There could also be a cylinder packing failure - this can be remedied by installing a new seal kit. If the jack won’t extend when the foot pedal is pumped or it retracts on its own, the fluid is clean and adequate, flush the release valve by pumping the foot pedal with the valve open. If this occurs, disassemble the jack and clean it. Then let go of the release pedal.Ĭontamination of the hydraulic system can cause the cylinder to fail to extend or to retract when the foot pedal is released. Get someone else to help you keep the release pedal pressed while you activate the foot pedal about 20 times. For Ranger products, pump the jack to the highest point where the first and second piston rams are both at maximum height. JEGS 79021 JEGS Adjustable Hydraulic Transmission Jack High-Lift Foot Pedal Operated, 1100 lb. Check your owner’s manual for the steps to follow. JEGS Adjustable Hydraulic Transmission Jack High-Lift Foot Pedal Operated, 1100 lb. If the fluid level is correct, you may need to bleed the hydraulic system. Ranger RTJ-1100 1/2 Ton Light-Duty Transmission Jack - 5150442. Ranger RTJ-1100 1/2 Ton Light-Duty Transmission Jack. K Tool International XD63515 1,200 lb Low Profile Transmission Jack - KTIXD63515. Air can accumulate within the hydraulic system during shipment or after prolonged use. K Tool 1,200 lb Transmission Jack Low Profile. Note that air in the system can also cause a spongy cylinder response.
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