CONTENTS
Section
Page
I.
Introduction
1
II. Preparation
1
2.1 Maintenance records
1
2.2 Inspection
1
2.3 Drawings
2
2.4 Lifting devices and rigging
3
2.5 Scheduling
4
2.6 Hydraulic transient study
4
2.7 Procurement of equipment and supplies
5
III. Disassembly
8
3.1 Preshutdown and preteardown readings
8
3.2 Labeling and match marking
10
3.3 Disassembly
10
IV. Inspection and repair of unit components
13
4.1 Bearings
13
4.2 Turbine runner
14
4.3 Wicket gates
14
4.4 Facing plates and wicket gate bushings
15
4.5 Packing box and shaft sleeve
17
4.6 Servomotors
17
4.7 Cooling coils and generator air coolers
18
4.8 Exciter
18
4.9 Generator structure
18
4.10 Generator brakes
18
V. Field machining procedures
19
5.1 Seal rings
19
5.2 Facing plates
20
5.3 Wicket gate bushing line boring
20
5.4 Redoweling
21
5.5 Coupling boltholes
22
VI. Reassembly
23
6.1 Torque or stretch of bolts
23
6.2 Unit alignment
24
6.3 Wicket gate adjustment
25
6.4 Gaskets and packing
25
6.5 Governor
26
VII. Startup
27
7.1 Final inspection
27
7.2 Initial startup
28
7.3 Operational readings
28
CMMS Fleet Maintenance Software for Fleet, Vehicle, & Equipment Maintenance
This Information is Reprinted From UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF RECLAMATION
