Hitachi NR90GC Support Question

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Question posted by mwraight on June 23rd, 2020

Nr90gc Has Gun Nailer

My gun has been cleaned but I fire one nail and it won't fire another one until it has done its cycle then it fires one more again any suggestions as to what is wrong thanks

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Answer #1: Posted by Odin on June 23rd, 2020 11:00 AM

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Odin

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See the first four listed PROBLEMs at https://www.manualslib.com/manual/520273/Hitachi-Nr-90gc.html?page=21&term=trouble&selected=2.

If the issue persists or if you require further advice--or if these instructions don't seem to apply to your model--you'll have to consult the company. (Use the contact information at https://www.contacthelp.com/hitachi/customer-service.)

Hope this is useful. Please don't forget to click the Accept This Answer button if you do accept it. My aim is to provide reliable helpful answers, not just a lot of them. See https://www.helpowl.com/profile/Odin.

Related Hitachi NR90GC Manual Pages

Service Manual - Page 1

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

Service Manual - Page 4

... in one hour 2-actioned nail feeding --- 1 --- 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 share. PRODUCT NAME Hitachi 90 mm (3-1/2") Gas Strip Nailer, Model NR 90GC 2. MARKETING OBJECTIVE Today, one company has been monopolizing the gas nailer markets. APPLICATIONS Floor and framing Truss build-up...

Service Manual - Page 5

...Gas nailer Model NR 90GC Driving system Reciprocating piston type Weight Dimensions (Length x Height x Width) Nail feed system Nail capacity 3.5 kg (7.7 lbs.) 347 mm x 353 mm x 108 mm (13-21/32" x 13-29/32" x 4-1/4") Spiral spring 37 nails...NR 90GC is released and pressed again. --- 2 --- After nailing once, nailing will not be possible again until the trigger is equipped with...

Service Manual - Page 6

...x 3-1/2") Max. 4.6 mm (0.181") Max. 31.7 mm (1.248") Paper tape Fig. 1 Dimensions of nails and subsequent damage to use P's 2" Roundrive nail (eccentric full round head nail) with a weak paper tape. However, some D-head nails made by P. It is recommended to the nailer. Nail Selection The Model NR 90GC utilizes D-head (clipped head) nails collated with the Model NR 90GC.

Service Manual - Page 7

Figure 2 shows a comparison between the pneumatic nailers Models NR 90AD and others and the gas nailer Model NR 90GC on its combustion. Choose suitable nails and workpieces according to the output energy of a gas nailer cannot be adjusted optionally. The output energy of the pneumatic nailer Model NR 90AD. However, the output energy is changed because environmental conditions...

Service Manual - Page 9

... basic safety precautions in its use. Salespersons must be completely eliminated. For the U.S.A. Accordingly, general precautions and suggestions for use of pneumatic tools, and specific precautions and suggestions for the use of the Model NR 90GC Nailer by the customer. PRECAUTIONS IN SALES PROMOTION In the interest of promoting the safest and most efficient...

Service Manual - Page 11

...drive nails and staples, there is an ever-present danger of hand-held battery-powered motor operated tools and ... 2000 EN 50260-1 2002 Hand-held-non-electric power tools Safety of misfiring and subsequent possible serious injury.... Eye and face protection 1926.302 Power-operated hand tools Portable, Compressed-Air-Actuated, Fastener Driving Tools-Safety Requirements for applicable items. Some...

Service Manual - Page 13

...aid of a magazine unit to feed nails to the combustion chamber. The combustion chamber is a nailer that drives nails into three sections: Output section, head section and handle section. The motor is... of a pneumatic nailer except the magazine section. The electrical wiring connects the battery, trigger switch and fan switch. This is the Hitachi's first gas strip nailer and there is similar...

Service Manual - Page 15

...114] to Combustion chamber O-ring [36] spray fuel into the nailer in the initial state. Thus the combustion chamber is sealed by...[24] surface is cut off from the atmosphere. The Chamber Head [22] is sealed by the O-ring [36] simultaneously. Switch... the Cell Lever [105] to the atmosphere (Fig. 4). (2) When nailing 1) Push up the Tension Plate [113] on the fan switch. Principle...

Service Manual - Page 18

... Lever (B) [114] Trigger [98] Fig. 10 (A --- A) --- 15 --- The nailer does not operate if the pressing amount of the Pushing Lever [64] is insufficient or if.... Therefore, the end of the Lever Stopper [116] is moved toward Switch Lever (B) [114] (Fig. 11). Then the nailer operates only when the Trigger [98] is turned on . The switch is depressed. Thus the switch of the Trigger [98] ...

Service Manual - Page 19

.... 15). Improper handling Problem Cause Remedy The Trigger [98] is driven. No nail is depressed insufficiently. The nailer produces heat. No electricity is fed. Discharging and cooling are apt to the uppermost position with an air gun.) Fig. 13 Filter Cover [5] Clean the Filter [4] (Fig. 13). No fuel is sent. No fuel is short...

Service Manual - Page 20

...under a low temperature condition. 0ûC or lower temperature Inspection method The metering valve is damaged. The nailer is left in direct sunlight or nails are driven continuously. Fuel is leaked. Instruct the customers necessary measures such as putting the fuel cell in ... cell held upright to a fuel cell: (1) Separate the metering valve and the cap from the gas cartridge.

Service Manual - Page 21

A large amount of fuel is under 1500 meters. --- 18 --- Remedy Use the nailer in a place such as highlands at an altitude of the air is sprayed but no combustion occurs. Problem Fuel is low in a place where the altitude is sprayed. Possible cause Inspection method The oxygen content of 1500 meters or more.

Service Manual - Page 22

...set properly to the uppermost position with the Battery [111] set (for Europe). Break in gas nailers. Connect properly (Fig. 16). The Battery [111] is not set properly. The Switch ...Lever Arms (A) [60] and (B) [62]. Keep depressing the Trigger [98] securely until the nailing operation is deformed. Connection failure between Internal Wire (A) [86] and the Controller [101]. Troubleshooting ...

Service Manual - Page 24

...251;C Altitude: Under 1500 m (5000 feet) Clean the Filter [4] (Fig. 13). Replace the Lead Valve [45]. Clean the Filter [4] (Fig. 13). Continuous operation: 1000 nails/h Abnormal noise is heard when the fan is ... and cooling are mounted properly. Replace the Piston Ring [38]. Do not use the nailer at high speed. The Battery [111] is clogged. Faulty insulation of the cylinder is...

Service Manual - Page 26

...). Adhesive fragments are on the guide face of general-purpose nailers Problem Possible cause Inspection method 1) Nails cannot be driven. Remedy Use specified nails. Magazine is abnormal (deformed, burrs, damaged or fatigued). Check if the nail feeder operates smoothly in the case of Nail Feeder (A) [112]. Nail inlet groove of the nose. Magazine is abnormal (deformed...

Service Manual - Page 27

..., damaged or fatigued). Do not use unspecified workpieces. After operating the nailer without nails, check if the driving operation is bent. Turn the adjuster to the lower position to decrease the pressure. Drive a nail into the injection port. Replace the head valve spring. 2) Nails are bent when being driven. Driver blade is abnormal (worn or...

Service Manual - Page 28

... is projected from the nose tip. Operate the nailer without nails and check if the driver blade is improperly adjusted. mechanism. Check if the nails are specified ones. Check if the driver blade tip is very hard. Replace Nail Feeder (A) [112]. --- 25 --- Problem Possible cause 3) Head of a nail driven into soft wood workpiece and check if...

Service Manual - Page 29

... explained below. (Disassemble the nailer according to rotate the Motor [6]. (5) Depress the Trigger [98]. Bolt M5 x 14 [1] and open the Top Cover [3]. (2) Remove the Hex. Clean Spark Plug (A) [11]. ... 5. DISASSEMBLY AND REASSEMBLY".) Remove the fuel cell then set nails and the battery. (1) Remove the Hex. Bolt M5 x 20 [13] and remove the Cylinder Head [14] from the spark plug (Fig. 19) as...

Service Manual - Page 31

..., ft-lb) 3.4 0.7 (35 7, 2.5 0.5) 4.6 0.5 (45 5, 3.4 0.4) 1.0 to 1.5 (10 to 15, 0.7 to tighten the screw of the head securely before driving nails. 10-1. DISASSEMBLY AND REASSEMBLY The items particularly necessary for each part Bolt and others Hex. Oil required: Hitachi Gas Nailer Lubricant 8 oz. (250 cc) oil feeder (Code No. 885-246) (Code No. 885-546) Use...