Lombardini CHD series - Crankshaft End Play and Thrust Bearings; Thrust bearing, oversizes; Crankshaft end play

- 44 - Workshop Manual LDW CHD _ cod. 1.5302.345 - 6° ed_rev. 05
C B A
dradnatS
29.72÷77.72 50.82÷00.82
82.0÷80.0
21.82÷79.72 52.82÷02.82
22.82÷70.82 53.82÷03.82
23.82÷71.82 54.82÷04.82
(g.81)
(g.82)
77
81
79
78
80
82
4
1st Oversize
2nd Oversize
3rd Oversize
Thrust bearing, oversizes
Grinding B according to the above table, following half-rings can
be assembled:
1
st
Oversize:
Half-rings 1 and 2, on both the support sides +0.10 mm.
2
nd
Oversize:
Half-rings 1 and 2, on one support side +0.10 mm and on the
other side +0.20 mm.
3
rd
Oversize:
Half-rings 1 and 2, on both the support sides +0.20 mm.
A
82.0÷80.0
B
50.82÷00.82
Crankshaft end play
After tightening main bearings measure the end play A between
the crankshaft shoulder on the ywheel side and main bearing
halves.
If the end play does not fall within the given values check B and
possiblyttheoversizethrustbearings.
Grease the shoulder half-rings so that they will remain in their
seats during assembly.
Halves should be tted with grooves A as shown in the gure
77-78.
Thrust bearing thickness = 2.31÷2.36 mm; oversize halves with
thickness increased by 0.1 and 0.2 mm are available as spares.
Clearance
(mm)
Ref.
Disassembly / Reassembly