BENDIX BW1399 사용자 설명서

Shut off engine. Connect vacuum gauge at the source of

vacuum on engine which is position #2 in Figure 3. Start

engine and idle. Vacuum registered on gauge should be 

16 inches of mercury or higher. Record reading here:

_____________________" HG.

Vacuum less than 16 inches

of mercury. Repair engine or

replace vacuum pump if so

equipped, then retest 

vacuum.

Remove gauge from 

position #2 and reconnect

hose to vacuum source.

Vacuum is 16 inches of 

mercury or greater. Problem

is most likely restricted

lines/devices or excessive

leakage. Refer to Figure 3

and reinstall gauge at posi-

tions 3, 4, 5, 6 & 1 in that

order. Retest vacuum at

each position. If vacuum is

less than 16" HG at any

position, repair or replace

hose or component between

current and last gauge posi-

tion. Continue testing until

16" HG or better is noted at

position #1.

Reading is same, booster

okay.

Recovery time is acceptable.

Remove gauge and return

vehicle to service.

Reading is lower. Booster is

leaking vacuum. Repair or

replace and retest.

With engine idling make 10 rapid brake applications and

note the time required for vacuum to recover. The following

are maximum acceptable limits.

A. Vacuum system with separate vacuum reservoir; vacuum

rise to 16" HG in 30 seconds or less.

B. Vacuum system without separate vacuum reservoir; 

vacuum rise to 16" HG in 15 seconds or less.

Recovery time not 

acceptable. Check hose,

clamps, fittings. Repair 

or replace if required 

and retest.

Reconnect vacuum gauge at position #1 as illustrated in

Figure 3.

Retest vacuum system beginning with Step #1.

3. Reinstall vacuum hose at control valve of booster and tee in

vacuum gauge. Start engine and build vacuum. Read gauge

and compare to gauge reading recorded in first part of Step #2.

(Refer to Figure 4.)