Main Hydraulic Pump
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| Illustration 1 | g00888781 |
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| NOTICE |
|---|
All pump lines and pump housing must be filled with oil prior to start-up. Failure to provide proper oil fill may result in system damage. |
The following table gives the pressure and flow values for the bench test specifications at 2500 rpm.
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| Pressure | Flow | ||||||
|---|---|---|---|---|---|---|---|
| P1 | P2 | P3 | P4 | Q1, Q2 | Q3 | Q4 | |
| a | 0.0 MPa (0.0 psi) | 0.0 MPa (0.0 psi) |
0.98 MPa (142.14 psi) |
3.43 MPa (497.48 psi) |
44.75 ± 0.8 L/min (11.82 ± 0.21 US gpm) |
10 L/min (2.6417 US gpm) minimum |
|
| b | 11.5 MPa (1667.94 psi) |
11.5 MPa (1667.94 psi) |
0.98 MPa (142.14 psi) |
3.43 MPa (497.48 psi) |
43.3 L/min (11.44 US gpm) minimum |
||
| c | 19.5 MPa (2828.24 psi) |
19.5 MPa (2828.24 psi) |
0.98 MPa (142.14 psi) |
3.43 MPa (497.48 psi) |
20.0 L/min (5.28 US gpm) minimum |
||
| d | 24.5 MPa (3553.43 psi) |
24.5 MPa (3553.43 psi) |
0.98 MPa (142.14 psi) |
3.43 MPa (497.48 psi) |
13.5 ± 2.0 L/min (3.57 ± 0.53 US gpm) |
||
| e | 0.0 MPa (0.0 psi) |
0.0 MPa (0.0 psi) |
20.6 MPa (2987.78 psi) |
3.43 MPa (497.48 psi) |
38.0 L/min (10.04 US gpm) minimum |
||
| f | 6.0 MPa (870.23 psi) |
6.0 MPa (870.23 psi) |
20.6 MPa (2987.78 psi) |
3.43 MPa (497.48 psi) |
21.0 L/min (5.55 US gpm) minimum |
||
| g | 17.0 MPa (2465.65 psi) |
17.0 MPa (2465.65 psi) |
20.6 MPa (2987.78 psi) |
3.43 MPa (497.48 psi) |
5.0 L/min (1.32 US gpm) minimum |
40.8 L/min (10.78 US gpm) minimum |
|
| h | 24.5 MPa (3553.43 psi) |
24.5 MPa (3553.43 psi) |
20.6 MPa (2987.78 psi) |
3.43 MPa (497.48 psi) |
4.0 ± 1.0 L/min (1.06 ± 0.26 US gpm) |
||
(1) Swing Pump
- Type of pump ... Gear
- Displacement at port 3 ... 16.8 cc/rev
(2) Torque for three plugs ... 29 ± 3 N·m (21 ± 2 lb ft)
(3) Main pump
- Type of pump ... Axial piston (variable displacement)
- Displacement at port 1 ... 17.9 cc/rev
- Displacement at port 2 ... 17.9 cc/rev
- Displacement at port 1 ... 17.9 cc/rev
(4) Torque for two screws ... 6 ± 1 N·m (4.4 ± 0.7 lb ft)
(5) Torque for plug ... 57 ± 6 N·m (42 ± 4 lb ft)
(6) Torque for two bolts ... 44 ± 4 N·m (32 ± 3 lb ft)
(7) Pilot Pump
- Type of pump ... Trochoid
- Displacement at port 4 ... 4.9 cc/rev
(8) Torque for two orifices ... 2 ± 1 N·m (1.5 ± 0.7 lb ft)
(9) Torque for four bolts ... 107 ± 11 N·m (79 ± 8 lb ft)
(10) Torque for nut ... 16 ± 2 N·m (12 ± 1 lb ft)
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