Table 3-2. Operator/Crew Preventive Maintenance Checks and Services - continued

Table 3-2. Operator/Crew Preventive Maintenance Checks and Services - continued - TM-9-4940-421-140021

Table 3-2. Operator/Crew Preventive Maintenance Checks and Services - continued - TM-9-4940-421-140023

TM-9-4940-421-14 Shop Equipment Contact Maintenance Truck Mounted (Southwest Model SECM) Serial No. Range SECM 1001 Thru SECM 2532 Manual
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TM 9-4940-421-14

Table 3-2. Operator/Crew Preventive Maintenance Checks and Services (cent)

LOCATION

NOT FULLY MISSION

ITEM TO

PROCEDURE

INTERVAL

CAPABLE IF:

CHECK/SERVICE

Drain cock is inopera-

Momentarily open drain cock at air

Air Receiver Tank

Before oper-

tive.

receiver tank (p. 23) to drain any ac-

ation, but not

cumulated moisture. Notify organiza-

less frequent-

tional maintenance if drain cock is in-

ly than week-

operative.

ly.

Pop-off valve is inop-

Actuate pop-off valve to check that it

Before oper- Pop-off valve

erative.

is operating properly. Notify organi-

ation, but not

zational maintenance of improper

less frequent-

ly than week-

NOTE

While START is engaged

observe BATTERY AMME-

TER (14).

Engine will not start or

During oper- Arc Welding

STARTING ENGINE. Strut and

warm up engine (p. 2-4). Observe ex-

ation but not Machine Engine

requires long and/or re-

haust. Listen for unusual noises.

peated starting, or if

less frequent-

Notify organizational maintenance of

there is visible exhaust

ly than week-

smoke after warm-up,

hard starting, exhaust smoke after

or if BATTERY AM-

startup, unusual noises, or engine cut-

METER does not indi-

out due to overheating.

cate discharging when

START is engaged, or if

there are unusual noises

coming from the engine,

or if engine is overheat-

ing.

Change 1

3-2.5

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