14. Maintenance and Care
In order to ensure the operating safety of your model helicopter, regular checks and maintenance must be performed.
At regular intervals, check the tail rotor. In the event of contact with grass or soil, remove any residue completely from the rotor blades. After contact with the ground, check
the tail rotor blades for visible damages.
Oil the sliding collar on the tail rotor shaft at regular intervals. Test for the unobstructed mobility of the tail rotor drive as well as the control unit.
After every day of flying, check the main rotor head. The rubber rings in the rotor head will lose their elasticity with time and must be replaced.
The joint sockets of the linkages may already loosen and come off after a short time in the event of improper mounting. For this reason, check them for a secure seat
before each day of flying.
After coming into contact with the ground, the main rotor shaft and the blade bearing shaft are to be changed in addition to the rotor blades. In this respect, also always
check for the unobstructed mobility of the ball bearings.
The screw connections tend to loosen as a result of vibrations. For this reason, after every day of flying, check the screw connections for a secure seat. Based on experi-
ence, this effect tends to occur with metal screw connections.
Look for undamaged, well-tensioned tooth belts and for adequately adjusted backlash play with the motor/main output pinion. For the control and adjustment of the drive
components, please observe the notes from point a) "Disassembling the Mechanics".
Important!
If you have to replace damaged or worn parts, then only use original spare parts in your helicopter.
You will find the spare part list on our website www.conrad.com in the download area for the respective product.
Alternatively, you can also order the spare part list by phone. You will find the contact data at the start of these operating instructions in the section "Introduc-
tion".
The model and the remote control may only be cleaned on the outside with a soft, dry cloth or brush. Do not in any case use aggressive cleaners or chemical solvents as
the surfaces of the housing could otherwise be damaged.
a) Disassembly of the Mechanics
It may be necessary for maintenance or repairs under certain
circumstances to disassemble the mechanics of the helicopter.
For this, proceed in the following order:
• Remove the screw for the blade steering holder (1), which is
located above the grub screw (2) of the blade holder (Figures
13 and 14).
• Remove the fastening screw from the tail rotor steering lever
(3) and unhook the steering level (Figure 15).
• Loosen the grub screw (2) of the blade holder and take the
freewheel and the blade holder off the shaft.
• Remove all additional fastening screws (4) from the tail rotor
gearbox, lift the tooth belt off the shaft and push the rotor shaft
out of its bearing. The tail rotor has now been disassembled
as shown in the Figure 16.
• Retract the receiver antenna.
• Remove the four screws of the skid landing gear.
• Carefully remove the complete mechanism from the front.
46
Figure 13
Figure 15
Figure 14
Figure 16