Piston And Gland Service Diagram - Koyker 80 Owner's Manual

CYLINDER GLAND SERVICE DIAGRAM
All gland seals shown with a section
removed to facilitate correct installation.
ROD WIPER
U-CUP SEAL
GLAND
BACK UP
O-RING SECTION VIEW
ASSEMBLED GLAND
CYLINDER PISTON SERVICE DIAGRAM
To Remove Seals:
Carefully cut across each seal with a sharp knife. Be sure
not to scratch sealing surfaces of aluminum piston. If a
sharp knife is not available. An electric soldering gun or
hot iron may be used to melt throughout seals.
O-RING
INNER PISTON
U-CUP SEAL
PISTON
U-CUP SEAL
OUTER PISTON
GLAND
ROD WIPER
U-CUP SEAL
BACK UP
O-RING
Important! Be sure all gland and piston seals have been installed
correctly before cylinder is assembled!
To Install Seals:
1. Thoroughly clean piston sealing surface of all foreign
2. Heat new seals in hydraulic oil to 160° F.
3. Remove seals from oil, wipe dry and install in piston
4. Replace piston on cylinder shaft and assemble cylinder
SECTION VIEW
ASSEMBLED PISTON
Page 22
Note: To install rod wiper and U-cup seal,
fold similar to shape shown below, slip into
gland bore and locate each in its respective
groove. Tools are used to fold seals, take
care not to damage sealing surfaces.
matter.
Never use a direct flame or heated water on hydraulic
seals.
grooves as shown in illustration at left. Be sure
seals have completely seated in piston grooves
before allowed to cool.
when seals have cooled to room temperature.
O-RING
U-CUP SEAL
PISTON
U-CUP SEAL