S1-AM009-L - DDKS Industries, hydraulic components distributor

ASSEMBLY PROCEDURE
Place cylinder barrel 3 on a clean sheet of paper or cloth and insert the three dowels
56 into the holes located outside of the spline hole. Place the holddown ball 14 on top.
Compress manually and ascertain spring 18 force.
BARREL,
PISTON/SHOE/RETAINER
Hold the shoe retainer 15 horizontally with one hand, insert the 9 piston assemblies 5
into the bores of the shoe retainer, in order of disassembly. The shoes should freely
move on the piston.
Support the shoe retainer horizontally and insert the piston assemblies 5 carefully into
the cylinder barrel bores 3.
HOUSING AND ROTATING
GROUP
Place the housing 1 so that the drive shaft 8 is horizontal. Assemble the cylinder barrel
3, piston assembly 5, holddown ball 14 and shoe retainer 15 together onto the drive
shaft.
Do not force the drive shaft spline into the cylinder barrel groove but carefully rotate to
engage, while applying slight thrust. The assembly is correct when the edge of the
cylinder barrel is inserted approximately 1/3 inches below the edge of the housing.
Place the housing with the shaft end pointing downwards on a fixture and coat the face
of the cylinder barrel with clean hydraulic fluid. Place gasket 24 on the housing.
PORT BLOCK ASSEMBLY
Press needle bearing 36 into port block,till bearing bottoms in the bore. Press on the
stamped side of the needle bearing.
Place port block on press with support under adjusting screw pad. Press guide sleeve
23 into port block.
Assemble the plunger 21 and port plate 4 onto the port block 2. Note Figure 7 for correct
location and placement of port plate.
FIGURE 7
port plate installation
FIGURE 7
Lightly coat surface of plate with grease and place the port plate on the port block 2
locating the”U” shaped slot marked R or L over the pin (57, figure 6).
Hold the port block so the plunger 21 does not fall off, and carefully place the block on
the housing.
The clearance between the housing and port block on the contact surface should be
approximately 0.04 to 0.1 in., 1 to 2.5 mm.
Secure the port block 2 with socket head screws 46, tightened diagonally.
22