Engine Subassembly - THUNDER TIGER RAPTOR Assembly Manual

5-1
No. Material No. Description
1 5-1-1

Engine Subassembly

2 HMC4-18B M4x18 Socket Screw
3 BN1639 Muffler
Insert the engine into the sideframes,
then add the muffler.
Add a drop of Loctite on the threads of
the M4x42 muffler bolts.
5-1-1 Engine Subassembly
No. Material No. Description
1 ***** Heli Engine .60~.70
2 HMC4-8B M4x8 Socket Screw
3 ***** Nut ( Comes with Heli Engine)
4 HMO10 d9.5xD16x1 Washer
5 BV0380 Cooling Fan
6 BV0381 Clutch
The aluminum cooling fan hub is threaded. Place the washer that came with
your engine onto the engine crankshaft first. Then screw the fan hub onto the
engine. Add a tiny drop of Loctite on the engine nut. Do not use to much
otherwise the nut will be impossible to remove later on. Tighten the engine nut
using a socket head wrench while grabbing the plastic fan with a towel. The
nut should be tighten securely, but do not over torque it because you may
damage the plastic fan, or the plastic fan may come apart from the aluminum
fan hub. For 50-size or bigger engines, we do not recommend using a piston
locking tool on the glow plug hole because that may damage the engine. Attach
the No. 6 Steel Clutch, to the fan hub.
Add a drop of Loctite on the threads of the M4x8 bolts. The threads on the
aluminum cooling fan hub are for the TT70H or the OS 61 SX and OS 61 LX
engines. If YS 61 ST II engines are used, then the fan hub must b re-tapped
by the modeler or purchase optional fan hub with threads for the YS engine.
Installation of Engine
Qty No. Material No. Description
1 4
4 5
1
(4) (5)
(2)
Qty
1
2
1
1
1
1
30
HMC4-42B M4x42 Muffler Bolt
HMT4B SPRING WASHER
(1)
(4)
BAG J
Qty
2
2
(3)
(2)
(6)
(3)
(5)
(1)