Table 3-7. Dynamometer Test Chart

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Perform break-in and test procedures.

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TM-9-2815-226-34-2 Engine Diesel 6 Cylinder Inline Turbocharged Cummins NTC-400 BC2 Manual

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Table 3-8. Oil Pressure Specifications

TM 9-2815-226-34-2

(4)

At each phase:

Table 3-7. Dynamometer Test Chart

Rated

Air

Rating

Crankcase

Phase 1

Phase 2

Phase 3

Phase 4

Power Check

Torque

HP@RPM Fuel

Manifold

Pressure

To Temp

15 Min.

5 Min.

Ft/Lb

HP@

500

Rate

Pressure

Altitude

With

HP@

Sea

500 Ft

Engine RPM

Ft-Alt

LB/HR

IN/HG

Maximum

Turbo

RPM

Level

Alt.

FT.

IN/H2 O

NTC-

400@ 400@

158

41/49

12,000

200@

300@

340@

360@

380@

1000

400

2100 2100

1575

2100

BC2

NOTE

NTC400BC2 engine does not require fuel deaerating below altitude shown in column entitled

"Rating Altitude Maximum." Above maximum altitude, deaerate at each 1,000 ft (304.8 m)

additional altitude by 4 percent. Crankcase pressure is given in inches of water. Percent of HP

@ RPM ratings for break-in phases are established as follows

Phase 1 - 50%

HP @ 75% RPM

Phase 2 - 75%

HP @ 100% RPM

Phase 3 - 85%

HP @ 100l RPM

Phase 4 - 90%

HP @ 100% RPM

Power Check -

96% HP @ 100% RPM

TA295595

(a)

Apply dynamometer load to +10% horsepower at +5% speed as shown.

NOTE

Crankcase pressure (blow-by) manometer readings not exceeding 0.30 in.

(7.62 mm H2O) surge are normal.

(b)

Make frequent checks of crankcase pressure (blow-by) at any given stabilized speed. If pressure surge

exceeds 0.30 in H O (7.62 mm H2 O), reduce speed for 30 to 45 minutes, and then accelerate back to

original setting.

(c)

If blow-by continues to drop at any given speed, cut run-in time in half; otherwise, run engine for specified

time period.

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