Service Manual and
Axial Piston Pumps Series 20
Repair Instructions
L1003506
• Rev BA • Jun 2014
25
Remove the bearing plate and the bearing plate
pilot ring from the cylinder block. Any damaged
bearings or valve plates must be replaced.
Gaskets and O-rings must in any event always be
exchanged.
Protect all exposed sealing surfaces and open
cavities from damage and foreign material.
Next place the bearing plate on the cylinder
block, ensuring that the bearing plate slots lie
beneath the positioning pin of the cylinder block.
In this way the bearing plate will be retained.
Now lubricate the bearing plate with clean oil.
The pump valve plate has two tapered slots
running in opposite directions. The valve plate
illustrated on the left is for left handed (counter
clockwise) operation, and the valve plate
illustrated on the right is for right handed
operation (clockwise).
When reassembling, begin by replacing the
bearing plate pilot ring in the cylin der block.
F000 099
F000 100
16
17
counterclockwise
clockwise
15
15
Changing the valve- and bearing plate (assembly)
17
15
16
F000 102
F000 101
10
12
63
Disassembly and Assembly
Minor repairs
(continued)
