Internet Nikon Repair Resources


80-200mm f/4 AiS disassembled.  Photograph courtesy Richard Haw (

Some resources are very detailed, others skim over; use them with care.  Some of the resources listed are in Japanese.  Well, if you don’t read Japanese, you can (i) look at the photos; (ii) use online translation tools (inaccurate but get you there somewhat).

Enjoy.  Remember – if you mess up your lens, it is your responsibility.

About me

I am an engineer by training, I enjoy photography, love listening to music, and am addicted to scuba diving; hence the nick diediemustdive.  You are here not to read about me, but about the lens I am about to describe, but then you just might be interested to know a little more About Me.  Go ahead and click on that link, if you will.

My Posts

Lens Repair (1): Some Thoughts – To begin the process of lens repair.

Lens Repair (2): Major Parts of a Lens (Manual Focus) – Do you know where you’re going to?

Lens Repair (3): Working from the rear… – Accessing the rear part of the lens.

Lens Repair (4): Coming from the front – Go from the front

Lens Repair (5): Working the Helicoids – Alignment, alignment, alignment, and, you guessed it, alignment. (Under construction)

28mm f/2.8 Nikon Lens Series E – Cleaning – A budget wide angle
Nikon 35-70mm f/3.3-4.5 AiS Disassembly – The AiS lens that is full of plastic parts
36~72mm f/3.5 Nikon Lens Series E Disassembly and Cleaning – The budget zoom lens after the venerable 43~86mm f/3.5
Nikon 50mm f/1.4 Ai Disassembly and Cleaning – the return of an old friend

50mm f/1.8 Nikon Lens Series E – Disassembly and Cleaning (updated 1 Apr 2017) – the start of the new budget era.

5cm f/2 Nikkor-S Disassembly – the workhorse normal lens – what do you do when there is no screw at the bayonet mount? (Under Construction)

80-200mm f/4.5 Zoom-Nikkor.C Disassembly and Cleaning – The lens that changed the perception that zoom lenses were convenient tools and could not be relied upon to perform to an excellent level.

Specific Lenses

Order large to small aperture (i.e. f/1.4, f/2, f/2.8) then older to newer lenses (i.e. pre-Ai to Ai to AiS)


AF 20mm 1:2.8D – Clean sticky aperture blades – Shimon Mor

20mm f/4 Ai – 修理人たぐちの徒然日記 (in Japanese)


Repair: Nikkor-N 24mm f/2.8 Auto – Richard Haw –

24mm F/2.8 AI rebuild ms01rci (Youtube Video)


28mm f/2 Nikkor-NC Auto 分解 (in Japanese)

28mm f/2.8 Ai – F’sトップ (in Japanese)

28mm f/2.8 AiS – stuck aperture and some fungus.  Didn’t touch the helicoid, but there is a photo from the front that appears to show a second set of helicoid keys.

28mm f/2.8 Nikon Lens Series E – Cleaning – ddmd

28mm f/3.5 AiS – Richard Haw.  Details on helicoid disassembly and aperture unit disassembly, cleaning and re-installation.


35mm f/1.4 AiS – かっつんのメモ用紙 (in Japanese) Part I

35mm f/1.4 AiS – かっつんのメモ用紙 (in Japanese) Part II

35mm f/2 Nikkor-O

35mm f/2 Ai – ニコン Nikon Ai Nikkor 35mm F2 F2.0 整備 分解 修理

35mm f/2.5 E – (in Japanese)

35mm f/2.5 E – Shin☆mura Family (in Japanese)

35mm f/2.8 Nikkor-S Auto 清掃

35mm f/2.8 Nikkor-S Auto Matt Bierner (YouTube)

35mm f/2.8 K (Part I) – Mikeno62 (YouTube)

35mm f/2.8 K (Part II) – Mikeno62 (YouTube)

35mm f/2.8 K – NIKKOR 35mm F2.8 分解清掃

35mm f/2.8 K – New Nikkor 35mm F2.8 No.775119 分解清掃(クモリ除去)

35mm f/2.8 Ai – Richard Haw

35mm f/2.8 AiS – F’sトップ (in Japanese)

PC-NIKKOR 35/2.8 – 修理人たぐちの徒然日記

PC-Nikkor 35/3.5 – Richard Haw

Normal Lens

45mm f/2.8 GN Auto-Nikkor – Richard Haw

50mm f/1.2 AiS (Dust Removal) – Richard Haw f/1.2

50mm f/1.4 Nikkor-S – Richard Haw

50mm f/1.4 New Nikkor レンズの分解清掃 –

50mm f/1.4 Ai – focus on the helicoids with good photos to illustrate process for 3+ screws 2 AR aperture coupling screw version, with a photo to show the version without the coupling screws, in Japanese Aiニッコール50mmF1.4の分解

50mm f/1.4 Ai

50mm f/1.4 Ai – complete disassembly – with good photos to illustrate process, in Japanese 修理人たぐちの徒然日記 Ai NIKKOR 50/1.4 編

50mm f/1.4 Ai – optical part only, in Japanese, Ai NIKKOR 50mm F1.4 分解清掃

50mm f/1.4 Ai – Cleaning aperture blades レンズの分解清掃 –

50mm f/1.4 Ai – Nikon NIKKOR 50mm 1:1.4 Cleaningしてみたよ (Youtube)

50mm f1.4 Ai partial disassembly to show the difference between the “usual” construction of the 50mm f/1.4 Ai and the 2 AR aperture coupling screws version), in Japanese.  Ai Nikkor 50mm F1.4の内部構造が違っていた件

50mm f1.4 Ai Disassembly (erroneously labeled as AiS, version with 2 AR aperture coupling screws, same as my blog post, also omitted helicoid alignment part – dangerous to follow this blog!)  – dehk –

50mm f1.4 AiS Disassembly (erroneously labeled as Ai) in Japanese, Ai Nikkor 50mm F1.4の分解方法

50mm f1.4 AF Disassembly – dehk –

50mm f/1.8 Ai – mikeno62 – Cleaning aperture blades in Nikon Nikkor 50mm 1:1.8 Ai –

50mm f/1.8 Nikon Lens Series E – Cleaning – ddmd

50mm f/1.8 AiS – Richard Haw

NIKKOR-S 50/2 其の壱 – 修理人たぐちの徒然日記 – (Blog mislabeled as Nikkor-S 50/1.4)

NIKKOR-S 50/2 其の弐 – 修理人たぐちの徒然日記 – (Blog mislabeled as Nikkor-S 50/1.4)

NIKKOR-H AUTO 1:2 f=50mm レンズの分解清掃 –

50mm f/2 HC – たっちゃんのレンズ沼 –

50mm f/2 K –

50mm f/2K – Ai NIKKOR 50mm F2 分解清掃

50mm f/2 K – daitocamera – Replacement of lens grease

Nikkor (New) – Richard Haw

58mm f/1.2 Noct-Nikkor – Richard Haw


85mm f/2 Ai – 外装交換

85mm f/2 AiS – Richard Haw

85mm 2.0 AIS – mikeno65 Cleaning Aperture blades

85mm f/1.8 Nikkor-H 修理人たぐちの徒然日記コラム・ギャラリー 2015.04.03【Vol.1213】(グリス交換要領)

85mm f/1.4 AiS – mikeno65 sticky focus ring PART 1

85mm f/1.4 AiS – mikeno65 sticky focus ring PART 2


105mm f/2.5 Nikkor-P (Sonnar) Inside the focus helicoil’s in NIKKOR-P AUTO 1:2.5 f=105mm non-ai – mikeno62

The “spring” can be seen at about 8:00

105mm f/2.5 Nikkor-P (Sonnar) – Richard Haw

105mm f/2.5 Nikkor-P.C (Gauss) – Richard Haw

Nikkor 105mm f/2.5K – Richard Haw –


135mm f/2.8 Nikkor-Q – Richard Haw

135mm f/2.8 K/Ai – Richard Haw

135mm f/3.5 Nikkor-Q – Richard Haw


20cm f/4 ッコールQ オート 20cm F4 旧 –

20cm f/4 Nikkor-Q – Richard Haw

200mm f/4 Nikkor-Q – Richard Haw

Nikkor-Q Auto 200mm F4 分解 –

Nikkor-Q Auto 200mm F4.0を分解 –

Nikkor-QC Auto 200mm f/4 –

200mm f/4 K/Ai – Richard Haw

200mm f/4 K – Working with aperture blades – mikeno62

Ai NIKKOR 200mm F4 絞り羽 分解修理 ~前編~

Ai NIKKOR 200mm F4 絞り羽 分解修理 ~後編~

【第445沼】Nikon Ai NIKKOR 200mm f4 分解掃除 –

Standard Zooms

28-70mm f/3.5-4.5 AF の分解清掃

Nikkor AF 28-70mm f/3.5-4.5D の分解清掃 –

28-80mm f/3.5-5.6 AFD

35-70mm 3.3-4.5 AiS の分解

35-105mm f/3.5-4.5 AiS – コンパクトズーム Nikon Ai Zoom-Nikkor 35-105mm F3.5-4.5S

36~72mm f/3.5 Nikon Lens Series E Disassembly and Cleaning – ddmd –

36-72mm f/3.5 E – Hatena::Diary (in Japanese)

36-72mm f/3.5 E – UPA Blog (in Japanese)

43-86mm f/3.5 Zoom-Nikkor Auto Nippon Kogaku Japan – Richard Haw

43-86mm f/3.5 Zoom-Nikkor.C Auto Nikon – Richard Haw

43-86mm f/3.5 Zoom-Nikkor Ai – Richard Haw

43-86mm f/3.5 Zoom-Nikkor Ai – Daitocamera (YouTube) (in Japanese)

43-86mm f/3.5 Zoom-Nikkor Ai – F’sトップ (in Japanese)


70-210mm f/4 E分解・清掃

70-210mm f/4 E JWCのカメラとレンズの修理帳

75-150mm f/3.5 E – Richard Haw

ニコン Nikon Ai 75-150mm F3.5 Series E 分解 修理、シリーズE

80-200mm f/2.8 AF first version (push-pull)

80-200mm f/4 AiS – Richard Haw

80-200mm f/4 AiS – F’s トップ レンズの分解清掃

80-200mm f/4.5 Zoom-Nikkor.C Disassembly and Cleaning – ddmd

80-200mm f/4.5 Ai (early model) 前期型 分解掃除です – たっちゃんのレンズ沼

80-200mm f/4.5 K (Ai converted) [前編] 70年代の高級ズーム

80-200mm f/4.5 K (Ai converted) [後編] 70年代の高級ズーム

80-200mm f/4.5 Ai (late model) – F’s トップ レンズの分解清掃

80-200mm f/4.5 Ai –

80-200mm f/4.5 Ai (late model) – 風太郎のPな日々


55mm f/2.8 AiS – Richard Haw

55mm f/3.5 Micro-Nikkor-P – Richard Haw

105mm f/2.8 AiS Micro-Nikkor – Richard Haw

105mm 1:2.8 AF Focus problem mikeno62

Assemble AF MICRO NIKKOR 105mm 1:2.8 motion lapse film – Mikeno62 –

Working with aperture blades in AF Micro Nikkor 105mm 1:2.8 – Mikeno62 –

Extension Tubes


General Principles

Richard Haw ( has a good write-up on a number of topics, highly recommended read.

Camera and Lens Repair Essentials –

Best Practices – Part 1, Part 2, and Part 3

Repair – Helicoids

Fungus Cleaning

Fungus Cleaning

Ai Mod

Ai Conversion – Richard Haw

35mm f/2.8 Nikkor-S non-milling method –


FE/FM film advance fix – dehk –

Nikon EM (Jap)

Nikon F:

Service Manuals

Few and far in between for MF lenses, but some AF ones are available.

Artic Wolf – excellent site with lots of service manuals, mostly AF, cameras, accessories.

Allphotolenses (mostly instruction manuals, some service manuals):



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