Inspection And Confirmation After Reassembly - Hitachi NR90GC - 3-1/2" Gas Powered Clipped Head Framing Nailer Technical Data And Service Manual

11. INSPECTION AND CONFIRMATION AFTER REASSEMBLY

(1) Check only the main body for the following.
Check that the Pushing Lever [64] does not operate when the Feeder Knob [125] is at the forward end.
Check that the Pushing Lever [64] operates smoothly when the Feeder Knob [125] is pulled backward.
Check that the Trigger [98] operates smoothly.
Check that the Cell Lever [105] operates smoothly when pressing the Pushing Lever [64] against a workpiece.
Press the Pushing Lever [64] against a workpiece and depress the Trigger [98]. Check that the chamber
ass'y is held at the top dead center and it does not return to the bottom dead center even if the Pushing Lever
[64] is released. Release the Trigger [98] and check that the chamber ass'y returns to the bottom dead
center.
(2) Check the main body with the battery loaded for the following.
Check that the Prism [96] lights.
Check that the Fan [20] rotates when pressing the Pushing Lever [64] against a workpiece.
Check that the Fan [20] stops about 6 to 7 seconds after the Pushing Lever [64] is released.
(3) Check the main body with the battery, fuel cell and nails loaded for the following.
Check that no nail is driven just by depressing the Trigger [98]. Check that no nail is driven just by pressing
the Pushing Lever [64] against a workpiece (check that the Fan [20] is rotating).
Check that the Pushing Lever [64] operates smoothly.
Check that the piston returns to the top dead center by driving a nail actually (do not drive nails continuously to
prevent idle driving).
Press the Pushing Lever [64] against a workpiece and depress the Trigger [98] partway to hold the Chamber
[24] at the top dead center. Then release the Pushing Lever [64] and depress the Trigger [98] fully to check
that no nail is driven.
Check that no nail is driven when pressing the Pushing Lever [64] against a workpiece with the Trigger [98]
depressed.
(4) Perform the following after the above checking.
Check that the main body is not loaded with the battery, fuel cell and nails.
Recheck the tightening torque of each screw.
Set the Pushing Lever [64] to the uppermost position (nails are driven to the deepest position).
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