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M0076814-03
(Table 17, contd)
30° C (86° F)
35° C (95° F)
(1)
(1)
At 35° C, significant degradation can occur. Check every batch
before use.
Additional Information
The volatile vapors are removed by running the
engine to operating temperature. A mineral oil base
is left behind after the volatile vapors are removed.
The oil should then be drained, and new oil and filters
installed.
Engine Valve Lash - Check
Ensure that the engine cannot be started while
this maintenance is being performed. To help pre-
vent possible injury, do not use the starting motor
to turn the flywheel.
Hot engine components can cause burns. Allow
additional time for the engine to cool before
measuring/adjusting valve lash clearance.
NOTICE
Only qualified service personel should perform this
maintenance. Refer to the Service Manual or your au-
thorized Perkins dealer or your Perkins distributor for
the complete valve lash adjustment procedure.
Operation of Perkins engines with incorrect valve
lash can reduce engine efficiency, and also reduce
engine component life.
The initial valve lash adjustment on new engines,
rebuilt engines, or remanufactured engines is
recommended only on engine ratings 432 kW
(580 hp) and greater. The adjustment is necessary
due to the initial wear of the valve train components
and to the seating of the valve train components.
This maintenance is recommended as part of a
lubrication and preventive maintenance schedule to
help provide maximum engine life. For engine ratings
less than 432 kW (580 hp), the initial valve lash
adjustment is not necessary.
Note: All engine ratings must have the engine valve
lash performed at 2500 hours.
Ensure that the engine is stopped before measuring
the valve lash. To obtain an accurate measurement,
allow the valves to cool before this maintenance is
performed.
12 months
6 months
i07192202
During valve adjustment, visibly inspect the valve
train of wear or damage.
Refer to Systems Operation, Testing and Adjusting,
"Engine Valve Lash - Inspect/Adjust" for more
information.
Fuel System - Prime
NOTICE
Do not allow dirt to enter the fuel system. Thoroughly
clean the area around a fuel system component that
will be disconnected. Fit a suitable cover over any
disconnected fuel system components.
Illustration 90
(1) Fuel priming pump
(2) Fuel priming switch
1. The fuel system can be primed from the keyswitch
or from a remote mounted switch (2).
2. Turn the fuel priming switch (2) to the ON position.
Hold the fuel priming switch in the ON position for
2 minutes. If the fuel system is being primed from
empty, then turn the switch off and then on again
for 2 minutes.
3. After 2 minutes the fuel system should be primed
and the engine ready to start.
4. Start the engine, refer to this Operation and
Maintenance Manual, Starting the Engine or refer
to the OEM for instructions on starting the engine.
103
Maintenance Section
Engine Valve Lash - Check
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