Fiat Kobelco EX355 Tier2, Technical Manual

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W5-6-16 EX355
ENGINE FUEL
INJECTION PUMP
Identification
Use the injection pump assembly number (stamped
on the plate at the side of the pump) to determine the
applicable injection pump calibration data (refer to the
following page).
If the applicable calibration data is not listed in this
Manual, contact the manufacturer’s nearest author-
ized service facility (Bosch Automotive System Cor-
poration or Robert Bosch GMBH).
The Isuzu injection pump assembly number is also
included on the plate. Use this number to order a
replacement pump.
SM7334
Injection Pump Calibration Data
TEST CONDITIONS
Injection nozzle ZEXEL No. 105780-0000
Injection nozzle holder ZEXEL No. 105780-2080
Injection starting pressure 17.2 MPa
Injection line dimensions Inside diameter = 3 mm
Outside diameter = 8 mm
Length = 600 mm
Transfer pump pressure 255 kPa
Test diesel fuel IS04113 or SAE standard test oil (SAEJ967d)
Fuel temperature 39 - 41 °C (109.2 -114.8 °F)
Pump rotation Clockwise viewed from the drive side
Overflow valve opening pressure 255 kPa (2.6 kg/cm 2 / 37.0 psi)
CAUTION
Strictly observe the above test conditions during injection pump fuel injection volume adjustment. Failure to
observe the test conditions will result in misadjustment of the injection pump fuel injection volume.
Misadjustment of the fuel injection volume will result in serious engine damage.
INJECTION TIMING
Pre-stroke 2.9 ± 0.03 mm (0.114 ± 0.001 in.)
Injection order 1 - 5 - 3 - 6 - 2 - 4
Plungers are numbered from the drive side.
Tappet clearance Manually rotate the camshaft several times to
make sure that it rotates smoothly.