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Step-by-Step: MX-11 Front & Rear Crank Seal R&R with the ATC1903058

By Blog Admin

How to Replace MX-11 Crank Seals Without Destroying $400 Seals
Full Photo Guide Using the ATC1903058 (1903058 Replacement)

ATC1903058 being used on MX-11 rear crank seal

Complete Step-by-Step (Front & Rear)

Front Seal Removal & Install

  1. Remove harmonic balancer
  2. Install puller cup + bridge
  3. Tighten forcing screw → old seal pops out clean
  4. Lightly oil new 1923376 seal
  5. Use installer driver → seats perfectly flush
Front crank seal installation with ATC1903058
Rear crank seal installation with ATC1903058

Rear Seal Removal & Install

  1. Remove flywheel
  2. Bolt bridge to crank → extract old seal
  3. Install new 1923380 seal with wear sleeve
  4. Use rear driver → no rolled PTFE lip

Critical: Rear driver prevents the #1 cause of immediate leaks

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