Disassembly And Reassembly Of The Cap And The Magazine Section - Hitachi NR 90AE Technical Data And Service Manual

10-5. Disassembly and Reassembly of the Cap and the Magazine Section

(1) Magazine [76], Nail Feeder Ass'y [87] and the related parts (See Fig. 23.)
[Tools required]
Hex. bar wrench (5 mm)
Wrench M6
Roll pin puller (3 mm (0.118") dia.)
Wooden hammer
A cross-head screwdriver
(a) Disassembly
Holding the Nylon Nut M4 [88] with a wrench M6, remove the Hex. Socket Hd. Bolt M6 x 22 [35] and pull out
the entire magazine section backward.
Pull out the Roll Pin D3 x 8 [84] with a roll pin puller (3 mm dia.) and remove the Nail Feeder Ass'y [87],
Ribbon Spring [82] and Needle Roller D4 x 20 [81] from the front of the Magazine [76].
Remove the three Hex. Socket Hd. Bolts (W/Flange) M6 x 12 [77]. Then the Handle Arm [71] and the
Magazine Cover [74] can be removed together with the other parts.
The Nail Rail [75] that is press-fitted into the Magazine [76] has a protrusion at the rear end to prevent coming
off. Tap at the front of the Magazine [76] using a hammer and a bar being careful not to scratch the parts.
The screw is opened by the cross-head screwdriver and the Magazine Plate [89] is taken.
(b) Reassembly
Disassembly procedures should be followed in the reverse order. Note the following points.
Insert the Nail Rail [75] from the rear of the Magazine [76] and press-fit the Nail Rail [75] into the Magazine
[76] by tapping with a wooden hammer so that the rear end of the Nail Rail [75] becomes flush with the
Magazine [76].
Hook the hook of the Ribbon Spring [82] on the Magazine [76] then mount the Nail Feeder Ass'y [87] to the
Magazine [76]. Then insert the Roll Pin D3 x 8 [84].
Holding the Nylon Nut M6 [72] with a wrench M6, mount the magazine section to the Body Ass'y [24] with the
Hex. Socket Hd. Bolt M6 x 22 [35].
The Magazine Plate [89] is installed in the Magazine [76] and the screw is tightened by the cross-head
screwdriver.
Contour mismatch/clearance between the Nose [28] and the magazine section shall be 0.05" (1.3 mm) max.
(See Fig. 23.)
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