797F and 797F XQ Off-Highway Truck Hydraulic System Caterpillar


Control Valve (Hoist)

Usage:

797F LAJ


Illustration 1g03745544

Table 1
Specification for 250-7622 Control Valve Gp 
Item  Qty  Part  Specification Description 
266-7234 Pilot Control Actuator Gp  Use the following procedure to install the pilot control actuator group:

1. Install the pilot control actuator group.
2. Rotate the solenoid group at the pilot control actuator group to 180 degrees.
3. Tighten the bolts on the solenoid group to 3.00 ± 0.25 N·m (26.55 ± 2.21 lb in)
153-9989 Plug  Torque to 420 ± 63 N·m (310 ± 46 lb ft)
9L-9188 Spring  Length under test force is 43.2 mm (1.70 inch).
Test force is 15.6 ± 1.3 N (3.5 ± 0.3 lb).
Free length after test is 57.9 mm (2.28 inch)
3G-5003 Bushing  Inside diameter is 19.074 ± 0.005 mm (0.7509 ± 0.0002 inch).
Outside diameter is 23.033 ± 0.005 mm (0.9068 ± 0.0002 inch)


Illustration 2g03745545
Section A-A

Table 2
Item  Qty  Part  Specification Description 
326-5212 Coil  Operating voltage is 24 VDC.
Resistance at 25 °C (77 °F) is 5.0 ± 0.3 Ohms. 
316-1438 Cartridge As  Torque to 35 ± 3 N·m (26 ± 2 lb ft)
121-2051 Spring  Length under test force is 46.0 mm (1.81 inch).
Test force is 21.00 ± 0.63 N (4.72 ± 0.14 lb).
Free length after test is 53.53 mm (2.107 inch)
198-2914 Nut  Torque to 20 ± 3 N·m (177 ± 27 lb in)
177-1405 Spring  Length under test force is 8.20 mm (0.323 inch).
Test force is 18.41 ± 0.55 N (4.14 ± 0.12 lb).
Free length after test is 12.29 mm (0.484 inch)
10  118-5087 Spring  Length under test force is 50.0 mm (1.97 inch).
Test force is 243 ± 19 N (55 ± 4 lb).
Free length after test is 63.5 mm (2.50 inch)
11  118-5086 Spring  Length under test force is 55.0 mm (2.17 inch).
Test force is 438 ± 35 N (98 ± 8 lb).
Free length after test is 76.2 mm (3.00 inch)

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