Single-Circuit Brake Booster (27.7)

TM 5-2420-224-20-1

AIR SYSTEM (CONT)

Single-Circuit Brake Booster (27.7)

Full br ak e boos ting eff ec t s tage I and II.

Reduced brake boosting effect stage I.

Task

Boos ting the h ydr aul ic br ak e pr es s ur e with

autom atic switchover to reduced boosting

eff ec t f or trailer operation.

T he s witc hover tak es plac e b y m eans of the

supply pressure to the trailer wh ich cuts out

the outer r ing c ham ber in the br ak e boos ter

via the 3/2-way valve (33.1).

Technical Data

Operating pressure

116 PSI/bar 8.0

max.

Response pressure

6 PSI/bar 0.4

approx.

Pis ton s tr ok e

mm 37

Piston diam eter

mm 150

Connections mm

M 18 x 1.5

Change 1

1-16.15