Manuals for Dong-I Marine Transmissions (Gearboxes)
Dong-I, also known as D-I Industrial is a South Korean manufacturer of marine transmissions. The company was founded in 1990.
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Thanks,
Dennison
3 simple steps to make your diesel system reliable and robust
STEP ONE - Get the manuals for your equipment
Owner, Workshop and Parts Manuals are important documents that should be part of every vessel's library. They contain the detailed information necessary for safe operation, maintenance and correct servicing.
The manuals on this page are provided for public information and education and can be downloaded for free. All copyrights belong to copyright holders stated in the documents.
congratulations - by downloading these free manuals you are taking an important step towards making your engine more reliable and robust.
STEP TWO - regular maintenance
Simple, regular maintenance is the easiest, quickest and cheapest way to avoid problems and accelerated engine wear. Most expensive repairs start from a lack of basic maintenance or ignoring small warnings. The work is not difficult - it just needs to be done.
The purpose is so that we can enjoy our boat for all the reasons we bought her. Trust yourself. Do the work regularly and be methodical.
Download free checklists here
if you need clear, easy-to-understand help
300+ drawings
Seeing is Understanding
Marine Diesel Basics 1
Maintain, Winterize and Recommission
• explains all parts of the marine diesel system - fuel,
lubrication, breathing, electrics, stern gland, propeller etc.
• 140+ tasks, 300+ drawings, 222 pages
• tasks are fully explained with clear drawings and minimal text
• all tools & supplies needed are illustrated for each task
• paperback US$15.99 £10.99 €12.99
• ebook (kindle, kobo, ibooks, google, epub) US$9.99
STEP THREE - keep a Maintenance Logbook
Keep a detailed and accurate record:
- all the work done on your diesel system - what, when & by who
- inventory of serial numbers, component descriptions
- early warning of potential problems
- time and details of any changes in performance
Use a notebook or use your iPad, tablet or desktop and record the information in an editable PDF directly as you work.
click to enlarge
Maintenance eLogbook
If you've every struggled to keep a logbook, this editable eLogbook may be exactly the help you need.
- "fillable form" PDF
- clickable checklists
- write, edit details of all tasks completed
- 40+ drawings to help inspections
- all common measurements with live calculators
- just $7.99 196 pages
"the Perfect Logbook" - verified purchaser
Marine Transmission
Catalog
14 pages
publ. February 2009
3 MB file
Service Parts List
18A-K
25AL-J
13 pages
publ. 2017
3 MB file
Service Manual
25AF
280-HL
38 pages
publ. September 2017
3 MB file
Marine Transmission Data
25AL
1 page
publ. September 2007
<1 MB file
Marine Transmission Drawing
25AL ratio 1.64
1 page
publ. June 2018
< 1 MB file
Marine Transmission Data
50A
1 page
publ. September 2017
<1 MB file
Service Parts List
50A-I
14 pages
publ. 2017
3 MB file
Service Parts List
DMT 90A-J
14 pages
publ. 2017
3 MB file
Marine Transmission Data
DMT 90A
1 page
publ. September 2017
<1 MB file
