TM 5-3805-280-24-2
Fuel System
35
General Nozzle Repair Notes:
68
NOTE: Disassembly of nozzles is not recommended
unless servicing is indicated by nozzle operation
and testing.
Since dirt and water are the worst contaminants in the fuel
injection system, the working area, tools and cleaning
materials must be kept spotlessly clean. Whenever
possible, work in an isolated, dust-free area.
Cover the work bench with clean paper before beginning
disassembly of injection nozzles.
As parts are disassembled, place then in a pan of clean
diesel fuel and leave there until needed. Do not permit
these parts to strike each other.
Use a separate pan of clean fuel for washing parts before
assembly.
A--Nozzle Assembly
B--Tube Nut
C--Packing
D--Leak-Off-Fitting
E--Cap Screw
F--Carbon Stop Seal
G--Upper Sealing Washer
H--Spacer
RG,35,JW7591
1920NOV972/4
To Disassemble Fuel Injection Nozzle:
1. Place nozzle in ROS17787 Holding Fixture or nozzle
index clamp (A) and secure fixture or clamp in a vise.
2. Loosen pressure adjusting lock nut (B).
3. Back out lift adjusting screw lock nut (C) and lift
assembly.
4. Invert nozzle and allow pressure adjusting spring seat
and lift adjusting assembly to fall into your hand. Do
not bend stem during removal.
A--Nozzle Index Clamp
B--Pressure Adjusting Lock Nut
C--Lift Adjusting Lock Nut
Continued on next page
RG,35,JW7591
1920NOV973/4
13-447
