TM-9-2320-279-20-1

M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; ORGANIZATIONAL MAINTENANCE, VOLUME 1 OF 3

TM-9-2320-279-20-1 - Page 418 of 985

TM 9-2320-279-20-1

Maintenance Procedures (Cent)

~ 2-28.

RADIO INTERFERENCE SUPPRESSION (CONT). [

CHECK

CHECK GROUND

BLOWER

WIRE CONNECTION

TA356999

b.

Suppression in the M977 series vehicles is accomplished by grounding straps, tooth-type washers,

shielded cables, and shielded crane electrical components. Use these suppression devices when necessary

to join critical parts, forming a complete electrical circuit, for conducting radio interference currents

directly to vehicle ground and away from antennas.

c. Blower motor used in the cab for heating/cooling/air circulation has built-in ground straps f or

attachment. Tooth-t ype washers are used whenever an interference suppression ground connection is

made.

CHECK

CHECK CABLES

GROUND

AND CONNECTIONS

ALTERNATOR/REGULATOR

TA1646W

STARTING MOTOR

TA164&31

d.

Starting/charging system. The alternatorh-egulator has built-in interference suppressors to eliminate

brush noise. Starting motor ground strap and cables must be in good condition, not frayed or broken, and

all nuts securely tightened to ensure positive grounding. Scrape mating metal surfaces clean before

installing ground straps and cables.

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