Fuel pump as condensate pump - experiences

[dampfspieler]

Hi,

the work is done, all parts are finished.

As is so often the case, mechanical engineering begins with the construction of fixtures and fittings to enable the necessary work to be carried out. Here are the mounting pins for the lever. This allows the lever's radii to be milled very conveniently using a rotary table.

The mounting pins for milling the lever

STUART_MembPu076klk.jpg (112.42 KiB) Viewed 206 times

The drive lever is fixed to the axle using an M3 threaded stud. The bearing bushings in the diaphragm rod are IGUS sleeve bearings.

the individual parts of the drive

STUART_MembPu073kl.jpg (137.82 KiB) Viewed 206 times

The lower part of the pump with the individual parts of the drive

STUART_MembPu075kl.jpg (109.6 KiB) Viewed 206 times

-----
Dietrich

[dampfspieler]

Hi,

the bearings of the lever axle were fitted with PTFE-coated bushings, as the original axle pressed into the housing was replaced with one with a diameter of 6 mm due to its 1/4" diameter, which is now firmly clamped in the lever.

STUART_MembPu041kl.jpg (64.83 KiB) Viewed 185 times

----
Dietrich

[dampfspieler]

Hi,

the assembled and well tested pump. It has 7 mm stroke but i will reduce it to 6 mm, so is a clearance in the dead centres of 0,5 mm. The lever is in upper dead center position (delivery stroke).

the assembled pump

STUART_MembPu084kl.jpg (89.79 KiB) Viewed 37 times

-----
Dietrich