TM 3-4310-100-20 & P
(a) Remove the appropriate end of the
(d) Attach the first stage filter assembly
waist strap (b above).
to the crankcase strainer head with the four screws and
(b) Unbuckle the strap from the harness
washers.
b. Crankcase strainer Assembly.
holder (fig. 2-6) and attaching hardware.
(1) Removal.
(2) Cleaning and Inspection.
(a) Inspect the fabric for dirt, tears, rips,
(a) Unscrew the strainer retainer from
or other indications of wear and damage which would
the crankcase.
(b) Remove the preformed packing,
tender the item inadequate for use.
(b) Check buckle, snap fasteners and
spring and strainer from the crankcase.
swivel assembly for corrosion, wear, and other damage.
(2) Cleaning and Inspection.
(c) Inspect the shoulder bolt and locknut
(a) Clean all parts with stoddard solvent
for damage or wear.
and air-dry.
(d) Replace the items considered unsafe
(b) Inspect all parts for damage or
for use.
deformation. Make sure the strainer is not clogged.
(e) Wash the strap in warm soapy water
(3) Installation.
(a) Place the strainer into the crankcase
and air-dry.
hole.
(3) Installation. Install the components in the
(b) Position the spring into the strainer.
reverse order of removal in (1) above.
(c) Position preformed packing onto the
strainer retainer and install the strainer retainer into the
2-16.
Compressor Unit Model AN-M4 (only)
crankcase.
Organizational maintenance personnel are authorized to
replace the first stage filter assembly and the crankcase
strainer assembly.
2-17.
Compressor Units, Models AN-M4B and
a. First stage Filter Assembly.
AN -M4C
(1) Removal.
Organizational maintenance personnel are authorized
(a) Remove the four screws (fig. 2-3)
to replace the air intake filter, oil breather assembly and
and washers securing the first stage filter assembly to
drain plug.
the crankcase assembly head.
a. Air Intake Filter. The air intake filter is located
(b) Remove the protective cap, cap,
on top of the first stage cylinder head and consists of one
preformed packing, and filter.
inner and one outer filter cover, and one inner and one
(2) Cleaning and Inspection.
outer filter element. The filter elements filter incoming air
(a) Clean all parts with stoddard solvent
to the compressor )before air enters the first stage
and air-dry.
cylinders.
(b) Inspect all parts for damage or
(1) Removal.
(a) Unbuckle four securing straps and
deformation.
(3) Installation.
remove the canvas cover (fig. 2-5).
(a) Place the filter on top of the
(b) Remove the outer filter cover (fig. 2-
crankcase assembly head.
(b) Position preformed packing on the
counterclockwise to disengage the securing slots from the
cap and place the cap on the filter.
cylinder head.
(c) Position the protective cap over the
cap and align the screw holes of both caps with the holes
in the crankcase head.
2-12
