DANA Spicer Torque-Hub W3B Series Service Manual
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DANA Spicer Torque-Hub W3B Series Service Manual

Planetary final drive
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Torque-Hub
Planetary Final Drive
W3B/W3C Series Service Manual
Rev 03/07/13
1

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Summary of Contents for DANA Spicer Torque-Hub W3B Series

  • Page 1 ® Torque-Hub Planetary Final Drive W3B/W3C Series Service Manual Rev 03/07/13...
  • Page 2 Fairfield Manufacturing Co. Inc., Lafayette, IN, is now a part of Dana Incorporated While every precaution has been taken in the preparation of this document, Fairfield Manufacturing Co. Inc. assumes no liability with respect to the use of the documentation described herein, or for any act or omission of Fairfield Manufacturing ®...

  • Page 3: Table Of Contents

    Planetary Final Drive Service Manual Content Introduction Roll and Leak Test Tightening and Torquing Bolts Lubrication Information Disassembly Instructions Main Disassembly Carrier Disassembly Coupling Disassembly Input Shaft Disassembly Cover Disassembly Housing-Spindle Disassembly Assembly Instructions Cover Subassembly Carrier Subassembly Housing Spindle Subassembly Coupling Subassembly Input Shaft Subassembly Main Assembly...

  • Page 4: Introduction

    Planetary Final Drive Service Manual Introduction This manual is a step-by-step guide to the disassembly and ® assembly of the W3C/W3B Series Torque-Hub units. It is designed for the customer or mechanic who is repairing this particular ® Torque-Hub model. Users of this manual should note that each part mentioned is followed by an identification number enclosed in parentheses.

  • Page 5: Roll And Leak Test

    Planetary Final Drive Service Manual Roll and Leak Test ® Torque-Hub units should always be roll and leak tested before disassembly (if possible) and after assembly to make sure the unit’s gears, bearings, and seals are working properly. The following information briefly outlines what to look for when performing these tests.
  • Page 6 The Leak Test The purpose of a leak test is to make sure the unit is airtight. To perform a leak test use the leak test fixture from the table below. If the tool is not available, the gearbox must be sealed to perform the test.

  • Page 7: Tightening And Torquing Bolts

    Planetary Final Drive Service Manual Tightening and Torquing Bolts If an air impact wrench is used to tighten bolts, extreme care should be taken to ensure the bolts are not tightened beyond their specified torque. The following steps describe how to tighten and torque bolts or socket head cap screws in a bolt circle.

  • Page 8: Lubrication Information

    Planetary Final Drive Service Manual Lubrication Information ® General Properties: The lubricant used in most Torque-Hub drives should be petroleum based gear fluid containing anti-oxidation, anti-foaming and extreme pressure additives. The lubricant should have a minimum viscosity index of 95 cst and maintain a minimum viscosity of 40 cst under normal operating conditions.
  • Page 9 ® Maintenance Oil amounts for each series of Torque-Hub drives are indicated in the appropriate series literature. An initial oil change should be made after the first 50 hours of operation. Subsequent oil changes should be made at 1,000 hour intervals or annually, whichever comes first.
  • Page 10 THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 11 DISASSEMBLY...

  • Page 12: Main Disassembly

    Planetary Final Drive Service Manual Main Disassembly Perform roll check and leak check prior to disassembling the unit. Remove the magnetic Pipe Plug (6H) from Cover Plate (6A) and drain the oil out of the gearbox. NOTE: Record the condition and volume of the oil. Remove eight of Bolts (17) followed by four of Bolts (18) from Cover Subassembly.
  • Page 13 NOTE: Figure 1 refers to 30, 35, 50, 64 & 73 : 1 Ratios NOTE: Figure 2 refers to 18, 24, 31 & 43 : 1 Ratios Continued on Next Page...
  • Page 14 If applicable remove Spacer (14) from the Input Shaft (11) Remove the Sun Gear (13). Lift out the Carrier Subassembly from the unit. Remove the Input Spacer (12) from the unit. Remove two Thrust Spacers (15) and Thrust Bearing (16) from the Internal Gear (2). Remove Internal Gear (2).from the unit.

  • Page 15: Carrier Disassembly

    Planetary Final Drive Service Manual Carrier Disassembly Drive Planet Shaft (3E) out of the carrier pin holes; forcing the Roll Pin (3G) to sheer off. Hold on to the Planet Gear (3F) and push the Planet Shaft (3E) out of the Carrier (3A). The Thrust Washers (3B and 3H) will slide off the shaft as it is removed.

  • Page 16: Coupling Disassembly

    Planetary Final Drive Service Manual Coupling Disassembly CAUTION: Safety glasses must be worn during this next steps. If necessary, remove Internal Retaining Ring (20).from the groove of Coupling (19). If necessary, remove External Retaining Ring (21) from the groove of Coupling (19). This concludes the Coupling Disassembly.

  • Page 17: Input Shaft Disassembly

    Planetary Final Drive Service Manual Input Shaft Disassembly CAUTION: Safety glasses must be worn during this next steps. If necessary, remove External Retaining Ring (10) from the groove of the Input Shaft (11). This concludes the Input Shaft Disassembly.

  • Page 18: Cover Disassembly

    Planetary Final Drive Service Manual Cover Disassembly Remove the O-Ring (5) from groove in Cover (6A) and Discard O-Ring. Remove two Thrust Washers (15) and Thrust Bearing (16) from Cover (6A). Remove two Hex Bolts (6C) from Disengage Cap (6D), if required. Remove the Disengage Cap (6D) from the Cover Cap (6B).

  • Page 19: Housing-Spindle Disassembly

    Planetary Final Drive Service Manual Housing-Spindle Disassembly CAUTION: Safety glasses must be worn during these next steps. Remove Internal Retaining Ring (9) from the groove of the Spindle (1A). Remove Thrust Washer (7) from the spindle (1A). Remove Spring (8) from the Spindle (1A). Remove Thrust Washer (7) from the Spindle (1A).
  • Page 20 Remove the O-Ring (5) from the Housing (1G) and discard it. CAUTION: Safety glasses must be worn during these next steps. Remove Retaining Ring (1I) from the groove of Spindle (1A). Remove Thrust Washer (1H) from the Spindle (1A). Remove two Pipe Plugs (1J) from the Housing (1G). Turn the unit over and carefully place the unit on a support base until the Spindle (1A) post rests on it.
  • Page 21 Lift the Spindle (1A) out of the Housing (1G). If required, remove Boot Seal (1Q) from the Housing (1G) Remove Lip Seal (1B) from the Housing (1G) Remove the Bearing Cone (1D) from the Bearing Cup (1C). Using a hammer and punch drive the inboard Bearing Cup (1E) out of the Housing (1G). Be careful not to damage the counter bore in the housing.
  • Page 22 THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 23 ASSEMBLY...

  • Page 24: Cover Subassembly

    Planetary Final Drive Service Manual Cover Subassembly Screw Pipe Plug (6H) into Cover Plate (6A) using thread sealant and hand hexagonal wrench. Apply grease and position O-Ring (6G) over Cover Cap (6B) until it rests against the flange. Blow out internal groove of Cover Cap (6B) with air hose. Place greased O-Ring (6F) into internal groove of Cover Cap (6B).
  • Page 25 Grease and install O-Ring (5) into groove on the Cover Plate (6A). Grease and install Thrust washers (15) and Thrust Bearing (16) into Cover Plate (6A) NOTE: Thrust Washers (15) has to be assembled onto either sides of Thrust Bearing (16) and then, this has to be greased and installed as a single unit into Cover Plate (6A) This concludes the Cover Subassembly.

  • Page 26: Carrier Subassembly

    Planetary Final Drive Service Manual Carrier Subassembly Apply a liberal coat of grease to the bore of Cluster Gear (3F). This will enable the Needle Rollers (3C) to be held in place during assembly. Install first row of 14 Needle Rollers (3C) into the bore of Cluster Gear (3F). NOTE: The last roller installed must be installed end wise.
  • Page 27 Using ample grease to hold it in position, slide one Thrust Washer (3B) over Planet Shaft (3E) with tang resting in the cast slot of Carrier (3A). With large end of Cluster Gear (3F) facing the roll pin hole in the Carrier (3A), place Cluster Gear (3F) into position in Carrier (3A) and push Planet Shaft (3E) through the Cluster Gear (3F) without going all the way through.

  • Page 28: Housing Spindle Subassembly

    Planetary Final Drive Service Manual Housing Spindle Subassembly If required, using Stud pressing fixture press Studs (1N) into the flange holes of the Hub (1G), be sure stud heads are tight to the hub flange face. Place Hub (1G) on table such that long hub end is up. Press Bearing Cup (1E) using T148905 with the large diameter side up into cover end of Hub (1G).
  • Page 29 Place Hub (1G) onto Spindle (1A) making sure the Seal (1B) is in position on the seal shoulder of Spindle (1A). NOTE: The Bearing Cone (1F) is a press fit onto Spindle (1A) and is installed using Snap Ring Assembly Tool T205660 Place Snap Ring Assembly Tool T205660 onto Spindle (1A).

  • Page 30: Coupling Subassembly

    Planetary Final Drive Service Manual Coupling Subassembly CAUTION: Safety glasses must be worn during these next steps. If necessary, install External Retaining Ring (21) into groove on OD of Coupling (19). If necessary, install Internal Retaining Ring (20) into retaining ring groove of the Coupling (19).

  • Page 31: Input Shaft Subassembly

    Planetary Final Drive Service Manual Input Shaft Subassembly CAUTION: Safety glasses must be worn during these next steps. If necessary, install Retaining Ring (10) onto the groove of Input Shaft (11). This concludes the Input Shaft Subassembly.

  • Page 32: Main Assembly

    Planetary Final Drive Service Manual Main Assembly Figure 1: 30, 35, 50, 54 & 73:1 Ratios Figure 2: 18, 24, 31 & 43:1 Ratios Continued on Next Page...
  • Page 33 Place Hub-Spindle Sub assembly on the table with Spindle flange side down. Set the Internal Gear (2) with the spline down, so that the spline of the spindle (1A) is in mesh with the internal spline of the Internal Gear (2). Install Input Shaft Subassembly with the retaining ring end down into the spindle counter bore.
  • Page 34 NOTE: Be sure that the punch marks remain in their correct location during Ring Gear (4). installation. Place Thrust Washer (15), Thrust Bearing (16) and Thrust Washer (15), in order, on the pilot diameter on Internal Gear (2). NOTE: For 30, 35, 50, 54 & 73:1 ratios Skip step 8. Install Input gear (13) with counter bore down in mesh with the Input Shaft (11) splines counter bore down.
  • Page 35 Install Cover Sub-Assembly onto the Ring Gear (4) being sure that the pipe plugs in the Hub (1G) and Cover (6A) are in time with each other. Be sure the Thrust Washers (15 & 16) remain on the Cover (6). Install four Shoulder Bolts (18) into the four marked counter bore holes in the Hub (1G).

  • Page 36: Assembly Drawing

    Planetary Final Drive Service Manual Assembly Drawing...

  • Page 37: Parts List

    Planetary Final Drive Repair Instructions Parts List Number Description SPINDLE LIP SEAL BEARING CUP BEARING CONE BEARING CUP BEARING CONE HOUSING THRUST WASHER EXTERNAL RETAINING RING PIPE PLUG STUD BOOT SEAL INTERNAL GEAR CARRIER CARRIER WASHER NEEDLE BEARING THRUST WASHER PLANET SHAFT CLUSTER GEAR ROLL PIN...
  • Page 38 Number Description INPUT SPACER SUN GEAR SPACER THRUST WASHER THRUST BEARING HEX BOLT SPECIAL BOLT COUPLING INTERNAL RETAINING RING EXTERNAL RETAINING RING...

  • Page 39: Assembly Tools

    Planetary Final Drive Repair Instructions Assembly Tools T114920 – CRADLE FOR STAKING PLANET PIN PLACE...
  • Page 40 T122786 – PLUG FOR PRESSING IN OIL SEAL...
  • Page 41 T134344 – SNAP RING SEATING TOOL...
  • Page 42 T137970 – TOOL TO PRESS IN BEARING...
  • Page 43 T148905 – ASSEMBLY PRESSING TOOL...
  • Page 44 T155783 – ASSEMBLY PRESSING TOOL...
  • Page 45 T220225 – LEAK TEST ADAPTER PLATE...
  • Page 46 T201476 – LEAK TEST ADAPTER PLATE...
  • Page 47 T205660 – SNAP RING ASSEMBLY TOOL...
  • Page 48 T223988 – ROLL TEST TOOL...
  • Page 49 T223989 – ROLL TEST TOOL...
  • Page 50 T223990 – ROLL TEST TOOL...
  • Page 51 T223997 – ROLL TEST TOOL...

  • Page 52: Contact Information

    For more information, contact Fairfield Manufacturing today Mailing Address Dana Incorporated Off-Highway Drive and Motion Technologies 2400 Sagamore Parkway South / P.O. Box 7940 Lafayette, IN 47903 USA...
  • Page 53 THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 54 Dana Incorporated Off-Highway Drive and Motion Technologies 2400 Sagamore Parkway South / P.O. Box 7940 Lafayette, IN 47903 USA 765-772-4000 www.grazianofairfield.com...

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