User Manual

Table Of Contents
TIC LEXION Montana 570-520 Electric System
03/05 Lex-e-42s 42s-3
Description of function:
1/2
Gearshift control Both the gearshift control switch (S90) and the shifting aid switch (S91)
are supplied with power only if the signal of the ground speed control
lever in neutral position (Z57) and of the applied parking brake
(Z84/Z85) is applied to the gearshift control module (A36).
When the shifting aid (S91) is actuated, the Montana master valve
(Y128) is actuated via the gearshift control module (A36) – Circuit
diagram 04s).
In addition, the corresponding solenoid coil (Y121, Y122) loads the
respective high-pressure circuit in the ground drive, making the
hydraulic motor rotate slightly. This allows shifting the 1
st
gear (Y107)
or the 2
nd
gear (Y108) easily by hydraulic means.
The gearbox switches (Z82, Z83) allow indicating the engaged gear in
the operating panel (H60, H61) and this gear is kept in position (Y107,
Y108) by the feedback to the gearshift control module (A36) even
when the parking brake is released. Via the gearshift control module
(A36), the gearbox switch 2
nd
gear (Z83) also cuts the connection with
the diesel engine speed adjustment (connection with A10) so that the
road travel speed is automatically set.
If none of the mechanical gears (Z82, Z 83) is engaged, no control oil
pressure for the ground drive is built up since the gearshift control
module (A36) does not actuate the solenoid coil (Y125).
Diesel engine speed adjustment
- circuit diagram 2s
The diesel engine speed depends on the position of switch S35 and of
the 2
nd
gear actual value switch (Z83).
If full throttle speed is selected and the 2
nd
gear engaged (signal input
A36 / pin 4), the connection between (A10/Pin18) and (A10/Pin19)
inside the Montana gearshift control module (A36) is cut (pins 10 and
11).
The full throttle speed is reduced to road travel speed, depending on
the country version.
Parking brake The parking brake (S93) is being actuated when solenoid coil (Y106) is
not actuated.
Besides the warning signals for insufficient brake oil pressure, the
applied parking brake (S93/Z12) is also displayed in the terminal.
If the parking brake (S93/Z12) is applied, no control oil pressure for the
ground drive is built up since the gearshift control module (A36) does
not actuate the solenoid coil (Y125).