TM 3-6665-302-34
NOTE:
DESIGNATES PART OF
M74 TEST SET.
M U3 9 7 9 2 4
5 Screws
3 Electrical connector
1 Head assembly
6 Vertical shaft
4 Jig assembly
2 Ports
(4) Position voltage regulator (6) on pump
(4) Unsolder
red and green wires from ter-
unit subassembly (29) with mounting holes
minals.
alined with holes in top of pump unit subassem-
(5) Unsolder violet wire from terminal lug
bly (29).
on motor (7).
(5) Secure voltage regulator (6) to pump
(6) Remove two screws (5) from electrical
unit subassembly (29) with screws (3) and
connector 1A2A1P1.
lockwashers (4).
(7) Remove voltage regulator (6) from
(6) Install pump assembly in detector unit
pump unit subassembly (29).
assembly (para 3-25).
b. Installation.
3-33. Catches
(1) Insert violet lead from electrical con-
nector A1P1 through access hole in top of pump
unit subassembly (29). Solder lead to lug on
a. Removal.
motor (7).
(1) Raise latch of catch (28) and remove
(2) Install and tighten two screws (5)
screws (27).
through electrical connector A1P1 to pump unit
(2) Remove catch (28) from pump unit
subassembly (29).
subassembly (29).
(3) Using detail A as a guide, solder red
b. Installation.
and green leads from motor B1 (7) to terminals
on bottom of replacement voltage regulator (6).
(1) Position replacement catch (28), with
