Coolant Sampling - PREVOST H3-41 Maintenance Manual

FIGURE 17: LOCATION OF HEATER LINE SHUT-OFF VALVES IN ENGINE COMPARTMENT (H3 SERIES)
6.5

COOLANT SAMPLING

NOTE
The following procedure is provided for
reference only.
Instructions coming with the laboratory test kit
take precedence over this procedure.
WARNING
Before proceeding with the following steps,
make sure the coolant has cooled down. The
sudden release of pressure from a heated
cooling system can result in loss of coolant
and possible personal injury (scalding) from
the hot liquid.
Sampling should be performed on a cold
engine.
Providing a sample of coolant for lab analysis
may be required at some point in the life of the
vehicle.
Typical material required:
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PA1621 Maintenance Manual All Series
SECTION 05: COOLING SYSTEM
Hand Vacuum Pump w/ bottle provision
Sample bottle
Plastic tube (1/4 "refrigerator" tube)
Nitrile gloves
Safety glasses
Shop Towels
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Section 05 revised Feb 2019
17