Claas Dominator 140, Dominator 150 Service Manual

Dominator 140

Dominator 150

Technical Systems

Hydraulic System

TIC	Dominator 140 - 150	Hydraulic System

Contents

Chapter 1 Overall hydraulic system		.................................................. 1-1
Chapter 2	Steering hydraulics ...........................................................	2-1
Chapter 3	Working hydraulics ...........................................................	3-1
Chapter 4	Ground drive hydraulics ...................................................	4-1
Position of components ......................................................................		R-1
Index ..........................................................................................		index-1

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Hydraulic System

Dominator 140 - 150

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TIC	Dominator 140 - 150	Overall Hydraulic System

Chapter 1

Overall hydraulic system

1.1Overall hydraulic system circuit diagram

with 3D sieve pan.....................................................................

1-4

1.2Overall hydraulic system circuit diagram

	without 3D sieve pan................................................................	1-8
1.3	Technical data........................................................................	1-11

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1.1

Overall hydraulic system circuit diagram

with 3D sieve pan

Overall Hydraulic System

Dominator 140 - 150

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1.1Overall hydraulic system circuit diagram with 3D sieve pan

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TIC		Dominator 140 - 150	Overall Hydraulic System
Key to diagram:	I	Master valve working hydraulics valve block
	II	Front attachment / threshing drum variator working hydraulics
		valve block
	III	Grain tank unloading tube working hydraulics valve block
	IV	Front attachment reverse working hydraulics valve block
	V	Orbitrol steering hydraulics
	VI	Ground drive hydraulics hydrostatic pump
	VII	Ground drive hydraulics hydrostatic motor
	102	Pressure filter..........................................................		10 µm
	107	Oil drain
	109	Oil cooler
	110	Oil tank
	112	Return filter
	205	Working hydraulics pump .......................................		10.8 cm3/rev.
	207	Ground drive fixed displacement motor HMF 75 ....		75 cm3/rev.
	209	Ground drive feed pump .........................................		22.5 cm3/rev.
	211	Ground drive variable displacement pump		75 cm3/rev.
		HPV 75 .........................................................
	218	Steering hydraulics pump .......................................		6 cm3/rev.
	226	Front attachment reverser drive motor

301 3-D sieve pan hydraulic cylinder

311 Threshing drum variable-speed drive hydraulic cylinder

313Ground drive servo control pump hydraulic cylinder

314Reel raise/lower slave cylinder

315Reel raise/lower main cylinder

316Horizontal reel adjustment hydraulic cylinder

320 Swing grain tank unloading tube hydraulic cylinder

323 Steering hydraulic cylinder

351 Raise/lower front attachment hydraulic cylinder

353 Reverse front attachment hydraulic cylinder

406	Orifice plate.............................................................	Ø 0.8 mm
410	Orifice plate ............................................................	Ø 1.5 mm
441	Rotary coupling
601	3D sieve pan pendulum control 4/3 way valve
606	Ground drive servo control 4/3 way valve
609	Orbitrol steering system rotary valve
614	Front attachment lower flow control valve

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Overall Hydraulic System		Dominator 140 - 150	TIC
Key to diagram:	703	Working hydraulics pressure relief valve................	180+10
	710	Ground drive filter bypass valve .............................	2 bar
	713	Ground drive multi-function valve, reverse.............	420 bar
	714	Ground drive multi-function valve, forward.............	420 bar
	716	Ground drive feed pressure relief valve..................	19 bar
	718	Ground drive feed circuit cold start injector ............	25 bar
	719	Ground drive flush pressure control valve..............	10 bar
	721	Ground drive flush-out shuttle valve	150+15 bar
	725	Steering double shock valve...................................
	726	Steering pressure relief valve .................................	90+5 bar
	728	Anti-cavitation valve (non-return valve)
	732	Non-return valve
	734	Lock-up valve unit (non-return valve)
	742	Steering safety valve
	743	Front attachment lower valve
	759	One-way restrictor valve, two-sided
	801	Quick release coupling
	901	Working hydraulics measuring point
	902	Ground drive hydraulics high pressure backward measuring
		point
	903	Ground drive hydraulics high pressure forward measuring
		point
	904	Ground drive hydraulics feed pressure measuring point
	909	Steering hydraulics measuring point
	Y19	Threshing drum variable-speed drive slow solenoid valve
	Y20	Threshing drum variable-speed drive fast solenoid valve
	Y22	Reel raise solenoid valve
	Y23	Reel lower solenoid valve
	Y24	Reel forward solenoid valve
	Y25	Reel reverse solenoid valve
	Y33	Grain tank unloading tube swing out solenoid valve
	Y34	Grain tank unloading tube swing in solenoid valve
	Y77	Working hydraulics master valve solenoid valve
	Y85	Raise front attachment solenoid valve
	Y86	Reverse front attachment solenoid valve
	Y87	Lower front attachment solenoid valve

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1.2

Overall hydraulic system circuit diagram

without 3D sieve pan

Overall Hydraulic System

Dominator 140 - 150

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1.2Overall hydraulic system circuit diagram without 3D sieve pan

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TIC		Dominator 140 - 150	Overall Hydraulic System
Key to diagram:	I	Master valve working hydraulics valve block
	II	Front attachment / threshing drum variator working hydraulics
		valve block
	III	Grain tank unloading tube working hydraulics valve block
	IV	Front attachment reverse working hydraulics valve block
	V	Orbitrol steering hydraulics
	VI	Ground drive hydraulics hydrostatic pump
	VII	Ground drive hydraulics hydrostatic motor
	102	Pressure filter........................................................		10 µm
	107	Oil drain
	109	Oil cooler
	110	Oil tank
	112	Return filter
	205	Working hydraulics pump .....................................		10.8 cm3/rev.
	207	Ground drive fixed displacement motor HMF 75 ..		75 cm3/rev.
	209	Ground drive feed pump .......................................		22.5 cm3/rev.
	211	Ground drive variable displacement pump		75 cm3/rev.
		HPV 75 .......................................................
	218	Steering hydraulics pump .....................................		6 cm3/rev.
	226	Front attachment reverser drive motor

311 Threshing drum variable-speed drive hydraulic cylinder

313Ground drive servo control pump hydraulic cylinder

314Reel raise/lower slave cylinder

315Reel raise/lower main cylinder

316Horizontal reel adjustment hydraulic cylinder

320 Swing grain tank unloading tube hydraulic cylinder

323 Steering hydraulic cylinder

351 Raise/lower front attachment hydraulic cylinder

353 Reverse front attachment hydraulic cylinder

406	Orifice plate...........................................................	Ø 0.8 mm
410	Orifice plate ..........................................................	Ø 1.5 mm
441	Rotary coupling
606	Ground drive servo control 4/3 way valve
609	Orbitrol steering system rotary valve
614	Front attachment lower flow control valve

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Overall Hydraulic System		Dominator 140 - 150	TIC
Key to diagram:	703	Working hydraulics pressure relief valve...............	180+10
	710	Ground drive filter bypass valve ............................	2 bar
	713	Ground drive multi-function valve, reverse ............	420 bar
	714	Ground drive multi-function valve, forward ............	420 bar
	716	Ground drive feed pressure relief valve.................	19 bar
	718	Ground drive feed circuit cold start injector ...........	25 bar
	719	Ground drive flush pressure control valve.............	10 bar
	721	Ground drive flush-out shuttle valve	150+15 bar
	725	Steering double shock valve..................................
	726	Steering pressure relief valve ................................	90+5 bar
	728	Anti-cavitation valve (non-return valve)
	732	Non-return valve
	734	Lock-up valve unit (non-return valve)
	742	Steering safety valve
	743	Front attachment lower valve
	759	One-way restrictor valve, two-sided
	801	Quick release coupling
	901	Working hydraulics measuring point
	902	Ground drive hydraulics high pressure backward measuring
		point
	903	Ground drive hydraulics high pressure forward measuring
		point
	904	Ground drive hydraulics feed pressure measuring point
	909	Steering hydraulics measuring point
	Y19	Threshing drum variable-speed drive slow solenoid valve
	Y20	Threshing drum variable-speed drive fast solenoid valve
	Y22	Reel raise solenoid valve
	Y23	Reel lower solenoid valve
	Y24	Reel forward solenoid valve
	Y25	Reel reverse solenoid valve
	Y33	Grain tank unloading tube swing out solenoid valve
	Y34	Grain tank unloading tube swing in solenoid valve
	Y77	Working hydraulics master valve solenoid valve
	Y85	Raise front attachment solenoid valve
	Y86	Reverse front attachment solenoid valve
	Y87	Lower front attachment solenoid valve

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1.3Technical data

Working hydraulics	Dominator 140 -150	Sense of rotation	= Counterclockwise
		Drive nmax	= 3092 rpm
		Power	= 33 l/min at 10.8 cm3/rev.
Steering hydraulics	Dominator 140 -150	Sense of rotation	= Counterclockwise
		Drive nmax	= 3092 rpm
		Power	= 18.5 l/min at 6 cm3/rev.
Linde ground drive	Dominator 140 -150	Sense of rotation	= Counterclockwise
		Drive nmax	= 3092 rpm
		Power approx.	= 230 l/min at 75 cm3/rev.
Linde feed pump	Dominator 140 -150	Sense of rotation	= Counterclockwise
		Drive nmax	= 3092 rpm
		Power	= 69.5 l/min at 22.5 cm3/rev.

Note: The exact pump output can only be determined using a flowmeter. During this measurement, the output under maximum system pressure and at operating temperature (60°C) may fall by

15% max.

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Overall Hydraulic System

Dominator 140 - 150

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TIC	Dominator 140 - 150	Hydraulic System

Chapter 2

Steering hydraulics

2.1	Steering hydraulics circuit diagram	.......................................... 2-4
2.2	Steering valve unit ...................................................................	2-6
2.3	Function of steering .................................................................	2-8
2.4	Checking the steering ............................................................	2-12

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2.1

Steering hydraulics circuit diagram

Hydraulic System

Dominator 140 - 150

TIC

2.1Steering hydraulics circuit diagram

Key to diagram:	V	Orbitrol steering hydraulics
	VI	Ground drive hydraulics hydrostatic pump
	107	Oil drain
	110	Oil tank
	205	Working hydraulics pump
	209	Ground drive feed pump
	211	Ground drive variable displacement pump
	218	Steering hydraulics pump
	323	Steering hydraulic cylinder
	609	Orbitrol steering system rotary valve
	718	Ground drive feed circuit cold start injector	...................... 25 bar
	725	Steering double shock valve ......................................	150+15 bar
	726	Steering pressure relief valve.........................................	90+5 bar
	728	Anti-cavitation valve (non-return valve)
	742	Steering safety valve
	909	Steering hydraulics measuring point

Pressure measurement : Neutral circulation pressure = < 20 bar

System pressure = 90+5 bar

Shock valve = 150+15 bar

Note:	These values refer to measurements made at the max. no-load
	speed of the diesel engine and a hydraulic oil operating
	temperature of approx. 60°C.

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TIC	Dominator 140 - 150	Hydraulic System
Description of function:
Steering	In the neutral steering position, oil flows freely through the
	steering control unit = Orbitrol (609).
	Turning the steering wheel to one direction causes the spools to rotate

relative to each other.

At a rotation of 1.5°, the channels to the chambers start opening. At 4°, the neutral position channels are completely closed.

At 6°, the channels to the chambers are fully open.

The rotation of the spools relative to each other is limited to ± 8°. A feed of pressurized oil to the rotor set has the following effects: Rotation of rotor: Feed of an oil quantity which is proportional to the

rotation into the steering cylinder, the rear wheels being influenced. An internal mechanical return from the rotor to the outside spool so that the channels in the valve are closed when the rotor rotates to the same angle as the steering wheel.

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Hydraulic System

Dominator 140 - 150

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2.2 Steering valve unit

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TIC		Dominator 140 - 150	Hydraulic System
Key to diagram:	112	Return filter (not installed)	6 cm3
	218	Steering hydraulics pump ...........................................
	229	Steering hydraulics proportioning pump
	323	Steering hydraulic cylinder
	609	Orbitrol steering system rotary valve	150+15 bar
	725	Steering double shock valve.......................................
	726	Steering pressure relief valve .....................................	90+5 bar
	728	Anti-cavitation valve (non-return valve)
	742	Steering safety valve
	909	Steering hydraulics measuring point

Steering system	Open center: with the steering in neutral position, there is a connection
	between pump P2 and the tank.
	Non reaction: when the steering is in neutral position, a force acting on
	the steered wheels does not cause any reaction on the
	steering wheel.
Valve unit	DANFOSS OSPB 125
	O = Orbit (Orbitrol)
	S = Steering
	P = Pump
	B = Version
	125 = Oil displacement in cm3/rev.
Design of valve unit	The steering valve consists of a steering hydraulics proportioning pump
	(229) and an Orbitrol rotary valve (609).
	The Orbitrol rotary valve (609) is actuated by the steering gear shaft.
	Continued rotary movement of the steering gear shaft drive the steering
	hydraulics proportioning pump (229) by means of a socket-type shaft.

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Dominator 140 - 150

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2.3 Function of steering

Neutral

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Description of function:
Neutral	In neutral position, the oil is directed back to the tank via the steering
	safety valve (742) and the Orbitrol rotary disc (609) (open center).

The circulation pressure must not exceed 20 bar.

Both sides of the steering hydraulic cylinder (323) are shut off by the Orbitrol rotary disc (609). Pressure peaks due to external forces on the steered axle are relieved to the tank via the steering double shock valves (725) (non reaction).

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Hydraulic System

Dominator 140 - 150

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Steering actuation

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Description of function:
Steering actuation	When actuating the steering to one or another direction, the Orbitrol rotary
	disc (609) is rotated by up to 8° relative to the outside spool. During this
	process, the return line from the steering hydraulics pump (218) to the
	tank is closed and the connection to the steering hydraulics proportioning
	pump (229) is released.
	Via the steering hydraulics proportioning pump (229) and the Orbitrol
	rotary disc (609), the volume flow is released as a function of the sense of
	rotation, path and speed of steering wheel motion to the ram or the ram
	ring surface of the steering hydraulic cylinder (323). Here, the displacing
	surface of the steering hydraulic cylinder (323) is connected with the
	return line to the tank via the Orbitrol rotary disc (609).
	As soon as there is no more steering motion, leaf springs bring the outer
	rotary disc of the Orbitrol rotary disc (609) back to neutral position. Now
	both sides of the steering cylinder are shut off again and the connection
	from the steering hydraulics pump (218) to the tank is re-established.
Emergency steering	When the steering system is not supplied any more by the steering
	hydraulics pump (218), the steering safety valve (742) closes and thus
	ensures that no oil will escape from the steering system.

When the steering is actuated, the inner and outer disc of the Orbitrol rotary disc (609) are rotated relative to each other. Now the oil can be conveyed from one side of the steering hydraulic cylinder (323) via anticavitation valve (non-return valve) (728) to the other side through human power by the drive of the steering hydraulics proportioning pump (229).

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Hydraulic System	Dominator 140 - 150	TIC
2.4 Checking
the steering
Steering gear shaft	Height play = 0.1 to 0.3 mm
	Clearance from bottom inside rotary disc = 3 mm
Return	When the steering wheel is actuated with the diesel engine shut off, the
	leaf springs in the rotary disc must bring the steering wheel back to its
	neutral position.
Reaction	If steering reaction is insufficient, internal leaks in the steering system
	must be checked. To do this, disconnect the lines from the steering
	cylinder and plug them tightly with plugs.
	With the oil at operating temperature and at max. no-load speed of the
	diesel engine, the steering wheel must not allow more than 4 turns/minute
	in both directions when using a force of approx. 25 Nm.
	When the actual number of turns is more than 4/minute, check the
	steering valve for leaks.
	When the actual number of turns is below 4/minute, check the steering
	cylinder for leaks.
Power	In case of steering forces above 25 Nm, check tyre size and pressure,
	condition of the cylinder rod and if stub axles move smoothly.

A pressure test at the steering hydraulics measuring port must show the value 90+5 bar.

To this end move the steering wheel up to the stop and hold it in this position.

Adjusting the pressure relief valve on the machine in built-in condition is not possible.

Important! Any installation work on the steering hydraulics must be followed by venting the system on both hydraulic lines of the steering cylinder with the diesel engine running.

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TIC	Dominator 140 - 150	Hydraulic System

Chapter 3

Working hydraulics

3.1	Working hydraulics circuit diagram ..........................................	3-4
3.2	Main valve................................................................................	3-6
	with master valve,
	pressure relief valve,
	raise/lower front attachment ....................................................	3-6

3.3Threshing drum speed control

	3/3 way solenoid valve Y19/Y20............................................	3-12
	Hydraulic cylinder with rotary coupling ..................................	3-14
3.4	Vertical reel adjustment .........................................................	3-16
	3/3 way valve Y22/Y23 ..........................................................	3-16
	Hydraulic cylinders.................................................................	3-18
3.5	Horizontal reel adjustment .....................................................	3-20
	4/3 way valve Y24/Y25 ..........................................................	3-20
	Hydraulic cylinders.................................................................	3-22
	Lock-up valve unit (734) ........................................................	3-24
3.6	Swinging the grain tank unloading tube.................................	3-26
	4/3 way valve Y33/Y34 ..........................................................	3-26
	Hydraulic cylinders.................................................................	3-28
	Lock-up valve unit (734) ........................................................	3-30
3.7	Reverse front attachment ......................................................	3-32
	3/2-way valve Y86..................................................................	3-32
	Hydraulic cylinders.................................................................	3-34

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Hydraulic System

Dominator 140 - 150

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