Hitachi NV 65HMC, Руководство по обслуживанию и технические данные

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Body Ass’y [39]
Piston Bumper [41]
Feed Piston O-Ring (I.D. 14) [104]
Feed Piston Cover [109]
Retaining Ring
For D24 Hole
[110]
Roll Pin D4 x 18 [48]
Split side
Groove Stepped
Groove
Feed piston chamber
Surface A
Nose [43]
Air passage
Magazine side
O-Ring (P-9) [103]
Feeder Arm (B) [49]
3. Disassembly and reassembly of the Piston Bumper, Feeder (A), Feed Piston, etc
(1) Disassembly
• Remove the Nose [43] and push the lever components from the output section according to item 1 in
"Disassembly and Reassembly of the Nail Feeder Section". You can then remove the Piston Bumper [41] .
• Remove the Retaining Ring For D24 Hole [110] by using the C-shaped snap ring puller for the hole, while
pressing the Feed Piston Cover [109] with your finger so that it does not pop up. You can then remove the
Feed Piston Cover [109] , Bumper [108] , Feed Spring (A) [106] , and Feed Spring (B) [107] .
• Pull out the Roll Pin D4 x 18 [48] by using the roll pin puller (ø 4). You can then remove the Feed Piston
[105] and Feeder Arm (B) [49] .
• Push out the Needle Roller [47] by using the roll pin puller (ø 4). You can then remove Feeder (A) [51]
and the Feeder Spring [50] from Feeder Arm (B) [49] .
(2) Reassembly
Conduct reassembly by reversing the disassembly procedure, but note the following:
• If the air passages of the Body Ass'y [39] and Nose [43] and the feed piston chamber become clogged
with broken pieces of the Piston Bumper [41] or other objects, the Feed Piston [105] may not work
properly. So, when replacing the Piston Bumper [41] , clean these parts prior to reassembly.
• Apply grease to the O-Ring (P-9) [103] and Feed Piston O-Ring [104] prior to reassembly.
• Apply grease to the groove of the Feed Piston [105] .
• Assemble the Bumper [108] with its stepped part on the Feed Piston [105] side.
• Grease must be applied to the sliding parts of the Feed Piston [105] and Feed Piston O-Ring [104] of
the Nose [43] prior to reassembly. However, too much grease on Surface A will adversely affect Feed
Piston [105] movement (at low air pressure).
• Assemble the Roll Pin D4 x 18 [48] with its split side on the magazine side as shown above.
• Make sure the Retaining Ring For D24 Hole [110] is just in the groove of the Nose [43] .
• Disassembly and reassembly of Piston Bumper, Feeder (A), Feed Piston, etc