Hold the core coupling in a vice and unscrew the pendulum, complete with bearing
and oil seal etc, in an anti clockwise direction (right hand thread).
The inner flexible core can now be withdrawn from the outer casing.
Clean the flexible steel inner core an core couplings thoroughly with grease solvent.
Clean ends of outer casing with a cloth.
After thoroughly cleaning the complete flexible drive shaft, inspect the inner core
for any excessive wear due to rubbing action between the core and outer casing
spiral reinforcement; also for damaged and broken outer layer wires. If there is a
permanent bend in the outer casing we advise fitting a replacement, as this is liable
to cause damage to the inner core.
Regrease the first 12” – 18” (30 – 40 cm) of the inner core with Castrol BM2 grease.
Insert the greased inner core into the casing from the plug-in connector end.
Continue greasing the inner core and at the same time insert it into the casing.
Continue until the whole length of the inner core has been greased.
As the inner core is pushed through the outer casing, some of the grease will
naturally adhere to the inner walls of the casing. To ensure adequate lubrication,
it is advisable to draw out the core for approximately 6ft (2m) from the other end,
and regrease as the core is inserted back into the casing.
It is essential during the regreasing operation to keep dirt and grit away from the
component parts.
To re-assemble the flexible drive to the pump head, proceed as follows:
Pull out the inner core for about 4” (10cm) and screw the core coupling (right hand
thread) on to the exposed end of the pendulum, then screw the outer case coupling
into the bearing housing in an anti-clockwise direction (left hand thread). During this
operation, ensure not to damage the fine thread.
Should it be necessary to dismantle the coupling, proceed as follows:
Unscrew main shaft head and remove internal circlip.
