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RC-TEK Ltd. SJM400 II Reference Manual
5. Control arm assembly: check regularly for cracked, worn, bent or binding control arms and pushrods. Smooth movement of control arms and
linkages is required for stable, vibration flight.
6. Swash-plate: Check for excess slop in the main ball where the main shaft rides on and slop or looseness among all the metal parts. Swash-plate
wear will result in poor stability and lack of control during flight. Replace as necessary.
Fuselage/Chassis:
1. Main shaft bearing: Normal replacement interval for proper operation is between 60-100 flights. If flying 3D or extreme aerobatics often, inspect the
bearing more frequently and shorten the interval as necessary.
2. One-way bearing: One-way bearings have longer lifetimes. Failure is not common. To keep the one-way bearing in good operation, remove it to clean and lubricate
every 50 flights. If the main gear is loose, you should replace the one-way bearing.
Linkage Rods and Connecting Parts:
During assembly, take special care to keep the connecting parts in smooth operation, and avoid excess play or binding. Failure to do so will result in poor
flight stability. The linkage rods and ends will break and wear due to normal usage, crashing and poor maintenance and environment. Check for wear and
proper operation regularly and replace as needed.
Tail Rotor System
1. Tail rotor control set: Check the tail rotor bearing regularly. If there is excess play or gaps replace immediately. Avoid any binding or improper
contact on the tail components and bearings as this will cause excess wear and heat, potentially melting or deforming the tail system.
2. Tail unit assembly: Avoid flying in tall grass or weeds. If grass or weed becomes lodged in the tail rotor unit, it will interfere with the operation and
cause the helicopter to lose control. Always check for foreign objects in the tail and clean them off immediately. Avoid using lubricants on the
exposed surfaces of the model as it will attract and collect dirt and debris and potentially cause hardware failure.
Copyright © 2007 RC-TEK, All Rights Reserved
Summary of Contents for SJM400 II
Page 9: ...9 M2x8 SJ70001 x 2 x 2 Required Parts 2 Tail Blades x2 ...
Page 10: ...10 HS2006 M2x2 x 1 x 2 Required Parts 3 ...
Page 11: ...11 Required Parts 4 M1 6x6 AL2003 SJ2001 x 2 x 2 x 2 ...
Page 12: ...12 Required Parts 5 M1 6x6 AL2036 x 1 x 1 ...
Page 14: ...14 Required Parts 7 Tail Belt M2x5 Boom x 1 x 1 x 1 AL2030 x 1 ...
Page 15: ...15 Required Parts 8 PL2002 AL2014 BRG 2x6x2 5 x 1 x 2 x 1 ...
Page 17: ...17 10 ...
Page 18: ...18 Required Parts 11 bushing FG2004 M2x10 x 1 x 2 x 2 ...
Page 19: ...19 Required Parts 12 M2x5 BRG 2x6x2 5 FG2007 AL2032 x 1 x 1 x 1 x 2 ...
Page 20: ...20 PL1012 Required Parts 13 Carbon rod PL1009 x 1 x 1 x1 ...
Page 21: ...21 AL2016 Required Parts 14 AL2025 M2x5 x3 x 1 x 2 ...
Page 22: ...22 Servo Arm Required Parts 15 M2x5 Servo x 1 x 1 x 2 M1 6x6 x 1 ...
Page 23: ...23 AL2009 Required Parts 16 M2x8 x 2 x 2 ...
Page 25: ...25 Required Parts 18 M2x3 x 1 FG2005 x 2 ...
Page 26: ...26 Required Parts 19 FG2003 x 1 FG2008 x 1 M2x5 x 10 AL2027 x 4 ...
Page 27: ...27 Required Parts 20 AL2015 x 2 Flybar x 1 M2x2 x 2 M1 6x6 x 2 Ball Link x 2 Bushing x 2 ...
Page 28: ...28 Required Parts 21 Flybar Blades x 2 C2001 x 2 AL2031 x 2 PL1010 x 2 M2x2 x8 ...
Page 29: ...29 Required Parts 22 HS2002 x 1 M2x2 x 3 ...
Page 31: ...31 Required Parts 24 M1 6x5 x 2 ...
Page 33: ...33 Required Parts 26 M3x3 grub x 2 FW 03x04 5 x 2 ...
Page 34: ...34 Required Parts 27 AL2010 x 2 AL2023 x 2 AL2011 x 2 BRG 2x6x3 M2x12 M3x7 x 4 x 4 x 2 ...
Page 35: ...35 Required Parts 28 HS1005 x 2 PL1008 x 4 ...
Page 36: ...36 Required Parts 29 Swashplate x 1 M1 6x6 x 7 Ball link x 7 ...
Page 38: ...38 Required Parts 31 M2x4 x 2 ...
Page 40: ...40 Required Parts 33 FG2001 x 1 AL2028 x 4 AL2011 x 1 M2x5 x 12 ...
Page 42: ...42 Required Parts 35 Blades x 2 M2x12 x 2 SJ20007 x 2 ...
Page 43: ...43 36 ...
