Boogie Bearing ReplacementUpdated 6 hours ago

Boogies Motor Bearing Replacement Guide

Tools Required

• 4mm Allen key

• High-quality 3mm ball-nose Allen key

• High-quality 2.5mm Allen key

• Flat-bladed screwdriver

• Bearing puller (with M5 threaded screws)

• WD-40 (or equivalent penetrating lubricant)

• Mineral oil - 50ml supplied with kit, but you can add more to help with cooling. 

• Clean towel

Set-Up

1. Flush & Clean:
   Rinse the motor and tail cone area thoroughly with fresh water to remove any sand or grit. Towel dry carefully.

2. Mounting the Boogie:
   Secure the Boogie nose-down on a bench so the propeller faces upward. Use a strap or the tow point to stabilize it firmly.

Step-by-Step Procedure

Step 1: Remove the Tail Cone

• Use the 3mm ball-nose Allen key to remove the tail cone screws.

• Access can be tricky — approach at an angle.

• Once removed, inspect and clean the motor shaft.

Step 2: Remove Rear Cap Screws

• Locate and remove the six 2.5mm cap screws underneath where the tail cone was mounted.

• If screws are seized, apply WD-40 and allow to soak overnight.

• Use high-quality Allen keys to avoid stripping the heads.

Step 3: Prepare the Bearing Puller

• Place the bearing puller over the motor shaft.

• Locate the two M5 threaded holes on the rear motor casing.

Step 4: Separate Rear Housing

• Thread each M5 screw in a few turns alternating sides to evenly separate the rear housing.

• Apply lubricant to the motor shaft if needed — this can help the bearing slide off smoothly.

• Continue until the rear housing is fully removed.

Step 5: Assess the Bearings

• Generally, only the rear bearing needs replacement — it sits closest to the water seal.

• It’s easier to leave the motor shaft in place, still seated in the front bearing.

Step 6: Replace the Bearing and Seal

• Fit the new rear bearing and new seal.

• Use grease when installing the seals and bearing.

• Ensure correct orientation and fit - image below.

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Step 7: Add Mineral Oil

• Fill the motor cavity with mineral oil.

• This improves cooling and extends bearing life.

Step 8: Reassemble

• Slide the bearing and seal assembly back onto the shaft.

• Reinstall the rear housing, cap screws, and tail cone.

• Tighten all screws securely.

• Use blue loctite for the tail cone only.