D7R Series 2 Track-Type Tractor Hydraulic System Caterpillar


Piston Pump (Implement)

Usage:

D7R II ABJ



Illustration 1g01232872

(1) Apply 9S-3263 Thread Lock Compound to the outside diameter of the seal.

(2) Apply 4C-9507 Retaining Compound to the outside diameter of ring.

(3) Torque for plug ... 70 ± 10 N·m (50 ± 7 lb ft)

(4) Use plates for proper adjustment, as required.

(5) 190-8830 Spring

Free length ... 74 mm (2.913 inch)
Outside diameter ... 56.3 mm (2.217 inch)

(6) Apply 4C-9507 Retaining Compound to the threads. Torque for four bolts ... 55 ± 10 N·m (40 ± 7.5 lb ft)

(7) Pressure and flow compensator valve

(8) End play of the shaft with adjusted shim pack thickness ... 0.03 ± .02 mm (0.0012 ± 0.0008 inch)

(9) 195-6930 Spring

Free length ... 134.5 mm (5.295 inch)
Outside diameter ... 28 mm (1.102 inch)

(10) Use shims for proper adjustment, as required.

(11) Apply 5P-3413 Sealant to the surface between the pump head and the pump housing before assembly.

(12) Torque for nine bolts ... 160 ± 30 N·m (120 ± 22 lb ft)

(13) Apply 4C-9507 Retaining Compound to the threads. Torque for two nuts ... 30 ± 7 N·m (22 ± 5 lb ft)

Table 1
Test (1) (2)     Output     Engine RPM     Pressure    
Full Speed (3)    
238 L/min (63 US gpm)    
1694    
690 kPa (100 psi)    

238 L/min (63 US gpm)
1694    
6900 kPa (1000 psi)    
Half Speed (4)    
118 L/min (31 US gpm)    
847    
690 kPa (100 psi)    

118 L/min (31 US gpm)
847    
6900 kPa (1000 psi)    
( 1 ) Clockwise rotation from position C.
( 2 ) Use SAE 10W oil at 82° ± 4°C (180° ± 7°F) for any bench test.
( 3 ) Pump at 1594 rpm
( 4 ) Pump at 797 rpm

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