Table 4-6. Troubleshooting Electromagnetic Clutch Assembly
(Power Take-off Group)
Malfunction
Probable cause
Corrective action
Electro Magnetic Clutch Assembly
a)
Defective power
Repair/replace defective power
inoperative
takeoff transmission
take-off assembly.
assembly (see table 3-6),
b)
Defective sprocket
Repair/ replace defective sprocket
assembly.
assembly.
c)
Defective sprocket
Replace defective sprocket ring
ring assembly.
ring assembly.
Table 4-7. Troubleshooting Power Take-Off Transmission Assembly
Malfunction
Probable cause
Corrective action
Power Take-Off Transmission
a)
Power take-off
Repair/ replace defective right
Assembly inoperative
right drive assembly
drive assembly.
defective.
b)
Hydraulic pump
Repair/ replace defective hydraulic
assembly defective.
pump assembly.
c)
Magnetic clutch
Repair/replace defective clutch
defective.
assembly.
Section V. General Maintenance Instructions
repair or rebuild operations, apply a light grade of
4-19. General.
preservative oil to all polished metal surfaces to prevent
4-20. This section provides general maintenance
rusting.
instructions for direct support, general support and depot
(a) Dip-tank. Disassemble as required,
maintenance personnel to maintain and various
place parts in a perforated metal basket, and submerge
bulldozer components.
and agitate parts in a tank containing dry-cleaning
4-21. Cleaning.
solvent or mineral spirits paint thinner. Repeat, using a
4-22. All component pan of the various assemblies
second tank containing clean solvent or paint thinner.
must be cleaned after disassembly. Make certain the
Extent of treatment in each tank will depend on time
work bench is free d foreign matter. Place a large piece
needed to dissolve dirt, oil, and grease.
of heavy wrapping paper on the work bench to insure
(b) Vapor-degreaser. Tanks containing a
cleanliness. This precaution will protect the highly
heated solution of trichloroethylene or perchlorothylene
finished surfaces and reduce the danger of misplacing
(type 11) are used mostly for degreasing items that are
small parts. During disassembly and assembly avoid
very greasy or oily and are not readily cleaned by the
striking highly finished surfaces together.
General
dip-tank method. Place parts in a perforated metal b-'et
inspection and cleaning instructions for operator and
and submerge just below the vapors in the tank and
organizational personnel are contained in paragraphs 3-
keep there until all the grease or oil melts and runs off
the parts
depot maintenance observe the following cleaning
Warning: Personnel operating vapor-degreasers
procedures.
are cautioned not to inhale the vapor fumes.
a. Mechanical Parts.
(1) Cleaning methods. Material received
in Ordnance shops from storage will be cleaned by one
of the following methods, whichever is applicable and
available. If some time is to elapse before the start of
4-5
