Maintenance5552−2/A1 RT-flex50-D
Wärtsilä Switzerland Ltd
8/ 11
6. Application of torque amplifier
Torque amplifier 20 must be used for tightening the waisted screws 7 to bearing
covers 9.
The following figures ’N’ to ’X’ are drawn for 7 & 8 Cyl. engines, however, there are
also shown all applications for 5 & 6 Cyl. engines.
6.1 Procedure
⇒ Fasten limiter 94566c with screws 16 (of cover 3) to housing 10 below the 1
st
fuel pump.
⇒ Fit torque amplifier 20 with backing rod 23 or 24, together with screw driver bit
21 onto waisted screw 7 to be tightened.
Remark: Place the torque amplifier in such a manner that the corresponding back-
ing rod 23 or 24 lies on limiter 94666c.
⇒ Taking the transmission ratio of torque amplifier 20 into consideration, the
torque wrench 22 is to be adjusted as follows:
The required tightening value of waisted screws 7 is 1450 Nm, therefore the
torque wrench must be adjusted to 290 Nm according to transmission
factor 1:5.
⇒ Place the torque wrench onto the amplifier.
N
9
7
21
16
94566c
23
20
22
013.067/05
1
2010
upply Unit: Removal and Fitting of Camshaft and Bearing Shells
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