Measuring intake air pressure (boost pressure) PC200-8

Measuring intake air pressure (boost pressure) 1

Measuring tools for intake air pressure (boost pressure)

Stop the machine on a level ground and lower the work equipment to the ground.
Measure the intake air pressure under the following condition.

	Engine coolant temperature: Within Operating range. Hydraulic oil temperature: Within operat ing range.

1. Open the engine hood and remove intake air pressure pickup plug (1) from the intake air connector.

2. Install nipple [1] of boost gauge kit R and connect it to gauge [2].

3. Run the engine at middle or higher speed and bleed oil from the hose.

Insert the connecting parts of the gauge and hose about a half and open the selfseal on the hose side repeatedly, and the oil will be drained. a If Pm kit (A) is available, you use the airbleeding coupling (790-261-1130) in that kit.

If oil is left in the hose, the gauge does not work. Accordingly, be sure to drain the oil. 

4. Set the working mode in the power mode (P) and turn the swing lock switch ON.
If the swing lock switch is turned ON, the main relief valve is set for high-pressure
relief.

5. While running the engine at high idle, relieve the arm circuit and measure the intake air pressure.

6. After finishing measurement, remove the measuring tools and return the removed parts.