SERVICE MANUAL
NOZZLES
Section 12
- INJECTION NOZZLE SPECIFICATIONS -
VALUE IN
VALUE IN
DIMENSION TITLE
METRIC MEASURE
ENGLISH MEASURE
Nozzle cap nut torque (with nozzle installed) .............
45 N•m
33 Ib-ft
Nozzle retainer bolt torque
.....................................
27 N•m
20 Ib-ft
Injection high pressure line connector torque* ...........
41 N•m
30 Ib-ft
Leakage test pressures **
.....................................
3448 kPa
500 psi
Opening Pressure
24820 kPa
(3600 psi)
New or reconditioned
.....................................
25855 kPa
(3750 psi)
Minimum opening pressure before replacement........
20,000 kPa
2900 psi
* Injection line fittings at the pump and nozzle are frequently overtightened due to the fitting size (3/4"). This wedges the
injection line, often partly closing the ends. This alters fuel delivery characteristics, raises injection line pressures and
causes injection pump failures. Inspect the ends of the injection lines and discard any with wedged or damaged
fittings or holes.
** When subjected to 3448 kPa (500 psi) hydraulic pressure below opening pressure for 5 seconds, wetting of the nozzle
tip is permissible without the formation of a droplet.
INSTALLATION
Install the Injection Pump Nozzles as follows:
1.
When cylinder head is not removed, plug the
nozzle opening to prevent contaminants
from falling into the combustion chamber
when preparing the nozzle sleeve bore for
the nozzle sleeve.
2.
Refer to Section 3, for a detailed procedure
on nozzle sleeve installation.
CGES-185-3
PRINTED IN UNITED STATES OF AMERICA
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