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Hitachi NR83A 3-1/4" Full Head Nailer

 Hitachi NR83A 3-1/4" Full Head Nailer Parts

Page A

 Fig # Part # Img Part Name Availability Price Qty
1949832
Hex Socket Head Bolt M6X45
Ships in 9 - 10 business days
 $4.58
2949455
Spring Washer M6 (10 Pcs.)
In stock
7 available
 $1.09
3877330
Top Cover
Ships in 9 - 10 business days
 $5.57
4949-652
Hex. Socket HD. Bolt M6X25 (10 Pcs.)
In stock
6 available
 $3.51
5B877324
Exhaust Cover
In stock
2 available
 $25.10
6877325
Gasket B
In stock
8 available
 $4.94
7877329
Gasket (F)
In stock
16 available
 $1.75
8877328
Exhaust Piece
In stock
2 available
 $19.78
9877-326
Gasket (C)
Note: Till June, 1988
In stock
3 available
 $2.48
9A877854
Gasket C
Note: Since July, 1988
In stock
9 available
 $2.48
10872-821
Valve O-Ring
Note: Till January, 1987
In stock
8 available
 $3.15
11A878-417
Exhaust Valve
In stock
11 available
 $6.30
12A877-307
Head Cap and Gasket Set
Note: Includes figure 9A
In stock
3 available
 $42.15
13877368
O-Ring (1 AP-48)
In stock
18 available
 $2.13
877-375
Piston High Speed Steel Tip
Ships in 9 - 10 business days
 $351.30
Fig #Part #ImgPart NameAvailabilityPrice
885915
Piston Driver Assembly
Note: Includes figure 13
In stock
12 available
 $89.41
15877316
O-Ring S-90
In stock
20 available
 $2.79
16877312
Cylinder O-Ring (I.D 63.1)
In stock
18 available
 $2.13
17877-318
Cylinder Plate
Ships in 9 - 10 business days
 $10.08
18877-313
Cylinder O-Ring (I.D 79.3)
In stock
25+ available
 $2.13
19884-068
Cylinder
In stock
2 available
 $57.90
20877314
Cylinder O-Ring (I.D 69.3)
In stock
11 available
 $2.13
21877-317
Cylinder Ring
In stock
21 available
 $2.99
22877-321
Cylinder Spring
In stock
2 available
 $1.74
23877322
Base Washer
Backorder:
Unavailable until 12/15/2014
 $2.48
24877-310
Cylinder Guide
Backorder:
No ETA.
 $25.46
25877327
Gasket (G)
In stock
24 available
 $1.04
26B877-835
Body (B)
Ships in 9 - 10 business days
 $295.05
27308-864
Name Plate Obsolete - Not Available
Discontinued
$0.00N/A
28877315
Cylinder O-Ring (I.D 63.9)
In stock
8 available
 $2.13
Fig #Part #ImgPart NameAvailabilityPrice
29877-319
Cylinder Bumper Obsolete - Not Available
Note: Till February, 1987
Discontinued
$0.00N/A
878-303
Piston Bumper
In stock
3 available
 $42.15
883511
Piston Bumper (B)
In stock
12 available
 $16.88
878-303
Piston Bumper
In stock
3 available
 $42.15
32877-334
Gasket (A)
In stock
17 available
 $2.48
33B888245
High Tension Bolt M6X18
Backorder:
No ETA.
 $1.04
36C878-419
Guard (A)
In stock
1 available
 $6.30
37877402
Washer
In stock
4 available
 $3.83
38884-076
Nose
Ships in 9 - 10 business days
 $301.81
40949-760
Hex. Socket HD. Bolt M8X25 (10 Pcs.)
In stock
4 available
 $5.94
42877331
Gasket (D)
In stock
25+ available
 $2.99
43A878-311
Cap
In stock
18 available
 $5.26
44949454
Spring Washer M5 (10 pcs.)
In stock
9 available
 $1.02
45A949658
Hex. Socket Hd. Bolt M5 X 18 10 Pcs.
In stock
2 available
 $2.78
46872-035
Dust Cap
In stock
4 available
 $1.03
Fig #Part #ImgPart NameAvailabilityPrice
47949-866
Roll Pin D3X30 (10 Pcs.)
Ships in 9 - 10 business days
 $3.85
48875-650
Safety Bolt
In stock
7 available
 $1.04
49877-365
Spring
In stock
21 available
 $2.13
50877-391Z
Pushing Lever
In stock
3 available
 $45.69
51949555
Nut M5 (Black)
In stock
6 available
 $1.09
52875-643
Plunger Spring
In stock
15 available
 $1.04
53874436
O-Ring P-4
In stock
15 available
 $1.03
54A877-338
Plunger (A)
In stock
4 available
 $1.58
55877-337
Valve Bushing
In stock
3 available
 $15.46
56875-638
O-Ring (S-12)
In stock
25+ available
 $2.99
57876203
Trigger
In stock
1 available
 $2.79
58877-339
Plunger (B)
In stock
6 available
 $3.53
59A878734
Valve Packing
In stock
25+ available
 $3.99
60875645
Urethane Ball (C) D7.14
In stock
13 available
 $4.25
61875-644
Valve Plate
In stock
2 available
 $1.04
Fig #Part #ImgPart NameAvailabilityPrice
62A877-335
Trigger Valve Bushing
In stock
1 available
 $8.08
63A878-121
Trigger Plunger
In stock
1 available
 $1.74
64877393Z
Nail Feeder
In stock
3 available
 $54.88
65877-395Z
Spring Shaft Obsolete - Not Available
Note: Till January, 1987
Discontinued
$0.00N/A
65A878-418
Needle Roller
Note: Since February, 1987
In stock
11 available
 $1.75
66A878421
RIBBON SPRING SET
Note: Includes figure 65A
Backorder:
No ETA.
 $10.88
67876-465
Nylon Nut M4
In stock
2 available
 $1.03
68949453
Spring Washer M4 10 Pcs.
Ships in 9 - 10 business days
 $2.32
69884-570
Magazine Assembly
Ships in 9 - 10 business days
 $105.35
70876550
Sleeve
In stock
1 available
 $1.04
71949824
Hex. Socket Hd. Bolt M5 X 45 10 Pcs.
In stock
1 available
 $4.25
72949-662
Hex. Socket HD. Bolt M5X25 (10 Pcs.)
In stock
3 available
 $3.15
73949-424
Washer M5 (10 Pcs.)
In stock
2 available
 $1.04
74877396Z
Stop Lever
In stock
2 available
 $4.94
75877398
Collar
In stock
2 available
 $2.79
Fig #Part #ImgPart NameAvailabilityPrice
76877-397
Stopper Spring
In stock
1 available
 $4.25
77949-650
Hex. Socket HD. Bolt M4X15 (10 Pcs.)
In stock
1 available
 $2.48
78874-820
Plunger O-Ring
In stock
25+ available
 $2.99
79877-371
Nylon Nut M5
In stock
25+ available
 $1.04
81884-570
Magazine Assembly
Note: Includes figures 44, 67-71, 74-77 and 79
Ships in 9 - 10 business days
 $105.35
83884-070
Warning Label
In stock
2 available
 $1.75
500872422
Hex. Bar Wrench 6mm
In stock
2 available
 $1.31
501944459
Allen Wrench For M5 Screw
In stock
3 available
 $1.28
502944458
Hex. Bar Wrench 4MM
Backorder:
Unavailable until 11/30/2014
 $1.58
503A875769
Eye Protector
Ships in 9 - 10 business days
 $12.35
505882-413
Caution Tag
Ships in 9 - 10 business days
 $1.75
506882-414
Leaflet
Ships in 9 - 10 business days
 $1.75
601877-375
Piston High Speed Steel Tip
Ships in 9 - 10 business days
 $351.30
602876-762
Single Shot Parts
In stock
2 available
 $88.43
603317-918
Grease (Attolub No.2) 500G
In stock
2 available
 $33.42
Fig #Part #ImgPart NameAvailabilityPrice
605887768
Pin
Backorder:
Unavailable until 12/31/2014
 $1.80
606880407
Tape Optional
Ships in 9 - 10 business days
 $1.75
607878-223
Remote Fire Valve
Ships in 9 - 10 business days
 $341.63
80018000
O-Ring Overhaul Kit (Includes Grease)
Backorder:
No ETA.
 $31.62

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Repair Stories
Symptom:
Broken Driver
Parts Used:
Part Number:
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Entry Date:2014-02-13 12:37:34
3 of 6 customers found these instructions helpful
driving pin/shaft
So simple: take the four head bolts out, remove head, (careful with gasket) remove old piston with broken drive pin, lubricate new O ring on new piston, and slide it down the cylinder making sure the drive pin is oriented with the concave side toward the back of the gun. Install the four bolts. That\'s it.
Did these repair instructions help you?
Discussion
Discussion for the Hitachi NR83A 3-1/4" Full Head Nailer

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  • Subject:
  •  
  • Comment:
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jamesr
Question: Remote Firing Valve

jamesr

what is a remote firing valve
chiselcreek
Question: Air Leak

chiselcreek

I have a major air leak around the trigger. When I hold the tigger in the air leak stops and the gun will bump nail. When I release the trigger the air leaks and the gun will not build pressure. I change the two o-ring in the trigger area and clean the ball. Any help?
WJA
Reply: Air Leak

WJA

Hello chiselcreek,

There a quite a few parts involved with the trigger. Check them all for wear. Hopefully it will be one of those parts.

Good luck,
-WJA
Tinkerdave
Reply: Air Leak

Tinkerdave

Hi chiselcreek,
Replace all the trigger parts as wear in this area is accumulative and you will drive yourself nuts guessing at what part is causing the problem. Even if you do find the part causing the problem you will have future problem in this area if all are not replaced together.Hope this helps.Good luck.
Tinker
dizj1
Question: Leak

dizj1

I took apart my NR83A and replaced all O rings and most gaskets. Including trigger o-rings. Put everything back together and I have massive air leakage from exhaust draining my compressor pressure. Any ideas?
Tinkerdave
Reply: Leak

Tinkerdave

Hi dijz1: Did you replace O-Ring (S-90) Part Number: 877-316? This is the bulkhead O-ring where a lot of leaks are from.Also does the tool shoot ok other then the air leak?Knowing this will help us troubleshoot the tool better for you.
Tinker
KTR
Reply: Leak

KTR

The cylinder on the Hitachi move up and down to fire. Most likely you need to turn the gun upside down and "whack" the top of the gun on a piece of wood to cause the cylinder to seal to the head valve. If that does not work you will need to replace the head valve (877-307).
Ken
629260
Question: Rebuilding Hitachi Nr83aa- Rippe...

henriksen2008

I have to replace the cylinder ring on this nail gun, but since it was ripped i'm not sure where it goes on the cylinder. I think it goes over where the small holes are?
Tinkerdave
Reply: Rebuilding Hitachi Nr83aa- Rippe...

Tinkerdave

Hi, Yes it goes over the holes and is a cylinder check valve for return air. Nail guns use low pressure to pull the piston driver assembly back up to the top of the cylinder and this check valve helps it do that. Hope this helps.
americantoolman
Question: Hitachi NR83A Framing Nailer - P...

americantoolman

The piston driver on my tool does not retract like it should when bump firing the tool. It hangs up until I release the trigger, then retracts as norma. It acts like a sequential fire tool. Something weird in the exhaust system? Any ideas? I just cleaned the tool and replaced all rings and packings. Thanks, Mike.
americantoolman
Reply: Hitachi NR83A Framing Nailer - P...

americantoolman

[QUOTE=americantoolman;5093]The piston driver on my tool does not retract like it should when bump firing the tool. While holding the trigger and pressing to wood it fires but hangs up on return. If I fire like a sequential fire tool pulling the trigger each time it fires and retracts like normal.

I just cleaned the tool and replaced all o rings and packings. Changed out cylinder seal and rechecked trigger parts. Now I'm begining to swap out parts - process of elimination. Anybody seen this before? Any ideas? Thanks, Mike." Thanks, mike.
UtahAV
Reply: Hitachi NR83A Framing Nailer - P...

UtahAV

Hi Mike,

I am stumped with your problem as well. I can't figure why the gun would fire OK sequentially but not while bumping. Many issues with nail gun pistons not returning are caused by the trigger valve. You might want to check there for bad o-rings or maybe debris from worn part elsewhere in the gun.

Sorry I can't be more help. Let us know how it turns out.

Good Luck!

-UtahAV
-Mark
americantoolman
Reply: Hitachi NR83A Framing Nailer - P...

americantoolman

Finally figured it out. Simple really. The adjustable screw on the push lever was too far out, eventhough it was just short of the valve bushing it would not allow the plunger to move out enough to fully cycle the tool. I guess the push lever was out of play while firing sequentually.
UtahAV
Reply: Hitachi NR83A Framing Nailer - P...

UtahAV

Good to hear that it was nothing serious. I hadn't though of that. Makes sense though.

Thanks for letting us all know what the solution was!

-UtahAV
-Mark
I took apart the strip that holds the nails and thee ribbon spring came off I can not figure out how to put it back on. Any one with suggestions or video? Thank you
fancyboxy