Disassembly And Assembly Of Hydraulic Cylinder Assembly - Komatsu WA250-6 Shop Manual

500 Hydraulic system

Disassembly and assembly of hydraulic cylinder assembly

Disassembly and assembly of
hydraulic cylinder assembly
Special tools
Symbol Part No.
790-502-1003 Repair stand
1
790-101-1102 Hydraulic pump
790-102-2303
Wrench assembly
2 or (for lift and bucket) t 1
790-102-3802
3 790-302-1340 Socket (for lift)
790-201-1702 Push tool kit
790-101-5021
01010-50816
790-201-1811
4
790-201-1821
790-201-1741
U
790-201-1500 Push tool kit
790-101-5021
01010-50816
5
790-201-1620
790-201-1630
790-201-1550
6 790-720-1000 Expander
796-720-1670 Ring (Lift)
07281-01279 Clamp (Lift)
796-720-1680 Ring (Bucket)
7
07281-01589 Clamp (Bucket)
796-720-1740 Ring (Steering)
07281-00809 Clamp (Steering)
WA250, 250PZ-6
Part Name
t 1
t 1
t 1
t 1
1
• Grip
1
• Bolt
1
• Push tool (Lift)
• Push tool
1
(Bucket)
• Push tool
1
(Steering)
t 1
1
• Grip
1
• Bolt
1
• Plate (Lift)
1
• Plate (Bucket)
1
• Plate (Steering)
Q 1
Q 1
Q 1
Q 1
Q 1
Q 1
Q 1
Disassembly
1
1. Cylinder assembly
Set cylinder assembly (1) to tool U1.
2. Cylinder head and piston rod assembly
(Steering cylinder and lift cylinder)
1) Using tool U2, remove cylinder head (2)
from the cylinder.
CED00174
2) Pull cylinder head and piston rod assem-
bly (3) out of cylinder (4).
a Since oil will flow out when the piston
rod assembly is pulled out of the cyl-
inder, prepare an oil receiver.
9JF01062
SEN03856-00
57
50-500