R0000711 Rotary Base Assembly REV2

Assembly instructions for installation of main rotary drive ring

Difficulté

Hard Difficile

Durée

2 hour(s) heure(s)

R0000711_Rotary_Base_Assembly_Screenshot_2023-05-26_095708.png

Introduction

Detailed steps to correctly install rotary gear and journals

Checks for correct installation of oil feed system

Tolerance limits and requirements

Tools Required

Standard hex key set

0-25mm micrometer

Ring support blocks for assembly

Work Table

Mag Base and D.T.I

Hepco flat spanner

17mm socket

Torque Wrench

Parts required

D0006423-2mod Drive ring x 1

D0007651 Face plate x 1

B0000185 journal x 6

B0000186journal x 2

D0006503 Journal washer x 8

D00007692 wiper x 4

D0006521 x2

D0007693 x 2

D0007713 rotary ring cap x 1

Étape 1 - Quality Check Drive ring D0006423-2mod

Rotary drive ring needs checking before fitment.

1. Check teeth for burrs, damage and debris. Use compressed air to clean all areas
2. V edge should be checked for damage. Check entire circumference with fingers to identify any damage, lumps or high low spots
3. Check drive ring has been countersunk in the shown area

Étape 2 - Prepare Faceplate For assembly

Check that D0007651faceplate holes indicated (1) are countersunk the same as holes indicated (2 ). If not , countersink to correct

3. Clean all holes with compressed air

Thoroughly clean faceplate with solvent

Étape 3 - Inspect Journal washers D0006503

Journal washers should be inspected to ensure all washers supplied are within tolerance .

Thickness of washer should not exceed 0.05mm difference between all washers supplied. Report any that are incorrect via NCR system

Étape 4 - Inspect Journals

B0000185 and B0000186 journals should be cleaned with compressed air and checked for quality. Visually inspect v grooves of journals for and damage or irregularities

Étape 5 - Check drive ring wipers

D0007692 should be checked for correct machining. Holes indicated are vital to allow oil flow to ring system once assembled.

Étape 6 - Position face plate

Face plate should be positioned ready for assembly

1 Support blocks should be placed either end of faceplate

2 Ensure cut out is orientated correctly as per picture. This is the lifting access point.

3 Ensure correct end of faceplate is located at edge of workstation (end with 6 off M8 tapped holes on indicated face)

Étape 7 - Mount Journals

Mount journals as shown

...Do not use any adhesive at this point

Eccentric B0000185 journal 6 off

Concentric B0000186 journal 2 off

Space each journal with D0006503 journal washer

Fit Journal washer and nut to opposite side of mounted journal .

Add light tension to nut, as adjustment will be required

Étape 8 - Adjust Eccentric Journals to widest Position and position ring

Adjust eccentric journals to their widest point to allow ring gear to be fitted . See point 1 and 2 , these two points need to be as far apart as possible by rotating the eccentric journal with the flat hepco adjustment spanner .

...Always adjust the eccentric journals as shown in picture one. This is vital later on when micro adjustments are required to position and set journals, and knowing the correct orientation of travel is essential

Place hepco drive gear as shown inside journals

Étape 9 - WARNING

It is very easy to deform the journals and hepco ring with to much tension being applied to the journals. It is vital this doesn't happen as it can render parts useless for application.

Tension should be applied in small increments, and a D.T.I should be used on tension setting to monitor journal movement when adjusting and tightening.

Étape 10 - First stage journal positioning

The set the initial position of the drive ring the following steps are required

• Pull by hand hepco ring at indicated point (5) towards journals 3 and 4
• Whilst held in this position adjust journals 1 and 2 to engage onto the drive ring
• now the ring is held by the journals , adjust journals 1 and 2 to achieve contact on journals 1,2,3 and 4.

...Correct tension setting for a journal is as follows

- Journal will rotate when ring in rotated . - Journal can be skidded on ring when held by hand and ring is rotated

- no Rattle is present from movement of ring in a sideways direction

Étape 11 - Mount D.T.I and set position 1,5 and 6

D.T.I and mag base and stand should be mounted to rotary ring as shown

• move the D.T.I to the position in front of a concentric journal (1) and zero D.T.I.
• move to position 5 and adjust journal to read 0 .00mm on D.T.I
• repeat at position 6
• Check that all journals can still be skidded when held whilst ring is rotated

Étape 12 - Adjust position 4 and 7

• Move to position 4 and adjust journal to read 0.00mm on D.T.I
• Move to position 7 and repeat

Now it is vital to check the following .

Rotate ring and check all journals can be skidded when held by hand

If yes, Set position 3 and 8 by adjusting journal to read 0.00mm on D.T.I

If no, release pressure on journals 4,5,6 and 7 using D.T.I to gauge movement and reduce 0.00mm reading by 0.01mm

Repeat rotation and skid test, if journals now skid, adjust journals 3 and 8 to new D.T.I setting (-0.01mm)

If no, repeat and reduce pressure by an additional 0.01mm

Repeat these steps until all journals are adjusted to main rotary ring and all can be skidded when held tight on ring rotation.

Maximum tolerance for eccentricity is 0.05mm , so if journals have to be adjusted out of this tolerance, contact supervisor

Étape 13 - Finalise Journal tension

Now the rotary ring is mounted and concentric , journal nuts need to be torqued to the correct tension .

It is vital that the D.T.I is used to gauge if a journal moves when the nut is torqued to the correct setting .

Use the following sequence to set correctly

• Use flat hepco spanner to help stop rotation of journal when tightening
• Ensure D.T.I is in front of journal being tightened to indicate if movement occurs
• Use Torque wrench set to 33nm and tension journal nut.
• If the D.T.I indicates movement, it is vital the movement is corrected as this will affect journal contact and concentricity .
• Only move to the next journal when the worked on journal is 100% set and tight
• Mark each journal as tensioned when complete

Étape 14 - Quality Check

After tensioning is complete, recheck concentricity with D.T.I and also check journal tension.

Ring rotation should be smooth but with resistance

No high spots on rotation should be present.

Rotation should be quiet and even sounding

Supervisor check required at this point

Étape 15 - Fit lubricators

D0006521 blank wiper spacer 2 off

D0007693 oil access spacer 2 off

1 Fit D0007693 spacers with D0007692 wiper with m4 x 16 cap heads to area shown in picture with 1/4 bsp oil hole

2 Fit D0006521 blank wiper spacer with D0007692 wiper with m4 x 16 cap heads to area shown

Étape 16 - Clean and inspect rotary ring cover

D0007713 rotary ring inspection

1 Thoroughly clean with Fe10 solvent and then compressed air

2 Check indicated face for damage

3 Check indicated face for signs of damage

4 Add 1 off m6 x 120 studding (cut from stock) to indicated hole.

Note... Any of the m6 holes on this face can be used

Étape 17 - Mount Rotary ring cover to main assembly

1 Rotate hepco rotary ring until indicated holes align to allow the m6 stud to pass through hepco ring and face plate below

2 Fit rotary ring cover to main assembly using m6 studding to align as placed on top

3 Rotate assembly so stud is pointing up as shown

Étape 18 - Add Ring fixings

...12 off m6 x 30 countersunk unbrako bolts must be used

1 Add 2 off m6 counter sink bolts with loctite 243 to the indicated holes and lightly tension

2 Remove m6 studding and fit m6 countersink

3 Rotate ring 45 degrees to expose next set of 3 holes in inspection holes

Fit 3 more m6 countersink bolts

4 Rotate and repeat again until all 12 bolts are fitted and lightly tensioned.

5 Use a torque wrench to finalise bolts to 15nm .Methodically tighten each set of 3 bolts , rotating 45 degrees each time until all 12 bolts have been fully tensioned

...These bolts are critical. 1 loose bolt will cause the entire rotary ring to seize and not rotate to ensure all bolts are glued and tightened correctly

Étape 19 - Add thread locking

Loctite 290 Self wicking thread lock is used to lock journal nuts in place

Add one drop to each journal as indicated

Allow ring assembly to sit for 1 hour minimum to allow loctite to flow around threads before rotating assembly for next build sequence

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