Triumph Thunderbird Service Manual page 158

Engine Removal and Refit
Removal
Before starting work, ensure the motorcycle is stabilised
and adequately supported. This will help prevent it from
falling and causing injury to the operator or damage to
the motorcycle.
To gain access to the engine for removal:
1. Raise and securely support the motorcycle and
engine.
2. Remove the rider's seat (see page 17-8>.
3. Disconnect the battery, negative (black) lead first.
4. Remove the left and right side panels (see page
17-9).
5.
Drain the engine oil (see page 8-7).
6. Remove the fuel tank (see page 10-86>.
Z Remove the throttle body (see page 10-103).
8. Remove the exhaust system (see page 10-118).
9. Drain the cooling system (see page 11-6).
10. Remove the radiator (see page 11-10>.
11. Release the hose clips securing the upper
coolant tube to the thermostat housing hose, top
hose and radiator cap housing hose.
12. Ease the upper coolant tube upwards at the rear to
release it from the thermostat housing hose.
13. Release the coolant tube from the radiator top
hose and then the radiator cap housing hose.
14. Remove the upper coolant tube upwards through
the frame rails.
15.
Remove both MAP sensors, noting the routing of the
MAP sensor hoses and harnesses (see page 10-100>.
16. Remove the bolt securing the throttle cable and
harness guide to the frame.
1. Throttle cable and harness guide
2. Fixing
17. Disconnect the MAP sensor hoses at the throttle
body.
18. Detach both switch cube connectors from the
throttle cable and harness guide, and remove the
guide ensuring the two MAP sensor hoses
remain clipped into the underside.
19. Disconnect the electrical connectors and remove
the four ignition coils from the camshaft cover.
20. If fitted detach the secondary air injection hoses
from the reed valves on top of the camshaft
cover. Position the hoses aside.
21. Noting their respective positions, disconnect the
spark plug leads from the spark plug coils.
22. Release the two fixings and detach the horn bracket
from the frame. Disconnect the horn and bracket
and position aside.
1. Horn bracket
2. Fixings
23. Detach the final drive belt front pulley (see page
15-8>. It is not necessary to completely remove the
drive belt from the motorcycle.
24. Disconnect the clutch cable (see page 4-4).
9.2 SelVice Manual - Thunderbird