GE Kelman DGA 900 Plus Installation & Commissioning Manual page 45

Figure 9-8: Bushing Adaptor with initial threads covered in grease
As the bushing adaptor is installed into the tapping point of the bushing, the grease will
work its way down ensuring an even coating across all threads as shown in Figure 9-9.
Figure 9-9: Bushing Adaptor with all threads covered in grease
9.4.2.5 Screw the complete Bushing Adaptor into the tapping point of the bushing.
First just hand-tighten to prevent thread damage.
9.4.2.6 Tighten the Bushing Adaptor to the required torque defined in the installation
drawing (46-XXXX) provided with each Bushing Adaptor. It is important to
tighten the Bushing Adaptor in steps of no greater than 20 N m (15 lb ft) until
you reach the final torque requirement to minimise mechanical stress.
Note: A suitable torque wrench is specified in Table A-2: GE FSE-supplied items.
9.4.2.7 Finally, check that the resistance between the Bushing Adaptor body and the
bushing tapping point remains less than 5 Ω.
9.4.2.8 Remove the Bushing Adaptor top cover.
Note: Suitable tools are specified in Table A-2: GE FSE-supplied items.
9.4.2.9 Install a liquid-tight fitting (as listed in Table A-3: Customer-supplied items) into
the Bushing Adaptor top cover. Use a sealing gasket to ensure a liquid tight
seal.
Note: The Bushing Adaptor thread for the liquid-tight fitting is ½ in. NPSM as
illustrated in Figure 9-10.
MA-041 – DGA 900 Plus - Installation & Commissioning Manual - Rev 1.1 4-Mar-22 Page 45 of 99