-15
Standard
dimension
Service
Iimit
A
3.2
3.4
a
3.0
2.7
b
30.0
29.7
c
18.5
17.5
(5) lnspection of Casing
• Are there any flaws, cracks, or deformation
?
Carefully check the part where the top hook is attached.
• Are the bolts loose
?
(6) lnspection of Switch and Valve
• Are there any flaws, deformation or wear on the 0-rings
?
• Are the springs decayed, cracked or flawed
?
• ls the hose damaged, or is the connection part loose
?
• Do the push buttans correctly return to the neutral position after being pushed
?
• Are the bolts loose
?
• ls the silencer in the handle clogged
?
• Check the pilot valve for the preventive device against reverse winding.
See Valve body(14) in the disassembly drawing (on Page
28
or
30).
Does the pilot valve return quickly when released after pressing the tip of the valve
?
(7) lnspection of Air Motor
- Replace parts which show the following conditions :
• The vanes are warped (curved), seized or cracked.
Wear on the vanes reaches the service Iimit.
• The side face of the rotor is gouged or seized.
• The vane slot of the rotor is worn beyond the service Iimit or is narrower than the standard
dimension.
• The rotor is cracked, or the keyway is deformed.
• There is a visible indent or deformation on the key.
• The end plate is gouged or seized, or the surface is rough due to wear.
• Abnormal wear, flaw or corrosion is found on
I
in the cylinder.
• The bearings are damaged, worn, or do not rotate smoothly (feels rugged when manually
rotated).
11111 Wear Limit of Vane and Rotor
(mm)
Содержание EHW-120
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