OM-129 647 Page 42
SECTION 9 − RUN-IN PROCEDURE
run_in1 6/96
9-1. Wetstacking
1 Welding Generator
Run diesel engines near rated
output during run-in period to prop-
erly seat piston rings and prevent
wetstacking. See nameplate or
rating label to find rated output.
. Do not idle engine longer than
necessary. Piston rings seat
faster if engine runs at weld/
power rpm, and the welding
generator is kept loaded dur-
ing run-in.
2 Engine Exhaust Pipe
Wetstacking is unburned fuel and
oil in the exhaust pipe and occurs
during run-in if the engine is run too
long at light load or idle rpm.
If exhaust pipe is coated with a
wet, black, tar-like substance, dry
the engine using one of the follow-
ing run-in procedures.
See the engine manual for addi-
tional engine run-in information.
1
2
