Question about Hitachi NR83A2 2" To 3 1/4" Full Head Framer with Depth of Drive

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Hitachi leaking air from trigger NR90A - Hitachi NR83A2 2" To 3 1/4" Full Head Framer with Depth of Drive

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5 Related Answers

John Trevino

  • 1420 Answers

SOURCE: air leak

Several models of hitachi nailers share the same orings and other parts including the check ball under the trigger pin in your gun. Remove the roll pin holding the trigger to release the trigger pin, (plastic with one oring) then remove the valve with a screwdriver. Replace the vinyl check ball and seal. Parts are available at www.toolpartsdirect.com. This should fix the problem that you are describing, however use caution and check that the safety if properly adjusted. Enjoy

Posted on Dec 07, 2008

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John Trevino

  • 1420 Answers

SOURCE: Hitachi NR83A air leak

Most all Hitachi nailers that use the plunger style of firing/safety mech will leak air past plunger (part #877-339) when firing, however should not leak when connected to air or resting. If air is leaking past plunger when connnected to air check following:
Remove head to reveal cylinder plate (part#877-318). Remove plate and check outer oring for nicks or broken. If nicked or broken, replace and problem solved. If in good condition, remove cylinder guide (part #877-310) and check two outer orings for nick /cut. Use caution when removing/installing cylinder guide. It is easy to pinch orings when installing causing air leak at plunger. If orings are in good shape then problem is warped body of gun not allowing outer orings to seal. To check for warped body, use the cylinder plate as a guage by lowering it into the area where the cylinder guide rests. Good Luck with your repair.

Posted on Mar 12, 2009

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Anonymous

  • 548 Answers

SOURCE: Hitachi 83a Leaking Air from the Trigger

yes my guns i rebuild once a year at least

Posted on Aug 21, 2009

Anonymous

  • 66 Answers

SOURCE: hitachi nail gun nr90ad leaks from trigger when

The nail gun should have came with some lubricating oil. A couple of drops should be installed where you connect the air hose to the nail gun every time you use your nail gun (or per the manufactures specifications) This helps lubricate all the internal o-rings. You may have to put a few drops in and use the gun a bit to get it to seal up. If it still doesn't after that, it may need the o-rings replaced.

Posted on Jan 20, 2010

Anonymous

  • 5 Answers

SOURCE: Air leaking aroung the trigger assembly from my Hitachi NR83A

if you took the trigger apart the part that you unscrew has a nylon ball and a black rubber ring you should check them and make sure that you didn't loose them when you took it apart,if they are there, then you need to service the gun, and after you clean all the moving part and you put it back together, it may still leak from the top,Take a rubber hammer and give it a good hit,now not to hard, and it should seal

Posted on May 04, 2010

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Hitachi NR83 leaks from trigger

There are actually two trigger areas on this tool. There is the main trigger that uses an aluminum valve housing, plastic valve, a plastic ball, and most importantly a round, rubber seal under the ball. It is not an o-ring and often it gets bad which will cause the leak. Then there is a secondary trigger that the safety activates. Leaking air from there can be from a number of problems. Here is a diagram of your tool which will help you see what I am referring to.

http://www.toolpartsdirect.com/cgi-bin/schematic.cgi/hitachi/NR83A2_A2S_E2
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My hitachi nr 83a leaks air at the trigger

Often a trigger leak in the NR83A is caused by a bad gasket in the head #877-327. If this is improperly installed, cracked, or overcompressed it will cause the trigger to leak.
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Air leaking aroung the trigger assembly from my Hitachi NR83A

if you took the trigger apart the part that you unscrew has a nylon ball and a black rubber ring you should check them and make sure that you didn't loose them when you took it apart,if they are there, then you need to service the gun, and after you clean all the moving part and you put it back together, it may still leak from the top,Take a rubber hammer and give it a good hit,now not to hard, and it should seal
0helpful
1answer
0helpful
1answer

Air leak

Several models of hitachi nailers share the same orings and other parts including the check ball under the trigger pin in your gun. Remove the roll pin holding the trigger to release the trigger pin, (plastic with one oring) then remove the valve with a screwdriver. Replace the vinyl check ball and seal. Parts are available at www.toolpartsdirect.com. This should fix the problem that you are describing, however use caution and check that the safety if properly adjusted. Enjoy
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