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Disconnecting Reciprocator and Displacement Pump and Replacing Throat Seals.
See Fig. 5.
7, 6
28
105
103
115
107
118
Fig. 5
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 damaging the hydraulic reciprocator. Always
install a plug in each tube fitting and on each hose
end whenever fluid lines are disconnected to pre-
vent contamination.
Service
During assembly, screw the
connecting rod (45 in Fig. 8)
into the piston rod (116) first.
116
115
110
117
119
1. Flush the pump if possible, and stop it with the
piston rod in the lowest position.
2. Relieve the pressure.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
3. Disconnect the outlet hose from the displacement
pump.
4. Slowly loosen the hydraulic hoses to the supply
(26) and return (25) fittings to relieve any pressure,
and then remove the hoses. Install plugs on the
tube fittings and in the hose ends. Check the o-ring
(13) on the fitting, and replace if worn or damaged.
See Fig. 4 and the Parts Drawing.
5. Using a strap wrench on the pump cylinder (118),
screw it out of the base (115) and remove it.
6. Place the piston (117) in a vise, and loosen the
piston rod (116).
7. Remove bolts (105) and washers (103).
CAUTION
Be careful not to scratch the outside of the piston
rod.
8. Push the piston rod (116) up through the base
(115), and remove it.
9. Remove the throat seal (110). Apply fresh grease
to the new seal and groove. Install the new throat
seal.
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