TIC Key to diagram:
LEXION Montana 570-520
Basic Machine Hydraulic System
Y21 Y35 Y52 Y76 Y88 Y105 Y106 Y107 Y108 Y141 Y142 Y143 Z46
Threshing mechanism clutch engage solenoid valve Grain tank unloading solenoid valve Sample gate solenoid valve (moisture measurement) Straw chopper clutch solenoid valve Front attachment clutch solenoid valve (proportional) Differential lock Parking brake Transmission - 1st gear Transmission – 2nd gear Ground drive forward Ground drive backward Ground drive/Shut-off valve Oil pressure switch .......................................12 bar
k
when „Active-Trac“ rear drive axle is fitted
A T P P2 P4 P5 S
Consumer port Tank port Ground drive feed pump port Working hydraulics port Rotary chaff screen port Low-pressure port Grain tank unloading lubricant brush port
M2 M4 M5
High pressure backward measuring port Actuating pressure backward measuring port Actuating pressure forward measuring port
VI
Low-pressure hydraulics valve block
Malfunctions: When there are malfunctions in the low-pressure hydraulic system, only consumers which have been shut-down can cause a pressure drop in the system. In this way, the reason of a malfunction can be quickly determined by shutting down individual functions while keeping a pressure gauge connected (measuring port 910).
Note:
06/07
Oil supply of the low-pressure hydraulic system is ensured by the ground drive feed pump (209). The orifice plate (412) limits the volume flow to the lowpressure hydraulic system to 5-7 l/min at the rated pressure +4 (19 bar). This ensures that the feed pressure for the hydrostatic ground drive will not collapse even in case of large leaks in the low-pressure hydraulic system.
Lex-h-Kap4
4-11
