Wartsila RT-flex50-D - Checking the Clearances

Maintenance3326−1/A1 RT-flex50-D
Wärtsilä Switzerland Ltd
2/ 3
2. Checking the clearances
Clearance Clearance between guide shoe and guide way:
The corresponding crankpin must stand in such a positio
n
that guide shoes 2 lie on guide ways 4 on fuel or exhau
st
side.
Clearance is valid for the whole guide way length and
is
measured according to the positions as shown in Fig. ’B
’.
Clearance Lateral clearance of crosshead between the column
s:
The clearance is measured in every position of the cros
s-
head. The complete crosshead must be pressed axially
to
a side with suitable hardwood wedges or similar aids. Th
e
pressure must be exerted onto the guide shoe and no
t
onto the crosshead pin 1.
Clearances Lateral clearance between guide shoe and
top end bearing:
Lateral clearance (between holding plate and groove
in
crosshead pin) is measured in the above mentioned pos
i-
tion of the crosshead.
Measure total lateral clearance between top end
bearing 5 and guide shoes 2 at the same time.
Clearance Radial clearance between guide shoe and
crosshead pin:
The clearance is measured in every position of the cros
s-
head.
1
2
3
4
5
1
3
4
B
1
013.784/06
90° BEFORE OR
AFTER T.D.C.
Checking the Clearances and Fitting the Guide Shoes
2010