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Darlington post-race penalties

NASCAR released the Post-Event Penalty Report for Darlington Raceway:

Monster Energy NASCAR Cup Series

Infraction Date: 9/3/2017 (post-race inspection)
Team: #11-Hamlin
Violation: L1 Section 20.14.2 Rear Suspension I-4 f Truck Trailing Arm Spacers/Pinion Angle Shims. Spacers/pinion angle shims must conform to the following drawing: A-008-01016d-16 REV. A. Notes: 6 The Truck trailing arm spacer / pinion angle shim mating surfaces must be planar and must be in complete contact with corresponding mating surfaces at all points and at all times.
Race finish is encumbered per Section 12.10 Encumbered Race Finishes.
Penalty: Crew chief (Mike Wheeler) has been fined $50,000 and suspended from two Monster Energy NASCAR Cup Series Championship Points Events. Team has been assessed with the loss of 25 owner points and 25 driver points.

Infraction Date: 9/3/2017 (post-race inspection)
Team: #88-Earnhardt, Jr.
Violation: Safety Sections 10.9.10.4: Tires and Wheels Note: Lug nut(s) not properly installed.
Penalty:Crew chief (Greg Ives) has been fined $20,000 and suspended from the next Monster Energy NASCAR Cup Series Championship points event.

NASCAR XFINITY Series

Infraction Date: 9/2/2017 (post-race inspection)
Team: #18 Joe Gibbs Racing
Violation: L1 Sections 20.14.2 Rear Suspension I-4 Truck Trailing Arm Spacers/Pinion Angle Shims;
h. Spacers/pinion angle shims must have single planar mating surfaces. Notes: All mating surfaces between the truck; trailing arm and the U-bolt saddle must be in complete contact with each other.
Race finish is encumbered per Section 12.10 Encumbered Race Finishes.
Penalty: Crew chief (Eric Phillips) has been fined $25,000 and suspended from two NASCAR XFINITY Series Championship Points Events. Team has been assessed with the loss of 25 owner points.

Infraction Date: 9/2/2017 (post-race inspection)
Team: #22 Team Penske
Violation: L1 Sections 20.14.2 Rear Suspension I-4 Truck Trailing Arm Spacers/Pinion Angle Shims;
h. Spacers/pinion angle shims must have single planar mating surfaces. Notes: All mating surfaces between the truck; trailing arm and the U-bolt saddle must be in complete contact with each other.
Race finish is encumbered per Section 12.10 Encumbered Race Finishes.
Penalty: Crew chief (Greg Irwin) has been fined $25,000 and suspended from two NASCAR XFINITY Series Championship Points Events. Team has been assessed with the loss of 25 owner points.

See the Darlington Post-Event Penalty Report (pdf) for complete details.

--- NASCAR ---

UPDATE: Hendrick Motorsports will not appeal the penalty announced today by NASCAR stemming from a post-race lug nut infraction Sunday at Darlington Raceway.

Travis Mack, 34, will serve as interim crew chief for the No. 88 NASCAR Cup Series team with driver Dale Earnhardt Jr. during this weekend's event at Richmond Raceway. The Louisville, Kentucky, native has been the team's car chief since 2015, serving under crew chief Greg Ives.

"We have a tremendous amount of confidence in Travis and everyone on the team," said Jeff Andrews, vice president of competition at Hendrick Motorsports. "Our people have done a great job all year with the lug nut rule. We won't dwell on it (the penalty) and will look forward to having Greg back on the box next week at Chicagoland."

After joining Hendrick Motorsports in 2004, Mack worked as a mechanic for the Nos. 24 and 88 Cup Series teams. In 2013, he moved to Hendrick Motorsports affiliate JR Motorsports, where he served as car chief for drivers Regan Smith and Chase Elliott in the NASCAR Xfinity Series. Mack earned an Xfinity Series championship in 2014 as a member of Elliott's team.

--- Hendrick Motorsports ---

UPDATE: Joe Gibbs Racing will not appeal the penalties to Hamlin's teams. Chris Gabehart, the crew chief for Gibb's #20 XFINITY team, will serve as Hamlin's interim crew chief.