TM-5-5420-228-24

LAUNCHER HYDRAULICS SYSTEM M48A5/M60A1 TANK CHASSIS, TRANSPORTING: FOR BRIDGE, ARMORED-VEHICLE-LAUNCHED; SCISSORING TYPE, CLASS 60

TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT; MAINTENANCE MANUAL

AUGUST 1985

TM-5-5420-228-24 - Page 722 of 750

TM 5-5420-228-24

GENERAL MAINTENANCE - Continued

Safety Wiring Procedures (Sheet 1 of 2)

NOTE

●

The double-twist method of safety wiring is used as the

common method of safety wiring. Use the double-twist

method for screws in closed geometric patterns which secure

hydraulic or air seals, hold hydraulic pressure, or are used in

critical areas of clutch mechanisms.

●

When safety wiring widely spaced multiple groups (fastenings

from 4 to 6 inches apart) by the double-twist method, three

units are the maximum number that may be wired in series,

When safety wiring multiple groups, the maximum number of

units that may be safety wired is limited to the number that

can be wired with a 24 inch length of wire.

●

The single-wire method is used in a closely spaced (maximum

of 2 inches between centers), closed geometric pattern

(triangle, square, rectangle, circle, etc.) on parts in electrical

systems and in similar places that would make the single-wire

method more feasible. Use the single wire method for shear

and seal wiring applications.

●

Use copper wire only for securing emergency devices and

install so that it can be easily broken when required.

Go on to Sheet 2

C-28