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 427 of 736
TM 9-2815-225-34&P
0047 00
0047 00-3
ENGINE TESTING (Contd)
Figure 1. Engine Installation on Dynamometer Test Stand.
FINAL ACCEPTANCE TEST
1.
Start engine (4) and operate at idle for 5 minutes. Check for low oil pressure, high coolant
temperature, leaks, and unusual noises. No fuel leaks are allowed. Only Class I oil leaks are
allowed as described below.
CLASS I— Seepage of fluid (as indicated by wetness or discoloration) not great enough to form
drops.
CLASS II— Leakage of fluid great enough to form drops, but not enough to cause drops to drip
from item being checked/inspected.
CLASS III—Leakage of fluid great enough to form drops that fall from the item being
checked/inspected.
2.
Stop engine (4) after 5 minutes of operation. Allow engine (4) to stand for 2 minutes while
checking for leaks and unusual conditions.
CAUTION
Except in emergency, do not stop engine immediately after
completion of power/torque runs. Sudden stopping without cool-
down may cause damage to engine components. Cool-down
period is 5 minutes (minimum) after any power/torque run.
3.
Start engine (4), test, and record results.
4.
Prior to removal of engine (4) from dynamometer test stand, whether accepted or rejected, an oil
sample must be taken as specified in AR 750-22.
5.
After completion of test, disconnect engine (4) and remove from dynamometer test stand.
3
2
4
1
BLOW-BY
MEASURING
TOOL
DYNAMOMETER
TEST STAND
ORIFICE
ADAPTER
PRESSURE
RELIEF VALVE
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