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
