Claas Lexion 470, Lexion 420 Service Manual

LEXION 470 - 420 Montana

Technical

Systems

Electric/Hydraulic

System

Supplement

Electric System

LEXION-Montana

TIC

TIC	LEXION-Montana	Electric System

The present document exclusively describes all special electric and hydraulic functions of the LEXION Montana series.

Explanations and descriptions concerning the basic machine and the front attachments can be found in the relevant Electric System (297 550.x) and Hydraulic System

(297 549.x) documents.

D-S -	Central terminal compartment on Montana machines 014 501.0
	(with RIO module A50) .................................................................................	ZE-s-2
D-S -	Central terminal compartment on Montana machines 014 501.0
	(with HBM module A45) ...............................................................................	ZE-s-4
Module A35 - Montana control unit, for Montana machines
	(with RIO module A50) .................................................................................	ZE-s-9
Module A35 - Montana control unit, for Montana machines
	(with HBM module A45) .............................................................................	ZE-s-10
Module A36 - Montana gearshift module..................................................................		ZE-s-11
Module A45 - Ground drive hydraulic motor brake restrictor (HBM) .........................		ZE-s-12
Module A50 - Montana RIO module .........................................................................		ZE-s-12
01s -	Main power supply, diesel engine electric starting motor,
	for Montana machines....................................................................................	01s-2
02s -	Starting the diesel engine, diesel engine speed adjustment
	- for Montana machines..................................................................................	02s-2
04s -	Road travel activation, working hydraulics master valve,
	for Montana machines with module A50 (RIO)...............................................	04s-2
04t -	Road travel activation, working hydraulics master valve,
	for Montana machines with module A45 (HBM) ..............................................	04t-2
05s -	Terminal, keyboard, rotary switch, printer,
	for Montana machines with module A50 (RIO)...............................................	05s-2
05t -	Terminal, keyboard, rotary switch, printer,
	for Montana machines with module A45 (HBM) ..............................................	05t-2
06s -	CAN bus, module power supply,
	for Montana machines with module A50 (RIO)...............................................	06s-2
06t -	CAN bus, module power supply,
	for Montana machines with module A45 (HBM) ..............................................	06t-2

Electric System

LEXION-Montana

TIC

TIC	LEXION-Montana	Electric System
17s -	Front attachment drive, reverser drive for Montana machines	.......................	17s-2
20s -	Raise / lower front attachment, cross levelling – for Montana machines........		20s-2
26s -	Machine monitoring, for Montana machines...................................................		26s-2
41s -	Axle control system and front attachment control system,
	for Montana machines with module A50 (RIO)...............................................		41s-2
41t -	Axle control system and front attachment control system,
	for Montana machines with module A45 (HBM) ..............................................		41t-2
42s -	Ground drive and brake control,
	for Montana machines with module A50 (RIO)...............................................		42s-2
42t -	Ground drive and brake control,
	for Montana machines with module A45 (HBM) ..............................................		42t-2
Index	....................................................................................................................		Index-3

Electric System

LEXION-Montana

TIC

D-S

Central terminal compartment

014 501.0

Montana (with RIO module A50)

Electric System

LEXION Montana

TIC

D-S - Central terminal compartment on Montana machines 014 501.0 (with RIO module A50)

ZE-s-2

Lex-e-ZE

03/04

D-S

Central terminal compartment

014 501.0

Montana (with HBM module A45)

Electric System

LEXION Montana

TIC

D-S - Central terminal compartment on Montana machines 014 501.0 (with HBM module A45)

ZE-s-4

Lex-e-ZE

03/04

TIC	LEXION Montana	Electric System
Key to diagram:	Modules
A08	AUTOCONTOUR module (CAC)
A09	AUTOPILOT module
A10	Fieldwork computer module (BIF/CAB)
A12	Speed monitor module (DZW)
A16	Reel controller module (HAS)
A21	YIELD METER module (LEM)
A25	Sieve adjustment module
A26	Deflector adjustment module
A28	Uni-spreader module (VGS)
A36	Electro-hydraulic gearshift module
A45	Ground drive hydraulic motor brake restrictor module (HBM)
A50	RIO module (ground drive hydraulic motor brake restrictor)
	Electronic components
DI	Warning device diode PCB
D0	Master valve diode PCB
DS	Diagnosis (63-pin) VIA
	Fuses
F1	Dipped headlights circuit
F2	Sieve adjustment module 12 V control unit
F3	CAN connection of performance monitor
F4	+12 V electronic unit
F5	12 V air conditioner fan
F6	##
F7	CAC module
F8	Reel module
F9	Yield meter
F10	Yield meter
F11	Inside work lights
F12	Work lights
F13	Cigarette lighter
F14	Seat socket
F15	Drum/rotor speed adjustment
F16	Concave adjustment
F17	Diagnosis LED
F18	Cutterbar
F19	Engine speed switch
F20	All-wheel drive 12 V switch
F21	Threshing mechanism relay
F22	Fan speed relay
F23	Hazard warning switch 30
F24	Hazard warning switch 15
F25	Fan speed relay
F26	Reel controller
F27	Upper/lower sieve
F28	Autopilot switch
F29	12 V / K56 pin 30
F30	Brake light switch 12 V / Sieve pan light
F31	12 V IMO
F32	12 V IMO
F33	Air conditioner relay
F34	Engine control unit 12 V power supply
F35	CAC module / VGS module

03/04

Lex-e-ZE

ZE-s-5

Electric System	LEXION Montana	TIC
Key to diagram:
F36	Fuses
	Grain tank extension
F37	12 V grain tank drive
F38	Work light
F39	Chopper On/Off pushbutton
F40	Vehicle lighting switch 12 V
F41	Warning beacon
F42	12 V horn / wiper and washer system
F43	Position light, left-hand
F44	Position light, right-hand
F45	Left-hand full beam relay
F46	Left-hand dipped beam relay
F47	Right-hand full beam relay
F48	Right-hand dipped beam relay
F49	Table adjustment
F50	Grain tank extension
F51	Ignition diagnosis plug
F52	Instrument lighting
F53	Returns lighting
F54	Uni-spreader/Autopilot module
F55	Worklight switch
F56	Spare module
F57	Spare module
F58	Spare (connector H)
F59	Engine diagnosis
F60	12 V sockets LP/HP
F61	###
F62	Outside railing worklights relay
F63	12 V sensors power supply
F64	###
F65	###
F70	Ignition switch back-up fuse

ZE-s-6

Lex-e-ZE

03/04

TIC	LEXION Montana	Electric System
Key to diagram:	Relays
K1	Raise reel
K2	Lower reel
K3	Reel forward
K4	Reel backward
K5	Raise cutterbar
K6	Lower cutterbar
K7	Cutterbar left-hand cross levelling
K8	Cutterbar right-hand cross levelling
K9	Table adjustment forward
K10	Table adjustment backward
K13	Threshing mechanism On/Off
K14	Threshing mechanism On/Off
K15	Cutterbar
K16	Cutterbar
K20	Lighting main relay
K23	Alternator
K24	Air conditioner relay
K25	Left-hand full beam relay
K26	Right-hand full beam relay
K27	Left-hand dipped beam relay
K28	Right-hand dipped beam relay
K29	Drum speed adjustment relay
K30	Drum speed adjustment relay
K31	Grain tank extension up
K32	Grain tank extension down
K33	Concave clearance +
K34	Concave clearance -
K35	Front attachment speed +
K36	Front attachment speed -
K37	Fan speed +
K38	Fan speed -
K39	Reel speed -
K40	Reel speed +

03/04

Lex-e-ZE

ZE-s-7

Electric System	LEXION Montana	TIC
Key to diagram:	Relays
K41	Upper sieve adjustment -
K42	Upper sieve adjustment +
K43	Lower sieve adjustment -
K44	Lower sieve adjustment +
K45	Work lights
K46	Grain tank unloading tube swing time relay
K47	Flash relay USA
K48	Indicator relay Europe
K49	Road travel main relay
K50	Work lights relay
K51	Relay 15
K53	Start relay
K54	Rotor variator +
K55	Rotor variator -
K56	Plus 15 power supply
K57	Transducer
K58	Alternator relay
K59	Work lights relay
K61	Warning beacon
K62	Warning beacon grain tank 70% full
K63	Fan speed relay
K64	Reel speed relay
K67	Spare relay
K68	Spare relay
K69	Spare relay
K70	Grain tank unloading relay

ZE-s-8

Lex-e-ZE

03/04

TIC	LEXION Montana	Electric System

Module A35 - Montana control unit, for Montana machines (with RIO module A50)

Pin	Function	Component	Measuring	Direction	Circuit
			variable		diagram no.
1	Earth	A41	Earth	Output	05S
2	CAN Low Montana	A41	-	Output	05S
3	CAN High Montana	A41	-	Output	05S
4	Power supply (CAN)	A41	12 V	Output	05S
5	not used	---	---	---	---
6	Parking brake signal	S93	12 V	Input	41S
7	Montana cross levelling sensor signal	B94	0.25-4.75 V	Input	41S
8	Montana feed rake conveyor sensor signal	B95	0.25-4.75 V	Input	41S
9	Right-hand axle angle sensor signal	B92	0.25-4.75 V	Input	41S
10	not used	---	---	---	---
11	Oil quantity increase	Y118	12 V	Output	41S
12	Master valve (Montana)	Y128	12 V	Output	4S, 4t
13	Lower axle, right-hand side	Y116	12 V	Output	41S
14	Raise axle, right-hand side	Y117	12 V	Output	41S
15	Rotate front attachment to the right	Y112	12 V	Output	41S
16	Lower cutting angle	Y111	12 V	Output	41S
17	Power supply (K69)	---	12 V	Input	41S, 4S
18	Power supply (K69)	---	12 V	Input	41S, 4S
19	RS 232	---	---	---	05S
20	RS 232	---	---	---	05S
21	RS 232	---	---	---	05S
22	RS 232 (Boot)	---	---	---	05S
23	not used	---	---	---	---
24	Earth sensors	B91, B92,	Earth	Output	41S
		B93, B94,
		B95
25	Cutting angle sensor signal	B93	0.25-4.75 V	Input	41S
26	Left-hand axle angle sensor signal	B91	0.25-4.75 V	Input	41S
27	Power supply of sensors	B91, B92,	12 V	Output	41S
		B93, B94,
		B95
28	not used	---	---	---	---
29	Master valve (Working hydraulics)	Y77	12 V	Output	4S
30	Lower axle, left-hand side	Y114	12 V	Output	41S
31	Raise axle, left-hand side	Y115	12 V	Output	41S
32	Rotate front attachment to the left	Y113	12 V	Output	41S
33	Raise cutting angle	Y110	12 V	Output	41S
34	Earth	---	Earth	Input	41S, 4S
35	Earth	---	Earth	Input	41S, 4S

03/04

Lex-e-ZE

ZE-s-9

Electric System

LEXION Montana

TIC

Module A35 - Montana control unit, for Montana machines (with HBM module A45)

Pin	Function	Component	Measuring	Direction	Circuit
			variable		diagram no.
1	Power supply (K69)	---	12 V	Input	41t, 4t
2	Lower axle, left-hand side	Y114	12 V	Output	41t
3	Raise axle, left-hand side	Y115	12 V	Output	41t
4	Raise axle, right-hand side	Y117	12V	Output	41t
5	Lower axle, right-hand side	Y116	12 V	Output	41t
6	Rotate front attachment to the left	Y113	12 V	Output	41t
7	Rotate front attachment to the right	Y112	12 V	Output	41t
8	Raise cutting angle	Y110	12 V	Output	41t
9	Lower cutting angle	Y111	12 V	Output	41t
10	Master valve (Montana)	Y128	12 V	Output	4t
11	Master valve (Working hydraulics)	Y77	12 V	Output	4t
12	Oil quantity increase	Y118	12 V	Output	41t
13	not used	---	---	---	---
14	Earth	---	Earth	Input	41t
15	Power supply (K69)	---	12 V	Input	41t, 4t
16	Left-hand axle angle sensor signal	B91	0.25-4.75 V	Input	41t
17	Montana cross levelling sensor signal	B94	0.25-4.75 V	Input	41t
18	not used	---	---	---	---
19	not used	---	---	---	---
20	not used	---	---	---	---
21	CAN Low (Inclinometer)	B126	-	Output	05t
22	not used	---	---	---	---
23	CAN Low (Montana)	A41	-	Output	05t
24	Earth	A41	Earth	Output	05t
25	RS 232	---	---	---	05t
26	RS 232	---	---	---	05t
27	not used	---	---	---	---
28	Earth	---	Earth	Input	41t
29	Power supply (K69)	---	12 V	Input	4t
30	Right-hand axle angle sensor signal	B92	0.25-4.75 V	Input	41t
31	Cutting angle sensor signal	B93	0.25-4.75 V	Input	41t
32	Parking brake signal	S93	12V	Input	41t
33	Earth sensors	B91, B92,	Earth	Output	41t
		B93, B94,
		B95, B126
34	not used	---	---	---	---
35	not used	---	---	---	---
36	CAN High (Inclinometer)	B126	-	Output	05t
37	Power supply (CAN)	A41	12 V	Output	05t
38	CAN High (Montana)	A41	-	Output	05t
39	RS 232 (Boot)	---	---	---	05t
40	RS 232	---	---	---	05t
41	not used	---	---	---	---
42	not used	---	---	---	---

ZE-s-10

Lex-e-ZE

03/04

TIC

LEXION Montana

Electric System

Module A36 - Montana gearshift module

Pin

Function

Component

Measuring

Direction

Circuit

variable

diagram no.

1

Earth

---

Earth

Input

42s, 42t

2

Power supply (+15)

K56

12 V

Input

42s, 42t

3

Gearbox shifting release

S90

12 V

Output

42s,

42t

4

2nd gear signal

Z83

12 V

Input

42s, 42t

5

1st gear signal

Z82

12 V

Input

42s, 42t

6

Gearbox shift 1st gear

Y107

12 V

Output

42s, 42t

7

Gearbox shift 2nd gear

Y108

12 V

Output

42s,

42t

8

Ground speed control lever neutral signal

Z57

Earth

Input

1s;42s, 42t

9

Ground drive control pressure circuit SH

Y125

12 V

Output

42s, 42t

10

Engine speed maximum

---

12 V – 1st gear

Output

42s, 42t

reduced

0 V – 2nd gear

11

Engine speed (Gearshift control)

---

12 V

Input

42s, 42t

12

Parking brake circuit

Y123

12 V

Input

42s, 42t

13

Shifting aid uphill signal

Y121

12 V

Input

42s, 42t

14

Shifting aid downhill signal

Y122

12 V

Input

42s, 42t

15

Working hydraulics master valve

Y77

12 V

Output

4s,

4t

16

Working hydraulics master valve

Y77

12 V

Output

4s,

4t

17

Montana master valve

Y128

12 V

Output

4s, 4t

18

Montana master valve

Y128

12 V

Input

4s, 4t

19

Montana master valve

Y128

12 V

Input

4s

20

Working hydraulics master valve

Y77

12 V

Input

4s,

4t

21

Working hydraulics master valve

Y77

12 V

Input

4s,

4t

22

Working hydraulics master valve

Y77

12 V

Input

4s,

4t

23

Working hydraulics master valve

Y77

12 V

Input

4s,

4t

24

Shifting aid

Y121; Y122

12 V

Output

42s, 42t

25

not used

---

---

---

---

03/04

Lex-e-ZE

ZE-s-11

Electric System

LEXION Montana

TIC

Module A45 - Ground drive hydraulic motor brake restrictor (HBM)

	Pin			Function			Component			Measuring			Direction			Circuit
										variable						diagram no.
	1			---		---			---			---			---
	2			Master valve			Y77			12 V			Output			42t
	3			CAN high		-			-			-				6t
	4			Power +15			K51/87			12 V			Input			6t
	5			---		---			---			---			---
	6			Earth (GND)		-31				Earth			Input			6t
	7			---		---			---			---			---
	8			Brake restrictor			Y124			12 V			Output			42t
	9			CAN low		-			-			-				6t

Module A50 - Montana RIO module
Pin	Function	Component	Measuring	Direction	Circuit
			variable		diagram no.

R0/1	+12 V electronic unit	---	---	---	---
R0/2	+12 V power	---	---	---	---
R0/3	Output 1 Montana master valve	Y128	12 V	Output	4s, 42s
R0/4	Ground drive hydraulic motor brake	Y124	12 V	Output	42s
	restrictor (output 3)
R0/5	Working hydraulics	Y77	12 V	Output	4s, 42s
	master valve output 2
R0/6	Output 4	---	---	---	---
R0/7	Sensor 1	---	---	---	---
R0/8	Sensor 2	---	---	---	---
R0/9	Earth	---	---	---	---
R0/10	Earth	---	---	---	---
R0/11	Module code 1	---	---	---	---
R0/12	Module code 2	---	---	---	---
R0/13	Module code 3	---	---	---	---
R0/14	Module code 4	---	---	---	---
R0/15	Sensor 3	---	---	---	---
R0/16	Sensor 4
R1/1	CAN low	---	---	---	6s
R1/2	+12 V electronic unit	---	12 V	Input	2s, 6s
R1/3	+12 V power	---	12 V	Input	2s, 6s
R1/4	CAN high	---	---	---	6s
R1/5	Earth	---	Earth	Input	6s
R1/6	Earth	---	Earth	Input	6s

ZE-s-12

Lex-e-ZE

03/04

01s

Main power supply,

Diesel engine electric starting motor

for Montana machines

Electric System

LEXION Montana

TIC

01s - Main power supply, diesel engine electric starting motor, for Montana machines

Key to diagram:		Coordinates
A10	Fieldwork computer module (BIF/CAB) .............................	2-h-20
G1	Battery................................................................................	7-n-21
G2	Generator...........................................................................	1-g-17
K13	Threshing mechanism relay...............................................	3-h-20
K53	Start relay...........................................................................	3-h-20
M21	Electric starting motor ........................................................	3-n-19
S64	Ignition switch .....................................................................	3-f-18
U21	Battery isolating switch ......................................................	6-o-20
Z57	Ground speed control lever
	neutral position switch - safety start switch .......................	3-g-18

Measured value table:	Item	Component	Measured value	Remark
	K13	Remote control relay	95±10 Ω	(Pin 86/1 – 85/2)
		15 A		(Pin 87a/4 – 30/3)
		30 A		(Pin 87/5 – 30/3)
	K53	Remote control relay	115±10 Ω	(Pin 86/1 – 85/2)
		70 A		(Pin 87/5 – 30/3)

1s-2

Lex-e-01s

03/04

TIC	LEXION-Montana	Electric System
Description of function:
Montana machine:	In this circuit, the difference between the standard machine and the
	Montana machine is only in a cable branch at connector P to P1. The
	signal of ground speed control lever in neutral position (Z57) is required
	on Montana machines for releasing the gear shifting.
Diesel engine electric	As a safety start switch, relay K53 is supplied with earth only when
starting motor	switches (Z57a/Z57b) on the ground speed control lever are in neutral
	position and the threshing mechanism is disengaged via relay K13. The
	ignition lock (S64) then actuates the diesel engine starting motor (M21)
	via relay K53 with +50a.

03/04

Lex-e-01s

1s-3

Electric System		LEXION Montana		TIC
Connector pin definition:
Connector P, P1		Connector G		Connector C

Interconnection list:

from	to 1	to 2	to 3	to 4	to 5	mm²	Colour
C-1	15					6	bk
C-2	G-7	C-21				1.5	bk-rd
C-3	K53-86	K56-86	K52-86			0.75	bk-ye
C-21	G-7	C-2				1.5	bk-rd
C-22	30					6	rd
G-1	K53-87	DS-43				4	bk-ye
G-7	C-2	C-21				1.5	bk-rd
G-16	C-18	K58-86	Cab-34 /			0.75	bl
			Bif-11
P-5	K13-30					1.5	vi-br
P-6	X-7	DI-7				1.5	vi-ye
P-12	31					2.5	br
P1-5	P-5	A36-8				1.5	vi-bl

1s-4

Lex-e-01s

03/04

02s

Starting the diesel engine, Diesel engine speed adjustment

for Montana machines

Electric System

LEXION Montana

TIC

02s - Starting the diesel engine, diesel engine speed adjustment - for Montana machines

Key to diagram:		Coordinates
A10	Fieldwork computer module (BIF/CAB) .............................	2-h-20
A15	Electronic engine control module ......................................	2-o-18
D1	Diesel engine error code LED............................................	3-h-20
DC	Caterpillar diagnosis ..........................................................	3-h-20
K51	Ignition switch relay ...........................................................	3-h-20
K56	Montana relay ....................................................................	3-h-20
R14	CAN bus matching resistor (J1939)...................................	3-h-20
S35	Engine speed adjustment switch .......................................	3-g-17
U22	Diesel engine diagnosis switch..........................................	3-h-20
Z33	Coolant level switch without engine cut-off system ..........	1-m-17

Measured value table:	Item	Component	Measured value	Remark
	K51	Remote control relay	115±10 Ω	(Pin 86/1 – 85/2)
		70 A		(Pin 87/5 – 30/3)

2s-2

Lex-e-02s

03/04

TIC	LEXION Montana			Electric System
Description of function:
Montana machine:	In this circuit, the difference between the standard machine and the
	Montana machine is only in a cable branch at connector Y to Y1. The
	gearbox switch on connector Y is dropped for Montana machines.
	The Montana functions are supplied with power via the unactuated relay
	K56. During the starting process, relay K56 is actuated and thus interrupts
	the power supply.
Starting	The safety start switch circuit of this engine is identical with the one used
	on the mechanically controlled engines.
	The engine controller module (A15) is activated via relay K51 by the
	ignition lock (S64). During the starting procedure, the engine controller
	module (A15) receives the speed signal from the sensor provided on the
	camshaft and starts the injection.
Engine monitoring	All sensors relevant for operation and monitoring of the engine are
	mounted on the engine wiring loom. Only the water level sensor is
	connected to the CLAAS wiring loom.
	The engine controller module (A15) transmits the signals for displaying
	the engine speed and the coolant temperature to the CAB module (A10)
	via the CAN bus J1939. The CAN module (A10) converts this signal to the
	CLAAS CAN bus, thus allowing display on the terminal.
Engine diagnosis	The number of the engine errors occurred and the corresponding error
	codes can be displayed in the terminal
	(see also the error code list in the Electric System documentation
	297550.x - Diagram 2e).
	Further diagnosis is carried out via the diagnosis plug in the central
	terminal compartment, using the Caterpillar diagnosis tool CAT-ET. The
	display of error codes can also be activated by the diagnosis LED (D1)
	after actuating the rocker switch (U22).
Diesel engine speed	The diesel engine speed depends on the position of switch S35 and of the
adjustment	2nd gear actual value switch (Z83) – see also circuit diagram 42s.
	If full throttle speed is selected and the 2nd gear engaged (signal input
	A36 / pin 4), the connection between Z41a and Z41b inside the Montana
	gearshift control module (A36) is cut (pins 10 and 11) – see also circuit
	diagram 42s.
	The full throttle speed is reduced to road travel speed, depending on the
	contry version. The maximum speed which can be achieved now can be
	configured using the Claas diagnosis system CDS.
	LEXION	Idle speed	Full throttle at	20km/h	25km/h
	Type	(S35)	no load	(Z83)	(Z83)
			(S35)
	Montana	1200 rpm	2100 rpm	1568 rpm	1960 rpm
	470-420

03/04

Lex-e-02s

2s-3

Electric System		LEXION Montana	TIC
Connector pin definition:
Connector MD, O, Y, Y1		Connector G

Interconnection list:

from	to 1	to 2	to 3	to 4	to 5	mm²	Colour
G-1	K53-87	DS-43	A15-64	M21-50		4	bk-ye
G-10	F34-A	DS-4	A15-70			4	bk-rd
Y-3	W-7	DS-2	Cab-18			1.5	br-wh
Y-4	W-6	DS-1	O-10	Cab-19		1.5	br-ye
Y-9	K56-87a	DS-3				1.5	bk
O-10	W-6	DS-1	Y-4	Cab-19		1.5	wh-rd
O-12	F19-A					2.5	bk
MD-1	30	A15-48	A15-52	A15-53		0.5	wh
MD-4	A15-8	XM-D				0.5	wh
MD-5	A15-9	XM-E				0.5	wh
MD-6	31	A15-61	A15-62	A15-63	XM-B
	U22-1					0.5	wh
MD-7	A15-28	D2-K				0.5	wh
MD-8	A15-44	U22-2				0.5	wh
MD-9	A15-34	R14-B				0.5	wh
MD-10	A15-50	R14-A				0.5	wh
MD-11	A15-42	R14-C				0.5	wh
XM-A	F59-A					0.5	wh
XM-B	MD-6	U22-1				0.5	wh
XM-C	MD-11					0.5	wh
XM-D	MD-4					0.5	wh
XM-E	MD-5					0.5	wh
XM-F	MD-9					0.5	wh
XM-G	MD-10					0.5	wh
Y1-3	Y-3	A36-10				1.5	br-gr
Y1-4	Y-4	A36-11				1.5	br-ye
Y1-9	Y-9	A50-RI-2+3	XSA-C4	XSA-B5	A36-2	1.5	bk

2s-4

Lex-e-02s

03/04

4s

Road travel activation, master valve

for Montana machines (with RIO module A50)

Electric System

LEXION Montana

TIC

04s - Road travel activation, working hydraulics master valve, for Montana machines with module A50 (RIO)

Key to diagram:		Coordinates
A35	Montana control unit module ...............................................	7-i-18
A36	Montana gearshift control module .....................................	2-h-20
B90	Brake accumulator pressure sensor/switch.......................	5-g-20
DO	Master valve diode PCB ....................................................	3-h-20
D5	Master valve DO diode PCB LED......................................	3-h-20
K49	Road travel main relay.......................................................	3-h-20
K69	Montana relay ....................................................................	3-h-20
S52	Road travel switch (red).....................................................	3-g-17
Y77	Working hydraulics master valve solenoid coil .................	6-m-21
Y128	Montana master valve solenoid coil ..................................	7-h-18

Measured value table:	Item	Component	Measured value	Remark
	B90	Brake circuit oil	ON	< 135 bar
		pressure / charge	OFF	> 165 bar
		pressure
	K49	Remote control relay	115±10 Ω	(Pin 86/1 – 85/2)
		70 A		(Pin 87/5 – 30/3)
	K69	Remote control relay	95±10 Ω	(Pin 86/1 – 85/2)
		15 A		(Pin 87a/4 – 30/3)
		30 A		(Pin 87/5 – 30/3)
	Y77	Solenoid coil	3.8 A
	Y128		3.2 Ω

4s-2

Lex-e-04s

03/04

TIC	LEXION Montana	Electric System

Description of function:

Montana machine:

Activation of road travel

Working hydraulics master valve

Montana axle hydraulics master valve

Montana brake pressure accumulator

Increased brake effect Montana – only with module A50 (RIO)

On Montana machines, actuation of the working hydraulics master valve (Y77) is always via the gearshift control module (A36).

During road travel, the road travel switch (S52) must be locked in order to cut the power supply for all unnecessary electrical and hydraulic functions.

In order to be able to build up the necessary working pressure for many hydraulic controls, the neutral hydraulic circulation must be blocked (see also the "Hydraulic system" section). In this case, the solenoid coil (Y77) is actuated in parallel with the function directly via the diode PCB (DO) and the gearshift control module (A36).

A LED (D5) provided on the diode PCB indicates the activation of the circuit.

For the Montana functions as well, the circulation of the independent axle control system hydraulics must be blocked (see also "Hydraulic System" document).

According to the actuated functions, the Montana control unit (A35) actuates the Montana master valve (Y128) and/or the working hydraulics master valve (Y77) via the gearshift control module (A36).

The sensor/switch (B90) controls the brake system accumulator pressure and, if necessary, actuates the working hydraulics master valve (Y77) via the gearshift control module (A36) in order to recharge the brake circuit accumulator.

If the diesel engine speed drops below 2300 rpm while braking, the RIO module (A50) actuates the working hydraulics master valve (Y77) via A50/pin R5 and the axle hydraulics master valve (Y128) via A50/pin R3. This hydraulic load on the diesel engine increases the braking effect. In addition, a brake restrictor is activated in the hydrostatic ground drive – circuit diagram 42s.

03/04

Lex-e-04s

4s-3

Electric System		LEXION Montana		TIC
Connector pin definition:
Connector N, P, P1, V, V1		Connector XSA		Connector XSA

Connector XSD		Connector XSD

Interconnection list: I
from	to 1	to 2	to 3	to 4	to 5	mm²	Colour
N-5
N-6	K49-85					0.5	br-bl
P-10	F20-A					1.5	gn-rd
P-12	31					2.5	br
V-10	DO-28	A36-21	DS-50			1.5	pi-wh
V-11	31					2.5	br
V-12	31					2.5	br
P1-10	P-10					1.5	gn-rd
V1-10	A36-15+16					1.5	wh-pi
V1-11	V-11					2.5	br
V1-12	V-12					2.5	br

4s-4

Lex-e-04s

03/04