TM
55-4920-244-14
a. Removal.
(3) Remove pivot sockets (27) from
handle (31).
(1) Remove probe storage compart-
ment.
Disassembly is accom-
b. Disassembly.
(2) Remove handle assembly.
plished by removal.
(3) Remove voltage regulator (para.
c. Cleaning. Clean all components with
(4) Remove cable and printed cir-
dry cleaning solvent (item 1, table 1-1).
cuit board assembly, part number BH1766 (para.
d. Inspection and Repair.
(1) Inspect all painted surfaces for
b. Disassembly.
(1) Unfasten fastener (17) and re-
general condition.
move hinge pin (15). Remove door (16). Re-
(2) Inspect handle for misalignment,
move snap ring (18), grommet (19), and fas-
elongated mounting holes, dents, and scoring.
tener (17) from door.
(3) Inspect pivot socket mating parts
for broken or excessively worn teeth.
(2) Remove spring (20), locknut
(22), and screw (21) from bottom lip of com-
(4) Inspect attaching hardware for
partment.
thread damage, elongated mounting holes, and
overall condition.
(3) Provide several thicknesses of
cloth or packing and invert base assembly (31)
(5) Misalignment of handle can be
to gain access to components on bottom.
corrected with a suitable press. Inspect curved
(4) Remove locknuts (25), screws
portions of handle carefully after alignment is
(24), and support post (23).
corrected for cracks, kinking, or other signs of
(5) Remove retaining rings (27) and
weakening. Replace handle if these conditions
slide wheels (26) off axle of wheel mount
exist.
(28).
(6) Dents and scoring are permissi-
(6) Remove locknuts (30), screws
ble provided overall rigidity is not affected.
(29), and wheel mounts (28).
Burnish off any burrs or rough spots.
c. Cleaning. Clean all parts of base as-
(7) Elongation of all mounting holes
sembly with dry cleaning solvent (item 1, table
is permissible providing longest dimension of
1-1).
elongation does not exceed diameter of bolt by
d. Inspection and Repair.
approximately one-third.
(1) Inspect interior and exterior of
(8) Replace complete pivot socket
base assembly for dents, misalignment, condi-
assembly if either part has broken teeth or if
tion of paint, and corrosion.
wear allows slippage when assembled and wing
(2) Inspect hinge pin for corrosion,
nuts are hand tight.
deep scoring, and damage. Replace if defective.
(9) Remove any corrosion and scratch-
(3) Inspect all attaching hardware
ed, peeling, or deteriorated paint with a suitable
for shearing, stripped threads, and corrosion.
abrasive such as abrasive paper, (item 3, table
(4) Inspect support posts and wheel
1-1). Coat exposed surfaces with zinc chromate
mounts for excessive wear, misalignment, scor-
primer, (item 4, table 1-1), and allow to dry. Re-
ing, and corrosion.
paint in accordance with TM 43-0139.
(5) Inspect wheels for misalign-
ment. Inspect tires for cuts, gouges, and cracks
4-31. Base Assembly (Figure 3-1).
or other signs of deterioration.
The base assembly provides rolling sup-
(6) Dents in base assembly are per-
port and a cable storage compartment for the
missible providing they do not affect its align-
tester. Wheels and a support post on the bottom
ment, rigidity, or utility. Restore alignment and
of the base assembly are provided for ease in
remove dents with an arbor press or other suit-
transporting the tester to operating locations.
able equipment.
The base assembly is sectionalized to provide an
(7) Remove corrosion and scratched,
upper compartment containing electronic compo-
peeling, or deteriorated paint with a suitable
nents and a lower compartment used for cable
abrasive such as abrasive paper (item 3, table
storage. A hinged door is provided in the base
1-2). Coat exposed surfaces to be painted with
assembly for access to the cable storage compart-
zinc chromate primer (item 4, table 1-2), and
ment.
allow to dry. Repaint in accordance with TM 43-
Change 4
4-28
