TM 5-3805-280-24-2
Engine Tune-Up and Break-In
DYNAMOMETER TEST
100
4
4. Gradually increase load on engine until speed is
IMPORTANT: Dynamometers should be
reduced to rated speed rpm.
periodically checked for accuracy
and calibrated as necessary.
NOTE: Refer to appropriate machine technical manual
for average power ratings of specific
NOTE: High elevations may affect engine
applications. Allow 5% for minimum and
performance. (See EFFECTS OF ALTITUDE
AND TEMPERATURE ON ENGINE
maximum power.
PERFORMANCE, earlier in this group.)
5. Read horsepower on dynamometer and record
reading over a period of several minutes after
1. Connect engine to dynamometer using
engine stabilizes.
manufacturer's instructions.
6. Compare readings taken with power rating level for
2. Operate engine at one-half load until coolant and
your engine application, as listed in following
crankcase oil temperatures are up to normal
module.
operating range.
3. Run engine at fast idle.
RG,100,JW7644
1921NOV971/1
DYNAMOMETER TEST SPECIFICATIONS
Power ratings for various injection pump options are
provided for OEM applications on the charts that
follow. For Construction Equipment applications, refer
to SP458 Specifications Handbook. For North
American Agricultural applications, refer to DB1216
Specifications Handbook. If specifications are not listed
in handbooks, refer to factory DTAC for assistance.
Continued on next page
RG,100,JW7641
1921NOV971/4
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