SERV-HB 38Z3 EN – Edition 2.1 * 38z3s420_Tier 3.fm
☞
Read the degrees before top dead centre by means of the indentations on the flywheel
•
Mark the “1/4” and “2/3” indents (top dead centre)
•
In front of each of these indents, there are 3 more indents without numbers. These
indents stand for 10°, 15° and 20° before top dead centre
➥
Rated value: calculation according to Yanmar manual:
value on injection pump (in this case: 6.8 see
Fig. 11
) x 2 + FIR
(FIR for 38Z3 = 4.5)
•
Variations outside the tolerance range can be corrected by turning the fuel injection
pump.
☞
Mark the initial position on the pump and wheel case housing before setting the fuel
injection pump – see Fig. 9
☞
Remove all injection lines on the fuel injection pump and slacken the 4 flange screws by
about ½ a revolution (do not unscrew completely)
☞
Rotate the pump in the required direction, and tighten one of the screws before you
check the setting
➥
Rotated towards the engine: later injection time
➥
Rotated away from the engine: earlier injection time
☞
Bend each of the injection lines before you mount them so they are not subject to
tension once they are mounted
☞
Check injection time again
☞
Adhesive label number 1000158808
Fig. 8:
Top dead centre indentation and 10° before top
dead centre
Fig. 9:
Mark on housing
Label for setting
4-19
Engine
Setting injection time
Содержание 38Z3
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