CARE AND MAINTENANCE 7
MHL360 E 7.3
7.1.3 Discharging residual pressure in
the hydraulic circuit
Danger of injury due to residual
energy
• When performing maintenance
and repair work on the hydraulic
system, the residual pressure in
the hydraulic circuit must be dis-
charged.
• Before performing this task, the
loading equipment must be safely
lowered to the ground.
In an emergency: Administer first
aid, seek treatment from a doctor
The ignition must be switched on (ignition key
(246/29) in position I). The left armrest (246/4)
must be folded down and the maintenance lad-
der closed. Travel and work functions must be
enabled (control light on toggle button (246/64)
must light up). The "Travel and work functions
disabled" indicator (245/22) must not light up.
The following must be performed at least five
times to also relieve the control pressure:
1) Four-way control lever (246/3) and
(246/13): Lower loading equipment, turn
uppercarriage, open/close grab
2) Service brake pedal (246/9) (press 20
times)
3) Parking brake pushbutton (246/54)
4) Pushbutton (246/55) for swing brake
5) Accelerator pedals (246/10) and (246/11)
6) Emergency lowering (246/1) for elevating
cab
7) Lever (246/2) to extend/retract 4-point
outrigger
8) Pushbutton (246/45) and (246/47) for
grab rotation right/left
9) Button toggle (246/63) for oscillating axle
lock release
10) Slow/fast transmission control (245/4)
F
09 :43 11 .03. 2 011
MH LX X X / XXX X
18 00 U PM
0 5 1 0 15 20 2 5
95°C 7 5°C
0 ½ 1
9 %
120 0
BSB50868
22
4
Fig. 245 Discharging residual pressure
I
0
BSB51012
2
1
3
9
10
11
13
54
55
64
63
47
45
4
29
Fig. 246 Discharging residual pressure
Dischar
ging
residual
pressur
e in the
hydrauli
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