12
308156
Service
Disconnecting the Reciprocator and
Displacement Pump
See Fig. 6.
NOTE: When displacement pump 224914 is
purchased separately, it comes with the priming piston
(112) and priming cylinder (111) unassembled.
Connect the displacement pump to the hydraulic
reciprocator before assembling the priming piston and
cylinder. Torque the priming piston to 35 ft-lb (47 N-m).
Fig. 6
06151B
01682
43
36,37
33
32
46 (hidden from view)
35
202*
203*
101
103
204
3
CAUTION
Keep The Hydraulic System Clean
It is essential to keep the hydraulic oil system clean
and free of contaminants to reduce the risk of dam-
aging the hydraulic reciprocator. Always install a
plug in each tube fitting and on each hose end
whenever fluid lines are disconnected to prevent
contamination.
1.
Flush the pump if possible and stop it with the
displacement rod in the lowest position.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
2.
Relieve the pressure.
3.
Disconnect the outlet hose from the displacement
pump.
4.
Slowly loosen the hydraulic supply (58) and return
(5) fittings to relieve any pressure, and then
remove the hoses. Install plugs on the tube fittings
and in the hose ends. Check the o-rings (5a, 58a)
on the fittings and replace them if they are worn or
damaged. See Fig. 4 and the Parts Drawing.
5.
Using a strap wrench on the displacement cylinder
(108), screw it out of the pump adapter (43), and
slide it down as far is it will go.
6.
Pull the connecting rod (35) down as far as it will
go. Remove the cotter pin (204).
NOTE: For the 35 lb. length pump, the priming
cylinder (111) and the priming piston (112) must be
completely removed before you can pull down the
displacement cylinder (108) far enough to remove the
cotter pin (204).
7.
Unscrew the piston coupling (103) to remove the
pump.
