Komatsu Galeo PC800-8 Shop Manual page 1072

SEN01058-00
Removal and installation of boom
assembly
Loading shovel
Removal
1. Remove arm assembly.
For details, see "Removal and installation of
arm assembly".
2. Sling bucket cylinder assembly (1), remove
plate, then pull out pin (2), and remove bucket
cylinder assembly.
4
Pin: 35 kg
4
Bucket cylinder assembly: 730 kg
a Remove the bucket cylinder on the other
side in the same way.
3. Sling boom, set stand [1] at tip of boom to sup-
port boom.
4. Remove boom cylinder from boom.
For details, see "Removal and installation of
boom cylinder assembly".
a Remove the boom cylinder on the other
side from the boom in the same way.
22
5. Disconnect bottom dump cylinder hoses (3),
bucket cylinder hoses (4), and arm cylinder
1
hoses (5).
a When the hoses are disconnected, oil may
spurt out, so loosen the hose flanges
slowly before disconnecting.
[*1]
6. Disconnect head lamp wiring.
7. Using forcing screws (Thread dia. = 16 mm,
Pitch = 2.0 mm), pull out left and right boom foot
pins (6), then lift off boom assembly (7).
a Check the number and thickness of the
shims, and keep in a safe place.
4
Boom assembly: 4,550 kg
50 Disassembly and assembly
PC800, 850-8
[*2]