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11. INSPECTION AND CONFIRMATION AFTER REASSEMBLY
Be sure to check the following items after reassembly. Pay special attention to the items (2) and (4) about the
single actuation (single sequential actuation) mechanism that is not provided to the Model NR 83AA2 but the
Model NR 83AA3. Before checking the following items except (5), check that no nail is loaded in the
Magazine [78] and the Nose [32].
(1) Check that the Pushing Lever [45], Trigger [51], Trigger Plunger [65], Plunger (A) [48], Plunger (B) [59] and
Valve Sleeve (A) [54] operate smoothly without connecting to an air compressor. Then check that the Nail
Feeder Ass'y [75] moves smoothly in the Magazine [78].
(2) Connect the Model NR 83AA3 to an air compressor and set Valve Sleeve (A) [54] to "single actuation (single
sequential actuation)" (see 5-2). Check the following when the pressure is 4.5 kgf/cm (63 psi) and 8.5 kgf/cm
(120 psi).
Check that there is no air leakage and the Model NR 83AA3 does not operate (i.e., check that the Piston
[12] does not come out of the Nose [32] tip (outlet of nails) when it is left for five seconds or more).
(3) Set Valve Sleeve (A) [54] to "contact actuation" (see 5-2). Check the following when the pressure is
8.5 kgf/cm (120 psi).
Check that the Model NR 83AA3 does not operate just by pulling the Trigger [51].
1
Check that the Model NR 83AA3 does not operate just by pressing the Pushing Lever [45] against a test
2
piece (wood etc.).
Check that the Model NR 83AA3 operates by pulling the Trigger [51] first then pressing the Pushing Lever
3
[45] against a test piece (at this time, pull the Nail Feeder Ass'y [75] backward (see Fig. 15)).
(4) Set Valve Sleeve (A) [54] to "single actuation (single sequential actuation)". Check the following when the
pressure is 8.5 kgf/cm (120 psi).
Check that the Model NR 83AA3 does not operate just by pulling the Trigger [51] (i.e., check that the
1
Piston [12] does not come out of the Nose [32] tip (outlet of nails) when keeping the Trigger [51] pulled for
five seconds or more).
Check that the Model NR 83AA3 does not operate just by pressing the Pushing Lever [45] against a test
2
piece.
Check that the Model NR 83AA3 operates by pressing the Pushing Lever [45] against a test piece first
3
then pulling the Trigger [51]. Check that the Piston [12] is still showing from the Nose [32] tip (outlet of
nails) after the Pushing Lever [45] is released from the test piece with the Trigger [51] pulled.
(5) Set Valve Sleeve (A) [54] to "contact actuation". Set the pressure to 4.5 kgf/cm (63 psi) and load nails in the
Magazine [78]. Perform nailing operation and check that nails are properly driven (no idling and bent nails).
(6) Recheck the tightening torque of each screw without connecting to an air compressor.
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