GEAR PUMP GROUP 7S9461 - Caterpillar

FOLLOW-UP CYLINDER (SENDER)
1. Follow-up cylinder (sender). 2. Bleed valve (head end circuit). 3. Bleed valve (rod end circuit).6. If the pressure was not correct when the steering wheel was turned, shims (4) under plugs (5) and (6) must be added or removed. Addition of shims will increase the pressure and removal of shims will cause a decrease in pressure. If the indication was not correct during a left turn (head end circuit), change the amount of shims under plug (5). If the indication was not correct to the right (rod end circuit), change the shims under plug (6).
FOLLOW-UP CYLINDER (SENDER)
2. Bleed valve (head end circuit). 4. Shims. 5. Plug (head end circuit). 6. Plug (rod end circuit). The torque for plugs (5) and (6) is 42 3 lb. ft. (58 4 N m). The torque for valves (2) and (3) is 24 2 lb. ft. (30 3 N m). Braking Action in Receiver Cylinder
5P3100 or 9S5800 Pump Group520572 Swivel Tee5P4775 Hose Assembly (two if desired)5P4815 Pressure Gauge4M5317 BushingThe friction between the housing of the receiver cylinder and the piston ring and seals causes a resistance to movement (braking action) of the cylinder rod. This resistance to movement (braking action) permits the complete loss of steering if there is a failure in the follow-up circuit. To use the 5P3100 or 9S5800 Pump Group, one of the hoses must be removed from the pump.
FOLLOW-UP CYLINDER (RECEIVER)
1. Receiver cylinder. 2. Lever.1. Disconnect the hoses from receiver cylinder (1) that go to the head end and rod end of the sender cylinder. Do not disconnect the hoses that go to the pressure reducing valve.2. Use a tee to install gauge (3) in the line between pump (4) and the cylinder. Connect the hose and gauge to the rod end of the cylinder as shown. Another hose can be installed in the head end of the cylinder as a drain if desired.3. Disconnect the cylinder rod from lever (2) on the steering gear. Be sure the lever does not interfere with the movement of the cylinder rod.4. Look at the cylinder rod and gauge and move the pump handle.
SCHEMATIC FOR BRAKING ACTION CHECK
1. Receiver cylinder. 3. 5P4815 Pressure gauge. 4. 9S5800 or 5P3100 Pump Group.5. When the cylinder rod moves, note the indication on the gauge. The pressure must be 125 50 psi (860 340 kPa).6. If the pressure indication is low, there is not enough braking action. Remove the cylinder and repair it, or install a new one.Check of Ball Seating Surface for Oil Leakage in Receiver Cylinder
9S5518 Plugs (two).9L8493 Caps (two).Oil leaking past seats (7) can cause the machine to continue turning after the operator has stopped moving the steering wheel. Turning the steering wheel in the opposite direction will stop the turn. Leakage occurs because of a loose ball seat and/or an out-of-round (not round) bore for the seat in the cylinder.Use the procedure that follows as a quick check of ball seating surface