Final_Drawings_with_Cover_Sheet_signed_20251008.pdf

PDF 2 MB Posted Oct 17, 2025

Attached to: USACE NWP, John Day Track Wheels Purchase Federal contract opportunity
Solicitation number: W9127N26QA001
Issued by: Department of the Army Corps of Engineers Engineering District Portland

About this file

Written by GovTribe AI · Oct 17, 2025

This document is a detailed engineering design set for the John Day Lock and Dam Navlock Downstream Gate Trackwheel Replacement project by the US Army Corps of Engineers Portland District. The project involves replacing six trackwheel assemblies, with two additional spare assemblies, at the downstream vertical lift gate. Each trackwheel assembly comprises multiple precision-engineered components including a trackwheel shaft, self-lubricated bushings, eccentric bushings, keeper plates, and clamp plates, predominantly constructed from stainless steel and nickel aluminum bronze materials.

The technical drawings provide comprehensive mechanical specifications, including tight tolerance requirements, surface finish specifications, and detailed assembly instructions. Critical components like self-lubricated bushings and eccentric bushings have specific dimensional tolerances and surface finish requirements. The design includes provisions for spare parts, with additional components such as polymer-coated bushings, dynamic seals, and O-ring static seals. The project emphasizes precision engineering, with most components having extremely tight dimensional tolerances (often within 0.002-0.005 inches) and specific chamfer and surface finish requirements.

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Other files for this federal contract opportunity

Other files attached to USACE NWP, John Day Track Wheels Purchase, newest first.
File	Type	Posted
Solicitation Amendment - W9127N26QA0010001.pdf	PDF	Nov 7, 2025
Solicitation Amendment W9127N26QA0010001 SF 30.pdf	PDF	Nov 7, 2025
Questions Answered_11.07.2025.pdf	PDF	Nov 7, 2025
Contracting Officers Decision FAR Part 13.501 JDA Trackwheel amended_Redacted.pdf	PDF	Nov 7, 2025
Questions Answered_11.04.2025.pdf	PDF	Nov 5, 2025
Questions answered_31Oct2025.pdf	PDF	Oct 31, 2025
JDGTRE26_SPECS_ADV.pdf	PDF	Oct 22, 2025
Contracting Officers Decision FAR Part 13.501 JDA Trackwheel_Redacted.pdf	PDF	Oct 20, 2025
Solicitation - W9127N26QA001.pdf	PDF	Oct 17, 2025
SOW_JDN D-S Gate Trackwheel.pdf	PDF	Oct 17, 2025

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W9127-N26-QA-001

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US Army Corps of Engineers

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DOWNSTREAM VERTICAL LIFT GATE

PROJECT

DISTRICT BOUNDARY MAPPROJECT PHOTO

DRAWING INDEX

SHEET

ID DRAWING TITLE

NUMBER

SHEETS

General

G-000 COVER SHEET

G-001 VICINITY MAP AND LOCATION

G-002 DRAWING INDEX

Mechanical

M-001 MECHANICAL NOTES

M-101 TRACKWHEEL GENERAL ASSEMBLY

M-501 TRACKWHEEL ASSEMBLY

M-502 TRACKWHEEL

M-503 TRACKWHEEL SHAFT

M-504 SELF-LUBRICATED COMPONENTS

M-505 ECCENTRIC BUSHINGS

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MECHANICAL GENERAL NOTES:

1. INFORMATION, TOLERANCES, AND NOTES ON THIS SHEET APPLY TO ALL MECHANICAL DRAWINGS, UNLESS NOTED OTHERWISE.

2. ALL LINEAR UNITS ARE FEET AND INCHES OR INCHES AND ALL ANGULAR UNITS ARE DEGREES, UNLESS NOTED OTHERWISE.

3. PARANTHESES INDICATE REFERENCE DIMENIONS. THEY ARE PROVIDED FOR CONVENIENCE ONLY AND DO NOT CONTROL.

4. BREAK ALL CORNERS AND EDGES. BLEND SMOOTH ALL TRANSITIONS AT MACHINED COMPONENTS.

5. PROVIDE SURFACES FINISHES PER ASME B46.1 AS SHOWN ON THE DRAWINGS. PROVIDE A 125 MICRO-INCH FINISH ON ALL

MACHINED SURFACES, UNLESS NOTED OTHERWISE.

6. INSTALL STAINLESS STEEL FASTENERS WITH AN ANTI-SEIZE LUBRICANT IN ACCORDANCE WITH SPECIFICATION SECTION 05 50

14.00 25, UNLESS NOTED OTHERWISE.

7. TORQUE ALL FASTENERS TO 75% OF THE PROOF LOAD, UNLESS NOTED OTHERWISE, ACCOUNTING FOR THE ANTI-SEIZE

LUBRICANT USED.

8. ALL COMPONENTS INDICATED AS SELF-LUBRICATED MUST BE A SELF-LUBRICATED POLYMER COATED NICKEL ALUMINUM

BRONZE MATERIAL. SEE SPECIFICATION SECTION 35 05 40.17 FOR FURTHER REQUIREMENTS.

9. ALL DIAMETRICAL DIMENSIONS INDICATED AS NOMINAL MUST BE COORDINATED WITH THE BUSHING MANUFACTURER. THE

BUSHING MANUFACTURER MUST PROVIDE THE SPECIFIC DIMENSION VALUE AND ASSOCIATED TOLERANCE FOR EACH INSTANCE. COORDINATE ALL ASSOCIATED RUNNING CLEARANCES AND SURFACE FINISHES WITH THE BUSHING

MANUFACTURER.

10. ALL SELF-LUBRICATED BUSHINGS MUST BE INSTALLED INTO THEIR CORRESPONDING BORES USING AN INTERFERENCE FIT.

THE SPECIFIC INTERFERENCE FIT AND ASSOCIATED DIMENSIONS, TOLERANCES, AND SURFACE FINISHES FOR EACH BUSHING

AND MATING SURFACES MUST BE PROVIDED BY THE BUSHING MANUFACTURER.

11. THE TYPE AND CONFIGURATION OF THE DYNAMIC SEALS SHOWN ARE FOR ILLUSTRATIVE PURPOSES ONLY. THE DYNAMIC

SEALS MUST BE SELECTED BY THE BUSHING MANUFACTURER.

12. ALL FABRICATED STAINLESS STEEL COMPONENTS MUST BE PASSIVATED. ALL STAINLESS STEEL PURCHASED COMPONENTS

MUST BE ORDERED PASSIVATED WHERE AVAILABLE. SEE SPECIFICATION SECTION 05 50 14.00 25 FOR FURTHER

REQUIREMENTS.

13. ASSIGN A PART NUMBER TO ALL COMPONENTS AND MARK, BY EITHER EMBOSSING OR ETCHING. SHOP ASSEMBLE ALL PARTS

TO CONFIRM PROPER FIT UP AND TOLERANCING.

14. APPLY LABEL AND ORIENTATION LINES TO EACH ECCENTRIC BUSHING AS INDICATED BY EITHER ENGRAVING OR ETCHING. THE

FINAL ANGULAR DIMENSIONS FOR THE ORIENTATION LINES WILL BE PROVIDED BY THE GOVERNMENT.

15. SHOP DRAWINGS MUST BE PREPARED IN ACCORDANCE WITH ASME Y14.5 AND MUST INCLUDE TOLERANCES AND FEATURE

CONTROLS AS REQUIRED TO FABRICATE WHEEL ASSEMBLIES THAT OPERATE AS DESCRIBED IN THIS CONTRACT WITHOUT ANY

INTERFERENCES OR BINDING DURING OPERATION.

16. IDENTIFY ALL DIMENSIONS AND FEATURE CONTROLS WITH SPECIFIED TOLERANCE REQUIREMENTS, AND VERIFY THE

IDENTIFIED DIMENSIONS AND FEATURE CONTROLS PRIOR TO ASSEMBLING ANY COMPONENTS, IN ACCORDANCE WITH

SPECIFICATION SECTION 05 50 14.00 25.

17. SEE SPECIFICATION SECTIONS:

05 50 14.00 25 - STRUCTURAL METAL FABRICATIONS

05 50 15.00 25 - CIVIL WORKS FABRICATION

35 05 40.17 25 - SELF-LUBRICATED MATERIALS, FABRICATION, HANDLING, AND ASSEMBLY

FOR FURTHER REQUIREMENTS.

16. USE THE FOLLOWING TOLERANCES UNLESS NOTED OR SPECIFIED OTHERWISE:

FRACTIONAL LINEAR: ± 1/64"

DECIMAL LINEAR: ± 0.010"

ANGULAR: ± 0.5°

LEGEND:

BLACK LINES REPRESENT NEW ITEMS, UNLESS OTHERWISE NOTED.

ABBREVIATIONS:

U/S D/S

REF

NOM

TYP

EL.

COR

DIA

THRU

MIN

MAX

MECH

HEX

SKT

PROV

QTY

= UPSTREAM

= DOWNSTREAM

= REFERENCE

= NOMINAL

= TYPICAL

= BOLT CIRCLE

= ELEVATION

= OUTER DIAMETER

= INNER DIAMETER

= CONTRACTING OFFICER REPRESENTATIVE

= DIAMETER

= THROUGH

= CENTERLINE

= RADIUS

= MINIMUM

= MAXIMUM

= MECHANICAL

= HEXAGONAL

= SOCKET

= STAINLESS STEEL

= PROVISIONAL

= QUANTITY

ASSEMBLY QUANTITIES

ASSEMBLY NAME QUANTITY SPARE QTY TOTAL QTY

TRACKWHEEL ASSEMBLY 6 2 8

SPARE PART QUANTITIES

PART NAME SPARE QTY

SELF-LUBRICATED BUSHING, POLYMER COATED 2

SELF-LUBRICATED COLLAR, POLYMER COATED 2

CONTAMINANT EXCLUSION DYNAMIC SEAL,

SELECTED BY THE BUSHING MANUFACTURER 4

AS568-262 O-RING STATIC SEAL 2

MID ECCENTRIC BUSHING 1

END ECCENTRIC BUSHING 1

SPARE QTY IS IN ADDITION TO QTY NEEDED FOR ASSEMBLY TOTAL QTY.

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NOTES:

1. PART DETAILS FOR FABRICATED COMPONENTS ON M-501.

2. CONTAMINANT EXCLUSION DYNAMIC SEAL TO BE SELECTED

BY THE BUSHING MANUFACTURER.

3. TRACKWHEEL ASSEMBLY AND SPARE COMPONENT QUANTITIES

PROVIDED ON SHEET M-001.

4. INCLUDE THE 1 in SHAFT END CAP SCREWS, CORRESPONDING

WASHERS, AND RETAINER PLATE IN EACH TRACKWHEEL ASSEMBLY

FOR SHIPMENT. INSTALL THE SHAFT END CAP SCREWS SNUG TIGHT.

SCALE:

TRACKWHEEL ASSEMBLY EXPLODED ISOMETRIC

NTS

GATE PLATES OMITTED FOR CLARITY

SCALE:

TYPICAL TRACKWHEEL ASSEMBLY ISOMETRIC

NTS

SELF-LUBRICATED BUSHING

KEEPER PLATE

CONTAMINANT EXCLUSION DYNAMIC SEAL

SELECTED BY BUSHING MANUFACTURER

5/8-11 UNC x 2-1/4 in HEX SOCKET CAP SCREWS WITH WEDGE LOCK WASHERS

1-8 UNC x 2-1/2 in HEX HEAD CAP SCREWS WITH WEDGE LOCK WASHERS

RETAINER PLATE

3/4-10 UNC x 3-1/2 in HEX HEAD BOLTS WITH WEDGE LOCK WASHERS AND HEX NUTS

END ECCENTRIC BUSHING

3/4-10 UNC x 3-3/4 in HEX HEAD BOLTS

WITH WEDGE LOCK WASHERS AND HEX NUTS

CLAMP PLATES

TRACKWHEEL SHAFT

1/2-14 NPT HEX HEAD PLUG

CONTAMINANT EXCLUSION DYNAMIC SEAL

SELECTED BY BUSHING MANUFACTURER

SELF-LUBRICATED COLLAR

MID ECCENTRIC BUSHING

3/4-10 UNC x 5 in HEX HEAD BOLTS WITH WEDGE LOCK WASHERS AND HEX NUTS

CLAMP PLATES

AS568-262 O-RING

STATIC SEAL

1/2-14 NPT HEX HEAD PLUG

AS568-265 O-RING

STATIC SEAL

TRACKWHEEL

BILL OF MATERIALS (QTY PER 1 TRACKWHEEL ASSEMBLY)

MATERIALTITLEQTYITEM

STAINLESS STEEL, ASTM A564 TYPE 630 COND. H1150TRACKWHEEL SHAFT11

STAINLESS STEEL, ASTM A564 TYPE 630 COND. H1150KEEPER PLATE12

NICKEL ALUMINUM BRONZE, ASTM B148 TYPE C95500SELF-LUBRICATED COLLAR, POLYMER COATED13 NICKEL ALUMINUM BRONZE, ASTM B148 TYPE C95500SELF-LUBRICATED BUSHING, POLYMER COATED14

STAINLESS STEEL, ASTM A564 TYPE 630 COND. H1150TRACKWHEEL15

SYNTHETIC ELASTOMER OR PTFE RESINCONTAMINANT EXCLUSION DYNAMIC SEAL,

SELECTED BY THE BUSHING MANUFACTURER

STAINLESS STEEL, ASTM F837 ALLOY 304 COND. CW5/8-11 UNC - 2A x 2-1/4 in SKT HEAD CAP SCREW87

STAINLESS STEEL, ASTM A351 GRADE CF81/2-14 NPT HEX HEAD PLUG, SEAL WATER TIGHT28

NICKEL ALUMINUM BRONZE, ASTM B150 TYPE C63000MID ECCENTRIC BUSHING19

NICKEL ALUMINUM BRONZE, ASTM B150 TYPE C63000END ECCENTRIC BUSHING110

STAINLESS STEEL, ASTM A240 TYPE 304RETAINER PLATE111

STAINLESS STEEL, ASTM F593 ALLOY 304 COND. CW21-8 UNC - 2A x 2-1/2 in HEX HEAD CAP SCREW612

STAINLESS STEEL, ASTM A240 TYPE 304CLAMP PLATE413

STAINLESS STEEL, ASTM A240 OR ASTM A276 TYPE 3041 in x 1.909 in OD WEDGE LOCK WASHER614 STAINLESS STEEL, ASTM A240 OR ASTM A276 TYPE 3045/8 in x 1.000 in OD WEDGE LOCK WASHER815 STAINLESS STEEL, ASTM A240 OR ASTM A276 TYPE 3043/4 in x 1.535 in OD WEDGE LOCK WASHER2416

STAINLESS STEEL, ASTM F594 ALLOY 304 COND. CW23/4-10 UNC - 2B HEX NUT1217

STAINLESS STEEL, ASTM F593 ALLOY 304 COND. CW23/4-10 UNC - 2A x 3-1/2 in HEX HEAD BOLT418 STAINLESS STEEL, ASTM F593 ALLOY 304 COND. CW23/4-10 UNC - 2A x 3-3/4 in HEX HEAD BOLT419 STAINLESS STEEL, ASTM F593 ALLOY 304 COND. CW23/4-10 UNC - 2A x 5 in HEX HEAD BOLT420

SYNTHETIC ELASTOMERAS568-262 O-RING STATIC SEAL121

SYNTHETIC ELASTOMERAS568-265 O-RING STATIC SEAL122

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M-501

EXISTING GATE END PLATEEXISTING GATE STIFFENER

SCALE:

TRACKWHEEL ASSEMBLY ISOMETRIC

NTS

GATE PLATES OMITTED FOR CLARITY

SCALE:

TRACKWHEEL ASSEMBLY PLAN

1-1/2" = 1'-0"

SECTION

SCALE:

- 1-1/2"=1'-0"

GATE PLATES OMITTED FOR CLARITY

SECTION

SCALE:

- 3"=1'-0"

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7 15

19 16 17

201617

SECTION

SCALE:

- 1-1/2" = 1'-0"

GATE PLATES OMITTED FOR CLARITY

181617

1214 3

DETAIL

SCALE:

- 12" = 1'-0"

DETAIL

SCALE:

181617

0.023 in NOM CLEARANCE

0.000 - 0.063 in

0.031 in NOM CLEARANCE

0.022 - 0.040 in

0.023 in NOM CLEARANCE

0.000 - 0.063 in

0.030 in NOM CLEARANCE

0.021 - 0.039 in

FINAL CLEARANCES

DETERMINED BY INDIVIDUAL

COMPONENT TOLERANCES

19 16 17

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M-502

SCALE:

TRACKWHEEL

3" = 1'-0"

1-8 UNC - 2B 1 3/4 in

LIFTING POINT

TYP 3 PLACES EACH SIDE

EQUALLY SPACED ON

BOLT CIRCLE

30 in BOLT CIRCLE

SECTION

SCALE:

- 3" = 1'-0"

0.015 A

0.005 A 0.005 A

0.015 A

(9) in

0.005 A

R107 1/2 in CROWN

1/8 in X 45°

CHAMFER

1/16 in X 45°

CHAMFER

R0.063 in MAX

SEE NOTE 1

R3/16 in, 2 PLACES

3/16 in3/16 in

3/16 in X 45° CHAMFER

1/32 in X 45° Chamfer

3/16 in X 45°

CHAMFER

3/ in

, T

0.8450.005 in7.7810.004 in

- 0

NOTES:

1. COORDINATE WHEEL BORE DIAMETER, TOLERANCE, AND SURFACE FINISH

WITH BUSHING OUTER DIAMETER PRESS FIT REQUIREMENTS, AS PER THE

BUSHING MANUFACTURER.

2. COORDINATE WHEEL HUB SURFACE FINISH WITH COLLAR RUNNING SURFACE

FINISH REQUIREMENTS AND SEAL SURFACE FINISH REQUIREMENTS, AS PER

THE BUSHING MANUFACTURER.

3. 125 MICROINCH SURFACE TEXTURE ON ALL MACHINED SURFACES, U.N.O.

4. BREAK ALL CORNERS AND EDGES.

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1/8 in X 15°

CHAMFER

SEE NOTE 2

RUNNING SURFACE

SHEET ID

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4 5/16 in4 1/2 in BOLT CIRCLE

1-8 UNC - 2B 2 in

TYP 6 PLACES EQUALLY

SPACED ON BOLT CIRCLE

- 0

8 3/8 in

SEE NOTE 1

10.0000.004 in1.9000.010 in 45 in

1/4 in X 15° CHAMFER

NOTES:

1. COORDINATE SHAFT RUNNING SURFACE DIAMETER, TOLERANCE, AND FINISH WITH BUSHING

INNER DIAMETER RUNNING CLEARANCE REQUIREMENTS, AS PER THE BUSHING MANUFACTURER.

2. MAXIMUM EXTENT OF DOUBLE OVAL GREASE GROOVES.

3. POSITION DOUBLE OVAL GREASE GROOVES TO OVERLAP CENTERED OVER GREASE PORTS.

4. 125 MICROINCH SURFACE TEXTURE ON ALL MACHINED SURFACES, U.N.O.

5. BREAK ALL CORNERS AND EDGES.

SECTION

SCALE:

T N

C K

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5/8-11 UNC - 2B 2 in

TYP 4 PLACES EQUALLY

SPACED ON BOLT CIRCLE

5 3/4 in BOLT CIRCLE

8.500 - 0.004 0.002- in

15° TAPER

45° TAPER

9 in 8.063 + 0.003 0.005+ in

9 1/2 in 1.2500.005 in

1 1/4 in

5 in

SCALE:

TRACKWHEEL SHAFT

3" = 1'-0"

15° TAPER

1/4 in X 15° CHAMFER

1/8 in X 15°

CHAMFER

0.005 C

0.002 A

1/2 - 14 NPT

5/8 in 20 in

SCALE:

SHAFT ISOMETRIC

3" = 1'-0"

SCALE:

END VIEW

3" = 1'-0"

5/ in

0.473 - 0.000 0.007+ in TYP 2 PLACES

R0.015 in MAX

3/ in

7/ in

3/ in

0.394 - 0.002 0.000+ in TYP 2 PLACES

1/2 in TYP 2 PLACES

1/4 in TYP 2 PLACES R0.015 in MAX

SECTION

SCALE:

- 6" = 1'-0"

DETAIL

SCALE:

/1 in

R1/32 in

/1 in

SEE NOTE 3

1/2 - 14 NPT

2 in 1 in

9/16 in TO CENTERLINE

R1/8 in

R1/32 in RUNNING

SURFACE

0.002 A

DETAIL

SCALE:

- 24" = 1'-0"

9/16 in THRU

GREASE PORT

3/ in

0.1890.003 in

7.844 in+0.000

- 0.002

0.017R 0.005 in

2 PLACES

0.005R 0.002 in

2 PLACES

1/8 in X 45° CHAMFER

Ø0.002 D

Ø0.002 E

SHEET ID

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-L

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2 in THRU

1 1/4 in

1/8 in X 30° CHAMFER

- 0

17 in

1.4220.004 in

1/8 in X 30° CHAMFER

7.7500.005 in

13.250 - 0.010 0.000+ in

(8 5/8) in

0.8750.004 in

7/ in N

/4 ) i n

NOTES:

1. FINAL DIMENSIONS, TOLERANCES, AND SURFACE FINISH DETAILS FOR SELF-LUBRICATED COMPONENTS TO BE

PROVIDED BY THE BUSHING MANUFACTURER FOR APPROPRIATE PRESS FIT AND RUNNING CLEARANCE.

2. COORDINATE SEAL SEAT DIMENSIONS WITH SEAL TOLERANCE REQUIREMENTS AS PER THE SEAL MANUFACTURER.

KEEPER PLATE MODIFICATIONS MAY BE REQUIRED TO ACCOMMODATE BUSHING MANUFACTURER'S SELECTED SEAL.

3. SEE SPECIFICATION SECTION 35 05 40.17 25 FOR SELF-LUBRICATED POLYMER COATED MATERIAL REQUIREMENTS.

4. COORDINATE KEEPER PLATE RUNNING SURFACE FINISH WITH BUSHING FLANGE RUNNING SURFACE REQUIREMENTS

AS PER THE BUSHING MANUFACTURER.

5. MATCH KEEPER PLATE BOLT CIRCLE DIAMETER AND HOLE POSITIONS TO CORRESPONDING SHAFT DIMENSIONS.

6. 125 MICROINCH SURFACE TEXTURE ON ALL MACHINED SURFACES, U.N.O.

7. BREAK ALL CORNERS AND EDGES.

LUBRICATED

SURFACES

SEE NOTE 3

R1/8 in

SEE NOTE 1

LUBRICATED

SURFACE

SEE NOTE 3

SECTION

SCALE:

- 3" = 1'-0"

SECTION

SCALE:

SECTION

T N

C K

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21/32 in THRU 1 1/16 in 3/4 in

TYP 8 PLACES EQUALLY SPACED

ON BOLT CIRCLE

1/16 in X 45°

CHAMFER

1/4 in X 15°

CHAMFER

1/16 in X 45°

CHAMFER

1/4 in X 15°

CHAMFER

/8 ) i n

9 in

R5 in

R6 3/4 in

1 1/2 in in

0.4700.005 in

1 1/2 in

0.766 in, SEE NOTE 2

0.734 in, SEE NOTE 2 1 in

1/16 in X 45°

CHAMFER

1/ in

4 1/2 in

SCALE:

SELF-LUBRICATED BUSHING

3" = 1'-0"

SCALE:

SELF-LUBRICATED COLLAR

3" = 1'-0"

SCALE:

KEEPER PLATE

3" = 1'-0"

SCALE:

CLAMP PLATE

3" = 1'-0"

SECTION

SCALE:

1/16 in X 45°

CHAMFER

5/32 in X 45°

CHAMFER

13/16 in THRU

TYP 2 PLACES

1/ in

0.002 A 0.002 B

/8 in

, S

0.002 A 0.002 A

/8 in , S

0.1060.003 in

0.031R 0.005 in

2 PLACES

0.010R 0.002 in

2 PLACES

DETAIL

SCALE:

- 24" = 1'-0"

(Ø 7.228) in

0.1200.003 in

5 3/4 in BOLT CIRCLE

SEE NOTE 5

1/8 in X 45°

CHAMFER

1/32 in

66°, 2 PLACES

3/16 in X 45°

CHAMFER

1/16 in

R1/32 in 1/8 in X 45° CHAMFER

1/16 in X 45°

CHAMFER

R1/32 in

1/16 in X 45°

CHAMFER

SEE NOTE 1

RUNNING

SURFACE

17 in

1/8 in X 15°

CHAMFER

1/8 in X 45°

CHAMFER

1/8 in X 45° CHAMFER

Ø0.002 A

SEE NOTE 5

Ø0.010 B

SHEET ID

E D

N M

E D

N N

1 2 3 4

6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

C O

N O

D R

B Y:

C H

D B

U .S

. A R

M Y

C O

O F

R S

M-505

B U

T N

C K

D O

W N

H N

L O

C K

O C

X-

-X

P O

, O R

-3

R . S

O U

S, P

D . S

US Army Corps of Engineers

NOTES:

1. MATCH RETAINER PLATE BOLT CIRCLE DIAMETER AND HOLE POSITIONS

TO CORRESPONDING SHAFT DIMENSIONS.

2. ENGRAVE OR ETCH ALL LABELS AND ORIENTATION LINES AS INDICATED

TO A DEPTH OF 0.010 in - 0.020 in.

3. THE ANGULAR DIMENSIONS INDICATED FOR THE ORIENTATION LINES ARE

PROVISIONAL. THE FINAL ANGULAR DIMENSIONS FOR THE ORIENTATION

LINES WILL BE PROVIDED BY THE GOVERNMENT.

4. 125 MICROINCH SURFACE TEXTURE ON ALL MACHINED SURFACES, U.N.O.

5. BREAK ALL CORNERS AND EDGES.

SECTION

SCALE:

3 7/16 in

0.5000.005 in

- 0 .0

13 in

- 0

11/16 in THRU, TYP 4 PLACES

EQUALLY SPACED ON BOLT CIRCLE

13 in

11/16 in THRU, TYP 4 PLACES

EQUALLY SPACED ON BOLT CIRCLE

- 0

13/16 in THRU, TYP 4 PLACES

1 1/32 in THRU

TYP 6 PLACES EQUALLY

SPACED ON BOLT CIRCLE

- 0

1/16 in X 45

CHAMFER

1/8 in X 15°

CHAMFER

11 in BOLT CIRCLE

1/8 in X 15° CHAMFER

1/8 in X 15°

CHAMFER

1/8 in X 45°

CHAMFER

1/8 in X 15° CHAMFER

1/8 in X 15°

CHAMFER

15 1/2 in

1 1/2 in X 45° CHAMFER

4 PLACES

/2 in 3

7/ in

3/ in

6 3/4 in 6 3/4 in

7 3/4 in

SCALE:

RETAINER PLATE

3" = 1'-0"

SCALE:

MID ECCENTRIC BUSHING

3" = 1'-0"

SCALE:

END ECCENTRIC BUSHING

3" = 1'-0"

/2 ) i n

R0.015 in MAX

/4 ) i n

R0.015 in MAX

45°

1.9300.010 in

4 1/2 in BOLT CIRCLE

SEE NOTE 1

0.002 A

1/2 in TEXT HEIGHT, TYP

1/16 in

4 PLACES

ENGRAVED

ORIENTATION

RIM LINE

4 PLACES

ENGRAVED

ORIENTATION

FACE LINE

4 PLACES

ENGRAVED LABEL "MID-S"

ENGRAVED LABEL

"T/B-S"

ENGRAVED LABEL

"T/B-N"

ENGRAVED LABEL "MID-N"

DETAIL

SCALE:

VIEW

3/16 in 4 PLACES

DETAIL

SCALE:

ENGRAVED

ORIENTATION

FACE LINE

4 PLACES

ENGRAVED

ORIENTATION

RIM LINE

4 PLACES

ENGRAVED LABEL "MID-N"

ENGRAVED LABEL

"T/B-N"

ENGRAVED LABEL

"T/B-S"

ENGRAVED LABEL "MID-S"

1/16 in

4 PLACES

VIEW

SCALE:

1/2 in TEXT HEIGHT, TYP

3/16 in 4 PLACES

0.5000.005 in

1/8 in X 45°

CHAMFER

1/8 in X 45° CHAMFER

SCALE:

TYPICAL ORIENTATION FACE LINE

12" = 1'-0"

3/16 in

2 in

3/ in

1/ in

33.56°.01° PROV

SEE NOTE 3

33.56°.01° PROV

SEE NOTE 3

57.94°.01° PROV

SEE NOTE 3

57.94°.01° PROV

SEE NOTE 3

33.56°.01° PROV

SEE NOTE 3

33.56°.01° PROV

SEE NOTE 3

57.94°.01° PROV

SEE NOTE 3

57.94°.01° PROV

SEE NOTE 3

3/4 in

Ø0.002 A

SEE NOTE 1

File details come from the government source that posted it. Updated Oct 17, 2025.