PS Magazine - JULY 1986

PS, The Preventative Maintenance Monthly

ISSUE 404

JULY 1986
PS Magazine - JULY 1986 - Page 5 of 35
M198
Howitzer
Screw
The equilibrator adjusting screws
have bras$ heads that easily crack if
You force them, or round out if you
turn them witH a wrong tool.
Once ±he screws are ruined, youR
howitze² will be down until DS can
get new screws.
Never force the screws. If one
turns hard, either raise the can³on to
its hiGhest elevation to Raise tHe
eqUilibrator dial pointer, or loWer it
to the lowest elevation to lower the
pointer. If a screw still won't budge´
call your mech.
To turn the screws´ use only tHe
socket wrench handle´ NSN 5120-00-
236µ7590´ that coMes as
Bil
for the
¶ 198. If you use any other tool´ you·
can round out tHe socket Head of tHe
screws.
6
Keep screw threads clean. Dirt
makes the screws hard to turn. ¶ore
force means more wear and tear. A
·
weekly lube with PLµS will also help
keep the screws turning.
Fabricated colLar
goes over screw
heaD
¸ouR ¹º u»¼t can
stop scREws Fom
crac½¾nG w¾¿ a stEEÀ coÀÀaRÁ ¹eta¾Às are
on ÂagE CµÃ oÄ ÅÆCCOÆ Âam ÇÃ0µÈ0
(ÅuG
8
Ã
).
I
Éou don't HaVE a copÉÊ youR
ÀocË
ÅÆCCOÆ Ìog¾st¾c
Åss¾staÍcE
ÎEprEsentatiVE can gEt Éou onE.
1
PSs ±T
±²³
L²³tEN U,
bV´. µ
yOu
Oo¶
'
·
CHecK M¸ ¹º
»F
¼ou h½
m¾ ¿p/ YÀ ÁW
ÂAvà a
6´4 CS!
µ
¶ 109Ïseries and Æ992 mecHs´ tÐose powerÑack lifting slings need youR
attention .
.. now! TÐey may Be ÒÓngerous.
Ôhe wire ropes pull loose froM tHe swaGe fittings. Õou can ÒroÑ a HeaVÉ
load.
Öo r¾gÐt now .
.. before you use tÐÓ× sling again .
.. look at tHose ØiRe Ropes
wHere tHey go into tHe sØage fÙ××¾Ígs.
Úf you see sHiny spots on ×Ðe Rope neÓR tHe swaÛe f¾×ting´ ×Ðe Rope's
slipÑing.
RÄÅÆÇÈ É
¶·IPp¸NQ
rÊËÌ1
ÍÎÏÐÑ wÒÓÔ
YU
nÕÖ
¹º
• WIRe ROpE assEmbly (shORT),
SN
»0¼0-0¼½¼0¾½52¼7
•WIRE ROpE assembly (lOng), NSN
»0¼0-0¼½¼0¾½52¼¾
•ShacklE± NSN
»030½00½¼»¿À557»
• PIn² N³N
5Á¼5½00Â05¿½0¼¾Ã
•´AshERµ N¶N
Ä3¼Å½00ƾ0¿½¾533
Üf Éou Ge× a ÍeØ sliÍÝ ÄRoM ÞÖß
MÓke sure it's MaR½eÒ´ sÐoؾÍÛ ¾×
ÑasseÒ tÐe loaÒ test ÓÍÒ ×Ðe ÒÓ×e ¾×
ÑÓsseÒ.
Õou'll f¾ÍÒ ×оs iÍÄo ¾Í Ô àáâÆ
Sâã Æsg à¶ÖÔàäÆåå
03×800Z
Þæc ç5. ÜÄ you Òon't ÐaVe Ó èoÑÉß see
your TAåâ Æ éoÛ¾s×iè àss¾s×ÓÍèe
ÎeÑResenta×¾Ve.
JØÙy Ú6
7
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