1. Manuals
  2. Brands
  3. Meritor Manuals
  4. Industrial Equipment
  5. TM Series
  6. Service manual

Meritor TM Series Service Manual

Trailer axle
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
MAINTENANCE MANUAL NO. MM-1003
Meritor Inc. Trailer Axle
Service Manual
TM Series
Issued: 01/2012
Issue 02/2002

Advertisement

Table of Contents
loading

Related Manuals for Meritor TM Series

Summary of Contents for Meritor TM Series

  • Page 1 MAINTENANCE MANUAL NO. MM-1003 Meritor Inc. Trailer Axle Service Manual TM Series Issued: 01/2012 Issue 02/2002...
  • Page 2 MERITOR HVS. MERITOR HVS reserves the right to publish revisions at any time for technical or commercial purposes. Therefore all material contained in this manual is based on the latest information available at time of publication approval.

  • Page 3: Table Of Contents

    MST 3209 Die Nut Holder pg. 30 Section 5 - Drum Replacement pg. 55 MST 3210 Wheel Bolt Driver pg. 31 Drum removal pg. 55 MST 3211 Wheel Bolt Removal Tool pg. 31 Drum fitment Meritor HVS TM Series Axle...

  • Page 4: Section 1 - General Information

    General Information PG. 5 Service notes PG. 5 Safety instructions PG. 6 Warranty Meritor HVS TM Series Axle...
  • Page 5 120lbs (55kg). Use a lifting system, taking care not to damage the brake MERITOR HVS uses the following notations to warn the user of assembly. possible safety issues and to provide information that will prevent damage to equipment and components.
  • Page 6 Literature on Demand. The screen will display an index of publications by type. Warranty Procedure Should any MERITOR HVS equipment fitted to your trailer become unserviceable within the warranty period, contact the trailer manufacturer or MERITOR HVS Service Department who will advise on the appropriate action.
  • Page 7 Meritor HVS TM Series Axle...

  • Page 8: Section 2 - Introduction

    10 Rubber Sealing pg. 11 Exploded View - Hub assembly (Drumbrakes) pg. 12 Exploded View - Hub assembly (Discbrakes) pg. 13 Exploded View - Axle pg. 14 Identification Plate pg. 14 Identifiying the Axle Type Meritor HVS TM Series Axle...

  • Page 9: Axle Beams

    Axles can be ordered with anti-lock sensor equipment already installed and tested. DISC BRAKES The TM series axle is available with either DX 195/225 or ELSA 2 air disc brakes. For further information refer to the appropriate Meritor HVS Service Manual ;...

  • Page 10: Hubs

    SEALS All Meritor HVS axles contain unitized seals. These seals are suitable for either grease filled or oil filled operation. Low Loader axles use special high temperature synthetic seals to prevent leakage even when operating at elevated temperatures.

  • Page 11: Exploded View - Hub Assembly (Drumbrakes)

    Wheelcone - outer Gasket Wheelcone - inner Locknut Wheel B olt Lockwasher Hub Cap - oil filled Hub Nut Vent Plug (oil filled hub cap) Outer Bearing Inner Bearing Oil Seal (untised shown) Wheel Nut Meritor HVS TM Series Axle...

  • Page 12: Exploded View - Hub Assembly (Discbrakes)

    DESRIPTION ITEM DESCRIPTION Retaining Screw Wheel Nut (alternative) Hub Cap Retaing Screw - Rotor Gasket Hub Cap - odometer Locknut Retaining Screw Lockwasher Hub Nut Outer Bearing Inner Bearing Oil Seal (untised shown) Wheel Nut Meritor HVS TM Series Axle...

  • Page 13: Exploded View - Axle

    Exploded View - Axle Rotor Alternative ITEM DESRIPTION Axle Beam Brake Drum Wheel Bolt ABS Pole Wheel ABS Sensor Block ABS Sensor Grommet Rotor ABS Sensor Block ABS Sensor Pole Wheel (Later Rotors use an integral pole wheel) Meritor HVS TM Series Axle...

  • Page 14: Identifiying The Axle Type

    2 Introduction The Axle Identification Plate Every axle leaving the Meritor factory is fitted with an identification plate which contains all the information needed to ensure correct replacement parts are obtained. Identifying the Axle Type For Offset Hubs Anti-Lock Type...
  • Page 15 Meritor HVS TM Series Axle...

  • Page 16: Section 3 - Inspection & Maintenance

    17 Camshaft & Camshaft bearing inspection pg. 17 Brake drum inspection pg. 18 Lining inspection pg. 18 Push Rod Setting pg. 18 Rotor inspection pg. 20 ABS ring pg. 20 Rotor run out pg. 20 Skimming Meritor HVS TM Series Axle...
  • Page 17 3 Inspection & Maintenance Drumbrake Axles Refer to the appropriate Meritor hvs drumbarke service manual for detailed disc brake inspection procedures. Inspect Camshaft and Camshaft Bearings for Wear Place a lever between the camshaft and axle beam close to the cam head bearing and lever up and down to detect free movement (Fig.
  • Page 18 Inspect Brake Linings Disc Brake Axles The TM series axle is available with either DX 195/225 or ELSA 2 Do not disturb the brake lining surfaces if these show normal air disc brakes. For further information refer to the appropriate working appearance.
  • Page 19 Heavy heat crazing is cracks in the rotor's surface that extend radialy and have an individual length of up to 75%brake path width. Refinish or replace a rotor that has heavy heat crazing. Fig. 3.7 Maximum length = 75% of “A” Fig. 3.6 Meritor HVS TM Series Axle...
  • Page 20 6 Rotor Replacement or Section 7 ABS Component Replacement Skimming Resurfacing the rotor is permissible until the minimum thickness is reached 41mm. Refer to the appropriate Meritor service manual detailed below for full rotor wear parameters. MM 1147 Elsa 2 MM 1130 Surface finish after machining should be 5 microns maximum.
  • Page 21 Meritor HVS TM Series Axle...

  • Page 22: Hub Removal

    Hub Service pg. 24 Hub removal pg. 24 Fiting new Seals pg. 25 Bearings pg. 26 Hub refitment pg. 29 Converting from Grease to Oil Filled Hubs Meritor HVS TM Series Axle...
  • Page 23 Comprehensive Disc Brake instructions can be found in The TM axle fitted with Q or Z drum brakes features an inboard the appropriate Meritor HVS Service Manual detailed below; mounted brake drum. Thus requiring the hub assembly to be DX 195/225 MM 1147 removed for brake service.
  • Page 24 If necessary, remove the hub/drum assembly from the axle using a REMOVAL OF OIL SEAL AND INNER BEARING CONE hub puller (Meritor CVA part number MST 3206) together with The oil seal should be removed from the hub using an oil seal...
  • Page 25 • Roller and raceway damage or pitting Two types of seal may be found on Meritor HVS TM axles: • Metallic debris or flaking Bearing cup security - Ensure both bearing cups are well secured in the hub, by checking they are 1.
  • Page 26 Prior to re-assembling the hub onto the spindle, check the spindle for damage and remove any fretting or rust on bearing journals Apply 15 - 20gm of Meritor Hub Grease, Blue Lithium EP2 to the using medium grade emery cloth strip. Also ensure the inner cavity of the new seal, working the grease in evenly around the bearing abutment shoulder is clean and free from damage.
  • Page 27 B (Fig. 4.6). Apply 0.5 to 1 grams of Optimol 'Optimoly White Paste T' to the outboard bearing bore and spread evenly around the circumference. Refer to Section 11 Lubricants for the Meritor CVA Optimol part numbers. CAUTION: Only use the grease supplied with replacement components/kits, or that specified.
  • Page 28 Tighten the screws to the torque specified in Section 11. Fill to a level between the rings found on the hub cap window (380ml approx.). Fig. 4.10 Fig. 4.12 Fig. 4.11 Meritor HVS TM Series Axle...
  • Page 29 Standard Oil Filled ........... 21200624 Upper Hubodometer Oil Filled..........21204834 (Far) Gasket Oil Filled ............21021002 6. Fill to level marked in hub cap window with EP90 oil. 7. Readjust brakes. Lower (Near) Fig. 4.12 Meritor HVS TM Series Axle...

  • Page 30: Section 5 - Drum Replacement

    Drum Replacement pg. 31 Drum removal pg. 31 Drum fitment Meritor HVS TM Series Axle...
  • Page 31 5 Drum Replacement REPLACEMENT OF BRAKE DRUM NOTE: Detail of the Meritor CVA service tools refered to in this Invert the hub and locate the drum onto the hub spigot and rotate section can be found in Section 12 Service Tools.

  • Page 32: Section 6 - Rotor Replacement

    Rotor Replacement pg. 33 Rotor removal pg. 33 Rotor fitment Meritor HVS TM Series Axle...

  • Page 33: Rotor Removal

    Tighten the rotor securing nuts to the correct torque specified in Section 11 Torque Values Refit the disc brake assembly as described in Section 4 Hub Service & Replacement Refit the road wheel. Remove the axle safety stands and lower the vehicle to the ground. Meritor HVS TM Series Axle...

  • Page 34: Section 7 - Abs Component Replacement

    ABS Component Replacement pg. 35 Drumbrake axles pg. 36 Disc brake axles Meritor HVS TM Series Axle...

  • Page 35: Drumbrake Axles

    Locate the new pole wheel correctly onto the hub and drift into place using the Meritor CVA seal driver & Handle (MST 3202 & MST 3200) (Fig 7.1) ensuring the pole wheel bottoms out against the mounting shoulder on the hub.

  • Page 36: Disc Brake Axles

    Push the ABS tube into the rotor (Fig. 7.3). Using an LM oil seal driver (Meritor CVA part No. MST 3202), gently tap the ABS tube over its spigot on the hub (Fig. 7.4). Keep the pole wheel square at all times and do not use excessive force to avoid damage to the thin tube.
  • Page 37 FITTING AN ABS SENSOR Sensor Block Assembly: Fig. 7.6 Apply Meritor Brake Lubricant grease to the bush. Assemble the spring bush into the sensor mounting block. Push the sensor fully into the mounting block. Check when the hub and rotor has been fitted and that the sensor has been DISC &...

  • Page 38: Section 8 - Hub Odometer Replacement

    Hub Odometer Replacement pg. 39 Hub Odometer Fitment Meritor HVS TM Series Axle...

  • Page 39: Hubodometer Fitment

    It is advisable to assemble the hubodometer to the hub cap prior to fitting the hub cap to the axle. Where applicable remove the hub cap from te hub as desribed in Section 4 Hub Service & Replacement Meritor HVS TM Series Axle...

  • Page 40: Section 9 - Wheel Bolt Replacement

    Wheel Bolt Replacement pg. 41 Wheel Fixings pg. 41 Removing and Fitting Wheel Bolts Meritor HVS TM Series Axle...

  • Page 41: Wheel Fixings

    (REFER TO WHEEL BOLT CHART FIG. 9.3) seatings, (usually with L.H. and R.H. threads) Meritor HVS bolts are pressed into the hub and drum assembly and 2. DIN metric system with M22 threads and spherical seatings . retained by serrations and the press fit in the hub.
  • Page 42 Nut - 21226395 Nut - 21226395 Bolt - 21022167 Bolt - 21022167 Japanese (Twin Metric) Optional “Clean Thread” Bolts - R.H. 21211162 Closed End Nut (M22 x 1.5) L.H. 21211163 For Steel & Alloy wheels 21226397 Meritor HVS TM Series Axle...
  • Page 43 Meritor HVS TM Series Axle...
  • Page 44 Axle Installation & Welding Recommendations pg. 45 Stresses on Axle Beams pg. 46 Welding Affects on Axle Beams pg. 46 Recommended Location of Welds Meritor HVS TM Series Axle...

  • Page 45: Stresses On Axle Beams

    In general the 22,500 Series axle beam should be applied as a minimum rating. Meritor HVS Engineering should be contacted for written approval of application. Fig. 10.2 The length of the arrows “X” represents the amount of stress at a given point.

  • Page 46: Recommended Location Of Welds

    (5/16”) where practicable. It is important to remove all scale in fillet welds prior to painting. If this is not adhered to it will precipitate corrosion in these important weld areas. No Weld 3.75” (95mm) No Weld Fig. 10.3 Meritor HVS TM Series Axle...
  • Page 47 Meritor HVS TM Series Axle...

  • Page 48: Section 11 - Maintenance Schedules

    Maintenance Schedules, Torque Values, Lubricants & Grease Volumes pg. 49 Maintenance Schedules pg. 50 Torque Values pg. 50 Recommended Lubricants pg. 50 Hub & Bearing Grease Fill Volumes Meritor HVS TM Series Axle...
  • Page 49 Unusual ambient temperatures or adverse operating conditions (e.g. dusty atmospheres or severe gradients) will require more frequent service intervals. It is the responsibility of the vehicle operator to establish these intervals. Meritor HVS TM Series Axle...

  • Page 50: Recommended Lubricants

    Hub cap bolts - grease......11-15 Nm Meritor hub grease Blue Lithium EP2, Total Multis EP2, Shell Hub cap bolts - oil.
  • Page 51 Meritor HVS TM Series Axle...

  • Page 52: Section 12 - Service Tools

    54 MST 3206 Hub Puller pg. 54 MST 3207 Hub Spanner pg. 54 MST 3208 Die Nut pg. 54 MST 3209 Die Nut Holder pg. 55 MST 3210 Wheel Bolt Driver pg. 55 MST 3211 Wheel Bolt Removal Tool Meritor HVS TM Series Axle...
  • Page 53 MST 3201 - Bearing Driver & Handle MST 3202 - Oil Seal Driver & handle Fig. 12.1 Fig. 12.2 MST 3203 - Oil Seal Removal Tool MST 3205 - Adaptor (use with MST 3204 - Torque Wrench) Fig. 12.3 Fig. 12.4 Meritor HVS TM Series Axle...
  • Page 54 12 Service Tools MST 3206 - Hub Puller MST 3207 - Hub Nut Spanner Fig. 12.6 Fig. 12.5 MST 3208 - Die Nut MST 3209 - Die Nut Holder Fig. 12.7 Fig. 12.8 Meritor HVS TM Series Axle...
  • Page 55 12 Service Tools MST 3210 - Wheel Bolt Driver Fig. 12.9 MST 3211 - Wheel Bolt Removal Tool Fig. 12.10 Meritor HVS TM Series Axle...
  • Page 56 MERITOR.COM. Descriptions and specifications were in effect at the time of this publication and are subject to change without notice or liability. Meritor reserve the right to make design improvements, change or discontinue parts at any time. All rights Reserved ©2012 Meritor, Inc.

Table of Contents