Paccar MX-11, Operator'S Manual, Page: 84 / 121

2. Operate the priming pump by
moving the knob in and out for 150
seconds. During this time the
pumping resistance will increase,
indicating air is being bled from the
system, but the full time is required
to fully prime the fuel system.
CAUTION
Operate priming pump at a maximum
rate of 30 strokes per minute to pre-
vent damage to pump.
3. Check for leakage at the fuel filter
cap. Tighten if necessary.
WARNING
Check the fuel filter for signs of leak-
age. DO NOT smoke or allow an open
flame in close proximity. Failure to do
so could ignite a fire or cause an ex-
plosion which could result in serious
injury to you and/or bystanders. Fail-
ure to comply may result in death, per-
sonal injury, equipment or property
damage.
4. Start the engine and allow it to idle
for 2 to 3 minutes. Note that it
could take up to 15 seconds of
cranking for the engine to start. If
the starter is engaged for longer
than 20 seconds without starting,
additional priming pump actuation
may be necessary.
CAUTION
If the engine is cranked excessively
Starter Protection will be triggered and
starter engagement will be restricted
for 10 minutes.
5. Check the system for leakage while
idling. Then turn the engine OFF
and check the system again for
leakage.
6. If the engine does not start within
this time, repeat steps two and
three until the engine starts. If the
engine still does not start, allow the
starter to cool down for at least 5
minutes before repeating the
procedure.
WARNING
DO NOT loosen any fuel line fittings in
order to bleed the fuel system of air.
The system is under high pressure
which, when relieved, could cause
death, personal injury, equipment or
property damage.
Fuel Filter Water Draining
Procedure
Wear fuel-safe gloves. Have a one liter or
larger jar or can available, and a place to
responsibly dispose of contaminated water.
Follow the steps below to drain water from
your primary fuel filter housing.
1. Locate the drain spigot on the
bottom of the filter housing. The
spigot is a quarter-turn valve, no
tools are required to open it.
2. Place a can, or preferably, a
transparent jar, below the drain to
catch the fuel/water mix that will
come out.
3. While watching the drain, open the
spigot allowing any water that may
be in the filter housing to come out.
If water is present, it should exit the
housing before any fuel.
4. When no more water comes out,
close the drain.
5. Discard of the waste fuel/water
appropriately.
ENGINE MAINTENANCE - Maintenance Procedures
82 Y53-1166-1M1 (10/2020)
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