Valtra A95l Betreibershandbuch PDF herunterladen (Seite 3)

--- 6 5 ---

G. Maintenance schedule

G2.2. Quality requirements of engine fuel

Property Requirement Test standard

Specific weight +15˚C, ISO 12185 0,82...0,86 kg/litre ASTM D 4052, EN

Viscosity +40˚C, 445, ISO 31041 1,2...4,5 mm

/s ASTM D

Sulphur content m a x . 0 , 2 p --- % ASTM D 4294, ISO 8754

Cetane number 4737 min. 51 ASTM D

Water content max. 200 mg/kg ASTM D 1744

Lubricity / HFRR max. 460 μm ISO 12156---1

The fuel must c onform to the EN 590 standard.

IMPORTANT: To mix fuel with any admixing materials is not

allowed.

G 2.2.1.

Fuel

--- The properties of light fuel oil that is only intended for

warming use do not meet the requirements of modern

diesel engines and cannot be used as fuel.

--- In particular, distributor---type injector pumps require the

fuel to have sufficient lubricity, because they do not

have oil lubrication in the same way as typical multi---el-

ement pumps. Adding oil t o diesel fuel is not recom-

mended, because it causes carbon build---up, and if oil

is mixed with even a small amount of water it will clog

the filter.

--- Additionally, various fuel quality requirements imposed

by taxation and seasonal changes have to be taken into

consideration.

G 2.2.2.

Fuel storage

--- Storing and distributing fuel must be arranged in condi-

tions where no water or impurities can enter the storage

tanks. The storage tanks must be installed in a slanted

position, so that water and impurities are collected at

the opposite end from the suction pipe of the pump.

The suction pipe of the pump should not reach the bot-

tom of the tank.

--- Water must be periodically drained from the tank in

order to prevent problems. Refueling at the same time

the tank is being refilled must be avoided without excep-

tion.

--- When the tank is filled with winter---quality fuel in good

time, the engine is guaranteed to run flawlessly during

the cold season.

G 2.2.3.

Filter system

--- The engine’s standard filter system gives sufficient

protection for the injection system from impurities that

can be present in well---tended distribution systems.

--- The control of distributor---type injection pumps is

based on internal pressure, which will drop if the fuel

system is clogged. If the pilot pressure drops too low,

engine power is reduced, smoke increased and starting

becomes more difficult. Additionally, water in the injec-

tion system will destroy it in a very short time. For this

reason, the water t rap and the filters must always be

serviced according to the specified amount of run-

ning hours.

--- It is also important always to use original Valtra (or Sisu

Diesel) fuel filters. They guarantee sufficient filtration,

preventing impurities from damaging the fuel system.

There are many cheap filter kits (so---called pirates) on

the market, with lower quality and performance in order

to minimise the cost. Among other things, the quality

and amount of filter paper are often insufficient. There

are also often dangerous defects in the basic structure

that may cause expensive damage even in a short

period of time.

G 2.2.4.

Biodiesel fuel

The only possible alternative fuel to use is RME

(Rapeseed Methyl Ester) Biodiesel according to European

norm EN 14214 or US norm ASTM D6751. When using

Biodiesel the engine capacity is almost the same as using

diesel fuel.

1 2 3 4 5 6 7 8 ... 36 37

Kommentare zu diesen Handbüchern

Keine Kommentare

Valtra A95l Betreibershandbuch Seite 3

Kommentare zu diesen Handbüchern