Milwaukee 3670-20 M18 4-1/2-6" Braking Grinder, Rapid Brake For Parts Or Repair
The flip
- As-is
- $70
- Working value
- $221
- Margin
- +$151
Working value is the median price of active working-condition listings for this item. Estimate, not sold data.
carrillopowertools
17,066 sales
Risk signals
None flagged on this listing.
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What the seller says
The power lock is stuck and broken. Missing washer component. Unit wants to run but lock mechanism is non-functional.
Likely faults & repair cost
The stated fault does not map to a single common repair part, so treat this as a parts or board-level unit and confirm the real cost before buying. The common failure points for this kind of item are below for reference. Subtract the relevant one from the $151 margin to gauge the real spread.
Common faults for this model
- Dead battery pack$25 to $60eBayAmazon
- Charger / charging (battery or charger)$20 to $60eBayAmazon
- Trigger / switch (won't power on)$10 to $25eBayAmazon
- Chuck$15 to $35eBayAmazon
- Blade clamp / holder$10 to $30eBayAmazon
- Hammer / clutch mechanism$20 to $60eBayAmazon
- Nail jam / driver blade (misfires)$15 to $50eBayAmazon
- Spindle lock / button$8 to $25eBayAmazon
- Shaft / housing$15 to $50eBayAmazon
- Motor brushes$8 to $20eBayAmazon
- Motor / armature$30 to $60eBayAmazon
Repair costs are rough parts estimates, not a diagnosis of this exact unit. Confirm the fault and your repair path before you buy.