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Service Manual Mitsubishi SL-Series diesel engines
Version 08/2004
ENGLISH
FUEL INJECTION PUMP FUEL SYSTEM
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40.4.4 Tappet installation
Move the control rack back and forth while pushing
down on each tappet to align the slot in the tappet with
the hole in the housing for the tappet guide pin. Install
the lock plates and tappet guide pins in position.
40.4.5 Delivery valve holder installation
Put the delivery valve holders in position and tighten
them to the specified torque.
40.4.6 Inspection after assembly
1. After the injection pump has been assembled,
check to see if the control rack moves freely
without any binding or catching.
2. If the control rack fails to move freely, the possible
causes are:
a Pumping element(s) sticking
b Foreign particles lodged between control rack
and sleeves
c Over-tightening of delivery valve holder(s)
Disassemble and check the injection pump to
locate the cause of the trouble.
3. After the injection pump has been finally
assembled, check the injection timing.
Figure 234 Installing tappets
CAUTION
Any time the injection pump is disassembled, new
lock plates must be used.
Figure 235 Tightening delivery valve holders
4.5±0.5 kgf·m
(32.5±4 lbf·ft)
[44±5 N·m]
CAUTION
Do not over tighten the delivery valve holders. This
can put end force on the barrels, resulting in a failure
of the plungers to move freely. If the holders are not
tightened to the specified torque, engine oil would
leak in the injection pump.
Figure 236 Checking control rack movement
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