3769017 Hydraulic Cylinder Seal Kits 7X2825 8T6892 8T6390 3769017 2275350

3769017 KIT SEAL 7X2825 8T6892 8T6390 3769017 2275350

1 Kit Replacement Hydraulic Seal 7X2825 Compatible with 8T6892, 8T6390, 3769017, 2275350 | #AA84DL
GVII You Purchasing 1 Kit Replacement Hydraulic Seal 7X2825 Compatible With 8T6892, 8T6390, 3769017, 2275350 || 100% brand new and high quality || One New Replacement Fits Integrated Toolcarrier Steering Cylinder Seal Kit that fits the following model: IT38F, Cylinder: 1050094 || Please Note: Your Seal Kit will look different Replaces | Part Number: 1857025, 3769017, 2275350 || Rod: 1 3/4" | Bore: 3"

BACKHOE LOADER 446B
INDUSTRIAL TRACTOR HA771 HA871 TK371 TK381
INTEGRATED TOOLCARRIER IT38F IT38G IT38G II IT38H
MOTOR GRADER 120G 120H 120H ES 120H NA 120K 120K 2 120M 120M 2 12G 12H 12H ES 12H NA 12K 12M 12M 2 12M 3 12M 3 AWD 130G 135H 135H NA 140G 140H 140H ES 140H NA 140K 140K 2 140M 140M 2 140M 3 140M 3 AWD 143H 160G 160H 160H ES 160H NA 160K 160M 160M 2 160M 3 160M 3 AWD 163H 163H NA
WHEEL FELLER BUNCHER 533 543 HA770 HA870 TK370 TK380
WHEEL LOADER 938F 938G 938G II 938H
WHEEL SKIDDER 515 518C 525 525B 535B
WHEEL TRACTOR 627G 637G 657G

 

Illustration 1 g01065649
Loion of the Parking Brake Control Valve
Illustration 2 g00103057
Parking Brake Control ValveThe parking brake control valve is loed under the cab on the left side of the frame. The parking brake control valve controls the flow of pressure oil to the parking brake and from the parking brake.
Illustration 3 g00103058
(1) Parking brake control knob.
Illustration 4 g00103059
Parking Brake Control ValveEngaged Position (2) Pressure port from the brake accumulators. (3) Stem for the parking brake control valve. (4) Spring. (5) Spool. (6) Tank port. (7) Spool. (8) Parking brake port. (9) Retainer. (10) Spring.When parking brake control knob (1) is pushed in, the parking brake is in the disengaged position. Spool (7) and retainer (9) move to the right. This movement compresses spring (10) and pressure oil is allowed to flow into the pressure port from accumulators (2). The pressure oil also flows into a cavity in the parking brake.When the pressure of the oil in the cavity is high enough to compress the springs in the parking brake, the brake disengages. This oil pressure keeps the parking brake disengaged.To engage the parking brake, pull out on parking brake control knob (1). When stem (3) is pulled out, the flow of oil from the accumulators to the parking brake stops. Moving stem (3) causes spool (7) to move to the left. This stops the supply of oil from the accumulators. The oil is then allowed to drain back to the hydraulic oil tank.This causes a decrease in the oil pressure for the brake system. When the oil pressure is decreased, the force of the springs in the parking brake is greater than the pressure of the oil in the cavity of the parking brake. This allows the springs in the parking brake to engage the parking brake.If there is an oil pressure drop in the braking system during machine operation, the parking brake control valve automatically engages the parking brake.With a loss of oil pressure, the force of the springs in the parking brake moves spool (5) to the right. This blocks any flow of oil that would normally help to keep spring (10) compressed. This causes spring retainer (9), spool (7), and stem (3) to move out.
Illustration 5 g00103065
(11) Alert indior. (12) Action lamp. (13) Message area.When the oil pressure for the parking brake drops below 6035 515 kPa (875 75 psi), the monitoring system alerts the operator. Alert indior (11) and action lamp (12) will flash. Also, the action alarm will sound. Additionally, message area (13) shows "P BRK ACUM PRESS LO" and "PARKBK ON".The transmission returns to neutral if the transmission is in first speed forward or in first speed reverse.