The original parts books do not reflect the current TR2-5 owner's needs or indeed the way parts are available for purchase. The following may be helpful. We have alternative gearwheels available listed below. These allow for different sweeps of the wiper blades. Each gearwheel is stamped with its degrees of sweep, you will therefore be able to easily identify the one you have fitted should you choose to change it. See the list below of gear wheels available
Wiper motor fitments are as follows: -
TR2 Motor part No. 501684. TSI TS996 single speed CRT type. Wiper spacing 10"
TR2 TR3 Motor part No. 501684. TS997 TS12567 CRT type. Wiper spacing 12"
TR3 TR4 Motor part No. 505124. TS12568 CT7783 (RHD) and CT30 (LHD) DR2 type. Wiper spacing 14 ¾"
TR4 Motor part No. 510985. From CT7784 (RHD) & CT31 (LHD). DR3A type. Single speed
TR4A 5 Motor part No. 514821. Two speed DR3A type. Also optional equipment TR3 from TS12568 onwards.

The following kits have proved immensely popular with drivers who like to see where they are going. The kits include a 14W round bodied wiper motor which is much stronger than the original TR2-5 items, wheel boxes, tubes, a mounting bracket and full instructions. Two speeds are provided, self-park and the ability to fit an intermittent operation kit. 

RTR8395-AK  Kit of parts to fit 14W type wipers to TR2-3B
RTR8395-BK  Kit of parts to fit 14W type wiper system to TR4-4A
RTR8395-CK  Kit of parts to fit 14W type wiper system to TR5, 250