Rubber steering Coupling. This part is 33mm deep and was fitted to late TR6. We recommend new complete shaft and joints assembly RTR3634-AK (TR4-4A) and RTR3634-BK (TR250,5 and 6) which replaces the dozen or so individual parts in the original assembly.

This part is similar to the original TR4 to early 6 coupling (original part number 130044) which is also 33mm deep but is secured with four special cap bolts 150697 (the couplings are counter-bored to accept these fasteners) which will also need to be ordered to secure the coupling. These special bolts are drilled for locking wire.

Assembly Tip 

The special bolts used to secure the coupling are part number 150697 which are drilled for locking wire. The bolt spacing is 50mm. This coupling, by the very nature of being rubber can have variable hole spacing and is almost always larger than 50mm as it is preferable to have the rubber in compression rather than in tension. To fit, place a 'Jubilee' type hose clip around the outside of the coupling and tighten it until the bolts can be inserted. Remove the clip afterwards of course.

Alternatives 

You can use the earlier TR4-early 6 part 130044 which is similar to the later TR6 coupling but uses four bolts and no cap screws to attach it. As 130044 is invariably not available the closest part is 21H5384 but this is 26mm deep whereas the original part is 33mm deep.

4 x 128323 bolts are needed to fit 21H5384 so these will need to be ordered also.

If you are competition minded, then solid universal joint 145377 can be used instead of the rubber coupling and its adapters with a TR4 shaft (not a TR250, 5 and 6 shaft) but this is pretty pointless as we now strongly recommend new complete shaft and joints assemblies RTR3634-AK andRTR3634-BK which replaces the dozen or so individual parts in the original assembly.

This part appears on the following Triumph Catalogue Plates