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.

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
Nikon 35mm f/2.8 AiS Tear Down and Overhaul – Rediscovering a forgotten favourite
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.
200mm f/4 K Disassembly, cleaning and overhaul.  The lens that came from the lineage started the telephoto era of Nikon F.

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 –

Nico van Dijk Maintenance and cleaning a Nikkor-AI 1.8/50 mm

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 Nikkor-Q – Tinkering with Camera

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):


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s