Volkswagen Workshop Service and Repair Manuals

Checking compressions

Notes:

• ◆ When installing an exchange cylinder head, all the contact surfaces between the support elements, roller rocker fingers and the cams must be oiled before installing the camshaft housing.
• ◆ The plastic packing pieces for protecting the open valves must not be removed until immediately before fitting cylinder head.
• ◆ If the cylinder head is replaced, all the coolant in the system must also be renewed.

• Toothed belt guard - upper part
• Main drive toothed belt
• ◆ Check for wear
• ◆ Do not kink
• ◆ Removing, installingand tensioning
  => Page 13-14
• Coupling drive toothed belt
• ◆ Check for wear
• ◆ Do not kink
• ◆ Removing, installing and tensioning
  => Page 13-14
• 10 Nm + 1/4 turn (90 °) further
• ◆ Renew
• ◆ Tighten from centre outwards
• H.T. cable guide

• Camshaft housing
• ◆ Removing and installing
  => Page 15-6
• ◆ Remove remnants of old sealant
• ◆ Carefully clean sealing surfaces. They must be free of oil and grease.
• ◆ Coat with AMV 188 003 before fitting
• ◆ When installing fit vertically from above onto studs and dowel pins
• 10 Nm
• Fitted pins
• Roller rocker finger
• ◆ Check bearing for ease of movement
• ◆ Oil contact surface
• ◆ Use securing clip to clip onto support element when installing

• Support element
• ◆ Do not interchange
• ◆ With hydraulic valve clearance compensation
• ◆ Oil contact surface
• Cylinder head bolt
• ◆ Renew
• ◆ Note installation instructions and sequence when loosening and tightening
  => Page 15-11
• Cylinder head gasket
• ◆ Renew
• ◆ Metal gasket
• ◆ After replacing renew the complete coolant

• Cylinder head
• ◆ Removing and installing
  => Page 15-11
• ◆ Check for distortion => Fig. 1
• ◆ Sealing surfaces in contact with camshaft housing must be free of oil and grease
• ◆ After replacing renew the complete coolant
• Coupling drive tensioning roller
• ◆ Checking => Page 13-26
• ◆ Tensioning toothed belts
  => Page 13-14
• 20 Nm
• Rear toothed belt guard
• Lifting eye

→ Fig. 1     Checking cylinder head for distortion

Max. permissible distortion: 0.05 mm