4.4 Checking the wear parts
If there are any steel wear particles, caused by plastic, which is worn of, then scrap the pump!
Port plate and thrust plate:
There must be no wear on whether port plate or thrust plate. This can be
checked by laying a (hair) ruler upon the surface controlling the tightening
land against the light.
Pistons:
Play in ball- and -socket joint must not exceed 0.1 mm.
Thickness of slippers collar must not be below 4,4 mm.
The surface of the slippers must be plane and smooth (can be checked by
hair ruler). If pistons are with wear layer (black colour), partial wear of this is
acceptable.
Cylinder barrel:
The outer bearing surface must be without any bigger wear grooves
(not critical).
There must be no seizures and bigger scratches in the bushings, - and
ensure that the pistons move freely in them!
Housing with swash plate and bearing:
The surface on the swash plate must be smooth without any bigger
scratches. More than 0.1 mm wear in depth will reject the pump.
The bearing must be without any bigger wear grooves (not critical).
>4.4mm
