©
200423
2-5
Inspection and adjustment
BRAKE SYSTEM AND COMPONENTS
ΧΦ65/75/85 series
6
5
2.4 INSPECTION AND ADJUSTMENT, FOOT BRAKE VALVE
Inspection, foot brake valve
1.
Connect a pressure gauge to a brake
chamber of the front axle (in front of the
empty/load valve, if present).
2.
Connect a pressure gauge in front of the load
sensing valve.
3.
Pressurise the system.
4.
Depress the brake pedal a few times,
alternately quickly and slowly, until the end
stop is reached. Check if there is a
discrepancy between both gauge readings
(discrepancy maximum 0.3 bar).
5.
When the brake pedal is gradually
depressed, both circuits should not show
larger pressure increases than 0.3 bar.
6.
When the foot brake valve is completely
depressed, both gauges should indicate the
reservoir pressure.
7.
When the brake pedal is not depressed,
the pressure gauges should not indicate any
pressure.
Adjusting the foot brake valve
1.
Check whether the brake pedal can be fully
depressed. When fully depressed, the pedal
should not touch the floor mat. This is
especially important if circuit 1 were to fail.
More pedal travel will then be needed
to achieve full pressure at circuit 2.
2.
The stop bolt should be adjusted in such
a manner that there is noticeable play
between bolt and pedal.
21
22
12
A
B
D
C
10
9
7
8
6
5
4
3
2
1
11
R600748
Fig.2