Ford Focus Quiz
Powertrain

Piston - Engine - 2.0L

In this manual: Powertrain
Vehicle - General — 4Accessories — 40Body — 237Chassis — 113Electrical — 19HVAC — 44Powertrain — 292
10steps
~60min
3/5difficulty
Done 0 of 10
Material
Item Specification
Motorcraft® SAE 5W-20 Premium Synthetic Blend Motor Oil (US); Motorcraft® SAE 5W-20 Super Premium Motor Oil (Canada) XO-5W20-QSP (US); CXO-5W20-LSP12 (Canada) WSS-M2C945-A


Item Part Number Description
1 6150 Piston compression upper ring
2 6152 Piston compression lower ring
3 6159 Piston oil control upper segment ring
4 6161 Piston oil control spacer
5 6159 Piston oil control lower segment ring
6 6140 Piston pin retainer
7 6140 Piston pin retainer
8 6135 Piston pin
9 6200 Connecting rod
10 6110 Piston

Disassembly
  1. Remove the piston rings from the piston.
    • Discard the piston rings.
  2. Remove the 2 piston pin retainers and the piston pin.
  3. NOTE: If the piston and connecting rod are to be reinstalled, they must be assembled in the same orientation. Mark the piston orientation to the connecting rod for reassembly.

    Separate the piston from the connecting rod.

  4. Clean and inspect the piston and connecting rod. For additional information, refer to Section 303-00.
Assembly
  1. NOTE: The arrow on the top of the piston points towards the front of the engine.

    Align the piston-to-connecting rod orientation marks, and position the connecting rod in the piston.

  2. Lubricate the piston pin and pin bore with clean engine oil.
  3. Install the piston pin in the piston and connecting rod assembly.
  4. Install the piston pin retaining clips in the piston.
  5. Lubricate the piston and the new piston rings with clean engine oil.
  6. NOTE: The piston compression upper and lower ring should be installed with the paint mark on the outside diameter circumference of the ring to be positioned on the right side of the ring gap. The lower compression ring needs to be installed with the undercut side downward. NOTE:

    The upper and lower compression ring gaps are not controlled for installation.

    Install the piston rings onto the piston as shown.
    1. Piston pin
    1. Upper oil control ring gap location
    1. Lower oil control ring gap location
    1. Center line of the piston pin bore and the expander gap

Test yourself

A quick Ford Focus quiz: every answer comes with an explanation and a link to the manual page.