SH Series Electrical Components SH Series Electrical Components

SH Series Electrical Components

1. SH-3 Series
Electrical Component OrientationElectrical Component Orientation

2. -3 Series Features
Main Computer Has increased and decreased control of
hydraulic and electrical systems
Additional Engine Computer – ECU (Engine Control
Unit) Different ECU for each model of engine (calibration
not required)
Additional Pump Mode – Auto Mode
MA’s between H & S mode - RPM’s between S & L mode
Anti-Theft Device - Not Activated
Automatic “Power-Up”
H – Automatic, S – Automatic, L – Constant, Auto Mode - Automatic
Two Speed Travel – Quantum has three speed travel

3. -3 Series Features
Does Not Require Computer Calibration -
“Automatic Adjustment”
Communication Link for “Laptop” - (Not available yet)
No Motor Driver or Throttle Motor
Four Relays - -2 series has Twelve Relays
Pressure Transducers
Main Pressure Transducers (P1 & P2)
Negative Control Pressure Transducer
Monitor is a Transmit and Receive Device –
Transmits to computer as well as receives information from
the computer

4. -3 Series Features
Four Fusible Links – -2 series has Three
Does Not Increase Pressure When Traveling -
No Power-Up
Throttle Volume Signal Goes Directly to ECU -
Not main computer
No By-Pass Switch to Main Computer
Low Idle-Up - Increased engine rpm with low coolant
temperature or low battery voltage
Trip Meter
Six Stack Solenoid Bank - -2 series has eight stack
solenoid bank. No maximum flow or negative flow control
solenoids

5. -3 Series Features
Function Shut-Down Circuit is Not Computer
or Relay Controlled
No Shut-Down Relays 1 & 2 (Live / Dead)
No 50% Swing Brake Mode - Swing brake will
release (spring applied & hydraulically released) when
swing pressure swing contacts close or P1 or P2 main
pump pressure transducers record >2175 psi.

6. SCMM Computer
Same Main
Computer for
All -3 Series
Models
Located
Behind the
Operators
Seat

7. Main Computer
Power Voltage (CN5)
–24 volts LgR 350
–Computer power – 20A
Control Voltage (CN5)
–24 volts, W 320
–Computer control – 20A
Computer Ground (CN5)
–BG 600

8. Main Computer
24 Volt Output
–Free Swing Solenoid
–Travel Alarm
–Swing Brake Solenoid
–High Speed Travel Solenoid
–Cushion Solenoid
–Swing Lock Solenoid
–Battery Relay

9. Main Computer
5 Volt Circuit Items (not complete)
-Engine Oil Pressure- Pressure Transducers
-Travel Pressure Switch
-Free Swing Switch
-Auto Mode Switch
-Breaker Pressure Switch
-Work Mode switch
-Low Coolant Sensor
-Cushion Switch
-Swing Pressure switch
-Upper Pressure Switch
-One-Touch Idle Switch
-Travel Mode Switch

10. Engine Control Unit (ECU)
Located Behind the
Operators Seat and
Main Computer
Four Connectors

11. Engine Control Unit (ECU)
I
N
P
U
T

S
I
D
E
Ignition Switch
Throttle Volume
O
U
T
P
U
T

S
I
D
E
To Electronic Governor
Page 1 of 2

12. Engine Control Unit (ECU)
To Electronic Governor
Page 2 of 2
Tech 2 Reader
Communication
Link to Main
Computer
I
N
P
U
T

S
I
D
E
O
U
T
P
U
T

S
I
D
E

13. Engine Control Unit (ECU)
Main Power (CN8)
–24 volts R 310
–Engine Computer – 20A
Computer Ground (CN8)
–BG 630

14. Engine Control Unit (ECU)
Communication Link
for
“Tech 2” Reader

15. Engine Control Unit (ECU)
Communication Link
for
Laptop Computer
Software Not Yet
Available

16. Relay Panel

17. Fuse Panel
Located Behind
Operators Seat

18. Pressure Switches
Travel Pressure
Switch Wires:
YG 431 / BG651
Upper Pressure
Switch Wires:
LG 430 / BG 650
R/H Side of Control Valve
130 LX
and
160 LX

19. Pressure Switches
Travel Pressure
Switch Wires:
YG 431 / BG651
Upper Pressure
Switch Wires:
LG 430 / BG 650 R/H Side of Control Valve
SH200
and
SH220

20. Windshield Washer Pump
Wires:WV 930
BW 630

21. Backup rpm Speed Sensor
Primary RPM Sensor is Located in
Electronic Governor - Wires: Y 486 / L 496
SH120
and
SH160
Wires:
O 487
W 497

22. Backup rpm Speed Sensor
Primary RPM Sensor is Located in
Electronic Governor - Wires: Y 486 / L 496
Wires:
O 487
W 497
SH200
and
SH220

23. Engine Oil Pressure Switch
Wires:
BG 640
LgY 436
SH120
and
SH160

24. Engine Oil Pressure Switch
Wires:
BG 640
LgY 436
SH200
and
SH220

25. Proportional Solenoid Valve
Located on Back Side
of Main
Pump Regulator
SH120
and
SH160
Wires:
YR 940
BY 941
Main Pump

26. Proportional Solenoid Valve
SH200
and
SH220
Wires:
YR 940
BY 941
Main Pump

27. Engine Shutdown Motor
SH120 and SH160

28. Engine Shutdown Motor
SH200 and SH220

29. Six Stack Solenoid Valve
SH120
and
SH160

30. Six Stack Solenoid Valve
SH200
and
SH220

31. Pressure Transducers
P1
P2
Main Pump
SH120 and SH160

32. Pressure Transducers
P1
P2
Main Pump
SH200 and SH220

33. Pressure Transducer
Negative Control
SH120 and SH160

34. Pressure Transducer
Negative Control
SH200 and SH220

35. Pressure Transducers
Ground Wires
BW 420, BY 421, BL 422
P1
P2
5-Volt Circuit
400, 401, 402

36. Hydraulic Oil Temperature Sensor
Located Behind
Suction Tube
SH120 and SH160

37. Hydraulic Oil Temperature Sensor
SH200 and SH220

38. Electronic Governor
Governor
Wire
Harness

39. Electronic Governor

40. Engine Control Q Adjustment Resister

41. Engine Temperature Coolant Sensor
SH120 and SH160

42. Engine Temperature Coolant Sensor
SH200 and SH220

43. Engine Fuel Temperature Sensor
SH120 and SH160

44. Engine Fuel Temperature Sensor
SH200 and SH220

45. Battery Relay / Fusible Links
Under
Cover
Cover
Removed
SH120 and SH160

46. Battery Relay
SH200 and SH220

47. Fusible Links
SH200 and SH220

48. Engine Coolant Level Switch
SH120 and SH160

49. Engine Coolant Level Switch
SH200 and SH220

50. A/C Pressure Switch
SH120 and SH160

51. A/C Pressure Switch
SH200 and SH220

52. Swing Pressure Switch
SH120 and SH160

53. Swing Pressure Switch
SH200 and SH220

54. Free Swing Solenoid
SH120 and SH160

55. Free Swing Solenoid
SH200 and SH220

56. Air Filter Sensor
SH120 and SH160
This sensor
is no longer
monitored by
the computer.
It is not an
electrical
component.

57. Air Filter Sensor
SH200 and SH220
This sensor
is no longer
monitored by
the computer.
It is not an
electrical
component.

58. Service Connectors
1. For Emergency Stop Motor
Kit P/N KHP1574

59. Service Connectors
2. For Harness End
of
Emergency Stop Motor
Kit P/N KHP1574

60. Service Connectors
3. For Solenoid Valve
and
Fuel Gauge
Kit P/N KHP1574

61. Service Connectors
4. For Proportioning Valve
Kit P/N KHP1574

62. Service Connectors
5. For Pressure Switch
Kit P/N KHP1574

63. Service Connectors
6. For Harness End
of
Pressure Switch
Kit P/N KHP1574

64. Service Connectors
7. For Air-Conditioning Evaporator
Kit P/N KHP1574

65. Service Connectors
8. For Hydraulic Oil Temperature
and
Engine Coolant Temperature Senders
Kit P/N KHP1575

66. Service Connectors
9. For Engine Speed Detector
Kit P/N KHP1576

67. Service Connectors
10. For Pressure Detector
Kit P/N KHP1577

68. Service Connectors
11. For Engine Governor (RED4)
Kit P/N KHP1578

69. Service Connectors
12. For Engine Governor (RED4)
Kit P/N KHP1579

70. Service Connectors
13. For Engine Governor (RED4)
Kit P/N KHP1580