TM 5-3805-281-24-2
Fuel System
PERFORM NOZZLE LEAKAGE TEST
Bosch Injection Nozzle (Nippondenso Similar)
A--Upper Snap Ring
D--Lower Snap Ring
H--Spring Seat
L--Washer
(Bosch only)
E--Nozzle Holder
I--Intermediate Plate
B--Gland Nut O-Ring
F--Shim
J--Nozzle and Valve
C--Gland Nut
G--Nozzle Valve Spring
K--Nozzle Retaining Nut
3. Check for leakage around nozzle retaining nut (K)
1. Wipe nozzle dry.
thread connection with nozzle holder (E).
2. Bring pressure up slowly to 1970 kPa (20 bar)
Leakage indicates a bad seat either between nozzle
(285 psi) below the opening pressure. Watch for an
and intermediate plate (I) or between nozzle holder
accumulation of fuel from spray orifice, indicating a
and intermediate plate.
bad seat.
If nozzle drips within 10 seconds, replace nozzle
and valve (J).
Continued on next page
RG,RG34710,1306
1923OCT971/2