TM-9-2350-311-34-2

CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS HOWITZER, MEDIUM, SELF-PROPELLED, 155MM

TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL

SEPTEMBER 1994

TM-9-2350-311-34-2 - Page 392 of 552

TM 9-2350-311-34-2

ELECTRICAL CONTACT SEGMENT RING

This task covers:

Inspection and Repair

INITIAL SETUP

Tools

Metal bar (copper) (item 8, Appx B)

Artillery and turret mechanic’s tool kit

(SC 5180-95CL-A12)

References

Artillery field maintenance tool kit

TM 9-2350-311-20-2

SC 4933-95-CL-A06)

Equipment Condition

Materials/Parts

Vehicle MASTER switch to OFF (TM 9-2350-311-10)

Adhesive (item 2, Appx B)

CAB POWER switch to OFF (TM 9-2350-311-10)

Epoxy adhesive (item 3, Appx B)

Batteries disconnected (TM 9-2350-311-10)

Inspection and Repair

Personnel must wear safety glasses to avoid eye injury.

NOTE

See TM 9-2350-311-20-2 for removal and installation of electrical contact segment ring.

Vehicles with three contact arm assemblies have an electrical contact segment ring consisting

of two ring segments.

Vehicles with five contact arm assemblies have one ring segment.

Bus bars are the two wide polished metal contact strips on ring segment(s).

Be careful not to damage polished metal surfaces on contact strips.

1

Clean bus bars (1) of ring segment(s) (2) with wire brush. Clean narrow polished metal contact strips (3).

Adhesives can burn easily, can give off harmful vapors, and are harmful to skin and clothing. To

avoid injury or death, keep away from open fire and use in well-ventilated area. If adhesive gets on

skin or clothing, wash immediately with soap and water.

2

Inspect ring segment(s) (2) for cracks. Repair cracks with epoxy adhesive.

3

Inspect bus bars (1) and narrow polished metal contact strips (3) for looseness. Bond loose bus bars or nar-

row polished metal contact strips to ring segment(s) (2) with epoxy adhesive.

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