Komatsu Galeo PC850-8 User Manual

SEN01057-01 50 Disassembly and assembly
38 PC800, 850-8
Disassembly and assembly of
hydraulic cylinder assembly 1
Special tools
Disassembly
1. Piston rod assembly
1) Remove piping from cylinder assembly.
2) Remove mounting bolts, and disconnect
head assembly (1).
3) Pull out piston rod assembly (2).
a Place a container under the cylinder
to catch the oil.
4) Disassemble piston rod assembly as fol-
lows.
i) Set piston rod assembly (2) to tool U1.
ii) Remove piston assembly stopper
screw (3).
q Applicable to:
Boom and arm cylinder for stan-
dard and SE specifications.
Bucket cylinder for standard
specification.
Screw size: M12 × pitch 1.75
a If screw (3) has been caulked
strongly and cannot be removed,
screw it in fully, then fit a tap to
the thread and pull it out.
Symbol
Part number Part name
Necessity
Q’ty
N/R
Sketch
U
1 790-502-1003
Cylinder repair
stand
t 1
2 790-720-1000 Expander t 1
3
796-720-1670 Ring t 1
07281-01279 Clamp t 1
4
790-201-1702 Push tool kit t 1
790-201-1881 • Push tool t 1
790-201-1871 • Push tool t 1
790-445-4210 Push tool t 1
790-101-5021 • Grip t 1
01010-50816 • Bolt t 1
5
790-201-1500 Push tool kit t 1
790-201-1690 • Plate t 1
790-201-1680 • Plate t 1
790-201-1970 Push tool t 1
792-715-1400 Plate t 1
790-101-5021 • Grip t 1
01010-50816 • Bolt t 1
6
790-102-4300 Wrench t 1
790-102-4310 Pin t 2

Komatsu Galeo PC850-8 Specifications

General

Brand	Komatsu
Model	Galeo PC850-8
Category	Excavators
Language	English