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TROUbLEShOOTING GUIDE
This Troubleshooting Guide has been provided to help you diagnose and solve most problems that you may encounter with your XTM
Racing Rail Brushless Off-Road Buggy chassis components, brushless motor, and brushless Electronic Speed Controller. If you cannot
solve a problem using this Troubleshooting Guide, please contact your regional distributor, using the Customer Service Information on page 3.
For troubleshooting information related to the radio control system included with you Rail, please refer to the separate radio
control system Operating Manual.
Rail pulls to one side
Rail does not 'go'
Suspension not smooth or free
Shock(s) leak oil
Spur gear strips out
Screws loosen or fall out during use
Steering sensitivity is 'sluggish'
When pulling throttle trigger, Rail
goes into reverse
Rail won't go into reverse
ESC does not turn 'ON'
Braking seems ineffective
ESC not achieving full power
A) Steering trim out of adjustment
B) Toe angle out of adjustment
C) One wheel is hanging or has damaged bearing
A) Stripped or damaged spur gear
B) Stripped or damaged pinion gear
C) Pinion gear loose and slipping
D) Differential output pinion joint(s) loose and slipping
E) Dogbone(s) broken
F) Throttle control range not calibrated
G) Differential(s) damaged
A) One or more shocks sticking
B) Bent shock shaft(s)
C) Bent or otherwise damaged hinge pin(s)
D) Hinge pin retaining nuts too tight
A) Shock seals worn
B) Bent shock shaft(s)
C) Bottom shock cap not tight
A) Gear mesh set too loose
B) Damaged pinion gear
A) Vibration under normal use
A) Servo saver spring too loose
A) Transmitter throttle channel reversing incorrect
B) Motor wires swapped
A) ESC programmed for forward only operation
B) Incorrect throttle use
A) Batteries not connected properly
A) ESC Braking Percentage not adequately set
A) Throttle control range not calibrated
B) Throttle channel EPA out of adjustment
A) Readjust trim to centre both wheels
B) Readjust toe angle (Page 14)
C) Remove wheel and clean or replace bearing
A) Replace spur gear
B) Replace pinion gear
C) Tighten pinion gear grub screw. Use threadlock
D) Tighten differential output pinion joint grub screw(s)
E) Replace damaged dogbone(s)
F) Calibrate throttle control range (Page 11)
G) Rebuild affected differential(s)
A) Clean and/or rebuild affected shock(s)
B) Replace damaged shock shaft(s)
C) Replace damaged hinged pin(s)
D) Loosen hinge pin retaining nuts to ensure free movement
A) Replace shock seals
B) Replace damaged shock shaft(s)
C) Tighten bottom shock cap securely
A) Replace spur gear and readjust gear mesh (Page 19)
B) Replace both pinion gear and spur gear
A) Clean screws with rubbing alcohol, then reinstall using
threadlock
A) Tighten servo saver spring (Page 17)
A) Set throttle channel reverse setting to 'REV'
B) Swap two of the three motor wires (Page 7)
A) Change ESC Running Mode, using ESC programming
card (Page 12/13)
B) Push throttle trigger forward to stop your model,
release throttle trigger, then push throttle trigger
forward again to go into reverse (Page 11)
A)
Connect batteries, observing correct polarity (Page 9/10)
A) Increase Braking Percentage, using ESC programming
card (Page 12/13)
A) Calibrate throttle control range (Page 11)
B) Adjust throttle channel EPA to 100%
PROBLEM CAUSE SOLUTION
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