BREECH RING-Interrupled step thread dam
maged, nicked, burred: powder chamber an
breech recess contains carbon.
 (Badly worn bottom Ihieads ale you clue tha
 the Ihrust washer on the bieechblock airierr hing
 pin is worn out For that matter, a worn washed
 could also be at fault if you run into binding whe
 you ie opening or closing the bieechblock I


BREECH MECHANISM ASCeMBLY rsari *_*


 COUNTERBALANCE -Spring weak; unit out
 S ol adjustment: bracket screws missing,
 loose; cylinder scored; collar worn
it (You can't see the spring, but if the breech closes
e hard, you'll know the spring s shot or what s
r more likely the counleibalance's out ol adust.
n ment Support'll have to replace the spring for you,
 but you can adjust the counterbalance yourself by
 following the poop in Fig 107 of your -10 M I
 ^ ____ __ <27


BREECHBLOCK CARRIER AS',.EMBLY-Carrer chipped;
operating handle latch mounting i.,:rew loose. mrsing;
latch spring weak, hinge pin rusilv cooler pin worn, broken,
operating lever bolt badly worn: carrier thrust washer miss
ing damaged


 /,


L


 1 W ^H F THRUSTI n^'
 I ^ WASHER /
OBTURATOR SPINDLE ASSEMBLY-Mushroom head powder-louled, corroded, badly
pitted; split rings chipped, corroded; gas check pad damaged, worn, burnt, deteri.
orated; inner ring damaged, thrust washer missing, badly worn. /
 (Don't forget, there're two split rings front and rear and the splits in the rings should
be 180 degrees apart The gas check pod needs special attention. Improper cleaning will ruin
it. Use soap and water only no cleaning solvents, gas. bore cleaner. or anything else.
And when the gas check pad's in place, it has to be kept real dry so watch out with that
lube, eh? Another reminder Never open the breechblock on either weapon when the firing
block assembly s in the disassembly" position. It II beat up the cam roller
 Sos you don't get mixed up the M 07 uses a shim with a polyurelhene pad and the
MI 10 uses a Geidom-type pod)


BREECHBLOCh -Inlerrupted thread,
nicked, burred, chipped badly worn.
rusty, corroded, powder louled; prim
er vent dirty, clogged; roller pivot
damaged; roller worn cotter pin
busted; control arc damaged, screw
loose, missing


BREECHBLOCK OPERATING GROUP-Handle
bent, lever pin missing, loose; lever bearing
scored, nicked; crankshaft bent; crank chip-
ped pin bent, missing; crosshead cracked,
chipped.

 LEVER
 PIN


 BREECH
 BLOCK
 OPERATING
 SPACER LEVER




 CRANKSHAFT
 SHAFT





 CRANKSHAFT
 CRANK

 CROSS HEAD SPRING
 PIN