TL470X Telescopic Handler
When the pressure of the compressed air that has flowed from the inlet valve into the brake chamber pushes the bottom side of the piston up and becomes equal in force to the pedal pressing force
Hydraulic Control Valve/Lift Circuit
So If there isnt enough oil
Hyster H9XM-EC8 H9XM-ECD8
Tigercat 620E, 625E, 630E, 635E Skidder Repair Service Manual TL470X Telescopic HandlerFormat : PDF SUPPLIED AS DOWNLOADABLE LINK Machine Type: Tigercat Skidder Language: English Format: PDF 1. Publication: Issue 1. 1, July 2017 Serial Number: 620E From 6206201 to 6206400 630E From 6304001 to 6304200 635E From 6301501 to 6352000 Tigercat 620E, 630E, 635E Skidder Repair Service Manual 598 Pages Tigercat 620E, 630E, 635E Skidder Operators Manual 248 Pages Tigercat N45, N67 Tier 4i Engine Manual 52 Pages 2. Publication: Issue 2. 3, March