Volkswagen Golf Service & Repair Manual: Assembly overview - pistons and conrods
| Oil threads and contact surface |
| The conrod bearing cap only fits in one position and only on the
appropriate conrod due to the breaking procedure (cracking) separating
the cap from the conrod. |
| Mark allocation to cylinder and conrod in colour
-B-. |
| Installation position: Lug -A- on
conrod bearing cap faces towards pulley end |
| Installation position → Fig. |
| Renew worn bearing shells |
| With industrially cracked conrod bearing cap |
| Mark allocation to cylinder and conrod bearing cap in colour
-B-. |
| Measuring radial clearance
→ Chapter |
| Separate new conrod → Fig.. |
| Installation position: Lug -A- on
conrod bearing cap faces towards pulley end |
| Removing and installing
→ Chapter „Removing and installing pistons“ |
| Mark installation position and cylinder number
→ Fig.. |
| Removing and installing
→ Chapter |
| Checking piston and cylinder bore
→ Chapter |
| Measuring ring gap
→ Fig. |
| Measuring ring-to-groove clearance
→ Fig. |
| Use commercially available piston ring pliers to remove and install. |
| Installation position: marking “TOP” or side with lettering towards
piston crown |
| Measuring ring gap
→ Fig. |
| Measuring ring-to-groove clearance
→ Fig. |
| Use piston ring pliers to remove and install. |
| Installation position: marking “TOP” or side with lettering towards
piston crown |
| Offset gap 120° relative to lower compression ring |
| Installation position and allocation of piston to cylinder |
| Arrow on piston crown points to pulley end
-arrow-. |
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| Bearing shells - installation position |
| – |
Centre bearing shells on conrod and on conrod bearing cap. |
|
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| On new conrods it is possible that the breaking point is not
fully separated. When the conrod bearing cap cannot be removed
by hand, proceed as follows: |
| – |
To avoid damage, gently clamp conrod in a vice with
protection jaws, as shown in illustration. |
| Clamp conrod below dashed line. |
| – |
Unscrew bolts -arrows- around 5
turns. |
|
|
|
| – |
Using a plastic hammer, carefully knock against conrod
bearing cap -arrow- until it is
loose. |
|
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|
Special tools and workshop equipment
required
Drift -VW 222 A-
Piston ring ...
Other materials:
Tyre sizes for vehicles with four-wheel drive
The following points must be observed for vehicles with
four-wheel drive:
Only tyres of the same make, design and tread pattern may be
fitted to the front and rear axles.
Different tyre rolling circumferences ...
Vibration, causes for vibration
Vibration can have a number of different causes. Vibration
can also be caused by tyre wear. Tyre wear caused by driving is
not always evenly spread across the entire running surface of
the tyre. This causes slight imbalances which affect the smooth
runni ...
Air conditioning system compressor with magnetic clutch
The air conditioner compressor is driven by a V-belt from
the engine.
An electromagnetic clutch is fitted to the air conditioner
compressor. When the air conditioning system is switched on, it
transmits the mechanical drive between the V ...
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Removing and installing pistons