Winterthur Gas X40-B, Maintenance Manual

Page: 259 / 495

Maintenance
3326 − 1/A1
Winterthur Gas & Diesel Ltd.
1/ 1
Crosshead
Clearance Checks
Tools:
1 Feeler gauge 94238
1. General
During an overhaul or after the installation of
the crosshead, you must do as follows:
1) Measure and record the clearances
shown in Fig. 1 and Fig. 2 .
2) Compare the clearances with those
given in 0330 − 1 Clearance Table.
2. Clearance Checks
2.1 Guide Shoe and Guide Way
1) Make sure that the related crosshead
pin (4) is in a position so that the guide
shoes (1) and (5) touch the guide ways
(3) (on the fuel side or exhaust side).
2) Measure the clearance (C) between the
guide shoe (1) and the guide way (3).
Note: The clearance (C) is applicable for
the full length of the guide way (3)
and measured at the position
shown in Fig. 2 .
2.2 Crosshead
1) Measure the lateral clearance (D) at
each position of the crosshead as
follows:
a) Use an applicable hardwood wedge
(or an item that is almost the same)
to push the crosshead axially to one
side. Make sure that you apply the
pressure only to the guide shoe.
2.3 Guide Shoe and Top End
Bearing
1) Measure the full lateral clearance (A)
between the top end bearing (2) and the
the guide shoes (1, 5).
2.4 Radial Clearance
1) Measure the radial clearance (B)
between the guide shoe (5) and the
crosshead pin (4) at all positions of the
crosshead.
2016
Fig. 1
Fig. 2
90
°
BEFORE OR
AFTER TDC
30
°
BEFORE OR
AFTER TDC
30
°
AFTER OR
BEFORE BDC
WCH02706
FUEL SIDE
EXHAUST SIDE
1
2
4
3
5
A
B
D C
C