User Manual

Table Of Contents
TIC LEXION Montana 570-520 Electric System
03/05 Lex-e-42t 42t-3
Description of function:
1/2
Gearshift control The gearshift control switch (S90) is supplied with power only if the
signal of the ground speed control lever in neutral position (Z57) and o
f
the applied parking brake (Z84/Z85) is applied to the MONTANA GEN
II module (A42).
While shifting gears, the solenoid coils (Y121, Y122) are energized
alternatingly at short intervals and the working hydraulics master valve
(Y77) in parallel with them.
The high-pressure circuits in the ground drive are subject to pressure
alternatingly, which sets the hydraulic motor slightly in rotation in one
or the other direction. This makes engaging the gears in the gearbox
(Y107, Y108) much easier.
The engaged gear is displayed in the operating panel (H60, H61) via
the gearbox switches (Z82, Z83).
If none of the mechanical gears (Z82, Z 83) is engaged, no control oil
pressure for the ground drive is built up since the MONTANA GEN II
module (A42) does not actuate the solenoid coil (Y125).
Diesel engine speed adjustment
– circuit diagram 2t
The diesel engine speed depends on the position of switch S35 and of
the 2nd gear actual value switch (Z83).
When full throttle speed is activated and 2
nd
gear is engaged, the full
throttle speed is reduced to road travel speed specifically for each
country.
Swing angle of hydraulic motor
and differential lock.
The hydraulic drive ranges resulting from the changed swivel angle in
the hydraulic motor (S92, Y144) and the differential lock inside the axle
(S94, Y105) are set manually without any influence from the gearshift
control menu (A36).