Kohler KDI 2504TM Workshop Manual page 104

8
Insert the pipe cleaner into all lubrication ducts B and blow compressed air to free them completely from
any dirt residues.
Check the state of wear and integrity of journals C and connecting rod D.
Perform the operations described in
Points 2, 4, 9 and 10.
Measure the crank pins A1 with a micrometer, and using a dial gauge measure the internal diameter of the
connecting rod half-bearings A2.
Measure the main journals B1, with a micrometer, and using a dial gauge measure the internal diameter of
the crankshaft half-bearings B2.
If the values described in Tab. 8.5 do not correspond, proceed with grinding all gudgeon pins A1 and B1.
Gear A on the crankshaft is timed by a key, assembly of gear A on the shaft occurs after heating at a
stabilized temperature of +180° C for 5 mins.
Fig 8.9
Important
•
The crankshaft and connecting rod must be
replaced every time they are assembled to prevent
seizure, as they are made of special lead-free
material.
•
The MAX allowed value of wear for A1 and A2 is
0.120 mm.
•
The MAX allowed value of wear for B1 and B2 is
0.120 mm.
•
To grind the crankshaft, a decrease in diameter of
the halfbearings and connecting rod is provided
for at 0.25 mm and 0.50 mm, to grind gudgeon
pins A1 and B1, measure the values of diameters
A2 and B2 by assembling the decreased half-
bearings, define the diameter to grind of pins A1
EN 104
INFORMATION ABOUT OVERHAULING
Par. 9.3.1, perform the operations described in Par. 9.3.6
Tab 8.5 Connecting rod and journal
diameter
DIMENSIONS
REF.
(mm)
A 53.981 - 54.000
A1 54.035 - 54.066
B 63.981 - 64.000
B1 64.035 - 64.083
- except
CLEARANCE
VALUE (mm)
0.035 - 0.085
0.035 - 0.102