CHAPTER4
SCHEDULED MAINTENANCE
4-1 INTRODUCTION.
The Pakhammer requires little maintenance to
ensure optimum performance. This chapter provides
preventative maintenance procedures.
4-2 MAINTENANCE PLAN.
Preventative maintenance of the Pakhammer is
accomplished in accordance with the Pakhammer
maintenance schedule, table 4-1.
4-3 GENERAL MAINTENANCE.
4-3.1 GENERAL.
General maintenance shall be performed as detailed
in this chapter using the maintenance schedule in
table 4-1. This chapter will provide the step-by-step
procedures that are necessary to verify that the
Pakhammer is operating satisfactorily.
4-3.2 SURFACE CLEANING.
a. Keep
the
exterior
of
the
Pakhammer
clean
of
all dirt and grit accumulations. Wipe exterior
surfaces with a lint-free cotton machinery
wiping towel lightly dampened with clean
water. Then dry the surfaces thoroughly with
clean, dry, lint-free cotton machinery wiping
towels or low pressure compressed air.
Compressed air may be used for cleaning
in less accessible areas.
b. If the Pakhammer has been operating in a
dusty,
abrasive environment or an
environment when the tool retainer assembly
is subjected to a damp or wet material,
immerse the Pakhammer vertically with the
tool retainer assembly facing down into a
container of dry cleaning solvent (specification
P-D-680, Safety or Stoddard's Solvent) and
agitate the Pakhammer up and down in order
to clean all debris out of the tool retainer
assembly. When clean, apply a thin coating
of Marvel ®, Air Tool Oil, Turtle Wax, P.O. Box
247, Westmont, IL 60559-0247 (Paratech PN
550291) to the tool retainer assembly, pulling
the release ring back and forth while applying
the lubricant in order to assure lubrication of
the spring and balls.
4-3.3 INSPECTION.
a. Do not paint any components of the
Pakhammer. Check for loose hardware and
cracked or deformed parts. Check for o-ring
seal leakage in a static (non-operating) and
dynamic (during operation) condition.
b. During operation, verify oil mist is present in
the air coming out of the valve body exhaust
ports. Also check for air leakage at juncture of
handle and cylinder, handle and shuttle valve
assembly, and shuttle valve assembly and
cylinder. Any leakage of air or oil at these
mating interfaces denotes either a loose
connection (tighten hardware) or a defective
o-ring seal that necessitates replacement.
Table 4-1. Maintenance Schedule
Frequency
Maintenance Requirement
Applicable
Paragraph
During Use
After use
Check for stalling and loss of power. Verify oil mist is present in the exhaust
air. Check for air leakage at junction of handle and cylinder, handle and
shuttle valve assembly, and shuttle valve assembly and cylinder.
Clean all dust, dirt, and other debris from Pakhammer, verify all fasteners are
secure, lubricate the tool retainer assembly and fill the oiler.
4-3.3
4-3.2, 4-3.3
4-1/(4-2 blank)
