
•
Cylinder Body and Control Valve
The Cylinder Body, Control Valve and
upper seals fit inside the Cylinder
Housing. The lower seals are contained
in the bottom of the cylinder body.
•
Cylinder Housing
The hydraulic pressure connection is lo-
cated on the front of the Cylinder
Housing. Connection
P
.
The hydraulic return connection is lo-
cated on the front of the Cylinder
Housing. Connection
T
The demolition tool and tool bushing are
installed in the bottom of the Cylinder
Housing with a retainer pin and roll pin.
The lubrication fitting is located on the
Cylinder Housing. Refer to Section 8.5
for lubrication instructions.
•
Piston
The piston reciprocates in the cylinder
body transferring its energy to the de-
molition tool upon impact. The upper
end of the piston has an identification
number which is explained in Figure 2-6.
6-1-03
2-3
A
LLIED
Street Hammer
AS Series
Figure 2-4. Typical Cylinder Body and Control
Valve
Cyl#
HM#
S/N
0000-0
AT 0000*
0000
Cyl#
Model
S/N
Designation
*AT 20 = AS 342
AT 70 = AS 352
AT 120 = AS 362
AT 170 = AS 370
AT 220 = AS 380
P
T
Figure 2-5. Typical Cylinder Housing
Design
Type
Serial No.
Upper Seal
Surface
Working
Surface (oil)
Working
Surface (oil)
Lower Seal
Surface
Impact
Surface
O - A
2000
0000
Figure 2-6. Typical Piston
Summary of Contents for AS 342
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