WD CHASSIS AS BUILT DATA IDENTIFICATION OF COMPONENTS

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Sharon Lawrence
5 years ago
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1 WD HSSIS S UILT DT IDENTIFITION OF OMPONENTS Wheel centres 6" width inside frames 9.5 Frame thickness width outside frame width axle box guides 8.5 guide set back from outer frame width outer edges guides 9.25 width inner edges guides 2.25 axlebox / guide side clearance each side axlebox thrust face to leading/trailing 0.75 total axlebox thrust face to intermediate 0.25 total For the purposes of this rebuild the components will be identified as follows leading left 1 L right 1 R leading intermediate left 2 L right 2 R driving left L right R total sidefloat leading / trailing 0.7 total sidefloat intermediate 0.12 trailing intermediate left L right R Tyre profile leading/ trailing Tyre profile intermediate Tyre profile driving P1 P9 flangeless ylinder bore axis from frame ylinder centre to driving axle 185" cylinder centre to cylinder front 2.5 ylinder inclination 1 : 6 trailing left 5 L right 5 R hornguides and axlebox faces additionally labelled F-front - back UNLESS OTHERWISE SPEIFIED: DESRIPTION P.P.7.15 SIGNTURE DO NOT SLE DRWING WD data and identification of components DIMENSIONS RE IN MILLIMETERS PLTE S 1501 OILER PLTE STYS & RIVETS STEEL 107 OPPER TUES S 059 or STM 106 RRIED OUT TO PPROVED PROEDURE TO S EN287 OR SME IX. NDT S SPEIFIED MTERIL: WD FRME SSY.SLDPRT SLE:1:200 SHEET 1 OF 8

2 89. baseline setting point baseline setting point Telescope sight line set as baseline cylinder front to driving axle centre from drawing Telescope sightline set as baseline level with frames UNLESS OTHERWISE SPEIFIED: DESRIPTION P.P.7.15 SIGNTURE DO NOT SLE DRWING FRME SURVEY DIMENSIONS RE IN MILLIMETERS PLTE S 1501 OILER PLTE STYS & RIVETS STEEL 107 OPPER TUES S 059 or STM 106 RRIED OUT TO PPROVED PROEDURE TO S EN287 OR SME IX. NDT S SPEIFIED MTERIL: WD frame plate SSY.SLDPRT SLE:1:200 SHEET 2 OF 8

3 LIGNMENT METHOD. centreline or baseline has to be established in order to square and measure the positions of all of the components. Ideally this would be parallel to the cylinder bores. However the true axis of the cylinder is difficult to assertain with accuracy due to wear, rebore and repositioning of the cylinders at some time. 9 Grind left and right back guides square. 10 Set up side face grinding attachment. Grind faces adjacent to sightline 119mm from outside frame. * If frameplate is too distorted from baseline to achieve step 10 then adopt this sub routine. The accuracy of optical alignment equipment used has probably highlighted inaccuracies that wouldnt be seen with string and caliper methods. (string and caliper being perfectly satisfactory for the last 150 years) lso the inclined axis of the cylinders is not so useful for for squaring hornguides and axles. uilders setting marks are still visible and could be used, however there are 2 sets of marks for axle positions and the frames have been distorted with service, therefore it would be prudent to set up from first principles. Therefore the following method has been adopted: Squaring hornguides The hornguides have been replated and welded to bring back near to as built dimensions. 1 Level frames using engineers level 2 Set up line of sight through centreline of both cylinders. Measure distance of sightline from frame at relevant points. Draw out and analyse offsets.compute line that takes the best compromise of cylinder axis. 5 Erect microalignment telescope on wheel centre height level with frames. 6 Set sightline as baseline by offsets from frame computed in. 7 Erect fixed target at far end of frames on baseline for checking alignment throughout period of job. 8 Use auto reflection to set grinding rig on square plane to sightline on number axle position 1 using gauge No 2 from outside face of frame grind first face adjacent sightline. 2 measure and record distance of side face to baseline(sightline) grind second face to same distance from sight line. using gauge No 1 grind far faces. Guides are now square to centre and each other but displaced a known amount laterally from centreline. The axlebox thrust faces will have to be machined accordingly to bring wheelset on centre 11 Using Gauge Number 1 grind far faces to correct width apart. Side faces are now on centre and correct distance apart. 12 Re-erect grinding rig on number front guides. grind square. heck for parallel using internal micrometer. djust grinding rig if necessary. Finish by hand if necessary. 1 Repeat step 10 and 11 on front guides. The number axle guides are now finished square to frame axis, parallel and side faces correct distance apart and equidistant from the frame centreline. 1 Repeat previous steps on remaining sets of guides. UNLESS OTHERWISE SPEIFIED: DESRIPTION P.P Date SIGNTURE DO NOT SLE DRWING WD Set up procedure 1 DIMENSIONS RE IN MILLIMETERS PLTE S 1501 OILER PLTE STYS & RIVETS STEEL 107 OPPER TUES S 059 or STM 106 RRIED OUT TO PPROVED PROEDURE TO S EN287 OR SME IX. NDT S SPEIFIED MTERIL: WD FRME SSY.SLDPRT SLE:1:200 SHEET OF 8

4 Setting of axle positions setting driving axle,checking builders marks. 1 Set up dummy axle gauge No x on estimated No axle centre. Ensure level to frames. 2 Using dividers, and builders marks adjust to bring dummy to centre both sides. heck centre to front of cylinder 521mm both sides. Using auto reflection of sightline check squareness to base line. 5 ny dicrepancies, choose best position that is square to baseline, level and nearest to marks or measurements. 6 Lock No dummy axle in position or make setting gauge so that position can be accurately reinstated. 7 Measure and record distance from dummy axle to all four axlebox guides. ll other axles will be squared from No. 8 Set or manufacture gauge bar to : (wheelcentre- gauge bar dia) mm - 25mm= mm 9 Erect dummy axle gauge on subsequent axle positions level. 10 Using mm gauge adjust to be square with axle. 11 Measure and record all four axleox guide positions as for step 7 12 Repeat for all axles. The position of the axle centreline in relation to the re faced axlebox guides is now known. UNLESS OTHERWISE SPEIFIED: DESRIPTION P.P.7.15 SIGNTURE DO NOT SLE DRWING WD Set up procedure 2 DIMENSIONS RE IN MILLIMETERS PLTE S 1501 OILER PLTE STYS & RIVETS STEEL 107 OPPER TUES S 059 or STM 106 RRIED OUT TO PPROVED PROEDURE TO S EN287 OR SME IX. NDT S SPEIFIED MTERIL: SLE:1:200 SHEET OF 8

5 Setting of new axlebox faces to ensure axles are on centre Note. Only inside face and front inner face are to be used for datum surfaces 1 heck that all axlebox crowns fit satisfactorily to their relevant journals. lean any burrs from inside and front inner faces. 2 Erect axleboxes on their wheelsets. Measure front inner face to journal surface (IFJ). Measure journal diameter. dd (IFJ) to half journal diameter. xle centre in relation to front inner face ( F) is now known. ompute face positions from axle centres using data obtained from axlebox guides. Draw or sketch above as a record and to more easily understand relationship of faces to axle centres E.G. distance front inner (datum) face to front wear pad = (acf) minus guide to centre distance. The machine shop will set up square to inner face and use dimension from front inner face to give face position. 5 When front face position is established, then rear face is set to : distance between guides minus clearance. 6 Machine faces allowing 0.1mm clearance. Hand fit to ensure satisfactory fit. UNLESS OTHERWISE SPEIFIED: DESRIPTION P.P SIGNTURE DO NOT SLE DRWING WD set up DIMENSIONS RE IN MILLIMETERS PLTE S 1501 OILER PLTE STYS & RIVETS STEEL 107 OPPER TUES S 059 or STM 106 RRIED OUT TO PPROVED PROEDURE TO S EN287 OR SME IX. NDT S SPEIFIED MTERIL: SLE:1:200 SHEET 5 OF 8

6 Establishing correct lateral position of wheelsets 1 Erect axleboxes on their wheelsets. Set " apart using gauge on inside faces. 2 Using gauge No set axleboxes into correct running positions. uild with weld or machine back axlebox inner and outer guide edges as necessary. Re metal or machine thrust faces to bring into correct running positions. When correctly set clearances will be as follows: all axle boxes outside guide to axlebox 1.5mm inside 1.5mm minimum axles 1,5. each side 0.125" axles 2,,. " " note this dimension has no effect on running position of wheels but if excessive will allow spring to strike horntie DESRIPTION P.P Date SIGNTURE DO NOT SLE DRWING UNLESS OTHERWISE SPEIFIED: DIMENSIONS RE IN MILLIMETERS PLTE S 1501 OILER PLTE STYS & RIVETS STEEL 107 OPPER TUES S 059 or STM 106 RRIED OUT TO PPROVED PROEDURE TO S EN287 OR SME IX. NDT S SPEIFIED MTERIL: SLE:1:200 SHEET 6 OF 8

7 GUGE GUGE NOTE THESE GUGES RE SIZED FOR DIMENSIONS S UILT. IF HORNGUIDES OR XLEOXES DEVITE FROM S UILT DIMENSIONS THEN DIFFERENES MUST E PPLIED GUGE 5 25 ENTRE MRK SET TO WIDTH OF hornguide DETIL GUGE dummy axlebar SLE 1 : 1 DESRIPTION P.P SIGNTURE DO NOT SLE DRWING GUGES UNLESS OTHERWISE SPEIFIED: DIMENSIONS RE IN MILLIMETERS PLTE S 1501 OILER PLTE STYS & RIVETS STEEL 107 OPPER TUES S 059 or STM 106 RRIED OUT TO PPROVED PROEDURE TO S EN287 OR SME IX. NDT S SPEIFIED MTERIL: GUGE 1 XLEOX GUIDE POSITION R SLE:1:200 SHEET 7 OF 8

are not on centre 1.59 1.59 1.59 1.59 211.

20 xle 1 wheelset shown in as built position.

9 thrust face clearance DESRIPTION P.P 6.7.

UNLESS OTHERWISE SPEIFIED: DIMENSIONS RE IN

RIVETS 018 15 STEEL 107 OPPER TUES S 059 or

8 these dimensions must be adjusted if guides are not on centre xle 1 wheelset shown in as built position. Wheel back to back as measured. 7.9 thrust face clearance DESRIPTION P.P SIGNTURE DO NOT SLE DRWING Gauge No set up UNLESS OTHERWISE SPEIFIED: DIMENSIONS RE IN MILLIMETERS PLTE S 1501 OILER PLTE STYS & RIVETS STEEL 107 OPPER TUES S 059 or STM 106 RRIED OUT TO PPROVED PROEDURE TO S EN287 OR SME IX. NDT S SPEIFIED MTERIL: WHEELSET -1- XLEOX GUIDES SSY SLE:1:200 SHEET 8 OF 8

CQ Tilting Pad Thrust Bearings

CQ Tilting Pad Thrust Bearings Installation and Maintenance Instructions 1. Introduction The following notes provide installation and assembly instructions for Waukesha Bearings CQ tilting pad thrust bearings.