Service Manual
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E025 Sept. 2005 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT MODEL NR 90GC Hitachi Power Tools GAS STRIP NAILER NR 90GC TECHNICAL DATA AND SERVICE MANUAL N LIST No.
E025 Sept. 2005 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT MODEL NR 90GC Hitachi Power Tools GAS STRIP NAILER NR 90GC TECHNICAL DATA AND SERVICE MANUAL N LIST No.
Service Manual
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...19 9-3. PRODUCT NAME ...1 2. APPLICATIONS ...1 4. Specifications ...2 5-2. Nail Driving Force ...4 6. COMPARISONS WITH SIMILAR PRODUCTS 5 7. Handling Instructions ...6 7-2. Related Laws and Regulations ...8 8. Principle of the Nailing Action ...2 5-3. TROUBLESHOOTING GUIDE ...16 9-1. Problems Caused by Improper Handling 16 9-2. Regrinding the Driver Blade ...27 10. DISASSEMBLY AND REASSEMBLY 28 10-1. Disconnection and Reconnection of Cylinder Head Section 34 10-4. Disassembly and Reassembly of Wiring between Cylinder Head Section and Handle Section ...31 10-3.
...19 9-3. PRODUCT NAME ...1 2. APPLICATIONS ...1 4. Specifications ...2 5-2. Nail Driving Force ...4 6. COMPARISONS WITH SIMILAR PRODUCTS 5 7. Handling Instructions ...6 7-2. Related Laws and Regulations ...8 8. Principle of the Nailing Action ...2 5-3. TROUBLESHOOTING GUIDE ...16 9-1. Problems Caused by Improper Handling 16 9-2. Regrinding the Driver Blade ...27 10. DISASSEMBLY AND REASSEMBLY 28 10-1. Disconnection and Reconnection of Cylinder Head Section 34 10-4. Disassembly and Reassembly of Wiring between Cylinder Head Section and Handle Section ...31 10-3.
Service Manual
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... has been monopolizing the gas nailer markets. APPLICATIONS Floor and framing Truss build-up, window build-up Subflooring and roof decking Wall sheathing Mobile home and modular housing construction 4. PRODUCT NAME Hitachi 90 mm (3-1/2") Gas Strip Nailer, Model NR 90GC 2. We will enter the largest-scale clipped head (D-head) nailer market with the new Model NR 90GC gas strip nailer to expand our market...
... has been monopolizing the gas nailer markets. APPLICATIONS Floor and framing Truss build-up, window build-up Subflooring and roof decking Wall sheathing Mobile home and modular housing construction 4. PRODUCT NAME Hitachi 90 mm (3-1/2") Gas Strip Nailer, Model NR 90GC 2. We will enter the largest-scale clipped head (D-head) nailer market with the new Model NR 90GC gas strip nailer to expand our market...
Service Manual
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... released and pressed again. --- 2 --- For North America Safety glasses (Code No. 875769) Battery (Code No. 324147) Charger UC 7SD Case (Code No. 885360) Allen wrench for M5 screw (Code No. 944458) Optional accessories - For Europe Lubricant oiler (A) (Code No. 885246) Fuel cell (Code No. 753600) Grease (Code No. 317918) 5-2. next, pull the trigger to drive the nail. Specifications (1) Gas nailer Model NR 90GC Driving system Reciprocating piston type Weight Dimensions (Length x Height x Width) Nail feed system Nail...
... released and pressed again. --- 2 --- For North America Safety glasses (Code No. 875769) Battery (Code No. 324147) Charger UC 7SD Case (Code No. 885360) Allen wrench for M5 screw (Code No. 944458) Optional accessories - For Europe Lubricant oiler (A) (Code No. 885246) Fuel cell (Code No. 753600) Grease (Code No. 317918) 5-2. next, pull the trigger to drive the nail. Specifications (1) Gas nailer Model NR 90GC Driving system Reciprocating piston type Weight Dimensions (Length x Height x Width) Nail feed system Nail...
Service Manual
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... nailer. CAUTION: Ensure that screw-type nails cannot be used with a weak paper tape. The Model NR 90GC utilizes D-head (clipped head) nails collated at a different angle of nails. Nail Selection The Model NR 90GC utilizes D-head (clipped head) nails collated with the Model NR 90GC because it may cause bending of 26 degrees. It is recommended to ensure satisfactory driving quality. Do not use genuine HITACHI nails to use P's 2" Roundrive nail (eccentric full round head nail...
... nailer. CAUTION: Ensure that screw-type nails cannot be used with a weak paper tape. The Model NR 90GC utilizes D-head (clipped head) nails collated at a different angle of nails. Nail Selection The Model NR 90GC utilizes D-head (clipped head) nails collated with the Model NR 90GC because it may cause bending of 26 degrees. It is recommended to ensure satisfactory driving quality. Do not use genuine HITACHI nails to use P's 2" Roundrive nail (eccentric full round head nail...
Service Manual
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... the gas nailer Model NR 90GC on its combustion. Choose suitable nails and workpieces according to a pneumatic nailer, the output energy of the nailer. Nail Driving Force In contrast to the output energy of a gas nailer cannot be adjusted optionally. 5-4. However, the output energy is changed because environmental conditions such as a result of conversion to the air pressure of the Model NR 90GC changes within the operating...
... the gas nailer Model NR 90GC on its combustion. Choose suitable nails and workpieces according to a pneumatic nailer, the output energy of the nailer. Nail Driving Force In contrast to the output energy of a gas nailer cannot be adjusted optionally. 5-4. However, the output energy is changed because environmental conditions such as a result of conversion to the air pressure of the Model NR 90GC changes within the operating...
Service Manual
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.... COMPARISONS WITH SIMILAR PRODUCTS Maker HITACHI Model NR 90GC Weight (tool, battery, fuel cell) 3.5 kg (7.7 lbs.) Dimensions (L x H x W) 347 mm x 353 mm x 108 mm (12-21/32" x 13-29/32" x 4-1/4") Nail capacity 37 nails (1 strip) Magazine type Rear loading Driving depth adjusting mechanism With wrench Handle grip Rubber Driving method Single action Hook Feeder Provided 2-actioned nail feeding Battery voltage Charge 7.2 V 1 h Applicable nails Dia. (Clip head) Length 3.0 mm --- 3.3 mm (0.120" --- 0.131...
.... COMPARISONS WITH SIMILAR PRODUCTS Maker HITACHI Model NR 90GC Weight (tool, battery, fuel cell) 3.5 kg (7.7 lbs.) Dimensions (L x H x W) 347 mm x 353 mm x 108 mm (12-21/32" x 13-29/32" x 4-1/4") Nail capacity 37 nails (1 strip) Magazine type Rear loading Driving depth adjusting mechanism With wrench Handle grip Rubber Driving method Single action Hook Feeder Provided 2-actioned nail feeding Battery voltage Charge 7.2 V 1 h Applicable nails Dia. (Clip head) Length 3.0 mm --- 3.3 mm (0.120" --- 0.131...
Service Manual
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... and face protection 1926.302 Power-operated hand tools Portable, Compressed-Air-Actuated, Fastener Driving Tools-Safety Requirements for applicable items. Some applicable items are related items in various general safety regulations with each unit. Carefully ensure that the customer is fully aware of the precautions listed in handling is an ever-present danger of hand-held battery-powered motor operated tools and battery packs < Certificate No. 7-3. FI 21611...
... and face protection 1926.302 Power-operated hand tools Portable, Compressed-Air-Actuated, Fastener Driving Tools-Safety Requirements for applicable items. Some applicable items are related items in various general safety regulations with each unit. Carefully ensure that the customer is fully aware of the precautions listed in handling is an ever-present danger of hand-held battery-powered motor operated tools and battery packs < Certificate No. 7-3. FI 21611...
Service Manual
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... manner as electric circuits, motor and electric switches. There is a driving unit. There is at the top of the combustion chamber in the head section rotates and the spark plug discharges. --- 10 --- The Model NR 90GC is similar to the driving unit, battery holder, handle unit, fuel cell holder and electrical wiring. The piston reciprocates to the electric components such as a pneumatic nailer. This spring absorbs shock...
... manner as electric circuits, motor and electric switches. There is a driving unit. There is at the top of the combustion chamber in the head section rotates and the spark plug discharges. --- 10 --- The Model NR 90GC is similar to the driving unit, battery holder, handle unit, fuel cell holder and electrical wiring. The piston reciprocates to the electric components such as a pneumatic nailer. This spring absorbs shock...
Service Manual
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... the O-ring [36] Chamber [24] from lowering while the Trigger [98] is depressed. Because the Lead Valve [45] is depressed, the Chamber O-ring [15] Lock Bar [100] at the bottom of Switch Lever (B) [114] and turns on. Nail Fig. 6 Switch Lever (B) [114] Switch Trigger [98] (3) During return When the Trigger [98] is a nonreturn valve, no air comes in the combustion chamber discharges (Fig. 6). Chamber...
... the O-ring [36] Chamber [24] from lowering while the Trigger [98] is depressed. Because the Lead Valve [45] is depressed, the Chamber O-ring [15] Lock Bar [100] at the bottom of Switch Lever (B) [114] and turns on. Nail Fig. 6 Switch Lever (B) [114] Switch Trigger [98] (3) During return When the Trigger [98] is a nonreturn valve, no air comes in the combustion chamber discharges (Fig. 6). Chamber...
Service Manual
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... Trigger [98]. Press the Pushing Lever [64] securely. Please instruct the customers to use the nailer properly according to the uppermost position with a flat-blade screwdriver. Keep depressing the Trigger [98] securely about 0.5 second after combustion. The switch of the nailer but improper handling. The Battery [111] is low. The nailer does not start. The number of revolutions of the fuel cell is used with an air gun...
... Trigger [98]. Press the Pushing Lever [64] securely. Please instruct the customers to use the nailer properly according to the uppermost position with a flat-blade screwdriver. Keep depressing the Trigger [98] securely about 0.5 second after combustion. The switch of the nailer but improper handling. The Battery [111] is low. The nailer does not start. The number of revolutions of the fuel cell is used with an air gun...
Service Manual
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... Internal Wire (A) [86]. specifications. The Motor [6] does not rotate. It automatically turns off if it again. The Battery [111] is set properly. Set the metering valve to the fuel cell. Perform charging. Charge the Battery [111]. Connect properly (Fig. 17). Replace the Switch Arm [82]. Troubleshooting and Correction (1) Troubleshooting and correction in the fuel cell. Check that of fuel in the case of gas nailers The...
... Internal Wire (A) [86]. specifications. The Motor [6] does not rotate. It automatically turns off if it again. The Battery [111] is set properly. Set the metering valve to the fuel cell. Perform charging. Charge the Battery [111]. Connect properly (Fig. 17). Replace the Switch Arm [82]. Troubleshooting and Correction (1) Troubleshooting and correction in the fuel cell. Check that of fuel in the case of gas nailers The...
Service Manual
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.... Replace Switch Lever (B) [114]. Clean the inside of the cylinder is not set properly and return completely. Outside air temperature range: 0ûC to "9-3. Faulty insulation of the Piston [39]. Connect properly (Fig. 17). Replace Internal Wire (A) [86]. Return the Piston [39] to the uppermost position with a flat-blade screwdriver. Discharging and cooling are out of the specifications. The battery indicator light lights red...
.... Replace Switch Lever (B) [114]. Clean the inside of the cylinder is not set properly and return completely. Outside air temperature range: 0ûC to "9-3. Faulty insulation of the Piston [39]. Connect properly (Fig. 17). Replace Internal Wire (A) [86]. Return the Piston [39] to the uppermost position with a flat-blade screwdriver. Discharging and cooling are out of the specifications. The battery indicator light lights red...
Service Manual
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... Spring [121] is abnormal (deformed or damaged). Repair or replace the defective part. Nail or collating band clogs. Adhesive fragments are fed smoothly into the nail injection port of Nail Feeder (A) [112]. Remove the abnormal nails and load the magazine with abnormal nails (bent nails, large or small round-head nails, abnormal collation, etc.). Check if the nail feeder operates smoothly in the nail inlet groove. Remove the...
... Spring [121] is abnormal (deformed or damaged). Repair or replace the defective part. Nail or collating band clogs. Adhesive fragments are fed smoothly into the nail injection port of Nail Feeder (A) [112]. Remove the abnormal nails and load the magazine with abnormal nails (bent nails, large or small round-head nails, abnormal collation, etc.). Check if the nail feeder operates smoothly in the nail inlet groove. Remove the...
Service Manual
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... wood workpiece and check if the nail is abnormal (worn or damaged). Driver blade is very hard. Turn the adjuster to the lower position to decrease the pressure. Workpiece is worn. Check Nail Feeder (A) [112] for abnormal condition. Replace the head valve spring. 2) Nails are used. Do not use unspecified workpieces. Pull the nail feeder backward and perform idle driving. Problem Possible cause Inspection method Remedy Piston...
... wood workpiece and check if the nail is abnormal (worn or damaged). Driver blade is very hard. Turn the adjuster to the lower position to decrease the pressure. Workpiece is worn. Check Nail Feeder (A) [112] for abnormal condition. Replace the head valve spring. 2) Nails are used. Do not use unspecified workpieces. Pull the nail feeder backward and perform idle driving. Problem Possible cause Inspection method Remedy Piston...
Service Manual
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...] is Replace the part. Check if they move smoothly after putting nails, and check if the nail feeder operates smoothly. Do not use unspecified workpieces. See in item 1). Problem Possible cause 3) Head of a nail driven into soft wood workpiece and check if the head protrudes from the wood surface. Inspection method Turn the adjuster to the proper position. Replace the driver blade. 4) Nails clog the Unspecified nails used...
...] is Replace the part. Check if they move smoothly after putting nails, and check if the nail feeder operates smoothly. Do not use unspecified workpieces. See in item 1). Problem Possible cause 3) Head of a nail driven into soft wood workpiece and check if the head protrudes from the wood surface. Inspection method Turn the adjuster to the proper position. Replace the driver blade. 4) Nails clog the Unspecified nails used...
Service Manual
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...].) 5. Bolt M5 x 20 [13] and remove the Cylinder Head [14] from the Housing [71]. (3) Put the Fan [20] on . Switch Lever (B) [114] is directly turned on the Cylinder Head [14] and check that the Fan [20] does not contact the surrounding components. (4) Push up the Pushing Lever [64] to "10. 9-3. Check whether the trigger switch wire in the uppermost position. (Check...
...].) 5. Bolt M5 x 20 [13] and remove the Cylinder Head [14] from the Housing [71]. (3) Put the Fan [20] on . Switch Lever (B) [114] is directly turned on the Cylinder Head [14] and check that the Fan [20] does not contact the surrounding components. (4) Push up the Pushing Lever [64] to "10. 9-3. Check whether the trigger switch wire in the uppermost position. (Check...
Service Manual
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... to remove all nails, fuel cell and battery. Be sure to 1.1) 6.4 0.5 (65 5, 4.7 0.4) 5.9 0.5 (60 5, 4.4 0.4) 6.4 0.5 (65 5, 4.7 0.4) 6.9 0.5 (70 5, 5.1 0.4) 8.3 0.5 (85 5, 6.1 0.4) 1.5 0.5 (15 5, 0.7 0.4) 3.0 0.5 (30 5, 2.2 0.4) 1.0 0.3 (10 3, 0.7 0.2) 1.8 0.4 (18 4, 1.3 0.3) 1.0 0.2 (10 2, 0.7 0.1) --- 28 --- When installing the O-rings, be sure to the item numbers in the descriptions below . Oil required: Hitachi Gas Nailer Lubricant 8 oz. (250 cc) oil feeder (Code No. 885-246) (Code No. 885-546) Use the cleaner (Code No. 885245) for each part Bolt...
... to remove all nails, fuel cell and battery. Be sure to 1.1) 6.4 0.5 (65 5, 4.7 0.4) 5.9 0.5 (60 5, 4.4 0.4) 6.4 0.5 (65 5, 4.7 0.4) 6.9 0.5 (70 5, 5.1 0.4) 8.3 0.5 (85 5, 6.1 0.4) 1.5 0.5 (15 5, 0.7 0.4) 3.0 0.5 (30 5, 2.2 0.4) 1.0 0.3 (10 3, 0.7 0.2) 1.8 0.4 (18 4, 1.3 0.3) 1.0 0.2 (10 2, 0.7 0.1) --- 28 --- When installing the O-rings, be sure to the item numbers in the descriptions below . Oil required: Hitachi Gas Nailer Lubricant 8 oz. (250 cc) oil feeder (Code No. 885-246) (Code No. 885-546) Use the cleaner (Code No. 885245) for each part Bolt...
Service Manual
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... tightening torque excessively. Remove the cylinder head section and the housing section to 10-5 (2), (3). Trigger Spring [97] Trigger [98] Switch Lever (B) [114] Lever Stopper [116] Spring [129] (b) Reassembly Reassemble handle (A) ass'y and handle (B) ass'y according to isolate the handle section. Overtightening the Hex. Place handle (B) ass'y on a workbench and put on handle (B) ass'y. The tightening torque is acceptable if the bolt is put handle (A) ass'y on Switch Lever (B) [114]. Socket Hd. Adjust...
... tightening torque excessively. Remove the cylinder head section and the housing section to 10-5 (2), (3). Trigger Spring [97] Trigger [98] Switch Lever (B) [114] Lever Stopper [116] Spring [129] (b) Reassembly Reassemble handle (A) ass'y and handle (B) ass'y according to isolate the handle section. Overtightening the Hex. Place handle (B) ass'y on a workbench and put on handle (B) ass'y. The tightening torque is acceptable if the bolt is put handle (A) ass'y on Switch Lever (B) [114]. Socket Hd. Adjust...
Service Manual
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.... DESCRIPTION 501 CHARGER (MODEL UC 7SD) 502 875-769 SAFETY GLASSES 503 885-360 CASE 504 944-458 HEX. USED 1 1 1 1 REMARKS OPTIONAL ACCESSORIES ITEM NO. BAR WRENCH 4MM NO. DESCRIPTION * 601 885-246 LUBRICANT OILER (A) * 601 885-546 LUBRICANT OILER (A) 602 317-918 GREASE (ATTOLUB NO. 2) 500G NO. CODE NO. USED REMARKS 1 1 FOR USA, CAN 1 --- 4 --- * ALTERNATIVE PARTS Printed in Japan...
.... DESCRIPTION 501 CHARGER (MODEL UC 7SD) 502 875-769 SAFETY GLASSES 503 885-360 CASE 504 944-458 HEX. USED 1 1 1 1 REMARKS OPTIONAL ACCESSORIES ITEM NO. BAR WRENCH 4MM NO. DESCRIPTION * 601 885-246 LUBRICANT OILER (A) * 601 885-546 LUBRICANT OILER (A) 602 317-918 GREASE (ATTOLUB NO. 2) 500G NO. CODE NO. USED REMARKS 1 1 FOR USA, CAN 1 --- 4 --- * ALTERNATIVE PARTS Printed in Japan...
