Evaluation Aluminium Heads for Cracks
Instructions
1. Disinfected the aluminum head.The fixed alternate in temperature causes cracks to die in aluminium heads. Cracking causes the imagination to lose energy, resulting in invisible ability for your vehicle. When performing your own test for cracks, you occasion a funds of testing that does not employment expensive Accoutrement and works with a non-magnetic metal. Performing a dye penetration elimination makes the smallest cracks easily visible without the occasion for expensive Accoutrement or a appropriate testing effortlessness.
Wipe the aluminum head with a clean rag to remove large dirt and accumulated oil. Spray cleaner-remover from a three-part dye penetrant test kit onto a clean rag. Wipe all surfaces of the head with the dampened rag.
2. Shake a can of penetrating dye for 30 seconds. Spray the penetrating dye on all surfaces of the aluminum head. Allow the dye to sit on the head for five minutes.
3. Wipe the dye from the aluminum head with a clean rag. Spray the cleaner-remover directly onto the aluminum head and immediately wipe the head with a clean rag to remove all traces of penetrating dye.
4. Shake a can of developer for 30 seconds. Hold the tip of the spray can 6 inches from the aluminum head. Move the spray can as you spray the developer onto the head. Allow the developer to sit for 30 seconds to one minute.
5. Inspect the head for cracks and pits. Look at each part of the head for lines or spots that match the dye color. A line designates a crack, and a spot designates a pit or other small imperfection on the aluminum head. No lines or spots designate an aluminum head free of defects.
6. Remove the developer from the aluminum head with a clean rag and the cleaner-remover supplied with the three-part dye penetrant test kit.
