Technical data

18
Repair instructions
Exhaust temperature,
checking
Special tools: 885151
TAMD61, -62, -71 and TAMD72WJ-A: 884970
TAMD61, -62, -71 late model, TAMD63, -72P-A:
885164
Exhaust temperature reflects the thermal loading of
the engine. The temperature of the exhaust, relative to
the highest permitted exhaust temperature, gives a
measure of how well combustion in the engine
functions at the loading in question.
If the permitted exhaust temperature is exceeded, the
thermal loading of the engine increases, bringing a
risk of engine failure (or shortened service life) of the
pistons and valve system in the first instance.
Using exhaust temperature measurement, you can
easily check that the engines in a twin installation are
working at the same loading.
Note that the engines might well be running at the
same speed but have different thermal loadings.
1
Remove the exhaust pipe from the turbocharger
exhaust outlet.
2
Does not apply to TAMD61, -62, -71 late model and
TAMD63, -72P-A
Remove the studs.
3
Clean the mating surfaces.
4
Does not apply to TAMD61, -62, -71 late model and
TAMD63, -72P-A
Install the longer studs included in the flange kit.
Connection of measurement flange to TAMD61, -62, -
71 -72WJ-A, early model
Connection of measurement flange to TAMD61, -62, -
71 -72WJ-A, late model and TAMD63, -72P-A
Does not apply to TAMD61, -62, -71 late model and
TAMD63, -72P-A
Install the measurement flange (1) on the turbine
housing, using gaskets on both sides. Install the
exhaust pipe.
Applies to TAMD61, -62, -71, -72WJ-A late model
and TAMD63, -72P-A
Install the centre flange (1) with a V-clamp on the
turbine housing flange.
Install the exhaust pipe on the measurement flange
with a V-clamp.
5
Connect the pyrometer sensor to the outlet* provided
on the measurement flange.
* Measurement flange 884970 must be supplemented by a hole for
the pyrometer sensor.
Please refer to the instruction in Service Bulletin 18-4 No. 15
6
Run the engine(s) at full load for about a minute at the
engine speed specified for each engine variant in the
Workshop manual.
“Technical Data” on pages 19 and 20.
7
Measure the exhaust temperature and check that the
temperature agrees with the values specified in the
Workshop manual, “Technical Data” on pages 19 and
20.