TM
55-1730-229-34
AG
320A0-MME-000
TO
35C2-3-473-2
TM
1730-34/1
Direct/General Support Troubleshooting (continued)
Table 2-2.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
AGPU DRIVES IN REVERSE DIRECTION (continued)
36.
If voltage is not present, the forward switch S1 in the
b.
speed/direction control assembly, or the wire between switch
and TB4-6 is defective. Disconnect battery. Check wiring
and repair if defective. If wiring is good, check forward
switch S1, and replace if defective. If voltage is still not
present, replace speed/direction control assembly (TM 55-
1730-229-12, paragraph 4-118).
Set power switches off and disconnect battery. Check wires between
Step 2.
TB4-6 and relay 2K1, G18A20N between relays 2K1 and 2K2, and cable
G13A2 on relay 2K1.
Replace any defective wires or cables.
a.
If all cables and wires are good, replace relay 2K1.
b.
(TM 55-1730-229-12, paragraph 4-116).
AGPU DRIVES IN BOTH DIRECTIONS BUT MOTION IS JERKY.
37
Set power switches off and disconnect battery. Test diodes TB2-CR1 and CR2
(see TM 55-1730-229-12, table 4-2, malfunction 82).
Replace defective diodes.
a.
If diodes are good, check wire between diodes and ground
b.
(figure FO-8).
Section III.
GENERAL MAINTENANCE
2-4. GENERAL MAINTENANCE. This sec-
components can be accomplished with soap
tion provides or references non-standard
and water, followed by a fresh water
maintenance procedures for repairs that
rinse and wipe down with clean cloths.
would otherwise be repeated several
Stubborn grease and grime may require
times throughout the chapters.
Clean
cleaning with solvent P-D-680.
electrical components by vacuuming and/
2-5. GENERAL MAINTENANCE,
FRAME AND
or wiping with a cloth dampened with
HOUSING.
isopropyl alcohol.
b. Welding. The frame and housing
a. Cleaning. Cleaning of
the
frame and housing, and propulsion system
is constructed of 1010/20 steel; weld
2-24
