Retightening Standard and Setback Bar Lock Nuts

1. IMPORTANT: Lock nuts must be retightened after first 50 hours of operation.

   
   N62203-UN-01MAY03

   Shear Bolt Standard

   
   N59979-UN-26APR02

   Cushion Trip Standard

   
   N62204-UN-01MAY03

   Setback Bar

   A - Lock Nuts, 7/8 in. (4 Used)

   B - Lock Nuts, 7/8 in. (4 Used)

   Retighten 7/8 in. lock nuts (A) gradually, alternating from front to rear, until nuts are tightened to specification.

   Retighten 7/8 in. lock nuts (B) gradually, alternating from top to bottom, until nuts are tightened to specification.

   Item	Measurement	Specification
   Lock Nuts	Torque	407 N˙m (300 lb-ft)

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2. Repeat process on other standards and setback bars.