Control Rack And Pinions; Injection Nozzles; Reassembly - Mitsubishi MT160 Repair Manual

1
• Control rack and pinions
Inspect the rack and pinions for tooth wear
and damage. Badly worn or damaged rack and
pinions must be replaced.
• Tappet
Inspect each tappet for wear at its. sliding
surface, roller and shaft. A damaged or exces-
sively worn tappet must be replaced.
Injection nozzles
(I)
Inspect each nozzle for damage, paying
particular attention to its needle valve. If
the needle valve is not seating tight, as
evidenced by its contact pattern, or if any
part of the nozzle is damaged, replace the
whole nozzle assembly.
(2)
Check to be sure that pressure springs are
in good condition, free from any signs of
weakening.
(3)
Each nozzle assembly must be tested for
spray pattern after its reassembly. The
testing method will be explained in "Re-
assembly," below.
REASSEMBLY
Fuel fIlter
(1)
When setting the element, be sure that the
"0" ring fits snugly. With the element set
properly and "0" ring in place, tighten the
retaining nut fully.
(2) Secure the filter assembly to the support.
Fuel injection pump
(1)
Insert the barrel into the pump housing by
aligning its notch with the dowel of adjust-
ing plate.
(2) Fit "0" ring to valve holder.
(3) Insert spring seat, gasket and valve assembly
into the valve holder, and run the holder
into the pump housing. With the wrench,
tighten the holder in place to compress the
"0" ring fully.
ENGINE
(4) Feed the control rack into the pump
housing.
(5)
Install pinions, positioning each pinion in
such a way as to index its tall tooth (sided
by deep valleys) to the engraved line on
the rack.
Control rack
Engraved line
Meshing the rack with pinions
(6) Insert the upper seat and its spring into
each pumping element.
Pumping element parts
(7) Combine plunger with lower spring seat,
and insert the combination, bringing the
"L" mark on plunger flange to control rack
side.
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