POWER SERVICE - APComPower, Inc.

POWER SERVICE

1 

Alstom Power Inc. (Alstom) is 

recognized around the world as a leader in 

the design, manufacturing and servicing of 

power generation equipment. While our 

heritage dates to the late 1800’s, our 

capabilities continue to expand and 

point us to the future. 

At Alstom, we combine 

our capabilities and 

experience to enhance 

the productivity and 

performance of your 

boilers, pulverizers, air 

pollution control systems, 

ash handling systems and 

auxiliary equipment. 

We are an organization that 

focuses on customer service and 

understands the challenges faced 

by plant owners, operators, 

maintenance personnel and 

management. Whether it is a simple 

replacement part, a rebuilt assembly, 

a custom fabrication or inventory 

management program, Alstom provides 

value and service to the customer.

Table of Contents 

Intro to the MPS-type Mill ..................................................................................................................3 

Alstom Rotating Throats ......................................................................................................................4 

Alstom Advanced Static Classifiers ......................................................................................................6 

Mill Upgrades for Powder River Basin Coal ........................................................................................7 

Roll Wheel............................................................................................................................................9 

Yoke and Yoke Air Seal Repairs ..........................................................................................................10 

Gearbox Overhauls ............................................................................................................................11 

Ceramic Lining and Vacuum Bonded Liners ......................................................................................12 

Gear Drive Rebuilds............................................................................................................................13 

Yoke and Yoke Air Seal Replacement Parts ........................................................................................14 

Plow Assemblies and Replacement Parts ..........................................................................................15 

Ring Seat Assembly............................................................................................................................16 

Roll Wheel Assembly Replacement Parts ..........................................................................................17 

Tire Options ........................................................................................................................................19 

Roll Wheel Wear Brackets ................................................................................................................20 

Asset Planning and Life Cycle Worksheet ..........................................................................................24 

Seal Air Assembly ..............................................................................................................................25 

Spring Frame, Pressure Frame and Loading Assembly......................................................................27 

Louver and Classifier Assembly ..........................................................................................................29 

Turret and Discharge Valve Assembly ................................................................................................31 

Contact Information..............................................................................................................Back Cover 

2

3 

Intro to the MPS-type Mill 

The MPS-type mill was originally designed 

by Pfeiffer AG of Germany. Babcock & 

Wilcox (B&W) bought a license to build the 

MPS-type mill in 1971. The first 

commercial operation in the USA was 

in 1973. B&W needed a fast 

replacement to resolve problems 

with the CR 77 mill. That license 

has since expired. 

There are several sizes of 

MPS-type mills. The most 

common is the MPS 89. 

This mill was supplied in 

a number of versions, K, 

N, NR and G. 

Alstom supplies 

all the replacement 

parts, wear parts and 

major casting for all 

the MPS 89 models. 

Model Table Dia Table Speed Tire Dia 

(in) (rpm) (in) 

K 89 23.7 65 

N 89 23.7 65 

NR 89 23.7 65 

G 89 21.5 70

Alstom Rotating Throats 

The original MPS-type mills had fixed air 

ports around the mill table. The primary air 

flowing through these ports dried and 

transported the coal. The air port design 

had several disadvantages. The pressure 

drop was high, wear rates were high and 

they were not adjustable. 

Alstom first developed and patented the 

Rotating Throat also know as the 

Vane Wheel design. The first 

Vane Wheel was designed for 

a Combustion Engineering 

pulverizer in 1975. After 

testing, tuning and 

patent approval, the 

Vane Wheel 

became standard 

for all 

Combustion 

Engineering type 

pulverizers. 

Competitors saw 

the advantages 

of Alstom’s 

design and copied 

the concept and 

evaded the patents. 

The Alstom Rotating 

Throat results from 25 

years of design and field 

experience and the latest in fluid 

flow modeling techniques. Alstom 

uses Computational Fluid Dynamic (CFD) 

models to analyze the flow throughout the 

Rotating Throat and the entire mill. No 

other company has applied these scientific 

methods to throat design and pulverizer 

flow management. As a result, the Alstom 

Rotating Throat has lower pressure drop, 

minimal spillage, lower wear and better 

performance than competitors throats. 

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5 

Wing Tips are used to control the open 

area of the Rotating Throat and reduce 

turbulence at the end of the vanes. Alstom 

utlitizes radial blocks called Wing Tips. 

These radial blocks are welded to the 

trailing edge of the throat vanes to 

approximate an air foil shape. 

A true air foil shape is not really necessary 

in this application. Maximum lift and drag 

reduction are not the objectives of this 

vane. The vane is intended to turn the flow 

with minimum turbulence and simplicity. 

The Wing Tip performs these functions well 

and allows for easy open area adjustment.

Alstom Advanced 

Static Classifiers 

Through the use of CFD modeling, Alstom 

created an Advanced Static Classifier (ASC) 

that out performs the original design and all 

competing classifiers. While other 

companies may guess at the flow 

characteristics, estimate velocities 

and ignore particle loading, Alstom 

mathematically models the 

pulverizer and scientifically designs 

classifiers for better performance. 

Competitor A 

• High pressure drop 

• High turbulence 

• High wear in lower 

section of mill 

Competitor B 

• High 

pressure drop 

• Classifier 

overloading 

• High classifier 

outlet velocity 

• High classifier 

pressure drop 

• Poor fineness 

Original 

• Fixed Vane Angle 

• Internal Adjustment 

• Flap Return Mechanism 

Alstom 

• Smooth 

uniform flow 

through mill 

• Low 

pressure drop 

• Even classifier 

loading 

• Low wear 

• Good fineness 

ASC 

• Adjustable Vane Angle 

• External Adjustment 

• Inverted Cone Return 

The Alstom Advanced Static Classifier has 

several technical improvements over the 

original classifier for the MPS mill. It 

performs better with improved 200 mesh 

and 50 mesh fineness. The classifier is 

externally adjustable to control fineness. It 

eliminates the discharge doors that are 

historically unreliable. 

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7 

Mill Upgrades for 

Powder River Basin Coal 

Powder River Basin (PRB) coal is very 

popular for emission reduction and 

generation cost reduction. In many cases, 

the mill can process this coal with few 

operational problems. However, high inlet 

temperatures and wet coals do create some 

maintenance problems. Castings exposed 

to high temperatures can crack. The 

wet coal accelerates corrosion in 

several areas of the mill. Alstom 

offers mill mprovements for PRB 

coal firing. 

New Cast Iron Yokes 

and Ring Seats 

Due to the high moisture 

content, PRB coal needs 

very high inlet air 

temperatures to dry it. 

Air temperature can be 

up to 700°F. The hot 

air blows directly on 

the yoke and over 

time, temperature 

and cycles, the yoke 

may crack. 

Alstom supplies new 

high quality cast iron 

replacement yokes. These 

yokes are cast in the USA 

from quality ductile cast 

iron. Ductile iron has more 

resistance to cracking than 

cast grey iron. Yokes come in 

several heights.

Ring Seats also are stressed by the 

high temperature associated with PRB 

operation. Cracks often occur in the outside 

wall and bottom of the seats. Alstom can 

repair ring seats but sometimes 

replacement is more economical. Alstom 

makes these replacements from high quality 

ductile cast steel. 

Stainless Steel Pyrites Gates 

and Stainless Parts 

It is hot and corrosive in the bottom of the 

pulverizer. With PRB coal, water washing 

and fire fighting can also occur. The 

standard steel pyrite gate rusts and 

corrodes quickly in these conditions 

and soon the gate is stuck open 

or closed. 

Alstom offers 

complete new 

stainless steel 

pyrite gates. If most 

of the gate assembly is 

in good condition, 

a stainless gate may be 

all that’s needed to assure 

reliable operation. 

Stainless Seal Air Header 

After several years of PRB coal firing, Seal 

Air Headers can corrode away. The wet coal 

sits on the top of the header. With time, 

temperature and humidity, the header rots 

through from the top. For extended 

operation with PRB, a stainless steel header 

is recommended. Save those expensive roll 

wheel assemblies from contamination! A 

hole in this header can result in 

contamination of the wheels. 

Heavy Duty Pyrite Plows 

To avoid fires and explosions, the windbox 

area needs to be kept clean of rejects and 

debris. It is best to avoid spillage by 

maintaining the throat area, but the pyrite 

plows are still important. 

Brushes are not recommended for this area. 

They do not sweep the debris and allow 

build up that can lead to fires. 

Alstom Heavy Duty Pyrite Plows sweep the 

mill properly and stand up to tramp iron 

and rock. 

8

Roll Wheel 

Alstom offers high quality Roll Wheel 

Rebuilds and new Roll Wheel Assemblies. 

The Alstom rebuilds are performed at our 

Regional Service Centers. 

• Complete disassembly 

and cleaning 

• Dimensional inspection 

of shaft, hub, etc. 

• Worn consumable 

parts replaced 

• Major components 

repaired 

• Reassembled to strict 

procedures and 

tolerances 

• Upgrades to Triple 

Seals, Vent Valve and 

Weld Overlay Tires are 

available 

• Replace, Repair, Rotation 

(R 3 ) Programs 

Roll Wheel Assembly 

Repaired Hub 

Weld Treaded Tire 

9 Triple Seal Upgrade

Yoke and Yoke Air 

Seal Repairs 

The Yoke Air Seal contains the hot primary air 

within the mill. They prevent dusty hot air 

from contaminating the mill bay and 

potentially the gearbox. They 

also reduce heat transfer into 

the gearbox. If your 

gearbox oil is running 

hot or contaminated, 

the Yoke/Air seal 

may need 

replacement or 

repair. Alstom 

can repair the 

yoke saving 

substantial 

cost over 

replacement. 

The air seal 

labyrinth rings can 

be replaced to 

match. 

Case Steel Housing 

Call Alstom For: 

• Yoke Repairs 

• Air Seal Labyrinth Rings 

• Yoke Sleeves for field repair 

• Over and undersized Labyrinth Rings for 

field repairs 

• Cast Steel Air Seal Housing 

• Two Piece Air Seal Housing for field 

installation without gearbox removal 

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Gearbox Overhauls 

The MPS-type gearbox is a well-designed 

and built machine. It can provide long, 

reliable service when properly assembled 

and maintained. 

After 20 years or more of service, 

a rebuild or replacement may 

be needed to maintain reliability. 

Alstom has the parts, gearboxes and 

services: 

• Replacement parts for the 

gear drive, gears, 

bearing, shafts, seals 

• Rebuilds to as-new 

condition as an 

economic alternative 

to new units 

• New gearboxes in 

stock and in 

production 

• Fleet rebuild 

programs 

• Rental agreements 

• Purchase options

Ceramic Lining and 

Vacuum Bonded Liners 

The use of ceramic lining is best for 

high erosion, low impact locations. Alstom 

offers the most comprehensive wear 

solutions for all wear issues. 

• Vacuum Bonded Tiles 

Thin Dynawear II Ceramic Tiles are 

bonded directly to the component. 

This is especially useful where space or 

component size doesn’t allow thick tile. 

This arrangement is very impact resistant, 

but limited to moderate temperatures. 

• Plug Welded Tile 

The most common ceramic 

application. Used in 

cones, wall liners, 

turrets. 

• Brazed 

Tungsten 

Carbide 

Very high wear 

resistance and 

excellent impact 

resistance. More 

expensive than 

the ceramic 

options and used 

in specialized 

locations. 

• Specialty Ceramics 

Call for more information. 

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Gear Drive Rebuilds 

Alstom offers gear inspection and re-grinding. Call to discuss options.

Yoke and Yoke Air Seal Replacement Parts 

MPS-type Mill Plow – Yoke Air Seal Assembly 

Item Description Part No. 

1 Yoke - Cast Iron, 35-3/4" height 249335E 

Yoke - Cast Iron, 47-7/8" height 249334E 

Yoke - Cast Iron, 29-7/8" height 170726E 

Yoke Repair Kit for Ring Seat Pilot Crack GP-13274 

Yoke Repair Kit for Air Seal Surface GP-13410 

Conversion Kit Short to Tall Yoke GP-13397 

2 Plow Spacer 146134B 

3 Plow Assembly - Long 149654D 

4 Plow Assembly - Short 145401C 

5 Clamping Ring Segment Set - Top 155232D 

6 Clamping Ring Segment Set - Bottom 155231D 

Seal - 0.010" Thick 8800331 

Seal - 0.010" Thick 8800328 

7 Cap Screw 1/2x2 13-3074 

8 Lock Washer 15-2004 

9 Seal Ring Set (8 segments) 3084489-1 

10 Air Seal Housing Assembly, Cast Steel, Split 2 piece 3084487-A 

16 Air Seal Support 129309C 

Ring, Outer Clamp Set (Four 90) 3000926 

Ring, Inner Clamp Set (Four 90) 3000927 

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Plow Assemblies and Replacement Parts 

14 

15 

5 

6 

1 

Upper Plow Assembly 

(1 Required Per Mill) 

13 

Plow Assembly 


4 

3 

2 

8 

10 11 12 

Item Application 

SLOPED 

BOTT OM MILL 

1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

FLAT 

BOTT OM MILL 

7 

Lower Plow Assembly 


13 

Plow Assembly 

14 

Torsion Spring 

15 

W ear Plate 

Note: P/N-HD Designates Heavy Duty Plow 

9 

Description Part No. 

Upper Plow Assembly 8000113 

Plow Shims 8000113-6 

Plow Shaft 8000113-14 

Torsion Spring 8000113-15 

W ear Plate 8000108 


Lower Plow Assembly 8000117 

Plow Shaft GP-13407 

Torsion Spring 8000117-25 


W ear Plate GP-13408 


8002749 

8002789-25 

8001392 

PLOW ASSEMBLIES

Ring Seat Assembly 

MPS-type Mill Throat – Table Assembly 


1 1/2-13 UNC x 3/4 SHCS 

2 1/2 Lock Washer 

3 1/2-13 UNC x 2-1/4 SHCS 


5 Cover Cone - Cast Steel 8000233 

6 Gasket 31018-0346 

7 3/4-10 UNC x 1-1/2 


9 Cover Plate 129314C 

10 Wedge Bolt 8000069 

11 Grinding Segment Assembly (12 Pieces) 8002745 

11 Grinding Segment Assembly (12 Pieces) 

Continuous Taper (improved) 8002745-A 

11 Grinding Segment Assembly (12 Pieces) 

Low Profile Track - Must use Low Profile Tire 8002745-LP 

11 Grinding Segment Assembly (12 Pieces) MPS 89G 8002743 

12 Drive Pin 95745A 

14 Ring Seat Seal Set (6 Pieces) 4667176 

14 Ring Seat Seal Set (6 Pieces) MPS 89G 8000024 

15 Ring Seat - Cast Steel 170728E 

16 Conical Spring Washer 3.15x1.61x.0.197 118255D-F 

17 1.5-6UNC-2B Hex Nut 

18–20 Alstom Rotating Throat GP-12907 

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17 

Roll Wheel Assembly Replacement Parts 

MPS-type Mill Roll Wheel Assembly


1 2-4.5NCx3 Cap Screw 

2 2" Lock Washer 

3 2" Washer 

4 1-8UNC Hex Nut 

5 1" Lock Washer 

6 1" Washer 

7 Plate, Brack, Wear (Std Direction) See following for options 

8 Wear Bracket See following for options 

9 Hex Head Cap Screw 11/2 x 41/2" lg MD8-00053-PP 

10 Lock Washer 11/2 15-2013 

11 Roll Shaft Retainer 8000241 

12 Bracket, Roll Wheel 8004218 

13 Pivot Pin 8000261 

14 Pivot Block 8000226 

14 Pivot Block – Special 8000226-Spl 

15 Upper Bracket Liner See following for options 

16 Hex Screw 3/4 - 10UNC - 2 x 11/2 

17 Hex Head Magnetic Pipe Plug 8004099 

18 Key 3023681 

19 Roll Shaft 8000040 

20 O-Ring 4620443 

21 Vent Valve 352315 

22 Sleeve - Roll Seal 8000254 

23 Set Screw 13-7056 

24 Roll Seal Retainer 8000711 

25 Seal – Viton GP-10109 

25 Roll Seal Spacer 8000045 

26 Keeper (Triple Seal Upgrade) GP-11293 

27 Screw (Triple Seal Upgrade) MD8-00098-EF 

28 Seal – Roll Air 8000250 

29 Lock Washer 1/2" 15-9004 

30 Hex Socket Hd Cap Screw 1/2" 13-4075 

31 Cylindrical Roller Bearing GP-10107 

32 Roll Bearing Spacer 8000270 

33 O-Ring – Roll Seal Retainer GP-10162-V 

34 Wheel – Cast Steel 8001933 

35 Washer 11/2" MD8-00017-AC 

36 Hex Socket Head Cap Screw 11/2" 9-2478 

37 Roll Bearing Spacer 8000271 

38 Spherical Roller Bearing, Position 11, 456431 GP-10108 

39 Roll Shaft Retainer 8000240 

40 O-Ring GP-2617-V 

41 Bearing Cover 8002689 

Bearing Cover Shim Set AB7-AA 

42 Hex Socket Magnetic Plug 3/4-NPTF 8004099 

42 Gasket (Sold Separately) 8000181 

43 Tire (See Options Below) 

44 Tire Clamp Ring 3023188 

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Tire Options 

Alstom offers a large selection of 

MPS-type mill tires. Alstom has a variety 

of tire sizes and geometries. 

We also have a selection of materials and 

weld overlays. 

Materials 

Trade Standard Relative 

Name Wear 

NiHard ASTM A532 Class I, Type D 1 

HiChrome ASTM A532 Class II, Type D 2 

Weld 

Overlay 4.5C – 25CR 4 

Description Material Part No. 

Standard 65" MPS 89 Tire Hi Chrome 8001466 

Standard 70" MPS 89G Tire Hi Chrome 6017253 

65" MPS 89 Tire NiHard 8000076 

Heavy Duty 66" MPS 89 Tire - 

Thicker Side Wall and Tread Hi Chrome 8001466HD 

Heavy Duty 70" MPS 89 Tire - 

Thicker Side Wall and Tread Hi Chrome 6017253HD 

Low Profile 65" MPS 89 Tire 

(must be used with 8002745-LP segments) Hi Chrome 4665232 

Rewelded Std 65" Tire Weld Overlay 8001466-RBLD 

Rewelded Std 70"” Tire Weld Overlay 6017253-RBLD

Original Style – 

Standard Direction with Extension 

Original Style – 

Opposite Direction with Extension 

Aero Style – 

Curved Design 

Roll Wheel Wear Brackets 

Protect those expensive Roll Wheel 

Brackets from wear. Alstom offers many 

styles and materials to match your coal and 

operating conditions. 

Original Style 

Flat plate 

Standard Direction 

The early MPS-type mills had throats that 

swirled the air clockwise as viewed from 

above. The Wear Bracket was on the right 

side of the roll wheel when looking in the 

mill door. 

Standard Extension 

The extension adds 

protection on the left side 

of the bracket 

Opposite Direction 

Many MPS-type mills have been modified 

and the air now swirls counterclockwise as 

viewed from above. The Wear Bracket 

must be on the left side when looking in 

the mill door. 

Opposite Extension 

The extension adds protection on the right 

side of the bracket. 

Aero Style 

The Wear Bracket is curved at the bottom to 

improve flow above the throat and around 

the roll wheel assembly. It covers all around 

the bracket, both right and left sides. 

Panel Liners 

Alstom offers Wear Bracket assemblies with 

replaceable ceramic panels. 

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Roll Wheel Wear Brackets 

Alstom offers Several Material options to match your operation 

Cost Impact Resistance Wear Resistance 

AR400 Plate Low High Low 

Chrome Carbide Plate Moderate High Moderate 

Vacuum Bonded Ceramic Moderate Moderate High 

85% Alumina Ceramic Tiles High Low High 

90% Alumina Ceramic Tiles High Low High 

Part No. 

Original Flat Plate with Welded Ceramic 

Tiles, Std and Opposite Directions 

Wear Bracket, 1" 85% Alumina Ceramic Tile, 

Std Direction, Side and Bottom Protection 8800335 


Extension to 8800335 8800335-F 


Opposite Direction, Side and Bottom Protection 8800335-A 


Extension to 8800335-A 8800335-G 

Replaceable Panels Design 

Standard Direction 

Wear Bracket Assembly with replaceable Panels, 

1" 85% Alumina Ceramic Tile, Std Direction, 

Side and Bottom Protection 8800335-B-1 


1" 90% Alumina Ceramic Tile, Std Direction, 

Side and Bottom Protection 8800335-B-2 


1" 85% Alumina Ceramic Tile, Extension to 8800335-B-1 8800335-H 


1" 90% Alumina Ceramic Tile, Extension to 8800335-B-2 8800335-H-1 

Backing Plate Only, For Clip on Panels, 

Std Direction, Side and Bottom Protection 8800335-B 

Backing Plate Only For Clip on Panels, Extension to 8800335-H-A 

Ceramic Panel, 1" 85% Alumina Ceramic Tile, 

Top, Assembly 8800335-B-1, Assembly 8800335-I 8800335-B-7 


Top, Assembly 8800335-B-2, Assembly 8800335-I-1 8800335-B-7-90% 


Side, Assembly 8800335-B-1, Assembly 8800335-C-1 8800335-BC-5 


Side, Assembly 8800335-B-2, Assembly 8800335-C-2 8800335-BC-5-90% 


Two per Assembly, Side and Bottom, 

Assembly 8800335-B-1, Assembly 8800335-C-1 8800335-BC-6 


Two per Assembly, Side and Bottom, 

Assembly 8800335-B-2, Assembly 8800335-C-2 8800335-BC-6-90% 


Top, Assembly 8800335-H, Assembly 8800335-C-1 8800335-C-7 


Top, Assembly 8800335-H-1, Assembly 8800335-C-2 8800335-C-7-90% 

Ceramic Panel, 1” 85% Alumina Ceramic Tile, 

Side, Assembly 8800335-H 8800335-F-8 

Ceramic Panel, 1” 85% Alumina Ceramic Tile, 

Side, Assembly 8800335-H-1 8800335-F-8-90%

Part No. 

Replaceable Panels Opposite Direction 


1" 85% Alumina Ceramic Tile, Opposite Direction, 

Side and Bottom Protection 8800335-C-1 


1" 90% Alumina Ceramic Tile, Opposite Direction, 

Side and Bottom Protection 8800335-C-2 


1" 85% Alumina Ceramic Tile, Extension to 8800335-C-1 8800335-I 


1" 90% Alumina Ceramic Tile, Extension to 8800335-C-2 8800335-I-1 


Opposite Direction Side and Bottom Protection 8800335-C 


Extension to 8800335-C 8800335-I-A 


Top, Assembly 8800335-B-1, Assembly 8800335-I 8800335-B-7 


Top, Assembly 8800335-B-2, Assembly 8800335-I-1 8800335-B-7-90% 


Side, Assembly 8800335-B-1, Assembly 8800335-C-1 8800335-BC-5 

Ceramic Panel, 1" 90% Alumina Ceramic Tile, Side, 

Assembly 8800335-B-2, Assembly 8800335-C-2 8800335-BC-5-90% 


Two per Assembly, Side and Bottom, Assembly 8800335-B-1, 

Assembly 8800335-C-1 8800335-BC-6 


Two per Assembly, Side and Bottom, Assembly 8800335-B-2, 

Assembly 8800335-C-2 8800335-BC-6-90% 


Top, Assembly 8800335-H, Assembly 8800335-C-1 8800335-C-7 


Top, Assembly 8800335-H-1, Assembly 8800335-C-2 8800335-C-7-90% 


Side, Assembly 8800335-I 8800335-G-8 


Side, Assembly 8800335-I-1 8800335-G-8-90% 

Complete Kits, Replaceable Panel Style Lower 

Wear Bracket and AR400 Upper Wear Bracket 

Kit, Wear Bracket, Complete Lower Std and Ext in 

1" 85% Alumina Ceramic Tile, Upper AR400 Plate 8800335-Z-1 

Kit, Wear Bracket, Complete Lower Opp and Ext in 

1" 85% Alumina Ceramic Tile, Upper AR400 Plate 8800335-Z-2 


1" 85% Alumina Ceramic Tile replaceable Panels, 

Upper AR400 Plate 8800335-Z-3 



Upper AR400 Plate 8800335-Z-3-A 



Upper AR400 Plate 8800335-Z-4 



Upper AR400 Plate 8800335-Z-4-A 

Specials 

Wear Bracket Special, 1" 85% Alumina Ceramic Tile, 

One Piece, Flat Plate, Opposite Direction, 

Side and Integral Pivot Block Protection 8800335-M 

Wear Bracket Special, 1" 85% Alumina Ceramic Tile, 

One Piece, Flat Plate, Std Direction, 

Side and Bottom Protection, Relief for Housing Clearance 8800335-N 

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Part No. 

Aero Style with AR400, Chrome Carbide or 

Vacuum Bonded Ceramic Tiles, 

Standard and Opposite Directions 

Plate, Bracket, Wear (Standard Direction) 8000223L 

Roll Bracket Liner, AR400 Plate, One Piece, 

Flat Plate, Std Direction, Side and Bottom Protection 8000222 


Flat Plate, Extension to 8000222 for Opposite Direction 8000222F 

Roll Bracket Liner, AR400 Plate, One Piece, Flat Plate, 

Opposite Direction, Side and Bottom Protection 8000222-A 

Roll Bracket Liner, Chrome Carbide, Three Pieces, 

Curved as shown 8000222CC 

Roll Bracket Liner, Vacuum Bonded Ceramic Tile, 

Three Pieces, Curved as shown 8000222VBC 

Roll Bracket Liner, 1" 85% Alumina Ceramic Tile, 

One Piece, Flat Plate, Std Direction, 

Side and Bottom Protection 8800335 


One Piece, Flat Plate, 

Extension to 8800335 for Opposite Direction 8800335-F 


One Piece, Flat Plate, Opposite Direction, 

Side and Bottom Protection 8800335-A 

Upper Bracket Liners 

Plate, Bracket, Wear (Standard Direction) 8000223L 


Flat Plate, Std Direction, Side and Bottom Protection 8000222

Asset Planning and Life Cycle Worksheet 

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25 

Seal Air Assembly 

MPS-type Mill Seal Air Assembly


1 Air Pipe Support – 26 in 84392B 

1 Air Pipe Support – 22 in 118213D-0002 

2 Seal Air Header, No Support or Inlet 118213-PD 

2 Seal Air Header Assembly with Supports and Inlet 118213D 

2 Inlet Pipe Only 118213D-003 

3 5/8" Hex Head Cap Screw 

4 Upper Seal Air Pipe Flange 95790A 

5 Air Seal Extension 84391B 

6 Gasket 95748A 

7 5/8" Lock Washer 

8 5/8" Nut 

9 3/4" Hex Head Cap Screw 

10 Gasket 

11 Bearing Guide GP-11089 

12 Pipe Support (84386B) GP-11088 

13 3/4" Nut 

14 3/4" Lock Washer 

15 Bearing Cartridge Case (each) 8005528 

16 Self Aligning Ball Bushing GP-11092 

17 Intermediate Seal Air Pipe (55.375 OL) 3026862 

17 Intermediate Seal Air Pipe (66.625 OL) 4555376-A 




18 Hex Socket Head Cap Screw 13-4168 

19 Lock Washer 15-9005 

20 Bearing Cover 8004221 

21 Self Aligning Ball Bushing GP-11093 

22 Bearing Ring 3018775 

23 Bearing Case 8005527 

Complete Assemblies 

Description Part No. 

Complete Assemblies, Items 12 to 23 

Specify Intermediate Seal Air Pipe Length 8000255 

Complete Assemblies, Items 11 to 23 

Specify Intermediate Seal Air Pipe Length C-PLVC-0931 

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27 

Spring Frame, Pressure Frame 

and Loading Assembly 

MPS-type Mill Pressure Frame Assembly


1 Spring Frame (Cast Steel) 170721E 

2 Spring, Compression 7001613 

3 Pressure Frame (Cast Steel) 170722E 

4 Screw Hex Head 1-1/4" 3135 

5 Lock Washer 

6 Wear Plate, Pressure Frame 8000110 

Wear Plate, Housing, 4 Holes 8000112 

Wear Plate, Housing, 2 Holes 3062857 

7 Pivot Block 8000226 

8 Set Screw 5/8"x 1-1/2" Cup Point 

9 Split Pin 

10 Clevis Pin 

11 Washer 

12 Link 

13 Eye 

Pull Down Stud 2"-8UNC x 6" Lg 3018951 

Seal Loading Rod 8001473 

14 Wire Rope Assembly, 144.75 OAL 8800520 

14 Wire Rope Assembly, 132.25 OAL 130206B Mk 2 

14 Wire Rope Assembly, 124 OAL 8800511 

14 Wire Rope Assembly, 136 OAL 8800517 

14 Wire Rope Assembly, 147.25 OAL 8800516 

14 Wire Rope Assembly, 159 Eye to End Length 84832B 

14 Lower Load Rod, 66" OAL 8001474 

14 Clevis Assembly 3022591 

15 Nut 

16 Top Plate 

17 Tension Cylinder 4675536 



18 Tie Rod 

19 Eye Loading Cylinder 

20 Bushing 

21 Nut 

22 Screw 2" 

23 Lock Washer 

24 Pin 

25 Split Pin 

26 Clevis 8005529 

Not Shown 

Loading Rod Seal Kit 7004533 

Loading Rod Seal Kit 8004344 

Pressure Frame Liner - Ceramic Panel GP-10910 

28

29 

Louver and Classifier Assembly 

MPS-type Mill Classifier Discharge Assembly


Louver Section, Two Half Sections 

(104x19.5, 24 Vane) 179610E 

Louver Section (105x19.62, 28 Vane) 170735E 

Louver Section (105x19.62, 24 Vane) 229154E 

Vane, Classifier 8000057 

Vane, Classifier, AR400 Material 8000057-1 

Vane, Classifier Louver, Corten Material 8002048 

Vane, Louver Section 8002499 

Vane, Louver Section 8002767 

Louvers, Classifier, Adjustable 8004239 

Blade, Classifier Extension 83960-0 

Cone, Ceramic Lined 147772D MK-1 

Cone, Classifier, Ceramic Lined 8800802 

Cone Ceramic Lined 8800829 

Cone, Classifier, Ceramic Lined 8802364 

Cone, Classifier Repair 8802364-1 

Cone, Classifier, Without Ceramic 8001404 

Cone, Classifier Section 8001406 

Cone, Classifier Ceramic Lined 4626195 



Gate, Flap 3023403 

Gate, Flap, MPS-89 Mill 3023404 

Classifier, Discharge Section 24 3028144 

Discharge, Assembly Section 3067836 

Field Aleration Items Only 439058E 

Hinge, Gate 4519546 

Discharge, Classifier Assembly 8000228 

Plate, Cone Throat Seg 8001380 

Plate, Cone Throat 7 Per Set 8001389 

Discharge, Assembly Classifier 8001409 

Discharge, Assembly 8001412 

Classifier Discharge Assembly 24 8001415 

Discharge, Assembly Section 8001416 

Section, Classifier, Discharge 8001417 

Discharge, Assembly Classifier 8001420 

Classifier Discharge Section Assembly 8002769 

Bracket, Relief Gate Hinge 8002779 

Gate, Flap, Classifier 8005243 

Section, Classifier Discharge 8005719-1 

Plate Bottom GP-13411 

30

31 

Turret and Discharge Valve Assembly

33 

Turret and Discharge Valve Assembly 


5 Mounting Bracket - RH GP-13020-A 

10 Mounting Bracket - LH GP-13020 

15 Lever Arm GP-13026-A 

20 Lever Arm GP-13026 

25 Screw - Set 13-7072 

30 Collar - Shaft V00-2330 

35 Grease Fitting MP-2653 

40 Screw - Hex Head 13-3132 

45 Washer - Lock 15-2007 

50 Washer - Plain 1655 

55 Screw - Hex Head 13-3079 

60 Nut - Jam 11-4010 

65 U-Bolt V00-2058 

70 Washer - Plain MD8-00022-AC 

75 Nut - Hex 11-2006 


90 Pin - Cotter 751 

95 Pin - Clevis GP-13032 

100 Turnbuckle GP-13044 

105 Arm Key GP-13045 

110 Arm Key GP-13046 

115 Arm Key GP-13037 

120 Valve Plate GP-13038 

130 Screw - Set 13-8028 

135 Nut - Jam 11-4006 

140 Bearing - Bushing Type GP-13041 

145 O-Ring MP-8002 

150 Nut - Wing MD8-00076-AC 

155 Washer - Lock 15-2000 

160 Washer - Plain MD8-00022-AA 

165 Cover Plate GP-13023 

170 Cover Plate GP-13022-A 

175 Cover Plate GP-13021-A 



190 Pin - Clevis GP-13033 

195 Shaft GP-13031 

200 Shaft GP-13030 


210 Valve Lever GP-13039 

215 Turret Housing - Ceramic Lined GP-13019 

Not Shown 

Turret Liner with 1/8” Ceramic GP-10908-CERMA 

Turret Liner Set, 14 pcs, Ceramic Lined GP-12766 

Swing Valve Hinge 145382C 

Swing Valve Hinge and Shaft 145382C-1 

Turret Liner - Ceramic 189677C-1

S E R V I C E C E N T E R S 

34

US Headquarters 

Service Centers 

Horsburgh & Scott 

Aurora, CO 

Tyler, TX 

Cleveland, OH 

Erlanger, KY 

Suwanee, GA 

Harrisburg, PA 

Windsor, CT 

Alstom Power Inc. 

2000 Day Hill Road 

Windsor, CT 06095-0500 

Tel: 860.285.5400 

Fax: 860.285.9611 

www.service.power.alstom.com 

PSE/BPROB/MPSPLV07/eng/PSER1/10.07/US/6358 

© 2008 Alstom Power Inc. 06095. Alstom, the Alstom logo and any alternative version thereof are trademarks and service marks of Alstom. The other names mentioned, registered or not, are the property of their respective companies. This document 

is submitted in confidence and is to be used solely for the purpose for which it is furnished. Any technical and other data contained in this document is provided for information only. Neither Alstom nor its officers or employees accept responsibility for 

or should be taken as making any representation, warranty or guarantee (whether expressed or implied) as to the accuracy or completeness of such data or the achievement of any projected performance criteria where these are indicated. Alstom 

reserves the right to revise or change this data at any time without further notice.

POWER SERVICE - APComPower, Inc.

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