Mitsubishi S6R Series User Manual

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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.
Note: When the nozzle tip is replaced, replace the spacer and
nozzle spring with new ones.
Squareness, Free Length of Nozzle Spring,
Parallelism of Top and Bottom Faces - Measure
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.
Push Rod - Inspect
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.
Spacer - Inspect
Item Spring part No. Standard value
Free length
37561-26400 30 mm [1.18 in.]
48726-00402 26.8 mm [1.055 in.]
Squareness
37561-26400 0.6 mm [0.024 in.] or less
48726-00402 1.25°or less
Parallelism of top
and bottom surfaces
37561-26400 0.1 mm [0.004 in.] or less
48726-00402 0.65°or less
Squareness
Square
Free length
Spring seating face
local wear
Needle valve contact surface wear
Cavitation
ø6 mm [0.24 in.]
Needle valve contact portion
High pressure
seal face
High pressure seal face

Mitsubishi S6R Series Specifications

General

Brand	Mitsubishi
Model	S6R Series
Category	Engine
Language	English