Specifications

4M41 ENGINE -
Injection Nozzle
11B-15-4
NOZZLE TIP, NEEDLE VALVE CLEANING
Wash the needle valve
13
and nozzle tip
12
removed in
clean kerosene (cleaning oil) and remove deposited carbon
from them in the following manners using t he specified special
tools.
(1) Remove carbon deposited on the tip of the needle valve
13
using the special tool Cleaning Bar.
Caution
For cleaning, never use a wire brush or any other
hard metal tool.
(2) Remove carbon deposited in the nozzle hole area of
the nozzle tip
12
by turning th e special tool Needle Cleaner
that runs through the nozzle hole.
Cleaning needle diameter: Less than
f
0.21 mm
(3) Clean the seat of the nozzle tip
12
using the special
tool Cleaning Scraper.
(4) To remove baked carbon, use the Fuso Carbon
Remover.
NOZZLE TIP, NEEDLE VALVE INSPECTION
(1) Wash the needle valve
13
and nozzle tip
12
clean in
clean kerosene (cleaning oil) prior to reassembly.
(2) Pull out the needle valve
13
to approximately one third
of its length, let go of it and see if it slides down by
gravity. (Repeat this procedure a few times after turning
the needle valve each time.)
(3) If the needle valve
13
fails to slide down by itself, wash
it again an d give it another check. Replace the needle
valve
13
and nozzle tip
12
as a set.
Caution
1. If a nozzle tip 12 is to be replaced, use a Nozzle
Service Kit to replace the needle valve 13, pin
14, lift piece 16 and spacer 15 at the same time.
2. After replacing the nozzle tip 12, be sure to readjust
the prelift to bring the valve opening pressure
to the specified standard value.
Standard value: 0.05 - 0.07 mm
PWEE9409-D
E
Feb. 2000Mitsubishi Motors Corporation Added
13
105789-0010
12
105789-0010
12
105789-0010
12
13
4ME0515