JLG 340AJ Service Manual - Manual (Page 168)

SECTION 5 - HYDRAULICS
5-10 – JLG Lift – 3121259
c. Install du bushing assembly and dust wiper assem-
bly as shown below.
d. Assemble back up ring, o-ring (Check the sequence
of back up ring, o-ring.)
3. Piston Seal Assembly
a. Assembly the seal assembly.
b. Install the o-ring into the groove.
c. Using a proper tool, press the piston seal onto the
piston. When installing the piston seal, it is
stretched while passing over the head.
d. Install the wear ring assembly by spreading it apart.
4. Rod assembly
a. Secure the rod assembly.
b. Install the Head onto the rod assembly. Take care as
not to damage the lip of the dust wiper and rod seal.
c. Assemble Piston.
JIG FOR
PRESS
DUST WIPER
JIG
DU BUSHING
PISTON SEAL
TOOL
O-RING
TOOL
ROD GLAND PISTON PISTON NUT