d. "Excessively worn" is understood to mea worn
compound, protective grease etc.; prepare parts as
beyond serviceable limits or likely to fail, not replaced
required (oil seals, etc.); for those parts requiring
before the next scheduled inspection Excessive wear of
lubrication, apply the lubricant prescribed in the
mating parts or linkage connections usually is evidenced
lubrication order.
by too much play flash or lost motion. The term
e. Nameplates, caution plates, and instruction
"excessively worn" includes illegibility as applied to
plates made of steel rust rapidly. When they are found
markings, data and caution plates, and printed matter.
to be in a rusty condition, they should be thoroughly
cleaned and heavily coated with an application of clear
3-25. Where the instruction "tighten" appears i the
lacquer.
procedures, it means tighten with a wrench even if the
item appears to be secure.
3-29. General precautions in cleaning are as follows:
a. Dry-cleaning solvent or mineral spirits paint
thinner is flammable and should not be used near an
used in the specific procedures. It understood that
open flame. Fire extinguisher should be provided when
whenever inspection reveals the need of adjustments,
this material is used. Use only in well-ventilated places.
repairs, or replacements, the necessary action will be
b. This cleaner evaporates quickly and has a
taken.
drying effect on the skin. If used without gloves, it may
cause cracks in the skin. In some individuals, a mild
3-27.
Cleaning.
irritation or inflammation will result.
c. Avoid spilling petroleum products, such as dry-
3-28. Any special cleaning instructions require for
cleaning solvent, mineral spirits paint thinner, engine
specific mechanism or parts are contained in the
pertinent section. General cleaning instructions are as
deteriorate the rubber.
follows:
a. Use dry-cleaning solvent or mineral spirit paint
3-30.
Painting.
thinner to clean or wash grease or oil frog all parts.
b. A
solution of one part
grease-cleaning
3-31. Instructions for cleaning and for the preparation
compound to four parts of dry-cleaning solvent c mineral
of the material for painting are contained in TM 9-208-1.
spirits paint thinner may be used for dissolving grease
Methods of painting and materials to be used are
and oil from components of the bulldozer.
After
contained in TM 9213. Instructions for camouflage
cleaning, use cold water to rinse off any solution which
painting are contained in FM 5-20.
remains.
c. After the parts are cleaned, rinse and dry them
thoroughly. Apply a light grade of oil to a polished metal
surfaces to prevent rusting.
d. When authorized to install new parts remove
Section IV. TROUBLESHOOTING
routines and tables, and various supporting information.
3-32.
General.
3-34. This manual cannot cover all possible troubles
3-33. This section contains troubleshooting in
which may occur under the many operating conditions.
formation and tests for locating and correcting some of
If a specific trouble, test, and remedy is not covered,
the troubles that may develop in the equipment. The
proceed to isolate the system in which the trouble
information is arranged to provide the mechanic with a
occurs and then locate the defective component.
flexible
and
logical
step-by-step
method
of
Standard automotive theories and principles of
troubleshooting. Once f malfunction is recognized, the
operation apply in troubleshooting the equipment. Use
mechanic is guidance in solving the maintenance
all senses and methods to observe and to locate
problem by the use o troubleshooting routines or by the
troubles.
Do
not
combined us of a qualification procedure, troublehooting
3-4