' MANI.TOWOC ENGINEERING
• diuision of The MardJowoc Company, Inc.
DRUM CLUTCH MAINTENANCE
"'
GENERAL INFORMATION:
The following procedure:offers a syste-
matic maintenance programfor the efficient
operation of clutches. Adherence'to the
following procedures will aid in the re-
ductlon of costlydowntlme.
NOTE
:
,... -
Forspeclflc adjustmentprocedures,
speci-
fications,
etc., refer to the appropriate
adjustment folio or shop manual.
CAUTION: .....
LOWER WEIGHT BALL AND LOAD BLOCK TO GROUND
BEFORE WORKING ON CLUTCHES OR HARM TO
PEP.SOm~ .MAY
RESULT;
A.
CHECK LINKAGE:.
i :
I. All pins shouid be free and lubricated.
2i: Levers, rods, etc., should not be bent
or distorted.
3. With clutch operating, observe for
lost motlon due to wear. Also check
for obstructions or interference from
other components. •
B. CHECK BAND SHAPE AND LINING CONDITION
WITHCLUTCHDISENGAGED:
I. Clearance between clutch bands •
and
'
• gUides should be as statedinadJust-
•ment folio. There should be no sharp
bends or tight points.
.
3.
Watch band and linkage members -
especially at end connections -for
cracks.
Inspect band and linings for presence
of grease, oil, or other contaminants.
If contamination is presentfind
source
and remedy. Removeb~d for
inspection and cleaning. Replace
lining if necessary.
CO.
Manitowoc, Wisconsin 54220
ALLMODELS
4. Makesure lining is held tight to
clutch band if riveted or bolted.
Never use worn and new linings on same
band.
NOTE:
Manitowoc "Original Equipment" linings are
chosen with extreme care. Performance
tests under controlled conditions are com-
bined with years, of field experience be-
fore a given formula Of lining is accepted
for use.
WARNING:
i
Substitution of other linings whichare
claimed to be "Jus t as good" could be a
risky undertaking:and couldresult in a
droppedload.
5, Before operation, machines parked in a
highly humid climate should be checked
to make certain that clutch band lining
is not rusted to the drum. If this
condition is found the clutch lining
should be removed and throughly cleaned
or replaced. The drum flange should
also be cleaned t0 remove all signs of
rust.
6. Check to make Certain clutch lining is
not glazed. If glazing is present the
lining should be repaired or replaced.
7. Extraclutch bands should be stored
properly to avoid damage or the loss
of proper shape.
C. CHECK AIR COMPONENTS FOR PROPER OPERATION
'(~IERE'APPLiCABLE)
' .........
!. Check air lines for abrasion, swelling,
or kinking. Use soapsuds to check for
leaks.
2.
Check
for slow or Jerky piston rod
movement on cylinder. Check piston cup
for leakage and proper lubrication.
3. Check for poor clutch release. Check
linkage and lubrication of air cylin-
der.
2-3-78
I
D~t~l CL~CH MAI~rrENANCE
FOLIO 935-I
395143
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