PS Magazine - TB 43-PS-626

PS, The Preventative Maintenance Monthly

ISSUE 626

JANUARY 2005
PS Magazine - TB 43-PS-626 - Page 5 of 30
The wiper seal on the suspension cylinder is supposed to keep the cylinder sur-
face clean and prevent dirt from scoring the oil seal at the top of the cylinder.
Problem is, field conditions can loosen the seal, so it does no good at all.
Eyeball the cylinders on each
bogie. If the wiper seal is not
securely in place at the bottom
of the cylinder, look at it closely.
If it’s not damaged, clean it with
dry cleaning solvent.
Then coat the outer metal
shell with sealing compound,
the ring back into place in the
groove of the packing nut.
PS 626
JAN 05
6
M1000 HET Semitrailer…
M
echanics, with 10 bogies to maintain, the last things you need are chewed up
brake lines and suspension cylinder seals on an M1000 HET semitrailer.
But that’s what will happen if your operators don’t keep the bogie bottoms free
of crud and you don’t keep the suspension cylinder’s wiper seal in place.
Each of those 10 bogies collects lots of dirt, sand and mud during operation,
mainly because of how the bottom of the bogie is shaped. What goes in won’t come
out unless it’s removed by the operator.
The longer the gunk
stays, the more concrete-
like it becomes. And that
will flat wear out the air
brake lines.
Operators must make sure
the bogie bottoms are free of
crud after every operation.
Pressurized water gets rid of
most of it, but a little elbow
grease may be needed to get
all the gunk out from around
the air lines.
it’ll just
attract
dirt,
schweet-
heart
Don’t let
the sealing
compound
dry on the
cylinder
piston,
though.
Clean out crud from bogie bottom
after every operation
Wiper seal loose? Clean and reinstall it
trailer bogies
and pm. sounds
like the beginning
of a
beautiful
relationship.
play it
again,
bonnie!
626.06-07(C!)
11/26/04
12:05 PM
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