299D and 299D XHP Compact Track Loaders and 272D and 272D XHP Skid Steer Loaders Machine Systems Caterpillar


Piston Pump (Hydrostatic)

Usage:

299D HCL



Illustration 1g01560184



Illustration 2g01560193

Table 1
Specifications for 258-2405 Piston Pump Gp    
Item     Qty     Part     Specification Description    
-     The rotation of pump is Clockwise.    
-     The displacement per revolution is
45 ± 1 cc (2.75 ± 0.06 cu in).    
-     The maximum continuous speed is 3200 rpm.    
-     The intermediate over speed is 3600 rpm.    
1     2     Torque to
10 ± 1 N·m (90 ± 9 lb in).    
2     1     278-8746 Relief Valve Gp     Torque to
44 ± 3 N·m (32 ± 2 lb ft).
Maximum pressure at
56 L/min (14.8 US gpm)
3200 kPa (464 psi).
Minimum pressure at
20 L/min (5.3 US gpm)
2600 kPa (377 psi).    
3     1     278-8743 Solenoid Valve Gp     Torque to
45 ± 5 N·m (33 ± 4 lb ft).    
4     4     278-8745 Relief Valve Kit     Torque to
80 ± 10 N·m (60 ± 7 lb ft).    
5     12     Torque to
13 ± 1 N·m (115 ± 9 lb in).    
6     12     Torque to
8 ± 1 N·m (70 ± 9 lb in).    
7     2     Torque for swashplate feedback pins
25 ± 2 N·m (220 ± 18 lb in).    
8     6     Torque to
110 ± 10 N·m (80 ± 7 lb ft).    
9     8     Torque to
14 ± 1 N·m (125 ± 9 lb in).    

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