Overview - Piston And Connecting Rod: Notes
- Connecting Rod Bolt
- 30 Nm +90°
- Tighten to 30 Nm to measure radial play but do not tighten further.
- Replace after removing
- Lubricate the thread and contact surface.
- Relief Valve
- 27 Nm
- Opening pressure: 1.3 to 1.6 bar (18.85 to 23.2 psi) pressure
- Oil Spray Jet
- For piston cooling
- Connecting Rod Bearing Cap
- Note the installation position
- Due to the separation procedure (cracking) of the connecting rod, the cap only fits in one position and only to the corresponding connecting rod.
- Mark which cylinder to which it belongs -B-.
- Installed position: markings -A- face the pulley side
- Bearing Shell
- Note the installation position. Refer to Bearing Shells Installed Positions .
- Do not interchange used bearing shells.
- Axial play
New: 0.10 to 0.35 mm wear limit: 0.4 mm
- Measure radial clearance with Plastigauge®:
New: 0.01 to 0.06 mm wear limit: 0, 09 mm Do not turn crankshaft when checking radial clearance
- Connecting Rod
- With cracked bearing cap
- Separate new connecting rod. Refer to NEW CONNECTING ROD, SEPARATING
- Always replace as a set.
- Mark which cylinder to which it belongs -B-.
- Installed position: markings -A- face the pulley side
- Circlip
- Piston Pin
- If difficult to move, heat piston to 60 °C (140 °F)
- Remove and install using the Pilot Drift:VW222A
- Piston
- Checking. Refer to Checking Piston .
- Mark installed position and cylinder allocation
- Arrow on piston face points toward belt pulley side
- Install with mounting strap piston ring
- Cylinder bore, checking. Refer to Checking Cylinder Bores .
- Piston and cylinder dimensions. Refer to PISTONS AND CYLINDER BORE, CHECKING - Piston and Cylinder Dimensions .
- Piston Rings
- Offset gaps by 120°
- Use piston ring pliers for removing and installing
- Markings face toward piston crown
- Checking the ring gap. Refer to Checking The Piston Ring Gap .
- Checking the piston ring groove clearance. Refer to Checking The Piston Ring Groove Clearance .