EURO II mechanical traditional diesel fuel injection pump test bench 12PSB is employed high performance/low noise inverter and using Bosch advanced techniques Our testbench has had more and more advantages, such as, wide range of adjustment speed, stable speed, large torque outputting, easy operating and so on. This test bench used digital indicators to display speed, counting, test oil temperature, pressure/vacuum and advance angles.
The test bench of 12PSB series in it’s 12 cylinders with 5.5/7.5/11/15/18.5/22kw motor, can start and test both in-line and rotary fuel injection pumps, for example, Ⅰ, Ⅱ, Ⅲ, A, B, P, Z, VE pumps and so on, by employing the suitable accessories.

MAINTENANCE
The recommended periods to accomplish the routine maintenance for the testing system, to be operated in optimal conditions, are presented in the following.
1. Routine maintenance
Before starting-up the system, ensure solving any occurred problems and control whether or not the following requirements are accomplished:
• The power cable has undamaged isolation;
• The connection to the protective earthling system is undamaged;
• The power cords and communication cables are correctly connected to the testing system and are secured against accidental disconnection;
• The test fluid level in the tank is optimal (2, figure 3.5). When additional test fluid is required, the same class of test fluid should always be used;
• There are no test fluid leakages;
• All access panels and doors are fitted and locked.

2. 20 Hours Drive Running Maintenance
Accomplish the operations presented in chapter 12.1 and the calibration of the RC-ST4x testing system.

3. 100 Hours Drive Running Maintenance
Accomplish the operations presented in chapter 12.2 and check the injectors for the fuel injection pumps testing as well as the test pressure lines.
Use an injector tester (e.g. PG -40) to test and regulate each injector. The injector must be set to an opening pressure of 175+2 bars. In the same time the quality of the spraying process is evaluated.
Finally check the test fluid deliveries scatter between injectors, which must be of maximum
0.5 mm3/stroke. Replace the inadequate injectors with others of the same type.
The test pressure lines with distorted sealing cones or holes must be replaced with similar ones.

4. 200 Hours Drive Running Maintenance
Accomplish the operations presented in chapter 12.3, and then change the test fluid and the filters.
To accomplish these operations, open the bolts (1, figure 3.4) mounted on the big access doors.
Remove the filters, clean the sealing surfaces and fit new filters of the same type (or technically equivalent).
 After replacing the test fluid and the filters, clean up immediately all spillages of test fluid in the test area.
At this moment, check and regulate the manometers mounted on the test bench, if needed. When manometers’ indications are not in accordance with the accuracy class, the               manometers will be replaced with new ones of the same class.
Perform a detailed checking of the power supply.