Paccar PX-7, Operator'S Manual

Page: 36 / 92

CAUTION
Due to thermal expansion the coolant
level CANNOT be checked if the cool-
ant is above ambient temperature or
the engine has not completely cooled.
The coolant level indicated on a
warmed system will be inaccurate and
can lead to low coolant conditions dur-
ing cold-starts.
3. Check coolant level. It should be
visible through the clear plastic
surge tank.
4. Add coolant as necessary until
proper level is reached.
NOTE
The pressure cap (on the side of the
surge tank) should NEVER be re-
moved. The fill cap (On the top, not
the side of the surge tank) is the cor-
rect fill point.
Aftertreatment Exhaust Piping
This procedure should be followed as part
of daily and refueling maintenance checks.
1. Inspect for cracks.
2. Inspect for clearance to other
components (i.e. electrical
harnesses, etc.).
3. Inspect hose/pipe condition –
deterioration/signs of leaking.
Air Intake Piping
This procedure should be followed as part
of daily and refueling maintenance checks.
1. Inspect hose/pipe condition –
deterioration/signs of leaking.
2. Inspect hose clamps for tightness
and pinching/cutting of hoses.
3. Inspect clearance to other
components.
4. Check air restriction gauge.
How to Drain Moisture from Air
Tank
1. Locate the various air tanks on the
vehicle
2. On the air tank, look for a valve,
typically on the bottom of the tank.
3. To eject moisture from the air
system tanks, pull the line that is
connected to the moisture ejection
valve.
4. Continue pulling until the air comes
out free of water.
Diesel Exhaust Fluid
This procedure should be followed as part
of daily and refueling maintenance checks.
1. Check level of diesel exhaust fluid.
NOTE
It is recommended to top up DEF
when refueling. See Engine Aftertreat-
ment Systems Operator’s Manual for
DEF information.
ENGINE MAINTENANCE - Maintenance Requirements
34 Y53-1183-1G1 (05/19)
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