C6, TM 9-2350-230-12
Table 13-3. Specific Lubrication Instructions
STEP
PROCEDURE
USUAL CONDITIONS 7.62MM MACHINE GUN M73E1
1
Immediately after firing, clean all powder fouled surfaces with (CR) rifle bore cleaning compound.
CAUTION Do not use rifle bore cleaning compound to clean back plate assembly. Use clean
cloths to remove foreign matter. Do not lubricate the back plate assembly due to danger of
MAJOR GROUPS AND ASSEMBLIES
2
Disassemble machine gun into its major groups and assemblies, table 5-9.
3
Clean the components with SD, dry cleaning solvent.
4
Wipe dry and oil with PL special, general purpose lubricating oil, above 0 For LAW, weapons lubricating
oil, below 0 F
5
Thereafter, clean and oil as above every 90 days unless inspection reveals shorter intervals are required.
6
Assemble the major groups and assemblies, table 5-9.
7
Remove oil from barrel bore before firing.
APPLICATION OF SEMI-FLUID LUBRICATING OIL (LSA)
Semi-fluid lubricating oil is an all purpose lubricant which may be applied in all temperature ranges. This
lubricant should be applied before the weapon is fired.
8
Disassemble gun into major groups and assemblies, table 5-9. Specific points to be lubricated are:
a. In recesses or grooves wherein the belt feed slide and the feed cam rides in the cover assembly.
b. In breechblock camways and in receiver rail and cartridge rammer grooves of the barrel extension.
On all rollers and roller riding surfaces.
c.
On the receiver rails and in the breech closing, hammer cocking, breech opening, and breechblock
roller camming groove areas of the receiver.
NOTE . LSA should be used sparingly. After lubricating, the components will be functioned to allow
the oil to spread.
13-5