PS Magazine - MARCH 1972
PS, The Preventative Maintenance Monthly
1972 SERIES, ISSUE 232
MARCH 1972
DRAINING THE M22BM GEAR CASE .
..
-
.
_
CALL YOUR SHOTS
Just taking out a plug won't always
drain aLl the oil from the main gear case
of the M22B± 12 \-ton crane-shoveL.
Some crane-shovEl moDEls
Have Rwo
You gotta go through all the steps to
drain plugs there² Both have to comE out
be sure.
to drain alL the oiL.
First off, see if the flexibLE hosE to tHE
center cavity of the upper
³
works is plug´
ged or pinchedµ
get
the
sump
drained
com-
If it's cloggEd, oil won't drain from the
vertica¶ swing and travel gEars² CouLd be
as much as ·2 quarts stashed away up
there.
Not a drop of new oil goes in till the
entire gEar case has ¸een checked out²
This is the onLy way to filL the ¸ill of
32 quarts in the ¹O.
ºow do you get an accurate oil lEvel
check after filling?
You'll ¸e on target only if you engage
the master cLutch and run the machine a
few minutes before you check to sEe if the
oiL is up to the level plugµ
6
"FROST-FREE PIVOt PIN
That freezing apron pivot pin on your
CT4 18-cu yd scraper can bE defrosted for
good²
A
new fix caLls f»r driLling lubrication
grooves into thE pin a¼d ½¾E substitution
of bigger pin stopsµ With LubE, this should
keep any apron pivot pin from sticking
to its bushing and shEaring off thE pin
¿tops.
If you'vE been tearing out your hair on
how to make the fix, HerE's what you doµ
If overseas, contact thE MÀCOM SEÁvicE
OfficE (MSO) in your arEaµ Ân ÃOÄUS,
If you're a lucky joe wHo Hasn't Had
this hEadachE yEt, bE surE to kEEp your
Eye (and lots of lubeÅ on thE apron pivot
pins you now havE² PM on 'EÆ can go
a long way.
tRACtOR SAFETY TB
A
dozEÇÈbladE load of grEat manÉsavi¼g tricks fills tHE TÊ 385-5 (Mar 70Å. Its
24 pages of pictures spEll out a good world-wiDe SOP for preventive Damage a¼d inË
ÌuriEs on tracked tractors² TitlE: "SafÍty Manual, ÃraÎlEr TractorÏÐ OrdEÑ copies
soonest on
DA
FoÒm 17 Órom tHE St² ¹ouis Pubs CEntErÔ
±1
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