TH220B, TH330B and TH340B Telehandlers Hydraulic System General Information Table Caterpillar


General Information Table
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Table 1
Hydraulic Specifications    
Pressures    
Description     Model    
TH220B TH330B     TH340B    
Steering Signal Pressure    
16250 ± 750 kPa (2355 ± 110 psi)    

16250 ± 750 kPa (2355 ± 110 psi)    

16250 ± 750 kPa (2355 ± 110 psi)    
Margin Pressure    
2200 ± 100 kPa (320 ± 15 psi)    

2200 ± 100 kPa (320 ± 15 psi)    

2200 ± 100 kPa (320 ± 15 psi)    
Load Sensing Pressure    
22800 ± 500 kPa (3300 ± 72 psi)    

22800 ± 500 kPa (3300 ± 72 psi)    

22800 ± 500 kPa (3300 ± 72 psi)    
Maximum Pump Pressure    
25000 ± 500 kPa (3626 ± 73 psi)    

25000 ± 500 kPa (3626 ± 73 psi)    

25000 ± 500 kPa (3626 ± 73 psi)    
Standby Pressure    
4500 ± 1000 kPa (650 ± 145 psi)    

4500 ± 1000 kPa (650 ± 145 psi)    

4500 ± 1000 kPa (650 ± 145 psi)    
Pressure Reducing Valve (Pilot Oil Pressure at Standby)    
3450 ± 150 kPa (500 ± 22 psi)    

3450 ± 150 kPa (500 ± 22 psi)    

3450 ± 150 kPa (500 ± 22 psi)    
Pressure Reducing Valve (Pilot Oil Pressure at Stall)    
3450 ± 150 kPa (500 ± 22 psi)    

3450 ± 100 kPa (500 ± 15 psi)    

3450 ± 150 kPa (500 ± 22 psi)    
Auxiliary Pressure    
21000 ± 500 kPa (3045 ± 73 psi)    

21000 ± 500 kPa (3045 ± 73 psi)    

21000 ± 500 kPa (3045 ± 73 psi)    
Hoist Pressure for Trailer    
25000 ± 500 kPa (3625 ± 72 psi)    

25000 ± 500 kPa (3625 ± 72 psi)    
N/A    
Braking pressure for Trailer    
13500 ± 1500 kPa (1950 ± 220 psi)    

13500 ± 1500 kPa (1950 ± 220 psi)    
N/A    
Implement Oil Temperature    
55° ± 10°C (131° ± 18°F)    

55° ± 10°C (131° ± 18°F)    

55° ± 10°C (131° ± 18°F)    
Flow Rate    
Auxiliary Flow Rate (high idle)    
60 ± 5 L/min (16 ± 1.3 US gpm)    

60 ± 5 L/min (16 ± 1.3 US gpm)    

60 ± 5 L/min (16 ± 1.3 US gpm)    

Reference: For more information about implement oil, see Operation and Maintenance Manual, "Lubricant Viscosities" for your machine.

Table 2
Pressure of the Fan Pump and Speed of the Fan Motor    
Engine Speed     Pump Pressure     Speed of the Fan Motor    
Low Idle    
4000 ± 200 kPa (580 ± 30 psi)    
1230 ± 50 RPM    
High Idle    
15000 ± 200 kPa (2175 ± 30 psi)    
2400 ± 50 RPM    
Fan Motor in Reverse or Counterclockwise Direction    
Low Idle    
4000 ± 200 kPa (580 ± 30 psi)    
1230 ± 50 RPM    
High Idle    
14500 ± 200 kPa (2100 ± 30 psi)    
2840 ± 50 RPM    

Note: Refer to Operation and Maintenance Manual, SEBU7708, "Operator Controls" for the proper operation of the reverse switch.

Table 3
Cycle Times for Implement Functions (Seconds)
Engine at high idle and the hydraulic oil temperature above
45 °C (113 °F)    
Function     Model    
TH220B TH330B     TH340B    
Boom Raise     4 - 6     6 - 8     6 - 8    
Boom Lower     3 - 5     5 - 7     4 - 6    
Boom Extend     4 - 6     5 - 7     8 - 11    
Boom Retract     4 - 6     5 - 7     5 - 7    
Coupler Tilt Backward     2 - 3     2 - 3     2 - 3    
Coupler Tilt Forward     2 - 3     2 - 3     2 - 3    
Frame Level
Left to Right    
N/A     N/A     8 - 17    
Frame Level
Right to Left    
N/A     N/A     8 - 17    

Table 4
Cycle Time for Steering (Seconds)    
Mode     Min Lock to Lock Cycle Time    
Two-Wheel Steer     2 - 4    
Crab Steer     2 - 5    
Circle Steer     2 - 5    

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