FLENDER B3 A Series - Backstop; Figure 3-7 Backstop

For reliable operation, Tacolab seals require a stationary, horizontal installation position without
any contact with dirty water ‐ or high dust levels. Over󹪝lling the gear unit can result in leaks, the
same applies to oil with a high foam content.
NOTICE
Gear unit leaks caused by poor sealing
Gear unit leaks caused by poor sealing are possible.
Regrease the labyrinth seals at the speci󹪝ed regreasing intervals. The regreasing intervals are
speci󹪝ed in the Maintenance schedule (Page 101).
Further information
Check in the spare parts drawing and the spare parts list as to whether the gear unit is equipped
with Tacolab seals.
3.7 Backstop
Introduction
For some requirements, the gear unit can be equipped with a mechanical backstop. In
operation, the backstop only permits the speci󹪝ed direction of rotation. The direction of rotation
is speci󹪝ed at the gear unit input ‐ and ‐ output using an arrow.
The backstop is mounted to the gear unit through an intermediate 󹪞ange creating an oil tight
seal; the backstop is integrated in the gear unit oil circuit.
Description
3.7 Backstop
Assembly and operating instructions A5051en
30 Edition 06/2020