The out shaft bearing had problems in early Silver engined '04-'06 models (with VIN last six digits up to Eng No 242554) . It is likely updated Silver engines finished after VIN 336042 (See Factory Service Technical News 114).
In early versions the bearing was fitted with an inadequate oil supply due to early bearing type used which often damaged the housing as well, so they updated the bearing type and sold an Output Bearing kit T3990192 for Silver painted engines and T3990193 for Black.
5 | T3990191 | Kit Torsional Damper Bearings | T3990191 Kit Torsional Damper Bearings | Genuine Triumph Motorcycle Part | £51.88 | 1 | Add |
5 | T3990193 | Kit Torsional Damper CVR & BRGS | T3990193 Kit Torsional Damper CVR & BRGS | Genuine Triumph Motorcycle Part | £51.88 | 1 | Add |
5 | T3990192 | Kit Torsional Damper CVR & BRGS | T3990192 Kit Torsional Damper CVR & BRGS | Genuine Triumph Motorcycle Part | £51.88 | 1 | Add |
with a Silver painted housing
T1260441 that did not quite match the original Silver engine case part
T1260133.
You can tell if the later version has already been fitted if it is painted Silver but a slight mismatch to original engine case color or obviously a Black painted updated version.
These parts were also sold as part of the larger highly discounted 'Factory Upgrade kit' sold by Triumph to address a number of early version's issues. It came with a very extensive parts and service kit worth well over US$1500 for about US$250. Many riders bought them for the cheap service parts and the complete NOS upgrade kits now sell for upwards of US$2000+. These had detent springs and many other bits and pieces including some transmission gears etc.
The Black engines all had the updates from factory.
#17
T1260441 - T3 COVER OUTPUT SHAFT ( T3 CVR O/P SHAFT PAINTED -
This one is silver)
#18 T3600068 - T3 SEAL OIL 40 62 6
#19 T1260184 - T3 GASKET OUTPUT SHAFT
#21 T1260222 - T3 BEARING RETAINER PLATE
#5 T1270850 Bearing Torsional Damper SB
#12 T3801135 T3 BEARING BALL 45 X 75 X 16, Sealed
I have a new old stock Silver painted upgrade kit T3990192 in the shed with the lot that you are welcome to.
Postage is cheap from Oz to USA too.
Fowlers Parts are the largest UK supplier of genuine motorcycle parts & spares for thirteen manufacturers of motorcycles. Offering fast delivery on all orders.
us.fowlersparts.co.uk
The following are also in in the Ouput Shaft Bearing kit:
#5 T1270850 Bearing Torsional Damper SB
#12 T3801135 T3 BEARING BALL 45 X 75 X 16, Sealed
Fowlers Parts are the largest UK supplier of genuine motorcycle parts & spares for thirteen manufacturers of motorcycles. Offering fast delivery on all orders.
us.fowlersparts.co.uk