TM-9-2815-225-34-P

ENGINE, DIESEL: 6 CYLINDER IN-LINE TURBOCHARGED, CUMMINS MODEL NTC-400

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

JULY 2005

TM-9-2815-225-34-P - Page 399 of 736

TM 9-2815-225-34&P

0044 00

0044 00-5

FUEL PUMP TESTING AND CALIBRATION (Contd)

CHECKING AND ADJUSTING ENGINE FUEL

1.

Connect fuel pump (10) to fuel rate meter (2).

2.

Bring engine (3) to full throttle and increase dynamometer load until engine rpm falls to rated

speed.

3.

Check governor speed cut-off while load is on engine (3).

4.

Check fuel rail pressure gauge (4) at maximum speed.

5.

Hold engine speed and load at maximum speed long enough for fuel rate meter (2) to stabilize.

NOTE

The fuel rate specified on fuel pump calibration specification is

at full throttle and rated speed. An engine or chassis

dynamometer must be used. Accurate fuel rail pressure and

speed readings must also be taken.

6.

Verify correct fuel rate measurement with fuel rate meter (2).

Figure 2. Fuel Adjustment.

1

2

3

4

5

11

12

10

9

8

7

6

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