Skoda Workshop Service and Repair Manuals > Octavia Mk2 > Drive unit | 1.9/77 kW TDI PD Engine | Engine cooling | Removing and installing parts of the cooling system | Removing and installing coolant regulator (Superb II, Octavia II)

Removing and installing coolant regulator (Superb II, Octavia II)

Special tools and workshop equipment required

t	Catch pan, e.g. -VAS 6208-

t	Pliers for spring strap clamps

Removing

Note

Collect drained coolant in a clean container for proper disposal or reuse.

WARNING

Hot steam or hot coolant may escape when the compensation bottle is opened. Cover the cap with a cloth and open carefully.

–	Drain coolant Superb II → Anchor, Octavia II → Anchor.

For engine with identification characters BJB, BKC, BXE

–	Unscrew fixing screw -arrow- for front air guide pipe.

–	Detach vacuum line -3- at vacuum reservoir.

–	Disconnect plug connection -4- at the charge pressure sender -G31-.

–	Detach coolant hose -6- from the connection and separate from air guide pipe -arrow-.

–	Unscrew screws -2- and -5- and remove air guide pipe, to do so pull retaining clips -1-.

For engine with engine code BLS

–	Detach coolant hose from the connection and separate from air guide pipe.

For all vehicles

–	Screw out screws -arrows- and remove connection fittings.

–	Turn coolant thermostat -2- approx. 90° (¹/₄ turn) anti-clockwise -arrow- and remove from connection fitting.

–	Remove O-ring -1-.

Install

Installation is performed in a similar way in the reverse order. Pay attention to the following points:

Note

Replace O-ring.

–	Clean sealing surface for O-ring, if necessary smoothen.

–	Fit coolant regulator -3- with new O-ring -2- in the connection fittings -1-.

l	When inserting, the coolant regulator clamp must stand horizonally, as shown in the fig.

–	Then turn the coolant regulator 90° (¹/₄ turn) clockwise.

–	Moisten O-ring with coolant.

–	Fit connection fitting onto cylinder block and tighten screws to 15 Nm.

–	Top up with coolant Superb II → Anchor, Octavia II → Anchor.

Skoda Workshop Service and Repair Manuals