Instalation manuals can be downloaded from here:

This kit replaces the original motor with a high quality coreless motor offering improved low speed control. Can be fitted to the following models using the X8438 (X803) 3-Pole Ringfield motor.

• Class 37

• Class 47

• Class 4P,

• Class 4P Compound
  

• Class 5
• Class 52
• Class 6P PatriotClass 7MT Morning Star
• Class 8F
• Class 8P Coronation Class 8P Princess Royal
• Standard Class 9F
• Class 92
• Class A3
• Class A4
• Class B17/4
• Class D49 Shire/Hunt Class
• GWR 2800
• GWR 2900
• GWR 3800 County Class
• GWR 6000
• Schools Class
• Other non-B0-B0 locos

This kit can be used for the following catalogue numbers:

R033, R037, R042, R050, R053, R057, R059, R060, R060, R065, R066, R068, R070, R072, R073, R074, R075, R075, R077, R078, R078, R080, R082, R084, R098, R099, R101, R116, R123, R125, R129, R132, R133, R134, R138, R141, R143, R144, R146, R175, R188, R190, R194, R196, R204, R208, R219, R221, R243, R245, R257, R259, R262, R264, R284, R285, R286, R286, R286, R287, R288, R289, R292, R292, R294, R295, R297, R298, R303, R303, R304, R305, R308, R309, R311, R312, R314, R315, R315, R316, R317, R318, R319, R319, R320, R322, R324, R324, R325, R325, R325, R327, R327, R328, R328, R329, R330, R341, R342, R347, R347, R348, R348, R349, R350, R352, R353, R354, R355, R357, R359, R365, R368, R369, R372, R372, R373, R374, R375, R375, R376, R376, R376, R378, R378, R380, R380, R386, R390, R392, R393, R398, R402, R404, R416, R416, R459, R532, R533, R558, R577, R578, R583, R584, R587, R648, R649, R650, R682, R683, R684, R685, R717, R737, R751, R752, R767, R769, R802, R817, R825, R826, R830, R832, R834, R840, R842, R845W, R855, R858, R859, R860, R864,