Jetta GL L4-1.9L DSL Turbo (ALH) (2001)
Piston: Service and Repair
Note: Support engine with VW 540 support before repairing.
1. Piston ring
^
Offset ring gaps 120°
^
Remove and install using piston ring pliers
^
"TOP" faces towards crown
^
Ring gap, checking see Fig. 1
^
Ring to groove clearance see Fig. 2
2. Piston
^
With combustion chamber
^
Mark installation position and cylinder number see Fig. 4
^
Arrow on piston crown points to pulley end
^
Install using piston ring tool
^
If piston skirt has cracks, replace piston
^
Piston projection at TDC, checking
3. Piston pin
^
If difficult to remove, heat piston to 60°C
^
Remove and install using VW 222A
4. Circlip
5. Connecting rod
^
Only replace as a set
^
Mark cylinder number at -A
^
Installed position: Marking -B- faces pulley end