Perkins 1706J-E93TA Operation And Maintenance Manual page 110

110
Maintenance Section
Engine Storage Procedure - Check
Illustration 92
Calibration point for distilled water
1. Follow the instructions included with the
refractometer to calibrate the waterline of the
meter.
2. Clean the refractometer and apply two drops of
Diesel Exhaust Fluid (DEF) collected from the
DEF tank.
Illustration 93
Typical reading for DEF in good condition
3. Read the DEF quality in the refractometer. The
DEF quality must measure between 29 and 35
percent. If the DEF does not meet specification,
replace the DEF in the tank with new DEF. The
new DEF must meet ISO 22241 standards.
Note: Dispose of the DEF removed as per local
regulations.
DEF Stability
DEF fluid is stable when stored and handled properly.
The quality of DEF rapidly degrades when stored at
high temperatures. The ideal storage temperature for
DEF is between −9° C (15.8° F) and 25° C (77° F).
DEF that is stored above 35° C (95° F) for longer
than 1 month must be tested before use. Testing
should evaluate Urea Percentage, Alkalinity as NH
and Biuret content.
The length of storage of DEF is listed in the following
table:
Table 21
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Storage Temperature
Below 25° C (77° F)
25° C (77° F) to 30° C (86° F)
30° C (86° F) to 35° C (95° F)
Above 35° C (95° F)
Refer to "ISO 22241" document series for more
information about DEF quality control.
Note: Dispose of all fluids according to applicable
regulations and mandates.
Initial Operation after Storage
The quality of oil control components used in Perkins
Engines ensures that only an operational check at
initial start is necessary before operation.
The purpose of this operational check is to ensure
that the correct pressures and temperatures are kept
in the lubrication, cooling, and fuel systems. Also, the
operation ensures that any leaks are corrected.
To ensure a safe, uniform check at initial start, use
the following procedure:
1. Turn the engine at cranking speed with the throttle
in FUEL OFF position until engine oil pressure is
present.
2. Operate the engine for 10 minutes at low idle rated
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speed.
3. Operate the engine for 15 minutes at half rated
load and 3/4 rated speed.
4. Operate the engine for 30 minutes at full rated load
and full rated speed.
M0087475-03
3
Expected DEF Life
18 months
12 months
6 months
test quality before use