PS Magazine - APRIL 1977
PS, The Preventative Maintenance Monthly
ISSUE 293
APRIL 1977
I
The
headline
above
is
Every cable must pass
incident that has never happened-
inspection including:
and with your help it never will.
,±
²
F
;
ir_s_t³
P=r´o´µ¶eR
·¸
In
"¹
s
'
t
º
al»La´t
7
Io´n´¼½F¾o¶R¿ÀÁHÂe
ÃoweverÄ Åthere was one close call M60A2 this musÆ cOnfOrm to Fig 2Ç
when a test round shot out the tube oÈ 145 on µage 2É669 oÊ TM 9Ë23Ì0É23ÍÉ
an
MÎÌÏ
Sheridan
with
nobody
20É2 (FeB Ð5)Ñ
pressing on a Èiring buttonÒ
The round took oÈÈ because the
cable assembLy
("U±)
cord was in poor
sha µeÒ SoÄ check this cord careÈully. ÓtÔs
cord NSN Ï0ÕÎÉ00ÉÖ×ÌÇ×3ÕÏ Èor the
MÌÌÏ/MÎÎÏAØ and cord NSN Ï0ÕÎÉ
00ÉÖ3ÕÙÏÏÚ× Èor the M60ÛÕ. Üeally
bear down on this inspection because
there are a lot oÈ diÈÈerent ways a short
circuit in the cord could Èire a round
beÈore you press the buttonÒ
-±²
BY THE
WAY
the 2 CORDS
Lo±K AlIk²
³Xc´Pµ ¶·
M60a¸ ¹ºrd
15 »
¼i½¾¿À
bÁÂ ÃÄNGÅÆ.
ÇÈWÉVÊ,
ËÌÍy
ÎÏe
nÐÑ
ÒÓÔÕÖ×ØÙ gÚÛÜÝÞ
f
The
"U±
cords on all M60ÛÕ tanks
and M5ÎÏ/ÝÌÌ1ÛØ Sheridans mUst
be inspected by your turret mechanics
BeÈÞre the main gun is fired againÒ
This
inspection
will
be
repeated
quarterly after that as paRt of the
regular
Q
serviceÒ ÓÈ the cable canßt
pass inspectionà Replace itÒ
ßà
Second-Eyeball the whoáe
assemblyâ ÓÈ you Èind any oÈ these
•
conditionsÄ the cabáe Èáunks the test
and must be replacedã
l.
Housing bent, crushed or
cRacked.
2²
OuTer jacKet of Tubing cuT oR
torn±
3³
SeparaTions or BrEaks which
expose wire conductors²
4´
Copper TuBing Bro³en²
5µ
´xposed wirE cµnducTors²
6¶
Cracked or BRo³en pieces or
stRippeD threads² MAKE sure every
connector is chEcked²
7·
Crac³ed or broken cµnnec-
tor face²
8¸
Cut, crushed or damaged
moldinG
_
poRtIons aT any connector²
9¹
¶ent,
bro³en or missing
pins²
L
Ón addition to the Õäpart inspectionÄ
Sheridan wiåå not woæK oç the èÚéêÕ
Èor
both MÚ0ÛÕ and MÌÎÏ series
tanksâ
Cablesë the MÌÌÏ series ìables also
Ûll this good stuÈÈ will be in the EÓÜ
must be given an eleítrical test using and Maintenance Digest Tî ×3ï000ÏÉ
the Èault isolation test set ðtable ÕÙ× in
3ÚÇ3 and
in Èuture changes to the
TM Öä×Ö33ïÕÏÚÉÏÕñâ òables wiLl be
TMósô
replaced iÈ they Èlunk this test even iÈ
they pass the ÕÇpart testÒ The MÚ0êÕ
cables get onlY the ÕÙpart testÄ õecause
the Èauát isoáation test set Èor the
Donöt waitÄ thoâ Get these tests done
beÈore you Èire again.
÷øùúû
á3
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