Bramley Model 026E Electric/Hydraulic Pipe Bender
Hydraulic Fault #1
Check there is oil in the reservoir.
If there is oil in the reservoir and the unit is not
pumping, it may have been stored standing up
which can result in the unit losing its prime.
Re-prime the unit.
Hydraulic Fault #2
If the ram still fails to extend, or if the ram extends
without load but fails to extend under load (bending
pipe) all or part of the hydraulic unit will need to be
dismantled.
Remove the 2x nuts holding the gearbox/motor unit
and separate from the hydraulic unit.
Figure 1: 2x M8 nuts retaining the motor / gearbox
unit.
Undo the ller plug and drain the oil from the
hydraulic unit by tipping unit upside down.
You will see the primary cylinder/piston assembly
under the gearbox you have just removed.
The primary piston in these units reciprocates at
very high speeds with a relatively short stroke.
The primary piston pulls a fresh charge of oil from
the reservoir and pushes it out against the main
ram (when the control valve is closed).
This primary seal operates under high demand.
Wear to this seal may result in the unit losing
its prime, performing in a sluggish manner or in
extreme cases failing to operate.
Figure 2: The primary cylinder assembly tted.
Unscrew this primary cylinder assembly. Remove the
piston and inspect the seal, replace as necessary.
• Replacement seal is part of Complete Seal Kit –
part number 26-30
Under the cylinder piston assembly is a spring, lter
plate and steel ball.
Check the lter plate is at, they can deform over
time with heavy use. If the lter plate is deformed
it can be reformed simply by placing between two
pieces of steel and hammering. Note: it does not
require a lot of force to reform.
Remove the steel ball and check there is no debris
around the ball seating area.
Ret the ball and re-seat. Use a pin punch and
lightly tap the ball onto the seat.
Ret the lter plate and spring.
Check O-ring on outside of primary cylinder (replace
if necessary) and ret primary cylinder piston
assembly.
• Replacement O-ring is part of Complete Seal Kit –
part number 26-30
To re-prime the hydraulic unit.
1. Ensure the unit is horizontal.
2. Open the control valve half to one full turn.
(No more than one turn).
3. Using a small G-clamp (or similar) slowly pull
the main ram out 150mm approx.
4. Allow the ram to fully retract on its own. This
will ll a charge of oil under the primary piston
5. Close control valve and test.
