Last updated by Ron G. on 09/09/2026

DJI Agras T100 Motor Maintenance Procedure

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Drones For Hire (DFH) is well versed at shipping items fast - we understand the need for a rental drone is often urgent. We ship via multiple partners (TGE Priority, Aus Post Express and even Qantas freight when needed).

Before each rental we do a flight test, battery test, firmware update check. We also use fleet checklists to make sure nothing its left out of the order such as a controller (RC) battery (wb37).

Billy, our hire fleet manager, is very experienced and has the context to help you. He has all kinds of drones and relevant credentials: a CASA RePL 25kg, Commercial Pilot License (CPL); Single- and Multi-Engine, Multi IF, Night, RNAV, CRM, SEPT, DG - SACAA.

Billy can be reached on:

[email protected]

1300 029 829

0490233192



Cause of the Issue

Operating the aircraft in rainy conditions or rinsing it directly with water may allow water and chemical residue to accumulate inside the bottom of the motor. Over time, this can cause the motor bearings to corrode and become loose, resulting in increased clearance between the rotor and stator and affecting normal motor operation.

Preventive Maintenance

To minimize the risk of water ingress and bearing corrosion, avoid spraying or rinsing the aircraft directly with water. After each operation, inspect the motors for any accumulated water and remove it promptly using a clean, dry cloth.

Motor Maintenance Procedure

1. Disassemble the Motor

  • Remove the lower motor.
  • Remove the three (3) screws securing the motor bottom cover and the two (2) screws securing the three-phase wire, then remove the bottom cover.


2. Clean the Sealing Areas

  • Use a cotton swab dampened with isopropyl alcohol to thoroughly clean the flat surfaces around all six (6) sealing holes. Ensure the surfaces are free of oil, dust, and other contaminants to achieve proper adhesion.

Important: Do not use water for cleaning.


3. Seal the Holes

  • Apply Kafuter K-5911B silicone sealant to seal all six (6) holes.
  • Use a cotton swab stick or a small wooden stick to spread the sealant evenly over each hole.

Important: Apply only a moderate amount of sealant. Excess sealant may flow into the motor assembly and interfere with normal motor operation.


4. Inspection and Curing

  • Verify that all six holes are completely sealed with no exposed openings.
  • Allow the sealant to cure for at least 10 minutes before reassembly.
  • Lightly touch the sealed area with a clean cotton swab. If no sealant transfers to the swab, the sealant has cured sufficiently and the motor can be reassembled.




Drones For Hire videos
35-min video: T50 Full Spraying Demo
2-min video: Customer scouting stock yards, feral pigs and even mustering.
T30 demo, T40 demo, and T50 demo
8-min video: summary of the T50s flight modes available on controller screen
2-min video: see the high flow rate and penetration a DJI T50 can deliver
Video the T50 holding its droplets in a controlled vortex bubble over a rice plantation
Go to all our YouTube videos (demos, how-to videos, Shorts)
Spray drone related links
Get fast local quotes for contractor spraying or mapping work here
View dry-hire drone rental fleet and prices
DFH Batch Master chemical mixing stations
DFH aluminium enclosures for spray drones (2-min video)
Industry related links
CASA article: Drones taking agriculture sky high
AAUS: the leading association for uncrewed systems (drones, ROVs, robots) in Aus.
DJI Agriculture main site
Blackberry control action groups: Weeds Australia, VIC , NSW
Cotton Australia main site
Chemical application licence authorities
NSW EPA (https://www.epa.nsw.gov.au/)
VIC EPA (https://www.epa.vic.gov.au)
QLD DESI (https://www.detsi.qld.gov.au)
SA EPA (https://www.epa.sa.gov.au/)
WA EPA (https://www.epa.wa.gov.au/)
NT EPA (https://ntepa.nt.gov.au/)
TAS EPA (https://epa.tas.gov.au/)



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Disclaimer: The information provided in this article is for general informational purposes only and does not constitute professional or legal advice. While efforts have been made to ensure the accuracy and relevance of the content, readers should consult with qualified experts or local authorities before making decisions related to agricultural drone use, regulations, or investments.


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