Hyundai HL955 Manual page 328

(6) (6)
Make leakage test on brake hydraulics Make leakage test on brake hydraulics
Prior to starting the test, completely
breathe brake hydraulics.
High-pressure test : High-pressure test :
Build up testing pressure p = 100
max and close connection to HP pump by
means of a shutoff valve. A pressure drop
by max 3% (3 bar) is permissible during a
5 minute test duration.
Low-pressure test : Low-pressure test :
Reduce testing pressure to p = 5 bar and
close shut-off valve again.
No pressure drop is permitted during a 5
minute test duration!
※
Special tool
HP-pump
Straight screw-in connection
Measuring fitting (M18x1.5) 5870 950 139
Oil collector bottle
bar
-10
5870 287 007
0637 842 518
5870 286 072
3-272
7577AAXR070