20
307132
Service
Displacement Pump Service
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 10.
Thoroughly flush the pump with a solvent which is
compatible to the fluid being pumped, then relieve the
pressure.
Disassembly
(See Fig. 6)
1.
Disconnect the fluid riser hoses from the fluid
pump’s outlets.
2.
Unscrew the unions (9) (three displacement pump
models) from the intakes of the displacement
pumps and remove the manifold (20).
3.
Remove the two locknuts (6) from the two outer
pumps’ displacement rods (E). Screw the fluid
pump retaining rings (15) off the fluid pumps (use
a screwdriver and hammer to loosen).
4.
Pull the two outer pumps (25) down out of the re-
taining plate (12). Remove the washers (14) from
the displacement rods (E).
5.
Three Displacement Pump Models Only
Using a wrench on the flats of the center pump’s
displacement rod (E), screw the rod out of the
yoke (13). See Fig. 5. Then remove the center
pump (24) and remove the washer (44) from its
displacement rod.
6.
See instruction manual 307944 for servicing the
displacement pump.
Fig. 6
05231
9
5
E
24
25
12
15
14
13
20
3
6
Reference
Only
Summary of Contents for BULLDOG HYDRA-CAT 208958
Page 17: ...307132 17 Notes...
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