4-88. Hydraulic Cylinder and Piston.This task covers:a. Testb. ServiceINITIAL SETUPToolEquipment Condition:General Mechanic’s Automotive Tool KitBay unfolded (para. 2-14).(Item 1, Appendix B)Materials/PartsGrease, Automotive and Artillery (Item 2, Appendix E)a. Test.(figure 4-114)NOTEThe following procedures are the same for both hydraulic cylinders.(1) Open vent valve (1).(2) Set pump control lever (2) to PUMP position.(3) Pump handle (3) and ensure cylinder (4) extends freely.(4) Close vent valve (1), and set pump control lever (2) to TRAFFIC and ensure cylinder(4) retracts handle (3)is pumped.4-288TM 5-5420-209-12
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