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Meritor MM-0164 Maintenance Manual

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Maintenance Manual MM-0164
Wheel end assembly
Hub Reduction 3 - 4 planets
- Wheel end with unitized bearing
- Traditional wheel end
Revised 03-2019

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Summary of Contents for Meritor MM-0164

  • Page 1 Maintenance Manual MM-0164 Wheel end assembly Hub Reduction 3 - 4 planets - Wheel end with unitized bearing - Traditional wheel end Revised 03-2019...
  • Page 2 You must use special tools, when required, to avoid serious personal injury and damage to components. Meritor uses the following notations to alert the user of possible safety issues and to provide information that will help to prevent damage to equipment and components.

  • Page 3: Table Of Contents

    1 - Description Exploded view Cross-sectional view Parts list Description Tightening torques Lubricants 2 - Wheel end disassembly Wheel end disassembly Checking and replacing parts 3 - Wheel end assembly Wheel end assembly Hub assembly Final Clearance calculation Meritor Wheel end assembly...
  • Page 4 Further information on warranty conditions may be obtained replacement of wheel end parts or components. It also refers to directly from the manufacturer or by referring to the Meritor web the determining of the cause of a malfunction in order to restore site www.meritor.com...
  • Page 5 Part 1 Hub reduction with 3 - 4 planets: Wheel end with unitized bearing Exploded view Parts list Cross-sectional view Parts list Description Tightening torques Lubricants Meritor Wheel end assembly...

  • Page 6: Hub Reduction With 3 - 4 Planets

    1 Part 1 - Hub reduction with 3 - 4 planets Wheel end with unitized bearing Exploded view Old version New version: 5.69375-02 Old version. No more applied Meritor Wheel end assembly...

  • Page 7: Parts List

    Bearing spindle Thrust washer Planet gear Spacer ring Needle rollers Thrust washer Circlip Retaining ring - Circlips - Snap ring Drive shaft Spindle O-ring Magnetic washer Star lock push on fastener Locking Screw Inner hub seal Meritor Wheel end assembly...
  • Page 8 1 Part 1 - Hub reduction with 3 - 4 planets Wheel end with unitized bearing Cross sectional vew - (Hub Nut Star version) Solid / Hollow shaft Meritor Wheel end assembly...

  • Page 9: Parts List

    Thrust washer Spring washers O-ring Bearing spindle Thrust washer Planet gear Spacer ring Needle rollers Thrust washer Circlip Retaining ring Drive shaft Spindle O-ring Magnet Retaining clip Adapter Flange screw Bolt socket head screw Inner hub seal Meritor Wheel end assembly...

  • Page 10: Description

    Ratio formula = 1+(Z Ring gear / Z Sun teeth), fig. 1.4 The hub reduction ration is 3.46:1 or 3.33:1 Ratio (3.46:1) - 3 or 4 planets 1+(64/26)=3.46 Planets Ratio (3.33:1) - 3 or 4 planets 1+(63/27)=3.33 gears Fig. 1.4 Meritor Wheel end assembly...

  • Page 11: Description

    Meritor Web site at www.meritor.com (technical library - manuals). WARNING Fig. 1.5a Only original Meritor spare parts should be used. Use of non- recommended lubricants will adversely affect performance and service life. Use of non-original parts could seriously affect wheel end assembly performance.

  • Page 12: Hub Reduction Magnets

    Hollow shaft Solid shaft Top up oil until starts Top up oil until starts to come out of filler hole to come out Oil level of filler hole Oil level indicator indicator Fig. 1.8 Fig. 1.9 Meritor Wheel end assembly...

  • Page 13: Disassembly

    Part 1 Wheel end disassembly Disassembly Star hub nut dismantling Checking and replacing parts Meritor Wheel end assembly...
  • Page 14 Tighten in dedicated holes the tool’s screws equally and simultaneously, and avoid using excessive force as this could damage the drum. Fig. 2.4 A soft-faced mallet may be used on the drum to loosen and ease withdraw. Fig. 2.2 Fig. 2.3 Fig. 2.4 Meritor Wheel end assembly...
  • Page 15 Remove the retaining ring sun gear and spring washers from axle shaft - Fig. 2.6 Remove the 2 sunk head screws M10X25 - Fig. 2.7 Remove the hub casing group and remove axle shaft - Fig. 2.8 Fig. 2.7 Fig. 2.8 Meritor Wheel end assembly...
  • Page 16 2 Part 1 - Hub reduction with 3 - 4 planets Wheel end with unitized bearing The current Meritor wheel end assembly is based on with star nut solution. Star Nut NOTE : A high torque is required to shear the staking points and a torque multiplication device should be employed.
  • Page 17 Do not reuse this seal. Hub bearings are pre-adjusted cartridge type and cannot be individually replaced. In case of non serviceability a replacement service exchange hub should be refitted. Fig. 2.13 O Ring Fig. 2.14 Fig. 2.15 Meritor Wheel end assembly...
  • Page 18 Do not reuse these O-Ring seals as old seals cannot protect against oil leaks when rebuilt. Remove the ring gear locking ring (internal circlip), and separate the ring gear from its carrier - Fig. 2.19 Fig. 2.17 Fig. 2.18 Fig. 2.19 Meritor Wheel end assembly...
  • Page 19 Fit the retaining circlips on the journal pins. Fig. 2.22 If damaged: remove the old inner seal and lubricate and press into position by hand a new inner hub seal. Fig. 2.23 Fig. 2.21 Fig. 2.22 Fig. 2.23 Meritor Wheel end assembly...
  • Page 20 Meritor Wheel end assembly...

  • Page 21: 21 3 - Wheel End Assembly

    Part 1 Wheel end assembly Seal Assembly Hub asssembly Final Clearance calculation Meritor Wheel end assembly...

  • Page 22: Seal Assembly

    Press the seal into the spindle bore. Fig. 3.3 The tool (through its shape) drives the seal into the spindle, leaving the proper seal protrusion, avoiding any seal distortion. Fig. 3.4 Fig. 3.2 Protrusion Fig. 3.3 Fig. 3.4 Meritor Wheel end assembly...
  • Page 23 Refit the hub assembly. Thoroughly grease the spindle bearing journals and locate the hub in position on the spindle. Locate the ring gear carrier into position. Fig. 3.6 Assembly ring gear group. Fig. 3.7 Fig. 3.6 Fig. 3.7 Meritor Wheel end assembly...
  • Page 24 Original nut cannot be used because the anti-friction coating on the hub nut face may be damaged. Fig. 3.8 Tighten hub nut to: 150 ± 30 Nm Rotate hub 20 revolutions. Tighten hub nut to: 1200 ± 120 Nm Fig. 3.9 Meritor Wheel end assembly...
  • Page 25 Fig. 3.10 Do not clamp the nut flange under the head of the locking screw. Tighten screw to 45 ± 5 Nm. WARNING: see fig. 3.11 Fig. 3.11 Meritor Wheel end assembly...
  • Page 26 Retain the hub casing in position with two socket bolts using thread locking compound (Loctite 243). Fig. 3.13b Tighten bolts to a torque of: 40 ± 10 Nm - Fig. 3.14 Fig. 3.12 Fig. 3.13a Fig. 3.13b Fig. 3.14 Meritor Wheel end assembly...
  • Page 27 Fig. 3.16 completely pressed Dim. A Record Dimension A (mm) - Fig. 3.17a Fig. 3.17a Pull out 10mm Pull out the sun gear approximately 10 mm. Fig. 3.17b Face Hub Casing Sun Gear Pull out Fig. 3.17b Meritor Wheel end assembly...
  • Page 28 Dim. B Refit the magnetic washer over the grooved pin and retain in position with a new star lock fastener. Fig. 3.20 Fig. 3.18 Debris Magnet in Hub Reduction Unit Washers Fig. 3.19 Fig. 3.20 Meritor Wheel end assembly...
  • Page 29 : with new hub cap there is an oil level line that aligns with the bottom of the filler hole. When line is horizontal it is an indication of permitted oil capacity. Fig. 3.22 Hollow shaft Solid shaft Fig. 3.23 Fig. 3.24 Meritor Wheel end assembly...
  • Page 30 Meritor Wheel end assembly...

  • Page 31: Traditional Wheel End With 3-4 Planets: Spindle Fitted With Interference

    Part 2 Traditional wheel end with 3-4 planets: Spindle fitted with interference Exploded view Cross-sectional view Parts list Description Tightening torques Lubricants Meritor Wheel end assembly...
  • Page 32 1 Part 2 - Traditional wheel end with 3-4 planets Spindle fitted with interference Exploded view Meritor Wheel end assembly...

  • Page 33: Cross-Sectional View

    1 Part 2 - Traditional wheel end with 3-4 planets Spindle fitted with interference Cross-sectional view Meritor Wheel end assembly...

  • Page 34: Parts List

    Bearing spindle O-ring Retainer clip Sun gear Spring washer Thrust washer Retainer clip Washers Magnet Retain clip Hub cover screw Plug - Magnet Gasket / copper washer Cover Screw Abs bracket (optional) Bolts (optional) Sensor assy (optional) Meritor Wheel end assembly...
  • Page 35 Axle shaft The hub reduction ration is 3.46:1 or 3.33:1 Ratio (3.46:1) - 3 or 4 planets 1+(64/26)=3.46 Ratio (3.33:1) - 3 or 4 planets 1+(63/27)=3.33 Fig. 1.2 Sun teeth Planets gears Fig. 1.3 Fig. 1.4 Meritor Wheel end assembly...

  • Page 36: Description

    Meritor Web site at www.meritor.com (technical library - manuals). WARNING Only original Meritor spare parts should be used. Use of non- recommended lubricants will adversely affect performance and service life. Use of non-original parts could seriously affect wheel end assembly performance.
  • Page 37 Spindle fitted with interference Description Hub reduction Magnet location Fig. 1.6 Filler plug Solid shaft Top up oil until starts to come out Oil level of filler hole indicator Hub reduction Magnet location Fig. 1.7 Fig. 1.8 Meritor Wheel end assembly...
  • Page 38 Meritor Wheel end assembly...

  • Page 39: Wheel End Disassembly Wheel End Disassembly

    Part 2 Wheel end disassembly Wheel end disassembly Checking and replacing parts Meritor Wheel end assembly...
  • Page 40 Tighten in dedicated holes the tool’s screws equally and simultaneously, and avoid using excessive force as this could damage the drum. Fig. 2.4 A soft-faced mallet may be used on the drum to loosen and ease withdraw. Fig. 2.2 Fig. 2.3 Fig.2.4 Meritor Wheel end assembly...
  • Page 41 Remove the retaining ring sun gear and spring washers from axle shaft - Fig. 2.6 Remove the 2 sunk head screws M10X25 - Fig. 2.7 Remove the hub casing group and remove axle shaft - Fig. 2.8 Fig. 2.7 Fig. 2.8 Meritor Wheel end assembly...
  • Page 42 - Fig. 2.10 3. Remove the ring gear group. - Fig. 2.11 NOTE : If available, use a lifting tool. WARNING: Do not damage the thread of the wheel end spindle. Fig. 2.9 Fig. 2.10 Fig. 2.11 Meritor Wheel end assembly...
  • Page 43 : If available, use a lifting tool. WARNING: Fig. 2.12 Do not damage the thread of the wheel end spindle WARNING: If the green o-ring has a mark, discard and scrap it. Fig. 2.13 O Ring Fig. 2.14 Meritor Wheel end assembly...
  • Page 44 10. 7. Disconnect ABS sensor cable completely and remove it. 8. Untighten the brackets. Fig. 2.15 9. If needed, replace the ABS sensor. Figg. 2.16 - 2.17 Fig. 2.15 Fig. 2.16 Fig. 2.17 Meritor Wheel end assembly...
  • Page 45 Do not reuse these O-Ring seals as old seals cannot protect against oil leaks when rebuilt. Remove the ring gear locking ring (internal circlip), and separate the ring gear from its carrier - Fig. 2.21 Fig. 2.19 Fig. 2.20 Fig. 2.21 Meritor Wheel end assembly...
  • Page 46 Fit the retaining circlips on the journal pins. Fig. 2.24 If damaged: remove the old inner seal and lubricate and press into position by hand a new inner hub seal. Fig.2.25 Fig. 2.23 Fig. 2.24 Fig. 2.25 Meritor Wheel end assembly...
  • Page 47 2 Part 2 - Traditional wheel end with 3-4 planets Spindle fitted with interference Part 2 Wheel end assembly Wheel end assembly Hub assembly Final Clearance calculation Meritor Wheel end assembly...
  • Page 48 Do not damage the thread of the wheel end spindle. 3. Fit the external wheel bearing. Fig.3.3 4. Locate the ring gear carrier into position. Assembly ring gear group. - Fig. 3.4 - 3.5 Fig. 3.2 Fig. 3.3 Fig. 3.4 Meritor Wheel end assembly...
  • Page 49 : If the torque is outside the spec, return at the previous point and readjust it. 6. When the wheel end torque is in the specification use a staking tool to stake nut lip into keyway in spindle. Fig. 3.8 Fig. 3.6 Fig. 3.7 Fig. 3.8 Meritor Wheel end assembly...
  • Page 50 Retain the hub casing in position with two socket bolts using thread locking compound (Loctite 243). Fig. 3.12 Tighten bolts to a torque of: 40 ± 10 Nm - Fig. 3.13 Fig. 3.10 Fig. 3.12 Fig. 3.11 Fig. 3.13 Meritor Wheel end assembly...
  • Page 51 Fig. 3.15 completely pressed Dim. A Record Dimension A (mm) - Fig. 3.16a Fig. 3.16a Pull out 10mm Pull out the sun gear approximately 10 mm. Fig. 3.16b Face Hub Casing Sun Gear Pull out Fig. 3.16b Meritor Wheel end assembly...

  • Page 52: Final Clearance Calculation

    Dim. B Refit the magnetic washer over the grooved pin and retain in position with a new star lock fastener. Fig. 3.19 Fig. 3.17 Debris Magnet in Hub Reduction Unit Washers Fig. 3.18 Fig. 3.19 Meritor Wheel end assembly...
  • Page 53 : with new hub cap there is an oil level line that aligns with the bottom of the filler hole. When the line is horizontal this indicates the allowed oil capacity. Fig. 3.21 Solid shaft Fig. 3.22 Meritor Wheel end assembly...
  • Page 54 Meritor Wheel end assembly...
  • Page 55 Part 3 Traditional wheel end with 3-4 planets: Spindle fitted with screws Exploded view Cross-sectional view Parts list Description Tightening torques Lubricants Meritor Wheel end assembly...
  • Page 56 1 Part 3 - Traditional wheel end with 3-4 planets Spindle fitted with screws Exploded view Meritor Wheel end assembly...
  • Page 57 1 Part 3 - Traditional wheel end with 3-4 planets Spindle fitted with screws Section view Meritor Wheel end assembly...
  • Page 58 Bearing spindle O-ring Retainer clip Sun gear Spring washer Thrust washer Retainer clip Washers Magnet Retain clip Hub cover screw Plug - Magnet Gasket / copper washer Cover Screw Abs bracket (optional) Bolts (optional) Sensor assy (optional) Meritor Wheel end assembly...
  • Page 59 Ratio formula = 1+(Z Ring gear / Z Sun teeth), fig. 1.4 The hub reduction ration is 3.46:1 or 3.33:1 Ratio (3.46:1) - 3 or 4 planets 1+(64/26)=3.46 Ratio (3.33:1) - 3 or 4 planets 1+(63/27)=3.33 Fig.1.2 Sun teeth Planets gears Fig. 1.3 Fig. 1.4 Meritor Wheel end assembly...
  • Page 60 Meritor Web site at www.meritor.com (Technical library - manuals). WARNING Only original Meritor spare parts should be used. Use of non- recommended lubricants will adversely affect performance and service life. Use of non-original parts could seriously affect wheel end assembly performance.
  • Page 61 1 Part 3 - Traditional wheel end with 3-4 planets Spindle fitted with screws Description Lubricant Filler plug Solid shaft Top up oil until starts to come out of filler hole Oil level indicator Hub reduction Magnet location Fig. 1.6 Fig. 1.7 Meritor Wheel end assembly...
  • Page 62 Meritor Wheel end assembly...
  • Page 63 Part 3 Wheel end disassembly Wheel end disassembly Meritor Wheel end assembly...
  • Page 64 Tighten in dedicated holes the tool’s screws equally and simultaneously, and avoid using excessive force as this could damage the drum. Fig. 2.4 A soft-faced mallet may be used on the drum to loosen and ease withdraw. Fig. 2.2 Fig. 2.3 Fig. 2.4 Meritor Wheel end assembly...
  • Page 65 Remove the retaining ring sun gear and spring washers from axle shaft - Fig. 2.6 Remove the 2 sunk head screws M10X25 - Fig. 2.7 Remove the hub casing group and remove axle shaft - Fig. 2.8 Fig. 2.7 Fig. 2.8 Meritor Wheel end assembly...
  • Page 66 Do not damage the thread of the wheel end spindle. 4. Remove the external wheel bearing. Fig. 2.12 Fig. 2.9 WARNING: Do not damage the thread of the wheel end spindle. Fig. 2.10 Fig. 2.12 Fig. 2.11 Meritor Wheel end assembly...
  • Page 67 Fig. 2.13 7. Disconnect ABS sensor cable completely and remove it. 8. Untighten the brackets. Fig. 2.15 O Ring 9. If needed, replace the ABS sensor. Figg. 2.16-2.17 Fig. 2.14 Fig. 2.16 Fig. 2.15 Fig. 2.17 Meritor Wheel end assembly...
  • Page 68 - Fig. 2.20 NOTE: For further instructions on the brake setting, adjustment and operation – refer to service manual MM0267 Fig. 2.19 Fig. 2.20 Meritor Wheel end assembly...
  • Page 69 To avoid any problems on the thread it is advised not to use any electric or pneumatic screwdrivers. Fig. 2.21 If the green o-ring has a mark, discard and scrap it. Fig. 2.22 Fig. 2.24 Fig. 2.23 Meritor Wheel end assembly...
  • Page 70 Figg. 2.25 and 2.26 WARNING: During the spindle disassembly the spacer may fall out. To prevent any injury Meritor suggests to lock the spacer securely with a screw and nut to prevent it from coming out of the housing and falling accidentally.
  • Page 71 Part 3 Wheel end assembly Wheel end assembly Hub assembly Final Clearance calculation Meritor Wheel end assembly...
  • Page 72 3. Apply grease on the joint surface. - Fig. 3.3 Fig. 3.1 4. Put the spacer (if needed according to the axle variant) in position - Fig. 3.4 WARNING: Do not damage the o-ring present in the spacer. Fig. 3.2 Fig. 3.3 Fig. 3.4 Meritor Wheel end assembly...
  • Page 73 7. Put the wheel end in the position. - Fig. 3.7 Fig. 3.5 WARNING: Do not damage the o-ring present in the spacer. 8. Put the brake in position. - Fig. 3.8 Fig. 3.6 Fig. 3.7 Fig. 3.8 Meritor Wheel end assembly...
  • Page 74 - Fig. 3.12 13. If needed, adjust the clevis position on the air chamber pushrod but do not close the new screw yet. - Fig. 3.13 Fig. 3.9 Fig. 3.12 Fig. 3.10 Fig. 3.11 Fig. 3.13 Meritor Wheel end assembly...
  • Page 75 48 ± 8 Nm. - Fig. 3.17 18. Refit a new outer O-ring on the hub using grease as lubricant. Fig. 3.14 Fig. 3.18 Fig. 3.15 Fig. 3.17 O Ring Fig. 3.16 Fig. 3.18 Meritor Wheel end assembly...
  • Page 76 Fig. 3.19 NOTE : If available, use a lifting tool. WARNING: Do not damage the thread of the wheel end spindle. 24. Fit the external wheel bearing. Fig. 3.23 Fig. 3.20 Fig. 3.22 Fig. 3.21 Fig. 3.23 Meritor Wheel end assembly...
  • Page 77 : If the torque is outside the spec, return at the previous point and readjust it. 27. When the wheel end torque is in the specification use a staking tool to stake nut lip into keyway in spindle. Fig. 3.25 Fig. 3.27 Fig. 3.27 Fig. 3.26 Meritor Wheel end assembly...
  • Page 78 Retain the hub casing in position with two socket bolts using thread locking compound (Loctite 243). Fig. 3.31 Tighten bolts to a torque of: 40 ± 10 Nm - Fig. 3.32 Fig. 3.29 Fig. 3.31 Fig. 3.30 Fig. 3.32 Meritor Wheel end assembly...
  • Page 79 Fig. 3.34 completely pressed Dim. A Record Dimension A (mm) - Fig. 3.35a Fig. 3.35a Pull out 10mm Pull out the sun gear approximately 10 mm. Fig. 3.35b Face Hub Casing Sun Gear Pull out Fig. 3.35b Meritor Wheel end assembly...
  • Page 80 Dim. B Refit the magnetic washer over the grooved pin and retain in position with a new star lock fastener. Fig. 3.38 Fig. 3.36 Debris Magnet in Hub Reduction Unit Washers Fig. 3.37 Fig. 3.38 Meritor Wheel end assembly...
  • Page 81 : with new hub cap there is an oil level line that aligns with the bottom of the filler hole. When line is horizontal it is an indication of permitted oil capacity. Fig. 3.40 Solid shaft Fig. 3.41 Meritor Wheel end assembly...
  • Page 82 Meritor Wheel end assembly...

  • Page 83: Troubleshooting And Service Tools Troubleshooting

    Troubleshooting and Service Tools Troubleshooting Service tools Meritor Wheel end assembly...
  • Page 84 Slackening Check: Check bearings for integrity. clearance - hub nut Ensure hub nut is correctly tightened. Ensure correct tighten and locked by screw or staking. Abnormal ABS Abnormal impulses Follow instructions from sensor signal vehicle manufacturer Meritor Wheel end assembly...
  • Page 85 4 Troubleshooting and Service Tools Mounting tool Meritor Wheel end assembly...
  • Page 86 Meritor HVS Cameri S.p.A. Strada Prov. Cameri-Bellinzago km. 5 Printed in Italy 28062 Cameri (NO), Italy Tel.: +39 0321 4231 Revised 3/2019 Fax: +39 0321 423424 www.meritor.com © Meritor 2012 M-graph - MM0164...

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