Wacker Neuson 38Z3, Service Manual

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SERV-HB 38Z3 EN – Edition 2.1 * 38z3s510.fm
Actuating the boom as you drive causes the machine to leave its track!
(P1, P2 each supply a drive, and the boom function is also governed by P1 or P2)
If the boom is actuated as you drive straight ahead, the machine stays in its track, but drive
speed does not remain constant.
The drive counterbalancing system is activated with right-hand side drive and a boom
function (bucket, boom, stick or auxiliary hydraulics).
☞
The drive counterbalancing system is enabled by means of an increased banking-up
pressure if both piston valves for driving and a boom function are activated.
➥
P3 takes over all boom functions
•
Right-hand side drive section
5-10
Hydraulic system
rive counterb lancing syste
Without drive counterbalancing system
With drive counterbalancing system
Function
Pump assignment for drive counterbalancing
Hydraulic supply by pump 1
Hydraulic supply by pump 2
•
Left-hand side drive section
•
Bucket section
•
Boom section
•
Stick section
•
Auxiliary hydraulics/boom swivel section
•
3rd control circuit section (option)
•
Stabiliser blade section
•
Swivel unit section
•
Drive counterbalancing system section
Hydraulic supply by pump 3