Engine Tune-Up and Break-In
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
PERFORMANCE, earlier in this group.)
reading over a period of several minutes after
1. Connect engine to dynamometer using
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
3. Run engine at fast idle.
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.
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