Disassembly And Assembly Of Subassemblies: Piston: Assembly
WARNING: This page is about a different car, the 2018 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
- For assembly purposes the bump on the connecting rod will face the same way as the bump on the connecting rod cap.
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- For assembly purposes the bowl on the dome of the piston should be facing toward the intake of the engine.
- On the RH bank the bump on the connecting rod and cap should face the front of the engine.
- On the LH bank the bump on the connecting rod and cap should face the rear of the engine.
- Position the piston on the connecting rod.
- Lubricate and install the piston pin.
Material: Motorcraft® SAE 5W-30 Synthetic Blend Motor Oil / XO-5W30-QSP (WSS-M2C946-A)
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NOTE: The piston pin retainer gap orientation must be toward the top of the piston.
Install the piston pin retainers.
- Lubricate and install the oil control rings.
- Upper oil control ring.
- Oil control expander ring.
- Lower oil control ring.
Material: Motorcraft® SAE 5W-30 Synthetic Blend Motor Oil / XO-5W30-QSP (WSS-M2C946-A)
- Lubricate and install the lower compression ring.
- The lettering on the ring should point up toward the top of the piston.
- The hook feature will point down toward the bottom of piston.
Material: Motorcraft® SAE 5W-30 Synthetic Blend Motor Oil / XO-5W30-QSP (WSS-M2C946-A)
- Lubricate and install the upper compression ring.
- The lettering on the ring should point up toward the top of the piston.
Material: Motorcraft® SAE 5W-30 Synthetic Blend Motor Oil / XO-5W30-QSP (WSS-M2C946-A)
- The lettering on the ring should point up toward the top of the piston.
- Position the piston ring gaps.
- Center line of the piston parallel to the wrist pin bore.
- Oil control expander ring gap.
- Upper compression ring gap.
- Lower oil control ring gap.
- Lower compression ring gap.
- Upper oil control ring gap.