7-121
DISASSEMBLY
Procedures are based on the boom
cylinder.
Remove cylinder head and piston rod
Hold the clevis section of the tube in a
vise.
Use mouth pieces so as not to damage
the machined surface of the cylinder
tube. Do not make use of the outside
piping as a locking means.
2
200mm
Cover here
with rag
Turn counter
clockwise
3
Hook spanner
Full straight
sideways
Lift
Oil pan
1
2
(1)
3)
ö
Η
ö
Draw out cylinder head and rod assembly
together from tube assembly(1).
Since the rod assembly is heavy in this
case, lift the tip of the rod assembly(2)
with a crane or some means and draw it
out. However, when rod assembly(2)
has been drawn out to approximately
two thirds of its length, lift it in its center to
draw it completely.
Κ
ö
Loosen and remove the gland(3) by hook
spanner.
Cover the extracted rod assembly(2) with
rag to prevent it from being accidentally
damaged during operation.
Ι
ö
Pull out rod assembly(2) about 200mm
(7.1in). Because the rod assembly is
rather heavy, finish extending it with air
pressure after the oil draining operation.
Θ
R35Z77CY20
R35Z77CY21
R35Z77CY22