TM 3-6665-209-35
1
Screw
17
Blower housing spacer
33
Flat washer
2
Lockwasher
18
Nut
34
Nut
3
Filter cap
19
Blower mounting plate
35
Rubber tube cushion
4
Orifice filter
20
Motor mount disk
36
Screw
5
Filter mounting flange
21
Setscrew
37
Lockwasher
6
Bushing
22
Motor
38
Screw
7
Elbow
23
Plastic tubing
39
Motor electrical brush
8
Adapter
24
Pump cam
40
Governor electrical brush
9
Rubber tubing
25
Pump piston
41
Governor plate
10
Valve handle
26
Pump cylinder
42
Governor assembly
11
Copper tubing
27
Fiber washer
43
Rubber tube cushion
12
Stopper
28
Screw
44
Rubber tube spacer
13
Pipe to hose straight adapter
29
Oil cup
45
Selector valve and blower adapter
14
Elbow
30
Elbow
46
Lockwasher
15
Blower housing
31
Pump mounting bracket
47
Screw
16
Impeller
32
Rubber tube spacer
Figure 6-Continued.
(2) Insert the rubber tubing (3) over each
b. Removal.
orifice and install them into their proper
(1) Remove
the
chassis
assembly
chambers of the balance orifice holder (5)
(TM 3-6665-209-12).
while keeping in mind the direction of air
(2) Pull the rubber tubing (22, fig. 4) from the
flow within the indicator.
pipe to hose straight adapter (13, fig. 6).
(3) Install both the balance orifice caps (1).
(3) Unscrew the coupling nut of the plastic
f. Installation.
tubing (23) from the elbow (30).
(1) Position the balance orifice holder over
(4) Unsolder the electrical wires leading to the
the calibrator assembly and connect the
motor at their terminal connections. There
flared tube nut (6) to the pipe to tube
are four wires to be unsoldered. Tag each
elbow that connects into the calibrator
wire to assure proper connection during
housing.
installation.
(2) Connect the flared tube nut (7) to the
(5) Remove fi ve nuts (34), flat washers (33),
coupling adapter on top of the pipe cross.
and rubber tube spacers (32 and 44)
(3) Connect the flared tube nut to the coupling
underneath the chassis base.
adapter (4).
(6) Remove four screws (36) from the motor
(4) Replace
the
chassis
assembly
base and lift the motor and blower
(TM 3-6665-209-12).
assembly off the top of the chassis base
being careful not to damage the threads
12. Motor and Pump Assembly
on the stud of the selector valve and
blower adapter (45) that extends through
a. Description. The motor and pump assembly
the chassis base.
contains the motor, gear train, pump, blower, selector
c. Installation.
valve and blower adapter, and electrical connectors. As
(1) Position the motor and pump assembly
the motor shaft rotates, the blower either supplies a
over the rubber tube cushions (35 and 43)
constant pressure, or pulls a vacuum from the
on the chassis base with the holes in the
diaphragm in the calibrator assembly, depending on the
motor base in line with the motor mounting
position of the selector valve. At the other end of the
holes in the chassis base. Make certain
5
motor, the pump is driven through a gear train housed at
the /8-inch long cushion (43) is positioned
the same end of the motor.
over the selector valve mounting hole.
AGO 8069A
13
