28
COMPILER TECO/ATL
REG. CODE
1-5302-296
MODEL N°
50510
DATE OF ISSUE
01.89
REVISION
02
ENDORSED
DATE
17.04.2003
37
38
39
40
41
42
VIII
CYLINDER
Measure diameter sìze between two diametrically opposed points at
three different heights.
For 11 LD535-3 Ø = 88.00÷88.03 mm.
For 11 LD625-3 and 11 LD626-3 Ø = 95.00÷95.03 mm.
In case wear exceeds 0.10 mm, bore the cyIinder and fit oversize
piston and ríngs.
In case of less wear replace piston rings only.
Checks and cyiinder roughness
The cylinder should show no blowholes or porosities.
Seal both ends of cylinder and pressurize with compressed air at 4
Bar for 30 secs. Immerse in water and check for leakage.
Fins must be intact.
Cross hatch pattern must range between 115°÷140°: they must be
uniform and clear in both directions.
Average roughness should range between 0.5 and 1 µm.
PISTON
Remove circlips and remove piston pin.
Remove piston rings and clean grooves.
Measure diameter at 2 mm from the bottom of skirt.
For 11 LD535-3 Ø = 87.90÷87.92 mm
For 11 LD625-3, 11 LD626-3 Ø = 94.90÷94.92 mm
In case of diameter wear above 0.05 mm replace piston and piston
rings.
Note
: Oversize pistons of 0.5 and 1.0 mm are available.
Checking that piston is an original part
When replacing the piston or any other engine component always
check that the original spare part is available.
The logo confirming that the part is an original one is stamped
inside.
DISASSEMBLY/REASSEMBLY