PS Magazine - OCTOBER 1977
PS, The Preventative Maintenance Monthly
ISSUE 299
OCTOBER 1977
tractors.
It's based on track slack rather than sag± It's simple ±±² and works better
than tHe sag measuremenT³
WhaT´s the difference betµeen slack
and sag?
Sag
is
the
d¶stance
betµeen
a
stra¶ght l¶ne and the actual pos¶t¶on of
the track³ It´s measured between tHe
front ¶dler and the upper track rollEr³
Slack ¶s the difference ¶n length
between
the
circumference
of
T·e
tracK system and the actual length of
the track¸ As The ¶dler is moved away
from the dr¶ve sprocKet, you ge¹ little
or no slackº As ¶Fs moved closeR to the
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