LAUNCH CNC-603A Injector Cleaner & Tester User Manual
5
IV. Operation Procedures for Cleaning and Testing of Injectors
4.1 Preparations
1
）
Remove the injector from the vehicle and check if the rubber seal of the injector is damaged. If it is damaged,
replace it with a seal of the same type before cleaning and testing to avoid leak. Put the injector into gasoline or
detergent, carefully remove the greasy dirt outside and then wipe it with a soft cloth.
2
）
Check and add test solution. Open the lid of fuel filling port and fill 2000ml of test solution into the fuel filling
port (pay attention to the control of the filling speed to prevent the test solution from overflowing from the fuel
filling port), as shown in Figure 4.1.
3
）
Turn on the power switch on the right side of the main unit, enter the main interface and press [Drain] button
to drain fuel.
4
）
Repeat Step 2 and 3, observe the level of the fuel pipe on the left side, pay attention to the filled test solution
shall not exceed the red line.
5
）
Add an appropriate amount of cleaning agent into the ultrasonic cleaning tank to immerse the needle valve of
the injector.
6
）
Put the injector into ultrasonic cleaning tank (with the end connecting the line facing up and the pointed end
facing down.
Attention: The main unit of the device uses test solution for uniformity / sprayability test, leakage test,
injecting flow test and auto. test. The ultrasonic cleaner uses the cleaning agent. Test solution and
cleaning agent are not included in the standard configuration and can be purchased separately.
Figure 4.1
