|
Piston with Con-rod, Remove and Install
 Remove
Remove oil pan – see operation "Oil Pan, Remove and
Install".
In version with balancer shaft unit: remove balancer shaft unit
- see operation "Removing and installing balancer shaft unit".
Remove cylinder head – see operation "Cylinder Head,
Remove and Install".
|
Caution
Mark order of con-rod bearing caps (1) – bead (2) of
con-rod bearing caps points to transmission side.
The mating surfaces of the con-rods and con-rod bearing caps
form an individual fit and as a result must not be damaged or
swapped under any circumstances. In order to avoid damage, do not
lay con-rods and con-rod bearing caps on the mating surfaces.
|
|
Remove
Remove con-rod bearing cap from con-rod.
Remove combustion residue from the upper part of the cylinder
bore. Press piston with con-rod upwards out of cylinder bore.
Inspect
Clean and check all parts, replace if necessary.
Replace piston – see operation "Piston, Replace".
|
Caution
Note positions of piston rings –
the gap of each piston ring must be offset by 120°.
- Rectangular compression ring or double trapezoidal ring (first
compression ring)
- Tapered compression ring (second compression ring)
- Outer bevel ring (oil scraper ring)
Install
Coat piston rings with engine oil and compress with piston
compressor.
Note installation position – arrow on piston head points
towards engine timing side and bead (1) on con-rod faces flywheel
side.
Push piston into cylinder bore with hammer shaft.
|
|
|
Note order of con-rod bearing caps (1) – note marks.
Install con-rod bearing caps with new bolts on con-rod –
con-rod bearing cap bead (2) points to transmission side.
Torque-angle method
Con-rod bearing caps with new bolts to con-rod – 35 Nm /
26 lbf. ft. + 45° + 15°.
Install
Install cylinder head – see operation "Cylinder Head,
Remove and Install".
In version with balancer shaft unit: install balancer shaft unit
- see operation "Removing and installing balancer shaft unit".
Install oil pan – see operation "Oil Pan, Remove and
Install".
|
|
|
