Service Manual

Stall Speed Test ISB, ISBe and QSB (Common Rail [...]
Page 5-40 Section 5 - Fuel System - Group 05
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11. The converter blading is
interfering or in a stage of
failure. Check the sump or
filter for particles.
12. The converter stators are
free-wheeling instead of
locking up.
13. The engine is set for power
other than that specified on
the power curve.
14. The converter is wrong due
to improper build or rebuild
of unit.
15. The converter is performing
to the published absorption
curve.
16. The engine and converter
match is correct. Check the
engine and converter
models for the proper
match.
17. The engine is matched to
too large of a converter. If
this condition is believed to
exist, please report the
engine-converter-accessory
information to the factory.
18. The engine power is down.
The engine torque rise
could be less than shown
on the standard engine
curve. See the fuel setting
adjustments and the
turbocharger air manifold
pressure check.
Yes No
1. The engine is high in
power.
2. The tachometer is in error.
3. The accessory power
requirements are less than
10 percent of the gross
engine power.
4. The converter oil is aerating
or foaming. Check for low
oil level, air leaks in suction
line, lack of foam inhibitor in
the oil, or suction screen or
filter. It would be
accompanied by a
noticeable loss of machine
performance.
5. The converter is being held
at full-stall. Check for
slipping front disconnect
clutch or a rotating output
shaft. On the converter-
transmission package, this
can be impossible to check.