PS Magazine - TB 43-PS-736
PS, The Preventative Maintenance Monthly
ISSUE 736
MARCH 2014
16
PS 736
MAR 14
17
PS 736
MAR 14
t
he pivot pins and lift arms on your wheel loader’s bucket need lots of lube to do
their job.
Without lube, the bucket will
begin squeaking while it’s being
raised or lowered. You’ll know the
problem’s getting really bad when
the bucket starts moving erratically
during construction operations.
The bucket’s bank of grease Fttings
is located on the driver’s side of the
vehicle at ground level. Every week,
give all of the Fttings three to Fve
pumps of GAA.
k
eep thoughts of smooth rolling in mind when it’s time to lube the guide rollers
behind the 621B scraper’s bowl.
The top and bottom guide rollers behind the scraper’s bowl are out of view
because of their location. Each roller moves back-and-forth when the bowl is loaded
or emptied. Without lube, individual rollers lock up and drag along their guide track.
The end result is a lot of wear-and-tear to the roller, bowl and ejector.
Keep that from happening to
your scraper by lubing the grease
Fttings on the bottom rollers with
GAA during scheduled services.
But when you’re ready to lube
the top guide rollers, you’ll notice
there are no grease Fttings. That
means once a year you’ll have to
remove the access cap to get inside.
Use a
1
/
2
-in socket wrench to
remove the four cap bolts. Use a
pry bar to hold the guide rollers in
place while turning the bolts with
the wrench.
Pack the access cap and the
guide roller bearing with GAA. You
won’t Fnd this info in the scraper’s
lube order, so make a note to help
you remember next year.
966H Wheel Loader…
lube
the BuCket Weekly
621B Scraper…
lube
K
E
E
P
S R
O
L
L
E
R
S
R
O
L
L
I
N
G
Give fttings 3-5 pumps oF grease
if a fitting is clogged
and won’t take grease,
report it.
Your mechanic
will install a new fitting,
NSN 4
7
30-00-050-4208,
in its place.
YEe-
OW!
what
is
that?!
Use
1
/
2-inch
socket wrench to
remove cap bolts
Pack roller
bearing
with GAA
hey, pal,
without
me,
you’re a
real
drag!
maybe
you should
mention
tHAT to my
operator.
uHh…that
would be
me.
736 16-17.indd
1-2
1/28/14
2:48 PM
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