D6M XL & D6M LGP TRACTORS / POWERSHIFT / 4HS00001-UP (MACHINE) ...
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Producto: TRACK-TYPE TRACTOR
Modelo: D6M TRACK-TYPE TRACTOR 4HS00644
Configuración: D6M XL & D6M LGP TRACTORS / POWERSHIFT / 4HS00001-UP (MACHINE) POWERED BY 3116 ENGINE
Operación de Sistemas
561N, 572R Series II and 572R Pipelayers and D10R, D11R, D5M, D5N, D6M, D6N,
D6R, D6R Series II, D7R, D7R Series II and D8R Series II Track-Type Tractors
Power Train Electronic Control System
Número de medio -SENR8367-21 Fecha de publicación -01/09/2015 Fecha de actualización -21/04/2021
i01993561
Solenoid Valves
SMCS - 4800-JV; 5479
Solenoid Valves for the Transmission
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Illustration 1 g00593355
Identification of the Solenoid Valves for the Transmission on the D10R
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Illustration 2 g00593358
Identification of the Solenoid Valves for the Transmission on the D11R
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Illustration 3 g00859862
Identification of the Solenoid Valves for the Transmission on the D5M, D6M, D6R, D6R Series II, D7R, D7R Series
II, and the D8R Series II
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Illustration 4 g00593426
Solenoid Valves for the Transmission on the D10R and the D11R
Illustration 5 g00636475
Solenoid Valves for the Transmission on the D5M, D6M, D6R, D6R Series II, D7R, D7R Series II, and the D8R
Series II
The transmission solenoid valves are outputs of the ECM. The ECM uses these solenoid valves to
shift the transmission. The solenoids control the hydraulic circuits that modulate transmission
clutch pressures. Each transmission clutch solenoid has a connector with two contacts. One
contact receives a signal from one of the following connector contacts of the ECM: J1-4, J1-10, J1
-17, J1-11 or J2-2. The other contact of each solenoid is connected to the return circuit of the
solenoid at J1-7 and J2-3.
Note: The solenoid coils are not designed for the operation of 24 VDC directly. The ECM sends a
24 volt PWM signal at a duty cycle which provides the necessary current to the solenoid coils. Do
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NOT activate the coils with 24 VDC (+battery). This will cause the life of the coils to be reduced
drastically. Use 12 VDC if the coils must be activated without the ECM.
The ECM applies electrical current to the appropriate transmission clutch solenoids. This is based
on the operator's request from the upshift switch, the downshift switch or the transmission
direction control lever. For the movement of the machine, two clutch solenoids are activated. One
solenoid is activated for direction and one solenoid is activated for speed. For NEUTRAL
operation, only the solenoid for the third gear clutch is activated. None of the solenoids for the
direction clutch are activated while the transmission is in NEUTRAL.
Note: When the ECM is in component data display mode, a value for the current that is being sent
to the solenoid is shown to service personnel. For more information, see System Operation,
"Calibration Operation".
The Power Train Electronic Control System performs the function for the shifting of the
transmission on two different types of transmissions. Each type of transmission has a different
method of modulating the transmission clutch engagement. The two methods of modulating the
clutch engagement are listed below:
• Electronic Clutch Selection
• Electronic Clutch Pressure Control (ECPC)
Electronic Clutch Selection (D10R and D11R)
For the Electronic Clutch Selection method, the ECM uses the transmission solenoid valves to
operate hydraulic modulating valves which control transmission clutch pressures. These solenoid
valves are the on/off type. However, the ECM uses a pulse width modulated signal (PWM) in
order to energize the solenoid and the ECM uses a PWM signal in order to de-energize the
solenoid. The ECM energizes these solenoids with a PWM signal of sufficient duty cycle. The
electrical current is not modulated. The ECM de-energizes these solenoids with a PWM signal
which has very little duty cycle.
Electronic Clutch Pressure Control (ECPC) for the D5M, D5N, D6M, D6N,
D6R, D6R Series II, D7R, 572R, D7R Series II, 572R Series II and the D8R
Series II
For the Electronic Clutch Pressure Control (ECPC), the ECM uses the transmission solenoid
valves in order to modulate the oil pressure to each transmission clutch directly. The solenoid
valves are the proportional type. The ECM uses a pulse width modulated signal (PWM) in order to
vary the current to the solenoid. The solenoid current determines the amount of oil pressure that is
applied to the clutch. The distance of travel of the plunger is proportional to the electrical current
of the solenoid. The position of the plunger controls the amount of oil pressure and the amount of
clutch engagement. An increase in electrical current will open the solenoid valve further. This
causes an increase in oil pressure and an increase in clutch engagement.
Solenoid Valves for Steering and Braking
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Illustration 6 g00858897
Solenoid Valves for Steering and Braking on fingertip-control machines and electronic clutch brake machines
(1) Solenoid Valve (Parking Brake)
(2) Solenoid Valve (Right Steering Brake)
(3) Solenoid Valve (Right Steering Clutch)
(4) Solenoid Valve (Secondary Brake)
(5) Solenoid Valve (Left Steering Brake)
(6) Solenoid Valve (Left Steering Clutch)
Illustration 7 g00858897
Solenoid Valves for Steering and Braking on finger tip control machines and electronic clutch brake machines for the
M series track-type tractor
(1) Solenoid Valve (Parking Brake)
(2) Solenoid Valve (Left Brake).
(3) Solenoid Valve (Left Clutch)
(4) Solenoid Valve (Secondary Brake)
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(5) Solenoid Valve (Right Brake)
(6) Solenoid Valve (Right Clutch)
Note: During normal operation, the solenoid valves for the parking brake (1) and the solenoid
valves for the secondary brake (4) are not controlled by the ECM. These solenoid valves are
controlled by the parking brake switch and the service brake pedal switch.
Solenoid Valve (Left Steering Clutch)
Solenoid Valve (Right Steering Clutch)
Illustration 8 g00858931
Solenoid valves for the left steering clutch and the right steering clutch
The solenoid valves for the left steering clutch and the right steering clutch are outputs of the
ECM. The ECM uses these solenoid valves to steer the machine. The solenoids control the amount
of oil pressure that is applied to the corresponding steering clutch. Each solenoid for the steering
clutches has a connector with two contacts.
One contact receives a signal from the corresponding J1-12 or J1-18 connector contact of the
ECM. The other contact of each solenoid is connected to the return circuit of the solenoid at J1-7
and J2-3.
Note: The solenoid coils are not designed for the operation of 24 VDC directly. The ECM sends a
24 volt PWM signal at a duty cycle which provides the necessary current to the solenoid coils. Do
NOT activate the coils with 24 VDC (+battery). This will cause the life of the coils to be reduced
drastically. Use 12 VDC if the coils must be activated without the ECM.
The solenoids are the proportional type. The ECM uses a pulse width modulated signal (PWM) in
order to vary the current to the solenoid. The distance of travel of the plunger is proportional to the
electrical current that is sent by the ECM. The position of the plunger controls the amount of oil
pressure and the amount of clutch engagement. A DECREASE in electrical current causes a
decrease in oil pressure which DECREASES the clutch engagement.
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The operator selects the amount of clutch disengagement with the steering levers of the finger tip
control. As the steering lever is pulled, the clutch is disengaged more. The steering of the machine
will be in the direction that has the most clutch disengagement.
Note: Machines that have differential steering do not use solenoid valves for the left steering
clutch and the right steering clutch. There are no steering clutches on machines that have
differential steering. Only brake solenoids are used on machines with differential steering.
Note: When the ECM is in component data display mode, a value for the current that is being sent
to the solenoid is shown to service personnel. For more information, see System Operation,
"Calibration Operation".
Solenoid Valve (Left Brake)
Solenoid Valve (Right Brake)
Illustration 9 g00858931
Solenoid valve for the left steering brake and the right steering brake
The left and right brake solenoid valves are outputs of the ECM. The ECM uses these solenoid
valves for braking and steering of the machine. The solenoids control the amount of oil pressure
that is applied to the corresponding brake. The brakes are spring applied and hydraulically
released. Each brake solenoid has a connector with two contacts. One contact receives a signal
from the corresponding J2-13 or J2-19 connector contact of the ECM. The other contact of each
solenoid is connected to the return circuit of the solenoid at J1-7 and J2-3.
Note: The solenoid coils are not designed for the operation of 24 VDC directly. The ECM sends a
24 volt PWM signal at a duty cycle which provides the necessary current to the solenoid coils. Do
NOT activate the coils with 24 VDC (+battery). This will cause the life of the coils to be reduced
drastically . Use 12 VDC if the coils must be activated without the ECM.
The solenoids are the proportional type. The ECM uses a pulse width modulated signal (PWM) in
order to vary the current to the solenoid. The distance of travel of the plunger is proportional to the
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electrical current that is sent by the ECM. The position of the plunger controls the amount of oil
pressure and the amount of brake engagement. A DECREASE in electrical current causes a
decrease in oil pressure which INCREASES the brake engagement.
The operator selects brake engagement with the service brake pedal or with the parking brake
switch. On machines that have clutch/brake steering, the ECM controls the engagement of the left
brake or the right brake. While no braking or steering is being requested, the ECM sends the
maximum amount of electrical current to the brake solenoid valves in order to keep the brakes
released. For maximum braking, the ECM sends no electrical current to the brake solenoid valves.
The brakes are used as part of the inching operation on D5M and D6R machines that have a power
shift direct drive (PSDD).
Note: The brakes of the machine are also activated by the parking brake solenoid and the
secondary brake solenoid. See the related topics.
Note: When the ECM is in component data display mode, a value for the current that is being sent
to the solenoid is shown to service personnel. For more information, see System Operation,
"Calibration Operation".
Solenoid Valve (Parking Brake)
Solenoid Valve (Secondary Brake)
Illustration 10 g00593380
Solenoid Valves for the Parking Brake and the Secondary Brake
Solenoid Valve (Parking Brake)
During normal operation, the solenoid valve for the parking brake operates independently of the
ECM. Normally, the solenoid valve is actuated by the parking brake switch. The solenoid valve
engages the brakes. The solenoid valve redirects the hydraulic oil pressure that keeps the brakes
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disengaged. Without hydraulic oil pressure, the brakes will engage. The brakes are spring applied
and hydraulically released.
The solenoid for the parking brake has a connector with four contacts, but the solenoid only uses
two contacts. One contact receives a +battery signal from the brake backup pole of the parking
brake switch. The other contact is connected to the return circuit of the solenoid at J1-7 and J2-3.
The solenoid is rated at 24 VDC.
The parking brake solenoid is also connected to the ECM at J2-1. When the parking brake switch
is ON, the signal should measure 24 VDC. If the signal is incorrect, the ECM will energize the
parking brake solenoid. The solenoid is the on/off type.
Note: On the 572R Pipelayer, the parking brake solenoid is controlled by the ECM. The condition
of the backup pole of the parking brake determines the operation. The parking brake solenoid is
also used for the function of the secondary brake for the left brake pedal. The function of the
secondary brake solenoid operates independently of the ECM.
Note: The brakes are also activated by the secondary brake solenoid, the left brake solenoid, and
the right brake solenoid. See the related topics.
Note: When the ECM is in component data display mode, a value that indicates whether the
parking brake solenoid is ON or OFF is shown to service personnel. For more information, see
System Operation, "Calibration Operation".
Solenoid Valve (Secondary Brake)
When the machine is in normal operation, the secondary brake solenoid operates independently of
the ECM. Normally, the solenoid valve is actuated by the service brake pedal switch. The solenoid
valve engages the brakes. The solenoid valve redirects the hydraulic oil pressure that keeps the
brakes disengaged. Without hydraulic oil pressure, the brakes will engage. The brakes are spring
applied and hydraulically released.
The secondary brake solenoid has a connector with four contacts. The solenoid only uses two
contacts. One contact receives a +battery signal from the service brake pedal switch. The other
contact is connected to the return circuit of the solenoid at J1-7 and J2-3. The solenoid is rated at
24 VDC.
The secondary brake solenoid is also connected to the ECM at J1-8. When the service brake pedal
is fully depressed, the signal should read +battery voltage. If the signal is not correct, the ECM
will send +battery voltage to the secondary brake solenoid. The electrical current is not modulated.
Note: The brakes of the machine are also activated by the parking brake solenoid, the left brake
solenoid, and the right brake solenoid. See the related topics.
Note: When the ECM is in component data display mode, a value that indicates whether the
secondary brake solenoid is ON or OFF is shown to service personnel. For more information, see
System Operation, "Calibration Operation".
Solenoid Valve (Priority)
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Illustration 11 g00858955
Solenoid valve (priority)
The priority valve is found on the machines that have the ECPC.
The priority valve is an output of the ECM. The solenoid opens the priority valve and the solenoid
closes the priority valve. The solenoid has a connector with two contacts. One contact receives a
signal from the J2-7 connector contact of the ECM. The other contact of the solenoid is connected
to the return circuit of the solenoid at J1-7 and J2-3. The solenoid valve is located on the priority
valve.
The ECM uses the solenoid valve to operate the priority valve. This increases the pressure in the
low pressure oil system in order to provide additional high pressure pump flow when the flow is
needed. The solenoid valve is the on/off type.
When the ECM energizes the solenoid valve, the priority valve maintains NORMAL pressure in
the low pressure oil system. When the ECM de-energizes the solenoid valve, the priority valve
allows additional HIGH pressure in the low pressure oil system. The machine conditions which
require additional high pressure flow are listed below:
• The transmission shift is in progress.
• The transmission oil temperature is below 40 °C (104 °F).
• The engine speed is below 1300 RPM. (For the D6N, engine speed is below 900 RPM.)
• The calibration of the transmission is in progress.
If any of these conditions exist, the solenoid valve will be OFF and the pressure of the low
pressure oil system will be raised in order to provide additional high pressure flow.
Note: When the ECM is in component data display mode, a value that indicates whether the
priority valve solenoid is ON or OFF is shown to service personnel. For more information, see
System Operation, "Calibration Operation".
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