Mitsubishi diesel engines Service Manual page 110

(6)
Inspecting the control rack for smooth operation
(a)
With the fuel injection pumps assembled,
ensure that the control rack slides smoothly.
(b)
If not, possible causes include the following.
1) The elements do not slide smoothly.
2) Foreign matter is trapped between the
teeth of rack and sleeve.
3) The delivery valve holders have been
overtightened.
Disassemble and inspect.
(c) After reassembly, check the fuel injection
timing.
FUEL SYSTEM - DISASSEMBLY, INSPECTION AND REASSEMBLY
Inspecting the control rack for smooth
operation
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