Speed regulator/switch assembly, electrical connectors, and the brushless motor module.
If you are looking for a part for your Hilti SID 4-A22, follow this order: hilti+sid+4+a22+parts+diagram
Knowing the specs helps ensure the replaced parts match the original design: 21.6 V Chuck Type: 1/4" hexagonal click-in No-load RPM: Gear 1: 1000, Gear 2: 1500, Gear 3: 2700 Impact Frequency: Max 3500 bpm Weight: 3.3 lb (1.5 kg) (including battery) 5. Summary Checklist for Maintenance Speed regulator/switch assembly
: The metal prongs that interface with your B22 battery pack. Common Replacement Parts Checklist Gear 2: 1500