Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 668
Installing
– Replace seals.
– Install the cover on the cylinder head the tighten the bolts hand
tight. While doing so make sure that the seal lays correctly on
the cylinder head.
– Tighten the bolts -1 through 6- in the sequence shown. Refer
to
⇒ Fig. ““Timing Chain Guard Upper Cover - Tightening Se‐
.
– Install the Camshaft Adjustment Valve 1 - N205- and Exhaust
Camshaft Adjustment Valve 1 - N318- . Refer to
⇒ “4.4 Camshaft Adjustment Valve 1 N205 and Exhaust Cam‐
shaft Adjustment Valve 1 N318 , Removing and Installing”,
– Install the engine cover. Refer to
⇒ “3.1 Engine Cover, Removing and Installing”, page 38
Tightening Specifications
♦ Refer to
⇒ “2.1 Overview - Timing Chain Cover”, page 104
2.2.2
Lower Timing Chain Cover, Removing
and Installing
Special tools and workshop equipment required
♦ Vibration Damper Assembly Tool - T10531-
Caution
This procedure contains mandatory replaceable parts. Refer
to component overview prior to starting procedure.
Mandatory Replacement Parts
♦ Cover - Lower Timing Chain
♦ Bolts - Lower Timing Chain Cover
♦ O-ring - Oil Dipstick Tube
Note
Dependent on the sealing compound sealant, bends the cover
when removing. Because of this, always replace the cover.
Removing
– Remove right front wheel housing liner. Refer to ⇒ Body Ex‐
terior; Rep. Gr. 66 ; Wheel Housing Liner; Front Wheel Hous‐
ing Liner, Removing and Installing .
– Remove the engine support. Refer to
⇒ “1.6 Engine Support, Removing and Installing”, page 55
.
– Remove the vibration damper. Refer to
⇒ “1.4 Vibration Damper, Removing and Installing”, page 47
– Drain the engine oil. Refer to ⇒ Maintenance ; Booklet 36.1 ;
Procedure Descriptions; Engine Oil, Draining, Replacing Oil
Filter, and Filling .
– Remove the Oil Pressure Regulation Valve - N428- . Refer to
⇒ “4.8 Oil Pressure Regulation Valve N428 , Removing and
– Remove the ribbed belt tensioner. Refer to
⇒ “1.3 Ribbed Belt Tensioner, Removing and Installing”, page
.
– Free up the clip -2- for the electrical wiring harness.
– Remove the screw -1-.
– Unclip the guide tube from the timing chain upper cover in di‐
rection of -arrow-.
– Remove the guide tube from the timing chain guard.
– Remove the bolts -1 through 15-.
Note
There may be only eight bolts installed, depending on the version.
– Pry off the lower timing chain cover.
Installing
Note
♦
Be sure to check the expiration date of the silicone sealant.
♦
Refer to the Parts Catalog for the silicone grease.
♦
The cover must be installed within five minutes after applying
the silicone sealant.
♦
Replace the bolts that were tightened with an additional turn.
♦
Replace sealing ring and O-ring.
♦
Risk of contaminating the lubricating system. Cover open
parts of engine.
– Remove any sealant residue on the cylinder block using a flat
blade scraper.
– Clean any oil or grease off the sealing surfaces.
– Make sure both alignment bushings for centering the cover
-arrows- are present.
– Cut the tube nozzle at the front marking (nozzle diameter: ap‐
proximately 3 mm).
Cover with 15 bolts
– Apply the Silicone Sealant - D 174 003 A2- to the clean sealing
surface -arrow 1- and on the edges -arrows 2- of the new cover
as shown in the illustration.
♦ Sealant bead thickness: 2 to 3 mm.
– Immediately attach the cover and tighten the bolts.
Note
Tighten the bolts -3 and 6- with an additional turn after installing
the vibration damper. The bolts must be removed again to install
the vibration damper.
– Tighten the bolts -1 through 15- in the sequence shown. Refer
⇒ “2.1 Overview - Timing Chain Cover”, page 104
.
Cover with 8 Bolts
– Apply the Silicone Sealant - D 174 003 A2- to the clean sealing
surface -arrow 1- and on the edges -arrows 2- of the new cover
as shown in the illustration.
♦ Sealant bead thickness: 2 to 3 mm.
Note
♦
The cover must be installed within five minutes after applica‐
tion of silicone sealant.
♦
The sealant bead may not be thicker than specified, otherwise
excess sealant could enter the oil pan and clog the oil intake
pipe screen.
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