Section 6

GMK II Megastrut Suspension Controls

TRAINING INSTITUTE

Suspension Control Panel

TRAINING INSTITUTE

Suspension Control Module

.A9 Carrier Enclosure Right Side

E1 E2 E3 E4 E5 E6 E7 E8

X1

X2

A1 A2

E9 E10 E11 E12 E13 E14 E15 E16

A3 A4 A5 A6 A7 A8

Electronic Suspension Control

Unlocking Suspension

Suspension Lock/Unlock Suspension Locked

Indicator Lamp (H18)

Selector Switch (S8)

Suspension Lock/Unlock Suspension Unlocked

Indicator Lamp (H18)

Selector Switch (S8)

Now lets see what happened…

Suspension Locked -F1.6

-F1.3 Schem. 3008087 Pg.2

.A5 When K15 is activated the contacts allow a ground to power the K40, K41, K42 and K43 relay coils (found on page 4 enclosure .A9)

S8 1

0 1

2 1

1 7

These coils send power to Y03 and Y04 allowing axles 1,2 & 3 to share oil during Off-the-Road Operation

1

8

2

10

K15 K15

K5 To Enclosure .A9 Page 4.14

K6 P P

-Y61

-Y62

-Y68 Y68

-Y66 Y66

Left Accumulator

Concept Drawing Only!

Right Accumulator

2-5 Axle Block

K26 1 Axle Block

2-5 Axle Block

1 Axle Block

P

Y66 and Y68 are also powered to permit an extra accumulator on the rear axles to improve Offthe-Road suspension

S1

-K15

-F5 1

.A9

K14

S1

K26

K 30

Allison Trans Inhibit Ground Signal

K40 K41 K41 K42 K42 K43 K43 K40

K26

Auto Level

Up/Down

0 1

S8

0 1

0 1

0 1

0 1

0 1

S7

S3

S2

S4

S5

S6

0 1

Front

Right

Rear

Level

Left H1

H2

All Raise/ Lower

K30

H3

Electronik Suspension Control Unit K41 br

bl

-B1

br

bl

-B4

br

bl

-B3

br

K40

K42

K43

bl

-Y66 sw

sw

Rear Left

-A2

br

-8Y1 Front Right

bl

sw

-Y01

-A1

br

Front Left

bl

sw

-A4

br

Rear Right

bl

sw

Carrier Suspension Circuit

-A3

-Y03 -Y03 br

Rear Left

bl

sw

-Y68

-Y02

-Y04 -Y04

-Y06

-Y05

4 - 5 Axle Left

Rear Right

1 Axle Right

sw

2 - 3 Axle Right

Front Left

1 Axle Left

sw

2 - 3 Axle Left

Front Right

Schem. 3008087 Pg.4

4 - 5 Axle Right

-B2

Suspension Unlocked -F1.6

Schem. 3008087 Pg.2

-F1.3

.A5 S8 1

0 1

2 1

1 7

1

8

2

10

K14 K14

K15 K15

-Y5 K5 To Enclosure .A9 Page 4.14

K6 K6 P P

-Y61 -Y61

1 Axle Block

-F5 1 Suspension Unlocked S1 provides Ground K 30

Left Accumulator

Right Accumulator

2-5 Axle Block

K26 K40

2,

(from enclosure .A5, Page

K26

-Y68 -Y68 Y68

Y66 -Y66 -Y66

K26

Concept Drawing Only!

.A9

-Y62 -Y62

1 Axle Block

2-5 Axle Block

P

K41

K42

S1

Allison Trans Inhibit Ground Signal

K43

grid 1) Auto Level

Up/Down

0 1

S8

0 1

0 1

0 1

0 1

0 1

S7

S3

S2

S4

S5

S6

0 1

Front

Right

Rear

Level

Left H1

H2

All Raise/ Lower

K30

H3

Electronik Suspension Control Unit K41

sw

-B4

br

Rear Right

bl

-B3

sw

br

sw

Rear Left

-A2

br

-8Y1 Front Right

K40

K42

K43

bl

bl

sw

-Y01

-A1

br

Front Left

bl

sw

-A4

br

Rear Right

bl

sw

Carrier Suspension Circuit

-A3

-Y03 br

Rear Left

bl

sw

-Y02

-Y04

-Y06

-Y05

Schem. 3008087 Pg.4

4 - 5 Axle Right

Front Left

bl

4 - 5 Axle Left

br

1 Axle Right

sw

-B1

2 - 3 Axle Right

Front Right

bl

1 Axle Left

br

2 - 3 Axle Left

-B2

Group Exercise #1: The Operator will raise the Front Struts Axles 1, 2 and 3 Top View

Side View

Suspension Control Panel Step 1 : Ensure Suspension is unlocked! Step 2 : Arm Suspension Control Panel, by turning and locking key Step 3 : Select “Raise” on the Raise/Lower Direction Rocker Switch Step 4 : Push “Front” on the Front Strut Momentary Switch Indicator Lamp (H18)

Selector Switch (S8)

Suspension Control Panel

Indicator Lamp (H18)

Selector Switch (S8)

-F5 1

.A9

S1

K26

K 30

K40

K26 K26

K41

K42

Allison Trans Inhibit Ground Signal

K43

Auto Level

Up/Down 0 1

0 1

0 1

0 1

S7

S3

S2

S4

S5

S6

0 1

Front

Right

Rear

Level

Left H1

Front Right

bl

sw

br

Front Left

bl

sw

br

Rear Right

bl

sw

br

sw

Rear Left

-Y01

-Y03

Front Right

sw

br

Front Left

bl

sw

br

Rear Right

bl

sw

Carrier Suspension Circuit

br

Rear Left

bl

sw

2 - 3 Axle Left

-8Y1

bl

1 Axle Left

This remains in effect until-A1the S1-A4Key is disengaged -A2 -A3 and removed from switch. br

K40

K42

K43

bl

-Y02

-Y04

-Y06

-Y05

Schem. 3008087 Pg.4

4 - 5 Axle Right

br

Engage S1 Key SwitchUnit Electronik Suspension Control Suspension Unlocked Transmission Ground Signal provides Ground When S1 Switch is engaged a ground is providedK41the -B1 -B4 -B3 transmission that inhibits upshifting beyond 2nd Gear Forward

H3

4 - 5 Axle Left

-B2

H2

All Raise/ Lower

K30 K30

1 Axle Right

S8

0 1

2 - 3 Axle Right

0 1

Which LED’s The A2 Output will beare Illuminated?

The A3 Output will be illuminated indicating illuminated the Front Leftindicating Solenoids the Front Right Solenoids are areThe Input Signals? will be What theE9Input What areare theenergized Output Signals? energized E1 illuminated indicating front E2 struts have been engaged The A8E3 Output will be E4 illuminated indicating E5 The E15 Input will be the 8Y1 E6 Solenoid is are E7 illuminated indicating energized A1 E8 indicates the This LED raise A2 has been engaged module has been powered E9

X1

X2

A3

E10 E11 E12 E13 E14 E15 E16

A4 A5 A6 A7 A8

Suspension Control Module

In the previous exercise we saw the front 3 axles raised manually… In the next exercise the crane carrier will start with the front 3 axles raised and rear 2 axles lowered. The operator will now auto-level the crane carrier.

Group Exercise #2: The Operator will Auto-Level the Crane Carrier

Top View

Side View

?

High

?

?

Low

Suspension Control Panel The Auto-Level Indicator Lamp comes on when the carrier is seeking level.

control panel, Step 3 The :Using Step 2 :Lampthe goes out when level Step 1 What : Indicator steps does the is achieved. Lamp (H18) Operator take to on Select “Auto Ride Height” the Arm Suspension Control Panel, Ensure Suspension is unlocked! Auto-Level to Switch Auto Height byRide turning andRocker locking key Highway Ride Height? Selector Switch (S8)

?

Suspension Control Panel

Indicator Lamp (H18)

The Auto-Level Indicator Lamp is now out. Indicating the Crane is now level

Selector Switch (S8)

Suspension Control Panel

Your Crane is now ready for Highway Travel

Unlock and Remove Key from suspension control

Now lets see what happened…

-F5 1

.A9

K26 S1 Proximity Switch Inputs Allison Trans K26 Proximity Switch Inputs Inhibit Ground Signal B3 & B4 Upper Prox Switches, NO Proximity Switch Inputs NO B1, B2, B3 & B4 Upper Prox Switches, K 30

K40

K26

K43

Up/Down

0 1

S8

0 1

0 1

S7

0 1

0 1

Now are closed and send a signal, to the S6 S3 A2 &A1, A1 S2 A2, Lower Prox Switches, S5 A3S4Rear & A4 Lower ProxNC Switches, NC Front Right Left control module. The signal indicates the rear H1 H2 All Raise/ carrier is low K30 K30 Lower Now are Closed and send a signal to the control module. This indicates theSwitch front of the Engage S1Control Key Electronik Suspension Unit Suspension Unlocked Transmission Ground Signal carrier is high. provides Ground When S1 Switch is engaged a ground is provided K41 the K40 -B1 -B4 -B3 transmission that inhibits upshifting beyond 2nd Gear Forward

Level

0 1

sw

br

Front Left

bl

sw

br

Rear Right

bl

sw

br

sw

Rear Left

-Y01

-Y03

Front Right

sw

br

Front Left

bl

sw

br

Rear Right

bl

sw

Carrier Suspension Circuit

br

Rear Left

bl

sw

2 - 3 Axle Left

-8Y1

bl

1 Axle Left

This remains in effect until the S1 Key is -A3 disengaged -A2 -A1 -A4 and removed from switch. br

K42

K43

bl

-Y02

-Y04

1 Axle Right

Front Right

bl

2 - 3 Axle Right

br

H3

-Y06

-Y05

Schem. 3008087 Pg.4

4 - 5 Axle Right

0 1

-B2

K42

4 - 5 Axle Left

Auto Level

K41

The Front Struts are High the Lower Proximity Switches are tripped

(A2 & A1)

A2

B4 Upper Proximity Switches Tripped

Lower Proximity Switches Tripped

A1

B3

The Rear Struts are Low the Upper Proximity Switches are tripped

(B3 & B4)

Which LED’s are Illuminated? A4 & A5 LED’s On E2 LED On These two LED’s indicate that the A8 LED On E4LED’s LED On On control module isE1sending outputs E5 & E7 The E2 LED indicates that the E5 LED On E2 to open the solenoids at rear of Input LED On A1 Switch E3shift the A8carrier. comes on to TheProximity E4E10 LED indicates the These two LED’s indicates that the E7 LED On that E4 on the Front Left Strut is tripped The E5 LED indicates that the 8Y1 valve. This valve is Proximity Switchis E5 theA2 rear of the carrier (lower switch). B3 Proximity Switch shifted to raiseE6the rear of low. E10 Auto-Level Input LED on the Left Strut is tripped control module will TheThe E7Front LED indicates that the E7 on the Rear Left Strut is tripped the carrier comes on once Auto-Level A1issue (lower switch). address this first by E8 B4 Proximity Switch (upper switch). A2 Switch is depressed. to A4 andisA5 on theoutputs Rear Right Strut S8 Switch Energizedsending E9 A3 and A8. (upper switch). tripped E10 A4 the Suspension This signals E11 The Board Power LED is A5 E12 Control Module to begin Autoon once the E13S8 is energized A6 Leveling E14

X1

E15 E16

X2

A7 A8

Suspension Control Module

-F5 1

.A9

S1 K26 K26

Auto Level

Switch The A8, andS8 A5Auto-Level LED K26 A4 The K 30 and A2, A1 Proximity B4, B3 Allison Trans K40 K41 K42 K43 provide the needed inputs Output Signals provide Inhibit Groundto Signal Switches thethe control signals to power 8Y1, module. send input signals to the Up/Down -Y05 and -Y06 Solenoids control module S7

0 1

0 1

0 1

0 1

0 1

0 1

S8

S3

S2

S4

S5

S6

Front

Right

Rear

Level

0 1

Left H1

H2

All Raise/ Lower

K30 K30

H3

Electronik Suspension Control Unit K41

sw

-B4

br

Rear Right

bl

-B3

sw

br

sw

Rear Left

-A2

br

-8Y1 -8Y1 Front Right

K40

K42

K43

bl

bl

sw

-Y01

-A1

br

Front Left

bl

sw

-A4

br

Rear Right

-A3

bl

sw

-Y03 br

Rear Left

Carrier Suspension Circuit

bl

sw

-Y04

A4 & A5 LED’s go Out

E5 solenoid turned off. E6 E7 E8

A2 & A3 LED’s come On

E9 E10 This indicates thatE11 the front E12 carrier’s solenoidsE13 come on E14 and are allowed to drain off E15 Thereby lowering the E16front.

-Y05 -Y05

Schem. 3008087 Pg.4

Which LED’s are Illuminated? A8 LEDE1goes Out This indicatesE2that the rear E3 carriers solenoids turned off. E4that the 8Y1 This indicates

-Y06 -Y06

-Y02

X1

X2

A1 A2 A3 Rear Carrier Once the A4 raised to has been A5 Ride Height Highway A6 LED’s go out E2 and E4 A7 A8

Suspension Control Module

4 - 5 Axle Right

Front Left

bl

4 - 5 Axle Left

br

1 Axle Right

sw

-B1

2 - 3 Axle Right

Front Right

bl

1 Axle Left

br

2 - 3 Axle Left

-B2

-F5 1

.A9

S1

K26

K 30

K40

-Y01,-Y02,-Y03 and -Y04 Solenoids

K26 K26

Auto Level

K41

K42

Allison Trans Inhibit Ground Signal

K43

Up/Down

0 1

0 1

0 1

0 1

S7

0 1

0 1

These Solenoids will remain on S5 until the S6 S3 S2 S4 Front Right Rear front suspension cylinders haveLeft lowered All Raise/ K30 height. to ride K30 Lower

S8

Level

0 1

H1

H2

H3

Electronik Suspension Control Unit K41

sw

-B4

br

Rear Right

bl

-B3

sw

br

sw

Rear Left

-A2

br

-8Y1 Front Right

K40

K42

K43

bl

-Y01 -Y01

-A1

bl

sw

br

Front Left

bl

sw

-A4

br

Rear Right

bl

sw

-A3

-Y03 -Y03 br

Rear Left

bl

sw

Carrier Suspension Circuit

-Y02 -Y02

-Y04 -Y04

-Y06

4 - 5 Axle Right

Front Left

bl

-Y05

4 - 5 Axle Left

br

1 Axle Right

sw

-B1

2 - 3 Axle Right

Front Right

bl

1 Axle Left

br

2 - 3 Axle Left

-B2

Schem. 3008087 Pg.4

-F5 1

.A9

S1

K26

K 30

K40

K26 K26

Auto Level 0 1

0 1

0 1

S8

S3

S2

Front

Right

A2 & A1 Allison Trans K43 Inhibit Ground Signal Proximity Switches K41

K42

Up/Down A2 and A1 Proximity SwitchS7lines have now beenS5restoredS6to no signal Level S4 Rear Left indicating the Front CarrierH1is atH2Highway H3 All Raise/ Ride Height. Lower

0 1

0 1

0 1

0 1

K30 K30

Electronik Suspension Control Unit K41

sw

-B4

br

Rear Right

bl

-B3

sw

br

sw

Rear Left

-A2

br

-8Y1 Front Right

K40

K42

K43

bl

bl

sw

-Y01 -Y01

-A1

br

Front Left

bl

sw

-A4

br

Rear Right

bl

sw

Carrier Suspension Circuit

-A3

-Y03 -Y03 br

Rear Left

bl

sw

-Y02 -Y02

-Y04 -Y04

-Y06

-Y05

Schem. 3008087 Pg.4

4 - 5 Axle Right

Front Left

bl

4 - 5 Axle Left

br

1 Axle Right

sw

-B1

2 - 3 Axle Right

Front Right

bl

1 Axle Left

br

2 - 3 Axle Left

-B2

-F5 1

.A9

S1

K26

K 30

K40

K26 K26

K41

K42

Allison Trans Inhibit Ground Signal

K43

Auto Level

Up/Down

0 1

S8

0 1

0 1

0 1

0 1

0 1

S7

S3

S2

S4

S5

S6

0 1

Front

Right

Rear

Level

Left H1

H2

All Raise/ Lower

K30 K30

H3

Electronik Suspension Control Unit Highway Ride Height K41

-B4

br

bl

-B3

br

Once all proximity switches have Front Rear Rear returned to normal Left Right Leftand the unit is at highway ride height the H3 Yellow Lamp -A2 -A1 -A4 -A3 goes out. sw

sw

sw

br

-8Y1 Front Right

K40

K42

K43

bl

bl

sw

br

Front Left

bl

sw

br

Rear Right

bl

sw

Carrier Suspension Circuit

-Y01

-Y03 br

Rear Left

bl

sw

-Y02

-Y04

-Y06

-Y05

Schem. 3008087 Pg.4

4 - 5 Axle Right

bl

4 - 5 Axle Left

br

1 Axle Right

sw

-B1

2 - 3 Axle Right

Front Right

bl

1 Axle Left

br

2 - 3 Axle Left

-B2