Mitsubishi S6R Series Service Manual page 187

Chapter 8 FUEL SYSTEM
2.3.4 Squareness, Free Length of Nozzle Spring,
Parallelism of Top and Bottom Faces - Measure
Measure the squareness, free length and parallelism of top
and bottom surfaces of nozzle spring.
Item Spring part No.
37561-26400
Free length
48726-00402
37561-26400
Squareness
48726-00402
37561-26400
Parallelism of top
and bottom surfaces
48726-00402
Note: When the nozzle tip is replaced, replace the spacer and
nozzle spring with new ones.
2.3.5 Push Rod - Inspect
Inspect the push rod visually. If its spring seat wears
unevenly, or its needle valve contact surface wears remark-
ably, or the cavitation occurs on its tapered area, replace the
push rod with a new one.
2.3.6 Spacer - Inspect
Inspect the spacer visually. If its needle valve contact sur-
face or high pressure seal surface wears remarkably, replace
the spacer with a new one.
Note: When the nozzle tip is replaced, replace the spacer and
nozzle spring with new ones.
8-28
Standard value
30 mm [1.18 in.]
26.8 mm [1.055 in.]
0.6 mm [0.024 in.] or less
1.25°or less
0.1 mm [0.004 in.] or less
0.65°or less
Squareness
Free length
Squareness, Free Length of Nozzle Spring,
Parallelism of Top and Bottom Faces - Measure
Needle valve contact surface wear
Push Rod - Inspect
High pressure seal face
Needle valve contact portion
ø6 mm [0.24 in.]
Spacer - Inspect
Square
Spring seating face
local wear
Cavitation
High pressure
seal face