Oerlikon Fairfield Torque-Hub 18HC00 Series Service Manual
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Oerlikon Fairfield Torque-Hub 18HC00 Series Service Manual

Planetary final drive
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Torque-Hub
Planetary Final Drive
18HC00 Series Service Manual
Rev 13/02/13
1

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Summary of Contents for Oerlikon Fairfield Torque-Hub 18HC00 Series

  • Page 1 ® Torque-Hub Planetary Final Drive 18HC00 Series Service Manual Rev 13/02/13...
  • Page 2 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 ® Co. Inc. concerning this documentation. Torque-Hub is a registered trademark of Fairfield Manufacturing Co.

  • 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 Cover Disassembly Input Coupling Disassembly Housing-Spindle Disassembly Output Carrier Disassembly Input Carrier Disassembly Assembly Instructions Cover Subassembly Input Carrier Subassembly Output Carrier Subassembly Input Coupling Subassembly Housing-Spindle Subassembly...

  • Page 4: Introduction

    Planetary Final Drive Service Manual Introduction This manual is a step-by-step guide to the disassembly and ® assembly of the 18HC00 Torque-Hub units with ratios of 57:1 or lower. It is designed for the customer or mechanic who is repairing ®...

  • 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 on page 10. 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

    95 cst and maintain a minimum viscosity of 40 cst under normal operating conditions. Some applications require special considerations; consult the machine manufacturer and Oerlikon Fairfield for more additional information. The table below lists the recommended viscosities for various ambient operating temperatures. These recommendations are based on temperature rise of 50°...
  • Page 9 Oil temperatures should be not higher than 160° to 180° F for continuous operation, and no higher than 200° F for intermittent operation. For special applications, high horsepower, high speeds or wide temperature changes, please consult Oerlikon Fairfield. ® Oil Fill Level...
  • Page 10 DISASSEMBLY...

  • Page 11: Main Disassembly

    Planetary Final Drive Service Manual Main Disassembly Perform a roll check and a leak check prior to disassembling the unit. Remove three magnetic Pipe Plugs (6H) and drain the oil out of the gearbox. NOTE: Record the condition and volume of the oil. Remove Bolts (27) from the Cover Subassembly.
  • Page 12 Remove the Input Sun Gear (7) if applicable. Lift out the Input Carrier Subassembly from Hub-Spindle Subassembly. Remove the Output Sun Gear (12). Remove the Ring gear (4) out of the Hub-Spindle Subassembly. Remove the Output Carrier Subassembly out of the Hub-Spindle Subassembly. Remove the Input Coupling Subassembly out of the Hub-Spindle Subassembly.

  • Page 13: Cover Disassembly

    Planetary Final Drive Service Manual Cover Disassembly Remove the O-Ring (5) from groove in the Cover Plate (6A) and discard it. Remove Thrust Washer (6J) from pockets in the Cover Plate (6A). Remove Pipe Plugs (6H) from the Cover Plate (6A). Remove the Hex Head Bolts (6C) from the Disengage Cap (6D), if required.

  • Page 14: Input Coupling Disassembly

    Planetary Final Drive Service Manual Input Coupling Disassembly CAUTION: Safety glasses must be worn during these next steps. Remove Retaining Ring (20C) from retaining ring groove of Input Shaft (9). Remove Input Shaft (9) from the splines of the Input Coupling (20A). Remove Spring (20B) from the Input Coupling (20A).
  • Page 15 THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 16: Housing-Spindle Disassembly

    Planetary Final Drive Service Manual Housing-Spindle Disassembly Set the unit on a bench so that the Spindle (1A) flange is down. Continued on Next Page...
  • Page 17 Remove O-Ring (5) from the Housing (1G). Remove External Retaining Ring (1J) and Thrust Washer (1L) out of Hub-Spindle Subassembly. Turn the unit over and carefully place the unit on a support base until the Spindle (1A) rests on it. Ensure there is enough gap to lower the Housing (1G) down. Use a dead blow hammer on the Housing (1G) flange to drive the inboard Bearing Cone (1F) off of the Spindle (1A).

  • Page 18: Output Carrier Disassembly

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

  • Page 19: Input Carrier Disassembly

    Planetary Final Drive Service Manual Input Carrier Disassembly Drive the Planet Shaft (8D) out of the carrier pin holes; forcing the Roll Pin (8E) to shear off. Hold on to the Planet Gear (8F) and push the Planet Shaft (8D) out of the Carrier (8A). The Thrust Washers (8B) will slide off the shaft as it is removed.
  • Page 20 ASSEMBLY...

  • Page 21: Cover Subassembly

    Planetary Final Drive Service Manual Cover Subassembly Install three Pipe Plugs (6H) into the Cover (6A) and torque to 33-36 ft-lbs. Grease the O-ring (5) and place it in the groove in the Cover (6A). Grease the Thrust Washer (6J) and place on the inner hub of the Cover (6A). Grease O-ring (6G) and install into the internal groove in the Cover (6A).

  • Page 22: Input Carrier Subassembly

    Planetary Final Drive Service Manual Input Carrier Subassembly Apply a liberal coat of grease to the bore of the Planet Gear (8F). This will enable the Needle Rollers (8C) to be held in place during assembly. Install Needle Rollers (8C) into the bore of each of the three Planet Gears (8F). NOTE: The last roller installed must be installed end wise.
  • Page 23 Finish pushing the Planet Shaft (8D) into the Carrier (8A) until roll pin holes of Planet Shaft and Carrier are aligned. If necessary, align roll pin holes using a 1/8” diameter punch. NOTE: The chamfer on the Roll Pin hole should be towards the roll pin hole in the Carrier. Drive the Roll Pin (8E) with small end into the roll pin hole in carrier and into the Planet Shaft (8D) until the larger end of the roll pin is flush with the outside diameter of Carrier (8A).

  • Page 24: Output Carrier Subassembly

    Planetary Final Drive Service Manual Output Carrier Subassembly Apply a liberal coat of grease to the bore of the Planet Gear (3F). This will enable the Needle Rollers (3C) to be held in place during assembly. Install one row of Needle Rollers (3C) into bore of the Planet Gear (3F). NOTE: The last roller installed must be installed end wise.
  • Page 25 Place the Planet Gear (3F) into position and push the Planet Shaft (3E) through the Planet Gear (3F) without going all the way through the carrier. Using ample grease to hold them in position, slide two Thrust Washers (3B) between the Planet Gear (3F) and the Carrier (3A).

  • Page 26: Input Coupling Subassembly

    Planetary Final Drive Service Manual Input Coupling Subassembly CAUTION: Safety glasses must be worn during these next steps. Install Internal Retaining Ring (20D) into the groove of Coupling (20A) Install Spring (20B) into Coupling (20A). Install Input Shaft (9) into Coupling (20A) Push down on the Input Shaft (9) and Install Internal Retaining Ring (20C) into groove of Coupling (20A) This concludes the Input Shaft Subassembly.
  • Page 27 THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 28: Housing-Spindle Subassembly

    Planetary Final Drive Service Manual Housing Spindle Subassembly Place Hub (1G) on table such that long hub end is up. Using alcohol and a clean rag, wipe off bearing locations on the Housing (1G) and the Spindle (1A). Press one Bearing Cup (1E) into bearing counter bore of spindle end of housing until seated against shoulder in housing.
  • Page 29 Spray the O.D. of the Lip Seal (1B) with alcohol and wipe with a clean rag. Place and visually align the Lip Seal (1B) with spring side down into the housing (1G) seal bore. Press the seal into the housing using seal press Tool T156799. When the seal press tool makes contact with the Housing (1G) the seal is fully seated.

  • Page 30: Main Assembly

    Planetary Final Drive Service Manual Main Assembly NOTE: Spray component parts with a liberal amount of oil as they are being assembled. Place Hub-Spindle Subassembly such that spindle flange end down. Install the Input Coupling Subassembly to the Hub-Spindle Subassembly. Install Output Carrier Subassembly onto Spindle (1A).
  • Page 31 The unit should now be leak and roll checked as per instructions on page 5 and 6. The motor can be reinstalled into the gearbox for the leak check to seal it off, and the unit pressurized through a pipe plug hole on the cover. This concludes the Main assembly.

  • Page 32: Assembly Drawing

    Planetary Final Drive Service Manual Assembly Drawing...

  • Page 33: Parts List

    Planetary Final Drive Repair Instructions Parts List Number Description SPINDLE LIP SEAL BEARING CUP BEARING CONE BEARING CUP BEARING CONE HOUSING EXTERNAL RETAINING RING BOOT SEAL THRUST WASHER MAGNETIC PIPE PLUG CARRIER THRUST WASHER NEEDLE BEARING THRUST SPACER PLANET SHAFT PLANET GEAR SPRING PIN ROLL PIN...
  • Page 34 Number Description PLANET SHAFT ROLL PIN PLANET GEAR INPUT SHAFT SHAFT / COUPLING SUN GEAR DOWEL PIN ID PLATE DRIVE SCREW COUPLING SPRING INTERNAL RETAINING RING INTERNAL RETAINING RING RETAINING RING HEX BOLTS...

  • Page 35: Assembly Tools

    Planetary Final Drive Repair Instructions Assembly Tools T160970 – SEAL ASSEMBLY PRESSING TOOL...
  • Page 36 T160969 – ASSEMBLY PRESSING TOOL...
  • Page 37 T156799 – SEAL ASSEMBLY TOOL...
  • Page 38 T198122 – CONCENTRICITY FIXTURE...
  • Page 39 T156792 – BEARING CUP PRESSING TOOL...
  • Page 40 T155655 – BEARING CUP ASSEMBLY TOOL...
  • Page 41 T144431 – BEARING CONE ASSEMBLY SLEEVE...
  • Page 42 T130717 – BEARING PRESSING TOOL...
  • Page 43 T205708 – LEAK TEST ADAPTOR PLATE...

  • Page 44: Contact Information

    Planetary Final Drive Repair Instructions Contact Information With more than 90 years of experience, Fairfield Manufacturing Co. Inc. has become the largest U.S. non-captive producer of gears, custom gear assemblies, planetary final drives and related gear products. Fairfield Manufacturing Co. Inc., headquartered in Lafayette, Indiana USA, is distinguished by our extensive design, manufacturing and applications engineering capabilities.
  • Page 45 THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 46 Oerlikon Fairfield U.S. 52 South / P.O. Box 7940 Lafayette, IN 47903 USA 765-772-4000 www.oerlikon.com/fairfield...

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Torque-hub 18hc00**4 series

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