SERVICE MANUAL | 67070 Plunger Pump
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(763) 780-5440 | [email protected] | www.catpumps.com
Servicing the Valves
VALVE INSTALLATION
2.10 Lubricate O-ring and backup ring on valve
seat.
2.11 Hand thread in M12 HSH screw into top of
valve retainer. Place new preassembled valve
assembly into each valve chamber.
2.12 Use a rubber mallet to tap the top of the M12
HSH screw so valve assembly seats properly.
Remove screw.
2.13 Install spring washer onto spring retainer.
2.14 Install coil spring onto spring washer.
2.15 Install and lubricate new O-ring onto each
valve plug.
NOTE: Lubricate O-rings and backup rings on valve seats and valve plugs prior to reassembly.
2.17 Hand thread in 24 M16 x 30 HSH screws.
Use an 14 mm hex bit socket with ratchet
to torque all 24 HSH screws to 1416 in-lbs,
118 ft-lbs or 160 Nm.
2.16 Install valve plug by hand and press into place.