JLG 660SJ Service Manual - Manual (Page 145)

SECTION 3 - CHASSIS & TURNTABLE
3121202 – JLG Lift – 3-95
BASIC CONDITIONS TO BE OBSERVED
• A power loss of 5-9 % in relation to diesel fuel in accor-
dance with EN 590 is possible due to the lower heating
value. Blocking of the fuel injector is not allowed.
• The lubricating oil quality must correspond to TR
0199-99-3002. The lubricating oil change interval must
be halved in relation to operation with diesel fuel in
accordance with EN 590.
• Standstills of longer than 4 to 6 weeks must be avoided
with bio-diesel. Otherwise the engine must be started
and stopped with diesel fuel.
• Bio-diesels can be mixed with normal diesel fuel but the
basic conditions described in this subsection apply for
mixtures. Mixtures with up to 5 % (m/m) bio-diesel (B5)
which have recently been on sale at European fuel sta-
tions are excepted. These fuels must be treated like
normal diesel fuels because EN 590 expressly permits
adding up to 5 % (m/m) bio-diesel in accordance with
EN 14214.
• Approx. 30-50 hours after changing over from diesel fuel
to bio-diesel, the fuel filter should be changed as a pre-
ventive measure to avoid a drop in performance due to
clogged fuel filters. Deposited fuel ageing products are
dissolved by bio-diesel and transported into the fuel fil-
ter. They should not be changed immediately but after
approx. 30 to 50 hours because the dissolving of dirt
takes a certain amount of time.
PLANT OIL
PURE PLANT OILS (E.G. RAPE SEED OIL, SOY OIL, PALM OIL) ARE
NOT CLASSIFIED AS BIO-DIESEL AND EXHIBIT PROBLEMATICAL
PROPERTIES FOR DIESEL ENGINE OPERATION (STRONG TENDENCY
TO COKE, RISK OF PISTON SEIZURE, EXTREMELY HIGH VISCOSITY,
POOR EVAPORATION BEHAVIOR.
The conversion of DEUTZ engines to rape seed oil fuel
operation with conversion kits and modified tanks systems
of various manufacturers is not allowed and leads to loss
of warranty rights.
Biological Contamination In Fuels
SYMPTOMS
The following symptoms may indicate that a fuel tank is
contaminated by micro-organisms:
• Internal tank corrosion,
• Filter blockage and the associated loss of power due to
gel-like deposits on the fuel filter (especially after long
standstills)
CAUSE
Micro-organisms (bacteria, yeasts, funguses) can form bio-
sludge under unfavorable conditions (favoured particularly
by heat and water).
Penetration by water is usually caused by condensation of
the water in the air. Water does not dissolve in fuel so that
the penetrating water collects at the bottom of the tank. The
bacteria and funguses grow in the watery phase, at the
phase boundary to the fuel phase, from which they draw
their nutrition. There is an increased risk especially with bio-
diesel (FAME).
PREVENTIVE MEASURES
• Keep the storage tank clean, regular cleaning of the
tank by specialist companies
• Installation of fuel pre-filters with water traps, especially
in countries with frequently fluctuating fuel qualities and
high percentage of water.
If the fuel system and storage tank have already been
attacked by micro-organisms. The biocide must be dosed
according to the manufacturer's specifications.
• Avoid direct exposure of the storage tank to sunlight
• Use smaller storage tanks with corresponding low
dwell times of the stored fuel
FUEL ADDITIVES
The use of fuel additives is not permitted. The flow improv-
ers mentioned above are an exception. Use of unsuitable
additives will result in loss of warranty.