How to Free a Stuck Bolt in an Aluminum Water Pump

Loosening stuck bolts and screws is a common problem in older devices, especially if the bolted area is exposed to moisture. Aluminum water pump bolts often freeze in place, making removal a challenge. Although the aluminum does not rust, mineral buildup from hard water can accumulate around the base of the bolt that secures it to the underlying metal base. Removing a stuck bolt requires special lubricating sprays and some force to achieve.

Heat-resistant gloves
Safety glasses
Propane or butane torch
Torch striker
Penetrating oil
Hammer
Wrench or locking pliers
Hacksaw (Optional)

Instructions

- 1
  Put on protective gear, including safety glasses and heat-resistant welding gloves. Turn the gas regulator valve on a butane or propane torch to start the gas flow. Hold the torch in one hand and light the gas with a torch striker tool with the other hand. Regulate the gas valve until the flame is blue instead of yellow or orange.
- 2
  Hold the torch flame over the stuck bolt so that it touches the bolt but not the surrounding aluminum. Keep the torch flame in place for 60 seconds then remove it from the bolt and shut off the gas valve on the torch.
- 3
  Wait until the bolt cools down completely so you can handle it without injury.
- 4
  Open a can of penetrating oil and spray it around the entire base of the bolt. Penetrating oil also comes in a bottle that you can squirt around the bolt.
- 5
  Pick up a hammer and gently tap the side of the stuck bolt at least five or six times.
- 6
  Wait an additional one to two minutes then place a wrench or a pair of locking pliers on top of the bolt. Squeeze the handles tightly and turn the bolt counterclockwise to remove it from the aluminum water pump.

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