FMC Ao4 User Manual

Doc No: OMM50001254
Rev: A Page 1 of 47
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, d
isclosed, or made public in any manner prior to express written authorization by FMC.
OPERATION AND MAINTENANCE MANUAL, A04 / I04 PUMP
ASSEMBLIES
Rev ECN No. Date Reviewed By Approved By Status
A 5021211 23-APR-2009 Taylor, Justin Singleterry, Ronald RELEASED
Summary:
This is a manual for FMC A04 and I04 duplex piston pumps. These pumps are direct
drive (no pinion shaft) and have a stroke length of 1.00”. The continuous power rating is
2.6 hp (1.9 kilowatts). Refer to part number 5266228 for printing information.
OMM50001254

FMC Ao4 Specifications

General

Brand	FMC
Model	Ao4
Category	Water Pump
Language	English

Summary

Important Safety Instructions

General Safety Precautions

Essential safety measures for operating and servicing high-pressure equipment, including shutdown, pressure bleed-off, and guards.

A04/104 Pump Features

Installation Guidelines

General Location and Mounting

Suction Piping Recommendations

Discharge Piping Recommendations

How to Start a Pump

Pre-Start Checks and Procedures

Essential checks before starting the pump for the first time or after shutdown, including fluid and oil levels.

Lubrication of Power End

Recommended Lubricants

General lubrication requirements and suggested lubricants for FMC pumps based on service and temperature.

Oil Change Procedures

Recommended intervals and procedures for changing pump oil to maintain performance.

Inspection and Preventative Maintenance

Maintenance Schedule and Tasks

Detailed chart outlining maintenance tasks and intervals for pump components like crankcase oil and strainers.

Service Procedures

General Service Precautions

Important safety warnings and procedures before starting any service work on the pump.

Replacing Cup Pistons

Step-by-step guide for removing and replacing pump piston cups.

Replacing Suction and Discharge Valves

Step-by-step instructions for replacing pump suction and discharge valves.

Servicing the Power End

Procedures for disassembling and servicing the pump's power end components.

Fastener Torque Requirements

Torque Specifications for Fasteners

Critical Clearances

Power End Component Clearances

Trouble-Shooting Pumps

Troubleshooting Guide by Symptom

Chart to diagnose and resolve common pump operational problems based on symptoms.