6
Parker Hannifin
Pump and Motor Division
Trollhättan, Sweden
Service Manual
Series F11
Bulletin HY30-5503-M1/UK
Shaft Seal Replacement
Note
The unit does not have to be taken apart.
Remove the retaining ring and the back-up washer (units
designated F11C and F11D might not have a back-up
washer). Without damaging the shaft, punch through the
casing of the seal with a screwdriver and remove the seal.
Check the shaft sealing surface for corrosion and other
damage.
The tool shown in the figure can be used to facilitate the instal-
lation of the new seal. Be careful not to cut the seal on the
shaft key or spline. The chamfer of the back-up washer should
face the seal when installed (concerns N-seal).
Disassembly, Series F11-5 through
-150
Before taking the unit apart, remove the shaft coupling (if
applicable) and thoroughly clean the outside of the unit; seal
the ports with suitable plugs or covers.
1. Remove the four metric cap screws. By utilizing two
screwdrivers, pull the housings apart as shown. Retain
the split shim located between the spacer ring and the
barrel housing.
2. Mark the pistons and the corresponding ball sockets
with a felt-tipped pen.
3. Remove the pistons by pulling them out when in line
with the shaft as shown.
Series Dia. "D"
(mm)
F11- 5 35
10 35
19 52
28 62
39 65
58 65
78 72
110 72
Dia."D"
3 mm
Chamfer
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