HARBEN CENTURY, Service Manual

Page: 48 / 83

Section 4
Pump Maintenance & Overhaul Procedures
Contents
Section Page
4.1 Routine Maintenance 46
4.1.1 Introduction 46
4.2 Pump Service Information 48
4.2.1 General 48
4.2.2 Recommended Service Tools 48
4.2.3 Torque Settings 49
4.2.4 Service Kits 49
4.3 Pump Overhaul Procedures 50
4.3.1 Introduction 50
4.3.2 Removal and Replacement of Pump Head 50
4.3.3 Removal and Inspection of Delivery Valves - 4 Cylinder Pumps 51
4.3.4 Removal and Inspection of Delivery Valves - 8 Cylinder Pumps 52
4.3.5 Removal and Inspection of Delivery Valves - 4 Cylinder Pumps 53
with Split Delivery Manifold
4.3.6 Removal and Inspection of Inlet Valve Assembly and Diaphragm
54
4.3.7 Separating Crankcase Halves 57
4.3.8 Renewing Crankcase Components 59
4.3.9 Re-Assemble Pump 62
4.3.10 Pump Running In 64
Illustrations
Fig Page
4.1 Mandrel Assembly 55
4.2 Inlet Valve Seat
– Back Up Ring and ‘O’ Ring Fitting
56
4.3 Barrel Code 62
4.4 Century Pump
– Assembly
65/66
4.5 Century Pump
– Parts List
67
4.6a/b Century Pump
– Barrel Assemblies
69/70
4.7 Safety Valve Assembly 71
4.8 Selector Assembly 73
Tables
Table Page
4.1 Pump Maintenance Schedule 46
4.2 Pump Lubrication Chart 47
45