Case 2050M Operator's Manual page 177

The main concerns about operation of equipment with
biodiesel fuels are:
• Filter and injector blockage caused by poor fuel quality
• Wear and corrosion of internal components due to wa-
ter content, which affects lubricity
• Deterioration of some rubber sealing compounds in the
fuel system
• Biodiesel oxidation, which can lead to the formation of
deposits that may harm the fuel injection system
NOTICE: CASE CONSTRUCTION Warranty will not
cover any problem in the engine fuel injection equip-
ment that results from non-compliance with the following
conditions for biodiesel fuel handling and biodiesel fuel
maintenance.
Purchase biodiesel fuel from a trusted supplier who
understands the product and maintains acceptable
fuel quality. It is highly recommended that you use
biodiesel from BQ 9000 accredited suppliers to maintain
the quality and consistency of the fuel. The BQ 9000
Quality Management Program is accredited by the Na-
tional Biodiesel Board for producers and marketers of
biodiesel fuel. See the National Biodiesel Board website
at www.biodiesel.org for more information.
The supplier must pre-blend biodiesel fuel.
biodiesel fuel blends on-site can result in an incorrect
mixture that may damage the engine and/or fuel system.
For machines using Tier 4A (interim) and Stage IIIA
engines with an exhaust aftertreatment system, the
use of biodiesel blends above B5 through B20 will not
void the CASE CONSTRUCTION warranty as long as
you stringently follow these conditions for biodiesel fuel
handling and maintenance:
1. If you use a biodiesel blend stock to ASTM D6751,
you must take special precautions. Ensure that the
biodiesel blend stock fully complies with the following
special requirements:
• Group I Metals content (sodium and potassium)
must be less than or equal to 5 mg/kg per EN14538.
• Group II Metals content (calcium and magnesium)
must be less than or equal to 5 mg/kg per EN14538.
• Phosphorus content lower than 4 mg/kg is a
mandatory requirement (per ASTM D4951).
2. The resulting greater than B5 through B20 blend must
not exceed 1 mg/kg for Group I Metals (sodium and
potassium) and for Group II Metals (calcium and mag-
nesium).
7 - MAINTENANCE
NOTICE: For machines using Tier 4A (interim) and
Stage IIIA engines with an exhaust aftertreatment
system in regions where the biodiesel fuel blend
stock is supplied to the ASTM D6751 standards, it is
essential that evidence of compliance to the special
limits for Group I Metals, Group II Metals and the re-
duced phosphorus content specified above be ob-
tained on every delivery of fuel from the fuel sup-
plier. Failure to comply with this requirement can
result in damage to the catalyst of the aftertreat-
ment system that will not be covered under war-
ranty.
NOTICE: CASE CONSTRUCTION may void your war-
ranty if the problem is associated with poor fuel quality
due to improper blending. It is the responsibility of the
fuel supplier and/or yourself to ensure the right type of
fuel and blend is delivered and used.
Maintenance intervals
For machines using the all-electronic engines with a high-
pressure common rail fuel system, the use of biodiesel
blends up to B20 reduces the engine oil and filter change
interval to 250 h. For all engines, see the operator's man-
ual for specific maintenance intervals.
Mixing
Check all hoses, connections and gaskets to ensure in-
tegrity and cleanliness every 3 months or 150 hours of
operation, whichever comes first.
Regular oil sampling is highly recommended to monitor
for oil deterioration and engine deterioration.
NOTE: Oil sampling kits are available from your autho-
rized CASE CONSTRUCTION dealer.
When switching back from biodiesel to regular #2 diesel,
you should change all fuel filters, oil and oil filter even if
the changeover falls between routine service intervals.
Storage
You should not store the machine for more than three
months with biodiesel fuel in the fuel system. For longer
storage time, CASE CONSTRUCTION strongly suggests
that you use only regular #2 diesel fuel.
NOTE: If you must store a machine for longer than 3
months, you must run the engine on regular #2 diesel fuel
for a minimum of 20 h prior to storage. This will flush the
biodiesel fuel out of the fuel system.
Biodiesel fuel is highly hygroscopic and tends to collect
water more than diesel fuel. Water collection increases
the risk of algae and bacteria growth that can cause se-
vere damage to the fuel injection system. Keep the ma-
chine fuel tanks and on-site storage tanks as full as possi-
ble to limit the amount of air and water vapor inside. Drain
water from the tanks at least once a week.
NOTICE: Use only CASE CONSTRUCTION approved
biocide additives.
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