BYD EPS14, Service Manual, Page: 34 / 60

MAST MAINTENANCE
SERVICE MANUAL 30
(3) Inspect the cylinder tube and bore for cracks, pining, scoring, or other irregularities that may require replacement of the
cylinder.
(4) Inspect the valve in the piston.
4. Cylinder Reassembly
(1) Coat all o-rings, seals, bushings, back-up rings, the rod and piston, valves, and the inner wall of the gland and the cylinder
tube in clean hydraulic oil before reassembly.
(2) Replace the dust wipers, o-rings, seals, of the gland and piston as a set.
(3) Carefully insert the rod and piston into the cylinder without damaging cylinder tube threads and inner wall.
(4) Lubricate cylinder threads and carefully screw gland onto the cylinder fully without damaging o-rings and seals.
(5) Check and ensure the piston slides freely, and then tighten the gland.
(6) Install the valve on the cylinder bottom side.