ASE A1 Engine RepairEngine Block AssemblyEasy
A technician is performing a piston ring installation. Which of the following tools is specifically designed to compress piston rings and guide the piston into the cylinder bore without damage?
- APiston ring expander
- BPiston ring compressor
- CHoning tool
- DRidge reamer
Show answer & explanationAnswer & explanation
Correct answer: B. Piston ring compressor
A piston ring compressor is designed to uniformly compress all piston rings, allowing the piston assembly to be safely guided into the cylinder bore without damaging the rings or cylinder walls.
Why the other options are wrong
- A. A piston ring expander is used to spread rings for removal or installation on the piston, not for compressing them into the bore.
- C. A honing tool is used to create a cross-hatch pattern on the cylinder walls for ring seating.
- D. A ridge reamer is used to remove the wear ridge at the top of the cylinder bore.
Piston Ring Compressor
A specialized tool used to compress piston rings into their grooves, allowing the piston to be safely inserted into the cylinder bore.
- Ensures even compression of all rings.
- Protects rings from damage during installation.
- Prevents cylinder wall scoring.
Memory trick: Compress the rings, then the piston sings.