TM 5-3805-260-24
FUEL INJECTION NOZZLES
4.
Install new O-ring seals on adapter (3) and fuel
injection nozzle (4).
5.
Install the fuel injection nozzle in the head. Push
and turn to install the nozzle into its correct
position. Never put lubricant on the nozzle or
bore in the cylinder head.
6.
Install the adapter in the head. Connect the noz-
zle and fuel injection line to the adapter. Tighten
the nuts to a torque of 30 5 lb.ft. (40 7 N. m).
7.
Install the spacer and clamp that hold the nozzle
to the cylinder head.
end by:
a)
install rocker shafts
DISASSEMBLE FUEL INJECTION
NOZZLES
Tools Needed
A
B
C
D
8S2242
Nozzle Test Group
1
8S2250
Nozzle Holding Tool
1
5P958
Valve Retractor
1
5P4813
Socket
1
start by:
a)
remove fuel injection nozzles
NOTE: Do not disassemble any nozzle until a test has shown it is
needed. Check each nozzle with tool (A) for leakage, the pressure
at which the nozzle opens, and the shape and amount of fuel (spray
pattern) that comes out of the nozzle. Do not clean or make an
adjustment to any nozzle that has a large (excessive) amount of
return leakage. Excessive return leakage can be an indication of
nozzle failures that can not be corrected with an adjustment or
cleaning and can cause engine damage. See TESTING FUEL
INJECTION NOZZLES in TESTING AND ADJUSTING.
CAUTION: Keep the work area and all tools extra
clean. Be careful not to cause damage to the parts while
the nozzles are disassembled and assembled.
1.
Remove cap (1) from the fuel injection nozzle.
2.
Put the nozzle in tool (B). Put tool (B) and the
nozzle in a vise. Do not put any part of a nozzle
directly in a vise. Loosen locknut (2) while the
lift adjustment screw is held. Turn the lift ad-
justment screw (3) counterclockwise one turn.
Hold the lift adjustment screw (3) with a 5/64"
hex wrench and remove the locknut (2).
CAUTION: If the lift adjustment screw is not turned counterclockwise
one turn, the valve can be bent or the seat for the valve can be
damaged when the pressure adjustment screw is turned.
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