REPAIR. The following paragraphs contain
maintenance instructions for the air compressor unit.
These instructions will enable maintenance personnel to
repair or replace defective parts, allowing the air
compressor unit to meet new equipment standards of
operation. Instructions are included for the disassembly,
cleaning, inspection, repair or replacement, assembly of
detailed parts into subassemblies, subassemblies into
assemblies, and final assembly of assemblies to form a
complete air compressor unit.
After performing any repair upon the air
compressor unit, refer to TEST (Section
VI) and test air compressor unit to
ensure proper operation.
Preliminary Procedures. In general it is not
necessary to completely disassemble the air compressor
unit as illustrated in Figure 1 (Section VIII). Operational
checkout and troubleshooting will indicate the required
degree of disassembly necessary and assemblies which
require repair or replacement. Prior to complete
disassembly of the air compressor unit, the following
step-by-step procedures shall be completed as follows:
Never attempt to disassemble any part
of the air compressor unit without first
having relieved all air pressure from the
On control panel, open the service valve,
dehydrator bleed valve, mechanical filter drain valve and
the service hose bleed valve.
Remove battery cables from battery (3,
Remove two wing nuts (1), J-bolts (5)
and battery retainer (2) from frame. Remove battery (3)
from compressor unit and store in a heated area.
battery retainer and wing nuts.
Place a container under engine oil drain,
and drain lubricating oil from engine.
Place a container under compressor oil
drain, remove oil drain plug and drain lubricating oil from
compressor. Install drain plug.
Place compressor unit on suitable work
stands, place a container under fuel tank drain, loosen
filter filler cap (21. Figure 8-37). Remove drain plug (22)
from fuel tank and drain fuel. After fuel has drained
from tank, install drain plug.
Remove oil container from engine air filter
(23, Figure 8-30) and drain oil from container. Replace
AIR COMPRESSOR UNIT. The following
paragraphs contain disassembly, cleaning, inspection,
repair or replacement, and assembly instructions for the
air compressor unit. General shop practice standards for
maintenance and overhaul shall be followed on all
assemblies. General cleaning, inspection, and repair or
replacement is as follows:
Provide adequate ventilation when using
cleaning solvent (Federal Specification
P-D680, Type II). Avoid prolonged
breathing of vapors and minimize skin
Specification P-D-680, Type II shall not
be used to clean any parts of the trap
specified herein. These solvents may
Specification P-D-680, Type II shall be
accomplished in accordance with local
Consult local bioenvironmental engineer
for guidance. In no instance should
contaminate streams or lakes. They
may be disposed of by evaporation or
burning under supervision.
Do not allow parts to remain in cleaning
solvent for extended periods of time or
rust spots may form. If parts are not to
be inspected immediately after cleaning,
dip them in engine oil per Military
Specification MI.-l.2104C or equivalent.
Do not immerse electrical parts in