Biodiesel Fuels And Auxiliary Heaters; Biodiesel Fuels And The Engine; Air Cleaner (Dry Type); Pre-Cleaner Servicing - PREVOST H3-41 Maintenance Manual

components, provided the biofuel used in the
blend conforms to ASTM D6751, B1 to B5
blends conform to ASTM D975, and B6 to B20
blends conform to ASTM D7467. Also, any
engine performance problem related to the use
of biodiesel fuel would not be recognized nor
considered as Volvo or Prevost's responsibility.
However, Volvo engines are certified to comply
with U.S. EPA and
standards based upon the use of test fuels with
specifications established by these regulatory
agencies.
Alternative fuels, including biodiesel, that are not
substantially similar to the required test fuels
may adversely affect
compliance. As a result, Volvo does not warrant
the engine will conform to applicable Federal or
California emissions limits when operated on
biodiesel or other alternative fuels that are not
substantially similar to specified test fuels used
for certification.
Additional maintenance care must be carried-out
for the following systems:
7.3.1

Biodiesel fuels and auxiliary heaters

For operation of the auxiliary heater with
biodiesel, a retrofit is mandatory. Refer to the
guidelines outlined in the Spheros Workshop
Manual for Thermo 230, 300, 350 (doc P/N
9003656D), available
Publications USB flash drive and on Prevost
technical publications website.
7.3.2

Biodiesel fuels and the engine

Use an oil sampling method to establish the
appropriate oil drain interval for your application.
Fuel filter change intervals should be analyzed
and adjusted accordingly.

8. AIR CLEANER (DRY TYPE)

The vehicle is equipped with a dry-type
replaceable element air cleaner, located in the
engine compartment.
through the engine R.H. side door. Engine air
enters the air cleaner through an intake duct on
the R.H. side of the rear cap, next to the last
window. It then flows through a pre-cleaner and
finally through the air cleaner. The pre-cleaner
removes dust and moisture by means of a
discharge tube at the bottom of the element. It is
in series with a replaceable impregnated paper
filter element (air cleaner).
California emissions
engine emissions
on the Technical
Access the air cleaner
PA1615 Maintenance Manual All Series
SECTION 03 : FUEL SYSTEM

8.1 PRE-CLEANER SERVICING

MAINTENANCE
The pre-cleaner
self-cleaning; however, it should be inspected
and any accumulated foreign material removed
during the periodic
impregnated paper filter element.

8.2 AIR CLEANER SERVICING

Stop the engine, open the R.H. side engine
compartment door, and loosen the wing nut
retaining the air cleaner element to the air
cleaner. Remove the element by pulling on the
handle in the center of the air cleaner element.
Install cleaner element as follows:
1. Inspect the gasket-sealing surface inside the
air cleaner. It must be smooth, flat and clean;
2. Install the air cleaner element;
3. Make sure that the element seals securely;
4. Inspect element cover gasket and replace if
necessary.
Whenever it becomes necessary to remove the
air cleaner assembly (dry type) for maintenance
or other repair in this area, great care should be
taken when installing air cleaner assembly.
The pre-filter should be installed snugly in the air
duct and clamped tightly to the air cleaner inlet
to prevent any dust infiltration into the air
cleaner.

8.3 GENERAL RECOMMENDATIONS

The following maintenance procedures will
ensure efficient air cleaner operation:
1. Keep the air cleaner housing tight on the air
intake pipe;
2. Make sure the correct filters are used for
replacement;
3. Keep the air cleaner properly assembled so
the joints are air-tight;
4. Immediately repair any damage to the air
cleaner or related parts;
5. Inspect, clean or replace the air cleaner or
elements as operating conditions warrant.
Whenever an element has been removed
from the air cleaner housing the inside
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Section 03 revised September 2016
is designed to be
replacement of the
15