12
Parker Hannifin
Pump and Motor Division
Trollhättan, Sweden
Service Manual
Series F11
Bulletin HY30-5503-M1/UK
2. Install a new tab washer and tighten the lock nut gradu-
ally until the spacer ring between the bearing cups is held
firmly but not tight; you should be able to push the spacer
sideways with your thumbs as shown. Secure the nut with
one of the tabs of the washer.
12. Turn the shaft by hand to assure correct assembly. A
"clicking" noise generated when the shaft is rapidly turned
back and forth reveals that there is backlash between the
ring gear and the cylinder barrel. A "no noise" condition indi-
cates no backlash, and a thicker shim has to be installed.
The correct backlash should be .05 to .20 mm.
Reassembly, Series F11-250
1. If the shaft/bearing assembly has been taken apart,
start the reassembly by installing the ring gear over the
locating dowel pin. Press the cone of the large roller
bearing against the ring gear. Install the large bearing cup,
the spacer ring (note the position of the cut-outs), and the
small bearing cup. Press the small bearing cone onto the
shaft, but only so far that the spacer ring can still be moved
sideways easily.
Note
If the lock nut has been tightened too much as to allow the
spacer to be moved sideways, the bearings have to be
removed from the shaft and the assembly procedure started
over again.
3. Install a new shaft seal and push the shaft assembly into
the bearing housing. Install the pistons in the ball sockets.
4. If a new cylinder barrel is used, install the groove pins
that locate the bearing plate, the internal retaining ring, and
the needle bearings (refer to page 14). Install the barrel
post/bearing assembly in the cylinder barrel. Locate each
piston into the corresponding, previously marked cylinder
bore, and position the cylinder barrel assembly on the ring
gear as shown so that the timing marks are lined up.
5. Install the barrel housing and check through the drain
port that the timing is correct. Cross-torque the cap screws
according to specifications (page 3
).
6. Install new o-rings on the end cap; one o-ring is located
in the barrel post bore. Screw tool (without nut and bearing)
into the barrel post, and install the end cap over the tool
spindle against the block housing. Install the split shim as
shown, making sure it is located correctly in the barrel hous-
ing recess.
7. Install the nut/bearing of the tool on the spindle, and , by
tightening on the nut,pull the barrel post partly into the end
cap. Install the three cap screws and tighten according to
specification (page 3).
