TM 9-4310-397-14
SECTION II MAINTENANCE INSTRUCTIONS
6-2. GENERAL.
The only items restricted to general support maintenance level by the Maintenance Allocation Chart (MAC) are the repair
or replacement of the following engine components. However, general support maintenance may be called upon, at
times to perform any or all of the MAC items listed for Unit and Direct Support Maintenance for rehabilitation or overhaul
of an air compressor.
6-3. FUEL INJECTION NOZ7ZLE REPAIR AND REPLACEMENT .
This task covers:
a.
Removal
b.
Cleaning
c.
Testing
d.
Adjusting
e.
Installation
INITIAL SETUP
Tools:
Equipment Conditions:
Automotive Maintenance and Repair
Engine removed. (See para 4-72.)
Item 2, Section III, Appendix B
a.
Removal.
(1)
Carefully remove all dirt from the cylinder head around fuel injection nozzles.
(2)
Clean with compressed air in order to prevent dirt from entering the cylinder or valve seats.
(3)
Plug the bore in the cylinder head after fuel injection nozzle has been removed.
(4)
Cap fuel line openings as soon as they are removed.
CAUTION
Damage to nozzles can occur if not protected after removal. Improper fuel flow can result causing
damage to engine.
(5)
Fit protecting caps immediately over the nozzle tips and the line connections to avoid damage to the
nozzles when handling them.
CAUTION
Bending the fuel pressure lines can affect their durability.
(6)
Remove only leak-off lines to fuel tank and to fuel injection pump at T-pieces.
6-2
