103
18-10-2004
18-10-2004
00
REG. CODE
1-5302-662
MODEL N°
51092
DATE OF ISSUE
REVISION
ENDORSED
COMPILER TECO/ATI
DATE
342
343
344
345
346
347
A
R
R
A
B
Z
V
XI
Adjustment of pump control rod
In case of engine overhauling or interventions on delivery control it is necessary to check the position of injection pump
control rod and if necessary carry out the adjustment as follows: fit dial gauge on tool 981075.423, insert ring 984070.499
on tool making sure that pin "R"seats in its concerning slot; let tool reference 984070.499 hole match with the one of the
ring; insert punch “A” and set to zero dial gauge.
Take away the ring "A" and fit the tool on the place of the injection pump making sure that pin “R” of tool is inserted into
the hole of pump control rod, then fit reference punch “A” and lock the tool with both nuts.
Place lever “B” of accelerator to max. position and check that dial gauge is on the previously carried out zero setting
position. If these conditions do not occur act on adjusting screw “Z” until such zero setting is realized.Lock, by holding the
screw “Z” steady, lock-nut “V” and check by placing more times lever “B” to max position, that the dial gauge result is set
to zero.
Warning - The mentioned checking operations must be carried out without injection pump control tappet.
tool 981075.423
ring
984070.499
DISASSEMBLY/REASSEMBLY
INJECTION EQUIPMENT DESCRIPTION AND FUNTIONING
FUEL INJECTION
In the Diesel engine the fuel is injected towards the end of the compression process into the precombustion chamber via the
injection pump and relative injector.
The quantity of fuel injected for each cycle is regulated by a function of the power/capacity required through the rotation of the
pumping element of the injection pump that is carried out by the regulation rod.
FUEL FLOW CONTROL
The regulation rod is set into action by the governor. The governor is connected to the upper part of the engine and is driven
by a shaft connected with the camshaft.
The principal functions of the governor are :
- engine idle speed control
- to limit engine maximum rpm
- to increase fuel flow at the engine starting.
Содержание LDW 422 SERIES
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