Triumph Wedge Owners Association
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D - Transmission TSBs

TSB/
Doc
No.
Date
Issued
Applies
To
Subject
Related
TSBs/
Docs
Notes

73-D-8
Sep-73
Picture
Clutch Pedal Lubrication
 
 

73-D-10
Nov-73
Picture
Rear Axle and Gearbox
 
 

75-D-3
Mar-75
Picture
Gearbox Oil Leaks
 
 

75-D-6
May-75
Picture
Selector Shaft Yoke Plastic Bush Working Loose
76-D-6A
76-D-6B
Applies to 4-speed gearbox

76-D-6A
Jun-75
Picture
Selector Shaft Yoke Plastic Bush Working Loose
76-D-6
76-D-6B
Applies to 4-speed gearbox

76-D-6B
Oct-75
Picture
Selector Shaft Yoke Plastic Bush Working Loose
76-D-6
76-D-6A
Applies to 4-speed gearbox

77-D-1
Jan-77
Picture
Revised Gear Set
77-D-2
Applies to 4-speed gearbox.
Parts change at VIN ACW4417, gearbox No. CG36219

77-D-2
Jan-77
Picture
Reverse Gear Ratio
77-D-1
Applies to 4-speed gearbox.
Parts change at VIN ACW4417 approximately

77-D-3
Feb-77
Picture
Automatic Transmission Kickdown Cable
 
Parts change at transmission no. 0273381

77-D-4
Mar-77
Picture
Automatic Transmission Oil Cooler Cleanliness
 
 

77-D-5
Apr-77
Picture
Automatic Transmission Fluid Level
77-A-6
77-D-9
Replaces TSB 77-A-6

77-D-6
May-77
Picture
Crankshaft Spigot Bush
 77-A-1
Parts change at 5-speed gearbox No. 2001B

77-D-7
Jun-77
Picture
Reverse Gear Baulk Plate Adjustment
 
Applies to 5-speed gearbox

77-D-8
Jun-77
Picture
5 Speed Gearbox
77-D-8A
T80/002
T80/018
 

77-D-8A
Jun-77
Picture
5-Speed Gearbox
77-D-8
T80/002
T80/018
 

77-D-9
Nov-77
Picture
Fluid Filling Procedure for Rebuilt Automatic Transmission
77-D-5
 

77-D-10
Dec-77
Picture
Loss of Clutch Hydraulic Pressure
 
Parts change at VIN ACW40223

79-D-1
Apr-79
Picture
5 Speed Gearbox
79-D-2
 

79-D-2
Oct-79
Picture
5-Speed Gearbox Laygear End Float
79-D-1
 

T80/001
Jan-80
Picture
Clutch Mechanism Lubrication
 
 

T80/002
Jan-80
Picture
5 Speed Gearbox Oil Specification
77-D-8
77-D-8A
T80/018
 

T80/005
Jan-80
Picture
Rear Axle Ratio Change
 
 

T80/014
May-80
Picture
Rear Axle Whine
 
 

T80/018
Jul-80
Picture
Oil Recommendation 5 Speed Gearbox
77-D-8
77-D-8A
T80/002
 

T81/01
Jan-81
Picture
Axle Shaft Circlip Groove
 
Parts change at VIN 204451

T81/15
Jul-81
Picture
Gearbox Levels, PDI
 
 

​Triumph Wedge Owners Association (TWOA)
TWOA is an Affiliate Chapter of the Vintage Triumph Register
  • Home
  • About/Join
    • Club Benefits
    • Sample Newsletter
    • Join or Renew Online
    • Join or Renew by Mail
    • Board of Directors
    • Bill Sweeting Remembered
    • Contact Us
  • Tech/Parts
    • Articles >
      • FASD Technical Specifications
      • Fuel Injection >
        • The TR7 ECU - Bosch
        • The TR8 ECU - Lucas
        • Heated O2 Sensors
        • Inside an FI Tank
        • Noid Test Light
      • Members Only Articles
      • TR7 4-Speed Overdrive Conversion
      • TR8 Cooling Fan Circuit
    • Dealer Documents >
      • Memos
      • Recall Campaigns
      • Technical Service Bulletins >
        • A - Engine
        • B - Electrical
        • C - Body
        • D - Transmission
        • E - Paint
        • Z - Recalls
        • F - Chassis
        • G - Miscellaneous
        • H - Air Conditioning
        • TSB Numbers Decoded
      • Training
      • Service Tools
    • Model Information >
      • Brochures
      • Deciphering The Wedge >
        • Component Serial Numbers
        • Paint and Trim Codes
        • VIN and Component Serial Number Locations
        • VIN Numbers Decoded
      • Labels and Decals
      • TR7 Special Editions >
        • Limited Edition
        • Spider
        • Southern Skies
        • 30th Anniversary Edition
      • TR8 >
        • BL Motorsports: Hurdwell Memo
        • California Air Resources Board Emissions Certifications
      • Wedge Colours
    • Parts Suppliers
    • Cottage Industry Parts
    • TWOA Parts
    • TWOA Tool Rentals >
      • TR7 Head Honcho
      • TR7 Head Honcho in Action
      • Fuel Injection Tools >
        • Gizmo
        • Looking Glass
  • Resources and Services
    • 2021 Wedge Calendar
    • Reproduction Suggestions
    • Cars For Sale
    • Cars Wanted
    • Parts For Sale
    • Parts Wanted
    • Harris Mann Art Prints
    • Mailing List Archives
    • Mailing List, Forums & Clubs
    • Gems: TR8CCA+WWWedge
    • Tech: Best of the Web
    • Wedge List Files
  • Events
    • Calendar of Upcoming Events
    • 2020 TWOA Virtual Car Show Results
    • Past Event Photos >
      • Britain on the Green 2015
      • The Kastner Cup 2015
      • Triumphest 2014
      • VTR National Convention 2014
      • The Gathering Dobson NC 2013
      • Dobson The Gathering 2012
      • South Central VTR Regional 2012
      • Triumphest 2012
      • Maryland British Car Day 2011
      • Dobson Gathering 2010
      • Roadster Factory 2010
      • British Invasion 2009
      • Roadster Factory 2009
    • VTR National Awards History
  • Members
    • 2019 Directory Corrections
    • Newsletters
    • TWOA Parts Store
    • Sun Visor Information
    • Regalia
    • Official TWOA Documents
    • FI hose replacement
    • FASD Photos
    • Rear End Spring Experiment
    • Bushing Tests
    • Bushing Buddy - Installation Tool
    • Odd's Engine Removal Tools