WÄRTSILÄ RT-flex50-D, Maintenance Manual

Page: 57 / 522

Maintenance
0352−1/A1
RT-flex50-D
Wärtsilä Switzerland Ltd
1/ 16
Group Description Thread Tightening values Lubricant
1
[bar]
2
[Nm]
3
[
_ (
; mm]
1
1112−1
Foundation bolt
(metal and synthetic chocks)
1
M48 1500
1
st
step 900 bar
2
nd
step 1500 bar
MOLYKOTE G
1132−1
Main bearing, nut for waisted stud 2
M42 1
st
step 1000 Nm
2
nd
step 1500 Nm
1
st
step to 2
nd
step
(20
_
)
Oil
1715−1
Engine stay (friction type)
3
M48 310 MOLYKOTE G
1903−1
Tie rod
(see instructions in 1903−1)
4
M72x6 1500 MOLYKOTE G
2
2106 *
*
Cylinder jacket bolting-up / bolt
Cylinder jacket bolting-up / fitted bolt
5
5
M36
M36
Elongation 0.50
±
0.04 mm
Oil
Elongation 0.30
±
0.04 mm
Oil
2138−1
Lubricating quill (Pulse Jet), screw
(see instructions in 2138−1)
6
M10x50 10 Oil
2708−2
Cylinder cover, nut for waisted stud
7
M56 1500 (255
_
) Oil
2722−1
Injection valve, screwed connection
with cylinder cover
(see instructions in 2722−1)
8
M12
Equally tighten Allen
screws until spring guides
are flush with spring cages
Never-Seez
NSBT-8
Injection valve, retaining nut, nozzle
body − nozzle holder 9
M60x2 1
st
step 100 Nm
1
st
step to 2
nd
step
30
_
Never-Seez
NSBT-8
(see instructions in 2722−1 with OBEL test
bench) (loosen retaining nut after initial
assembly and then repeat tight-
ening procedure)
2728−1
Starting valve spindle, nut
(spindle thread not to be lubricated in region
of locking ring)
10
M20 140 MOLYKOTE G
Starting valve, screw
11
M20x150 1
st
step 80 Nm
1
st
step to 2
nd
step
90
_
Never-Seez
NSBT-8
2745−1
Indicator valve, screw
12
M20 80 Never-Seez
NSBT-8
1 When using other hydraulic jacks, required pressure in bar must be calculated in relation to effective jack piston surface!
Conversion factor: 1 Nm = 0.102 mkp
1 bar = 1.02 kp/cm
2
2 Tightening torque
3 Tightening angle or elongation
− Numbers in
f
refer to illustrations on pages 7 to 16.
− Values in parentheses (...) are for information only, to be used for comparison.
− Screwed connections must be tightened in accordance with values not in parentheses.
Respective lubricant has to be applied to threads and seating surfaces, if no other instructions are mentioned.
− Bostik Findley Inc. (USA) is manufacturer of Never-Seez NSBT-8.
* Tightening procedure not mentioned in this Manual.
50−D / 2011-12
Tightening Values of Important Screwed Connections