SFN-20230807A_Fan Hub Preventative Maintenance Recommendation - FEDEX

TICO Document: SFN-20230807A

Complication: Potential for production bolts to loosen during operation.

Units Affected: Units with part number 60423 in BOM.

Cause: Loosening of fan drive bolts.

Solution: Install preventive maintenance kit 970122

Parts Required: 970122

Planned Labor: 2.3 Hours

Customer Contact: Please use the attached Excel file for contacting your local FEDEX supervisor to arrange for time to perform the Preventive Maintenance Kit 970122.

All communication in EDGE should include FEDEX: local supervisor and Jacob Hanson

FEDEX Contact Excel Sheet

create a service case for operation - 14.19 Clutch Cooling Fan R&R

Work Instructions:

1. Remove upper half of fan shroud and tip back towards engine to gain access to fan blade nuts

2. Loosen all 4 (17mm) fan blade nuts

3. Remove fan blade

4. Once the fan blade is removed, slide the fan shroud back forward, but do not tighten it as you need to move again to reassemble

5. Disconnect the fan clutch harness and remove the bolt from the strap.

6. Loose four fan clutch mounting bolts (15mm) with an open-ended wrench

7. Once the bolts are loose, you may back off the a/c belt if applicable and remove the serpentine belt.

8. Remove the fan clutch bolts.

9. Remove fan clutch

10. Clean if needed, use kit 970122 (4 bolts 80373), and apply Loctite 242(80080) to each of the bolts

11. Torque Bolts to TES-106 Spec - 50FT-LBS

12. Reverse the procedure for assembly

Machine Index Affected:

751925