Engine Test

Connection Diagram - Engine 606.912 IFI





Figure 1
052 Tester
30 Injector

A Spray pattern: frayed (poor)
B Spray pattern: closed (good)
a Valve
b Hand lever

Test Steps
1. Injector (30)
Connect to tester (052), close valve "a", vigorously pump 5 times

2. Buzzing test
Slowly actuate hand lever "b" approx. 1 stroke per second.

3. Spray pattern test
With rapid short strokes, approx. 2 strokes per second, the spray pattern should be closed and should break off well.
A- Spray pattern frayed "poor"
B- Spray pattern closed "good"

Pre-spray
Check (only with hole-type pintle injector)

Shut-off pressure or opening pressure
Check by opening valve "a" and slowly operating hand lever "b" at least 1 stroke per second.

Nominal value: 115 - 125 bar with new injectors,
110 bar minimum with used injectors.

NOTE: Use only clean test oil or filtered diesel fuel for testing. Under no circumstances should the hand be brought into contact with the spray of an injector. The spray penetrates deeply and destroys the skin tissue. The fuel entering the blood stream may cause blood poisoning.