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4. Oil replacement
If the stroke gets too short due to a lack of hydraulic oil (if a proper caulk
stroke is impossible, even after stroke adjustment), follow the procedure
below to replace the hydraulic oil.
If the stroke again becomes inadequate immediately after replacement of
oil, the oil seal must be replaced. Send the tool for repair.
《Procedure》
(1) Detach the coupler to stop the supply of compressed air.
(2) Set the position of the control nut to approximately 10mm.
(Refer to "(2) Adjustment of stroke" on p.8.)
*The maximum stroke of the tool is 6.5mm.
*If control nut is not set to around 10mm, the valve and control nut could
break.
Note: Don't loosen the lock screw of the control knob as this would disturb
the stroke (Figure 7-14).
Graduation
Control nut
(Set the position to 10mm)
(3) Use a cross-head screwdriver to remove the truss machine screws
(Figure 7-15).
(4) Stand the tool with the chamber uppermost and lift the chamber off. Pull
the air piston assembly and the tube out (Figure 7-16).
End of the control nut
Lock screw (1.5mm hexa. wrench)
Figure 7-14
18
Lock screw (Never loosen)
Control knob
PNT800
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