DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE INSTRUCTIONS
Section I. REPAIR PARTS, SPECIAL TOOLS AND EQUIPMENT
indicated in the MAC, Section III, Appendix B of the
2-1. Maintenance Repair Parts
Operator and Organizational Maintenance Manual, TM 5-
Repair parts and equipment are listed and illustrated in
the repair parts and special tools list covering
organizational maintenance for this equipment located in
2-3. Specially Designed Tools and Equipment
No specially designed tools or equipment are required by
Direct and General Support Maintenance personnel for
2-2. Special Tools
performing maintenance on this hammer.
The only special tool required by Direct and General
Support Maintenance personnel for performing
maintenance on this hammer is the Ram Lifting tool as
Section II. TROUBLESHOOTING
Each trouble symptom stated is followed by a list of
probable causes of trouble.
The possible remedy
This section provides information useful in diagnosing
recommended is described opposite the probable cause.
and correcting unsatisfactory operation or failure of the
hammer or any of its components.
1. Hammer hard to start or fails
Worn compression rings.
Replace compression rings.
2. Hammer lacks power.
a. Worn compression rings.
a. Replace compression rings. (para.
b. Worn vibration damper.
c. Scored walls in cylinder.
Section III. GENERAL MAINTENANCE
b. Fuel and Oil Tanks. Cleaning of these tanks is
2-5. Repair Instructions
important to prolonged life of the filters and pumps. After
a. Cylinder. When the hammer has been used
cleaning these tanks should be checked for leaks. Plug
extensively, cracks may develop in the welds and
all openings and pump air pressure (approx. 80 P.S.I.)
structural parts of the cylinder. These cracks should be
into the tanks. Observe for pressure drop. If leaks are
rewelded to prolong the life of the hammer. However,
detected, repair by best available means.
discretion should be used in repair welding. When
welding is to be done where members connect to the
c. General. Before reassembly of the hammer or
tubular portion of the cylinder, the welding should be
its components, care should be taken to insure that all
done gradually so the heat build-up will not be excessive.
parts are clean and the assembly instructions are
Excessive heat will distort the cylinder bore and render
followed as outlined in the manual.
the cylinder unusable.