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 TM 55-1925-204-12
(1) Lubricate in accordance with LO 55-1925-204-12-
(c) Remove cover and disconnect electrical
4.
connections to switch; mark for reinstallation.
(2) Inspect brushes. Replace brushes worn to one-
(d) Remove mounting nuts from recesses in switch
half normal length.
Sand new brushes to contour of
assembly housing.
commutator.
(e) Installation is in reverse order of removal. Check
(3) Check brush spring tension. Adjust tension to 1
air connections for leaks after pressure switch installation.
3/4 to 2 1/2 psi of contact surface.
(3) Pressure switch adjustment.
(4) See that brushes move freely in holders.
(a) Turn adjusting screw clockwise to raise the
(5) Keep commutator clean.
pressure.
b. Removal.
(b) Turn adjusting screw counterclockwise to
(1) Disconnect external wiring from motor connection
lower the pressure.
box, and mark for reassembly.
NOTE
(2) Loosen mounting bolts and remove drive belts
Moving pressure switch adjustment up or
from motor pulley.
down changes the differential between ON
(3) Remove mounting bolts, and lift motor from
and OFF. Select the mean average nearest
foundation.
the desired setting.
c. Disassembly. The disassembly of this motor is the
same as that discussed in paragraph 5-34.
5-57. Air Tanks and Lines
d. Clean and Inspection. The cleaning and inspection of
a. General. The starting air tanks (reservoirs) in the
the motor is the same as that discussed in paragraph 5-34.
forward end of the engine room are air-fed directly from the air
e. Assembly. The assembly of this motor is the same as
compressors. The air tanks in addition to providing starting
that discussed in paragraph 5-34.
air for the engine also serve as general usage air storage
f. Installation.
reservoirs.
(1) Position motor on foundation (fig. 5-102).
b. Maintenance and Adjustment.
(2) Install mounting bolts; do not tighten.
(1) Air (reservoirs) tanks and piping system must be
(3) Install drive belts on pulleys.
leak free at all times or the compressor will run unnecessarily.
(4) Check pulley alignment with a straightedge.
(2) To check for leaks, brush a soapy water solution
(5) Adjust belt tension by positioning motor on slotted
on suspected areas and leaks will be indicated by soapy
foundation.
bubbles. This method will detect even the smallest leaks.
(6) Tighten mounting bolts.
(3) Leaks in threads of pipe can be repaired by
(7) Connect electrical wiring to motor connection box.
detaching fitting, removing all the old white lead from threads,
applying fresh white lead, and retightening fittings.
5-59. Controllers
(4) Report any leaks in air storage tanks to higher
The maintenance on controller is the same as discussed in
maintenance level immediately upon detection.
5-58. Motor
a. Maintenance and Adjustment.
Section IV. ANCHOR WINDLASS-CAPSTAN SYSTEM
5-60. General
5-61. Anchor Windlass (Markey Type VEV-16)
a. Anchor Windlass (MARKEY TYPE VEV-16 ). The
a. Maintenance and Hand Brake Adjustment.
anchor windlass is fully described, and operating procedures
(1) Lubricate in accordance with LO 55-1925-204-12-
are outlined in paragraph 2-22.
7.
b. Capstan. The capstan is described and the operating
(2) Adjust the hand brake for lining wear as follows:
procedures are outlined in paragraph 2-23.
(a) Back the two inner adjusting nuts (fig. 5-103) away
from the boss.
5-141
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