ELBOW A. 8M9204 - Caterpillar

Check Procedure
Table 3
Destroke Points (Transmission Output Speed)
Destroke Pressure Travel Motor Swashplate Angle Limit Solenoid Current ( 0.04 amp) Transmission Output Speed ( 50 rpm)
400 kPa (58 psi) 0.230 212
550 kPa (80 psi) 0.267 212
700 kPa (102 psi) 0.304 225
900 kPa (131 psi) 0.354 246
1,100 kPa (160 psi) 0.404 271
1,300 kPa (189 psi) 0.453 302
1,500 kPa (218 psi) 0.503 341
1,700 kPa (247 psi) 0.553 392
1,900 kPa (276 psi) 0.602 460
2,100 kPa (305 psi) 0.652 557
2,200 kPa (319 psi) 0.677 622
2,300 kPa (334 psi) 0.701 705
2,500 kPa (363 psi) 0.751 800
2,700 kPa (392 psi) 0.801 800
2,900 kPa (421 psi) 1.000 800 Note: The travel motor and transmission can be damaged if the speed of the transmission exceeds 1000 rpm while in first gear.
To prevent injury or death, never work under a machine while a test is being performed.
Release the service brake pedal.
Depress the travel speed pedal fully in the FORWARD position.
Monitor the "Transmission Output Speed", and slowly increase the current value to the "Travel Motor Swash Plate Angle Limit Solenoid Current Override" by increments of 0.02 amp until the pressure at port "M8" (1) has reached the desired destroke pressure in Table 3.
Compare the transmission output speed and travel motor swashplate angle limit solenoid current with the pressure at port "M8" (1).
Repeat the"Check Procedure" for more destroke points that are listed in Table 3.
Release the travel pedal.
Fully depress the service brake pedal until the service brake pedal locks mechanically.
Stop the engine.
Release the pressure in the hydraulic system.Note: Refer to Testing and Adjusting, "System Pressure - Release".
Raise the left console.Test Procedure
To prevent injury or death, never work under a machine while a test is being performed.
Release the service brake pedal.
Depress the travel speed pedal fully in the FORWARD position.
Monitor the "Transmission Output Speed", and slowly increase the current value to the "Travel Motor Swash Plate Angle Limit Solenoid Current Override" by increments of 0.02 amp until the transmission output speed increases.
Check the pressure gauge at port "M8" (1) to verify that the pressure has increased to the proper specification when the transmission speed increases. Refer to Table 1 for the correct pressure.
Release the travel pedal.
Fully depress the service brake pedal until the service brake pedal locks mechanically.
If the destroke pressure is not set to the proper specification, proceed to the "Adjustment Procedure" to adjust the destroke pressure.Adjustment Procedure
Note: If the original cap is on the destroke pressure adjustment screw, do not make adjustments until the root cause of failure has been verified.
Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.
Illustration 12 g03736531
Travel motor
(2) Destroke adjustment screw
Stop the engine.
Raise the left console.
Loosen the locknut on destroke adjustment screw (2).
Turn destroke adjustment screw (2) clockwise to decrease pressure. Turn destroke adjustment screw (2) counterclockwise to increase the pressure.Note: A quarter turn of destroke adjustment screw (2) will