07, 290-07) are occurring on some engines equipped with a new (’07) one piece design Low Pressure Actuator (LPA) versus the older two piece design Low Pressure Actuator (LPA).
What kind of intake valve does a caterpillar use?
Vocational, Technical or Tra… Heavy duty diesel truck engine. 2006 Peterbilt Mod 379 Caterpillar engine Mod C13 SN KCB35406 Check engine light is on. Reader shows- Inactive … read more
How are valve actuators used in an engine?
The Actuator is electronically controlled and hydraulically activated very similar to a Jake Brake. Your engine has 6 of them. One for each cylinder. The variable valve actuators are used in order to control the closing of the inlet valves.
How to troubleshoot cat fuel systems and test diesel?
– YouTube How To Troubleshoot Cat Fuel Systems and Test Diesel Engine Fuel Pressure. If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer.
How does a variable valve actuator work on a camshaft?
The variable valve actuators hold the inlet valves open. The valves would normally close with the profile of the camshaft lobe. The solenoid is energized while the inlet valves are open. The solenoid allows pressurized oil to fill the cylinder. The pressurized oil pushes down the piston.
Is there a parts Manual for a caterpillar?
Parts Manuals Dealer price and inventory are currently unavailable. You may still build an order and submit it to your dealer to complete your transaction, or try again later. Parts Manuals
Where is the No.1 piston on a cat MXS?
Put the No. 1 piston at the top center position on the compression stroke. Refer to Testing and Adjusting, “Finding Top Center Position for No. 1 Piston”. Loosen adjustment screw locknut (2) and back out adjustment screw (1) until actuator rod (4) is not in contact with intake rocker arm (3) .
How much torque does a cat MXs have?
Tighten bolt (5) and nuts (6) to a torque of 105 ± 20 N·m (77 ± 15 lb ft). Tighten nuts (4) to a torque of 47 ± 9 N·m (35 ± 7 lb ft). Install the O-ring seals in engine oil connector (1) . Apply Tooling (A) on the mounting surface of the variable valve actuator and the engine oil connector.
How to adjust unit injectors on Cat MXS?
Turn unit injector adjustment screw (2) clockwise until the correct height is obtained. Hold the adjustment screw in this position and tighten locknut (3) to a torque of 100 ± 10 N·m (74 ± 7 lb ft). To make an adjustment to the unit injectors on cylinders 1, 2, and 4, remove the timing bolt.