TM-5-5420-202-20-4

M60A1 CHASSIS, TRANSPORTING; FOR BRIDGE, ARMORED-VEHICLE-LAUNCHED; SCISSORING TYPE, CLASS 60

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE MANUAL; VOLUME 4 OF 4

OCTOBER 1985

TM-5-5420-202-20-4 - Page 444 of 534

TM 5-5420-202-20-4

GENERAL MAINTENANCE (Sheet 27 of 33)

Safety Wiring Procedures (Sheet 1 of 2)

NOTE

The double-twist method of safety wiring is used as th e

common method of safety wiring. Use the double-twist method

for screws m closed geometric patterns which secure hydraulic

or air seals, hold hydraulic pressure, or are used m critical

areas of clutch mechanisms.

NOTE

When safety wiring widely spaced multiple groups (fastenings

from 4 to 60 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.

NOTE

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 m 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.

NOTE

Use copper wire only for securing emergency devices and install

so that it can be easily broken when required.

G

O

on to Sheet 2

C-28