Kubota LA344, Workshop Manual

Page: 67 / 74

2. Remove the nut (4), and remove the piston (3) and
cylinder head (2) from the piston rod (1).
(1) Piston rod
(2) Cylinder head
(3) Piston
(4) Nut (5) Wiper seal
(6) Oil seal
(7) O-ring
(When reassembling)
• Visually inspect all parts for signs of scoring or
damage.
• Put the piston rod to the cylinder head. Be careful
not to cause damage to the wiper seal (5) and oil
seal (6).
Tightening tor-
que
Boom cylinder pis-
ton mounting nut
150 to 180 N
⋅
m
15.3 to 18.3 kgf
⋅
m
111 to 132 lbf ⋅ ft
Bucket cylinder
piston mounting
nut 350 to 400 N ⋅ m
35.7 to 40.7 kgf
⋅
m
259 to 295 lbf
⋅
ft
4.2.7 Removing piston seal and O-ring
1. Remove the piston seal (2) and O-ring (3) from the
piston (1).
(1) Piston
(2) Piston seal (3) O-ring
IMPORTANT
• To install the O-ring (3) and piston seal (2) to the
piston (1), use the slide jig and correcting jig as
shown in special tools of GENERAL section.
RELATED PAGE
1.1 Sliding jig and correcting jig on page 2-15
4.2.8 Installing O-ring and piston seal
1. Set the slide jig (2) on the piston (4).
2. Install the O-ring (3) to the piston using the slide jig.
3. Install the piston seal (1) over the O-ring using the
slide jig.
NOTE
• Do not turn (roll) the piston seal as you
install it.
(1) Piston seal
(2) Slide jig
(3) O-ring (4) Piston
3. FRONT LOADER
SERVICING
4.Disassembling and assembling
3-30
LA344, LA344S
KiSC issued 02, 2017 A