Section VII. RADIO INTERFERENCE SUPPRESSION

TM 10-3930-630-12

Section VII. RADIO INTERFERENCE SUPPRESSION

4-19.

General Methods to Obtain Proper

Suppression

(1) Leads to instrument panel

Essentially, suppression is obtained by providing

(2) Battery ground wire.

a low resistance path to ground for stray currents The

methods used include grounding the frame with ground

Spark plugs are the resistor type.

straps and installing internal or external teeth

d. Spark plug and ignition coil leads and cable

lockwashers in critical mounting areas.

are nonmetallic conductor type.

4-20. Interference Suppression Components

4-21.

Replacement

Suppression

Components

a. A ground strap is connected between the

instrument panel and frame.

b. The following ground and mounting parts

Since no major components such as capacitors

utilize internal-external teeth lockwashers to provide

or resistors are installed to provide radio suppression,

positive grounding.

removal of the components is not required. In

normal

removal and disassembly procedures the lockwashers

will be removed and be labeled as suppression

components at that time.

Section VIII. OVERHEAD GUARD

4-22. General

(2) Remove screws (1 and 2, fig. 4-2), nuts,

The overhead guard is incorporated in the truck

lockwashers (3), washers (4) and nuts (5).

to provide protection for the operator. The guard is

mounted to the frame at the four corners.

(3) Carefully lift overhead guard (6) from truck,

using hoist.

4-23.

Overhead Guard

Installation.

Removal

(1) Lift overhead guard (6, fig. 4-2) into position

(1) Attach a suitable hoist to the overhead

on truck.

guard and raise hoist to relieve tension on mounting

screws.

(2) Secure overhead guard to truck with screws

(1 and 2), lockwashers (3), washers (4) and nuts (5).

(3) Detach hoist from guard.

4-10