90-mm Thru 8-in. Support Assembly

ARMY

TM 9-6650-235-13&P

MARINE CORPS

TM-08552A-13&P

1-9.

LOCATION AND DESCRIPTION OF MAJOR

COMPONENTS (CONT).

NOTE

24-V Electrical Power Cord Adapter

Assembly is only found on early

configurations.

h. 24-V Electrical Power Cord Adapter Assembly

(1), 115-V Electrical Power Cable Assembly (2), 24-V

Slave Cord Assembly (3), and 24-V Battery Cord

Assembly (4). The black 115-V electrical power cable

assembly is used alone for 115-volt operation on all

configurations. On early configurations the black 115-V

electrical power cable assembly is used for 24 volt

operation when connected to the red, yellow, or orange

18-inch 24-V electrical power cord adapter assembly.

24-V ELECTRICAL POWER CORD ADAPTER

On later configurations the black 115-V electrical power

ASSEMBLY, 115-V ELECTRICAL POWER CABLE

cable assembly is used alone for 24-volt operation and a

ASSEMBLY, 24-V SLAVE CORD ASSEMBLY, 24-V

toggle switch on the adapter tube assembly is positioned

BATTERY CORD ASSEMBLY

for 24-volt operation. The slave cord assembly is used

to tap into vehicle power for M3 Borescope operation if

115-V electrical power is unavailable. The battery cord

assembly is used to obtain power directly from vehicle

batteries if other power outlets are not available. For

occasions when extra cord length is necessary, a

standard 115-volt, three wire grounded extension cord

may be attached to the 115-V electrical power cable

assembly provided with the borescope.

i. 90-mm Thru 8-in. Support Assembly Four

support assemblies are used to center and balance the

M3 Borescope when inspecting 90-mm thru 8-in.

cannon bores. The support assemblies are installed

over the M3 Borescope and held in place by three

setscrews. The number of support assemblies used at

any time is determined by the number of borescope

extension tubes used. Two large knurled nuts (1) are

used to adjust the support assembly to the bore size and

lock the support arms (2).

90-MM THRU 8-IN. SUPPORT ASSEMBLY

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