Triumph Thunderbird Service Manual page 40

Full Specification
Piston/Crankshaft <Continued)
Thunderbird
Connecting Rod Small End Dia.
24.016 - 24.029 mm (std)
24.039 mm (service limit)
Connecting Rod Big End Dia
55.500 - 55.018 mm (std)
Connecting Rod Big End Side Clearance 0.15 - 0.30 mm (std)
0.50 mm (service limit>
Crankshaft Big End Journal Dia.
52.476 - 52.490 mm (std)
52.452 mm (service limit>
Crankshaft Big End Bearing Clearance 0.035 - 0.066 mm (std)
0.100 mm (service limit)
Crankshaft Main Journal Dia. 52.483
52.499 mm (std)
52.459 mm (service limit)
Crankshaft Main Bearing Clearance 0.021 - 0.045 mm (std)
0.10 mm (service limit>
Crankshaft End Float 0.05 - 0.20 mm (std)
0.40 mm (service limit>
Crankshaft Run-out 0.02 mm (std)
0.05 mm (service limit>
Transmission
Type 6 Speed Constant Mesh
Gear Ratios Primary 1.440: 1 (85/59)
1st
2.875: 1 (46/16)
2nd
1.958: 1 (47/24)
3rd 1.536: 1 (43/28>
4th
1.219: 1 (39/32)
5th
1.029: 1 (35/34)
6th
0.909: 1 (30/33)
Gear Selector Fork Thickness
4.35 - 4.45 mm (std)
4.25 mm (service limit>
Gear Selector Groove Width
4.50 - 4.60 mm (std)
4.75 (service limit>
Gear Selector Fork to Groove Clearance
0.05 - 0.25 mm (std)
0.50 (service limit>
Final Drive
Final Drive Type Toothed belt
Final Drive Ratio 2.214: 1 (62/28>
Toothed Belt Slack See Chapter 15
1.32
Service Manuai - Thunderbird