Overhaul Of The Mechanism - ABB SF6 LTB 245E1 BLG 1002A Product Manual

Overhaul Instructions

7. Overhaul of the mechanism

1HSB435409-201 enrev1
Clean the mechanism housing using a vacuum cleaner and then wipe it. Inspect and
lubricate the bearings and sealing rings.
Protect untreated or manganese phosphated steel parts outside the gas chamber
using Valvoline Tectyl 506, ABB art. No. . 1241 0011-108.
1. The operating shaft (2) is journalled on a large ball-bearing (4) on the outside
of the gas chamber. The bearing is visible for inspection and lubrication when
the operating lever (3) and circlip (5) are dismantled.
2. Pull the operating shaft (2) out of the mechanism housing and remove the ball-
bearing (4) from the shaft.
3. Lubricate the ball-bearing (4)
with grease "G".
4. Remove the bushing (6) that
holds the sealing rings in
position by means of the two
bolts (M5), which are screwed
into the holes at the end of the
bushing. Replace the sealing
rings (7, 8) in the bushing
behind the ball-bearing and
lubricate with grease "S".
5. Check that the ball-bearing (9)
rotates easily.
Item
1 Mechanism housing
2 Operating shaft
3 Operating lever
4 Ball-bearing
5 Circlip
6 Bushing
7 X-ring 69.2x5.7
8 O-ring 89.1x5.7
9 Ball-bearing
1
2
3
B10174
Figure 7-1. Mechanism
Overhaul of the mechanism
Inner mechanism
Outer mechanism
9
6 4
7
8
Bearings and O-rings
2
5
21