Shaver HD-12-H, Operator'S Manual

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9 . Use a sturdy seal pick to remove the seals
from the cylinder piston. Discard the seals.
Clean and inspect the piston and replace if
worn or damaged.
10 . Clean the inside of the tilt cylinder tube
and inspect for scratches with raised
(above the surface level) edges, wear,
rust, cracks, and pitting. Replace any
worn or damaged tube.
11 . Use a sturdy seal pick to remove the seals
from the cylinder cap. Discard the seals.
Clean and inspect the cap and replace if
worn or damaged.
Cylinder Assembly
1 . Make sure all tilt cylinder components are
clean and free of rust.
2 . Lubricate the new seals with clean
hydraulic fluid.
3 . Install new internal O-ring seal (F23) and lip
seal (F24) (raised lip up) inside the cylinder
cap. Install new O-ring seal (F22) in the
O.D. groove. Install a new snap ring (F14),
not shown, in the top “cut-a-way” groove.
(F22) External O-ring Seal. (F23) Internal O-ring Seal.
(F24) Internal Lip Seal.
4 . Install new scraper seal (F25) in the
cylinder piston groove, followed by O-ring
seal (F26), and second scraper seal (F25).
The rounded (concave) surface of each
scraper seal (F25) must face (contact)
larger O-ring seal (F26).
(F25) Scraper Seal. (F26) O-ring Seal.
5 . Install new O-ring seal (F18) on the
threaded end of cylinder rod (F16 or F17).
6 . Lubricate the ID of cylinder cap (F15) with
clean hydraulic oil and install the cap onto
cylinder rod (F16 or F17) with the snap ring
groove facing up (toward the cylinder rod
mounting eye).
7 . Lubricate the ID of cylinder piston (F19)
with clean hydraulic oil. Install the cylinder
piston on cylinder rod (F16 or F17) with the
O-ring relief (groove) (A) toward O-ring seal
(F18). Install new self locking nut (F20) and
tighten securely.
(F14) Snap Ring. (F15) Cylinder Cap.
(F16 or F17) Cylinder Rod. (F18) O-ring Seal.
(F19) Cylinder Piston (with seal). (F20) Self Locking Nut.
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