PS Magazine - MAY 1984
PS, The Preventative Maintenance Monthly
ISSUE 378
MAY 1984
M578/M110-Series Vehicles .±²
Beat Bearing BurnoUt
adapter bushing and reinstall them in
the hubcap.
v
Put the pipe plug in the hole where
the relief valve was and pump in lube.
When the Lube comes out the relief
valve in the hubcap, you'll be sure
there's plenty of grease on both
bearings.
v
Finally, move the pipe plug and
relief valVe back to their original places.
That will protect the ±itting from
damage.
8V71 T Dipstick G±ide
NSN 4710-01²021³6014 gets you the dipstick guide ´r tHe 8µ71 T enginE us¶
e
in M578 recovery vehicles, M· JO-sEries Howitzers and Mj09-series howitZers.
The NSN is not listed in the vehicle's ¸20P's.
14
MAY 8
"
HOW woULD Y±u lIKE A
²iT³´ µF tha¶ P·¸N¹ SpRyºd
, _.
»n ¼½¾r
EAR?
M11³´Seµies Howitzers
.±²
'
r
•
No Paint on the Check Valve
The check vaLve on your MI JO¸series
howitzers must be free of paint (or
anything eLse) to do its ¹ob.
During counter¸recoil, some oil or
moisture or both is ºrced out the4 little
holes in the center of the valve. That's
what is supposed to happen» ¼t prevents
vacuum buildup in the counter¸recoil
cylinder.
¿
vacuum in the cylinder will pull oil
past the counter¸recoil rod piston½
So¾¿¾¿¸¿, if there's paint or something
else blocking theÀ holesÁ you're going
to have recoil problems soon.
Âook at your check valve. ¼f there's
paint on it, get your mechanic to
remove it with a wire brush.
MÀkÁ sÂÃÁ
ÄÅÆÇÈÄg
bÉÅcks
ÆÇÁsÁ
ÇÅÊÁs!
No paint? Then check the valve's
operation. First, be sure tHe travel lock
is secured be±Ãre retracting the tubÄÅ
Put your hanÆ in ±Ront of the 4 little
holes while another crewman retracts
the gun tube and returns it to the inÇ
battery position. ¼f no air comes out,
tell your artillery mech. Èe'll fix it.
M1±0/M578
²-bel³ ´SN
I
NSN 3030¸01ÉÊË9¸3068 getÌ You thE ÍiÎE pÏÍErBanÆ BElt Íith 4 ÐÑEs. Use
it to replace tHe
4
Ìeparate Òn BElts Ïn Your HoÍitÓEr Ïr recÏÐeÔ ÐEHicÕÖ
cooling sYÌtem.
MAY ³´
15
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