Winterthur Gas X40-B, Maintenance Manual

Page: 291 / 495

Maintenance
3403 − 3/A1
Winterthur Gas & Diesel Ltd.
3/ 3
9) Torque symmetrically the eight bolts (6,
Fig. 3 ) as follows:
a) Torque the eight bolts to 5.0 Nm.
b) Use a felt pen to make a mark on
each bolt head and the piston
skirt (4).
c) Subsequently tighten symmetrically
the eight bolts to an angle of 50
_
.
Note: When you do step 10 ), make sure
that the elastic studs (9) align with
the holes in the piston rod.
10) Attach the assembled piston crown and
oil distributor to the piston rod as follows:
a) Apply oil to the threads and
surfaces that touch of the eight
collar nuts (3).
b) Attach the eight collar nuts (3) to the
elastic studs (9).
c) In the sequence shown in Fig. 4 ,
Torque symmetrically the eight
collar nuts to 30 Nm.
d) Use a felt pen to make a mark on
each collar nut and the piston rod.
e) Subsequently, tighten
symmetrically the eight collar nuts
to 105
_
.
4. Completion
1) Install the piston, refer to 3403 − 1,
paragraph 3 , paragraph 4 and
paragraph 5 .
2) Make sure that all tools and equipment
are removed from the work area.
2016
Piston: Disassemble and Assemble
Fig. 4
a
b
c
d a
b c
d