AxleTech PRC 416-P Maintenance Manual

Planetary axle wheel ends
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Planetary Axle Wheel Ends
Maintenance Manual 9F
• PRC 416-P
• PRC 756-P
Issued 05-98
$2.50

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Summary of Contents for AxleTech PRC 416-P

  • Page 1 Issued 05-98 $2.50 Planetary Axle Wheel Ends Maintenance Manual 9F • PRC 416-P • PRC 756-P...
  • Page 2 This maintenance manual describes the correct service and repair procedures for AxleTech WARNING A WARNING indicates a planetary drive axles, PRC 416-P and PRC 756-P. procedure that you must The information contained in this manual was follow exactly to avoid current at time of printing and is subject to serious personal injury.
  • Page 3: Table Of Contents

    Description ..............................4 Identification ..............................5 Section 2: Removal and Disassembly – PRC 416-P Planetary Axle Remove and Disassemble the PRC 416-P Planetary Axle Wheel End ............6 PRC 416-P Wheel End Cross Section ......................6 Remove the Brake Drum..........................6 Remove the Planetary Spider Assembly ....................8 Disassemble the Brake..........................9...
  • Page 4 Notes...
  • Page 5: Asbestos And Non-Asbestos Fibers Warning

    Material exposure to non-asbestos fiber dust, a potential cancer and lung disease Safety Data Sheets are available from AxleTech. hazard. Material Safety Data Sheets are available from AxleTech. Hazard Summary Hazard Summary Because some brake linings contain asbestos, workers who service brakes must Most recently manufactured brake linings do not contain asbestos fibers.
  • Page 6: Exploded View - Prc 416-P

    Section 1 Introduction PRC 416-P ITEM DESCRIPTION QTY ITEM DESCRIPTION QTY ITEM DESCRIPTION Brake Drum Snap Ring Hub and Cup Assembly Magnetic Fill/Drain Plug Planetary Sun Gear Inner Bearing Cup Planetary Spider Assembly Thrust Washer Inner Bearing Cone Set Screw...
  • Page 7: Exploded View - Prc 756-P

    Section 1 Introduction PRC 756-P ITEM DESCRIPTION QTY ITEM DESCRIPTION QTY ITEM DESCRIPTION Brake Drum Snap Ring Wheel Nut Magnetic Fill/Drain Plug Planetary Sun Gear Wheel Stud Planetary Assembly Cover Thrust Washer Inner Bearing Cup Capscrew Wheel Bearing Nut Inner Bearing Cone Hardened Washer Planetary Ring Gear Oil Seal Assembly...
  • Page 8: Description

    Description • The teeth of the floating sun gear mesh with teeth of the planetary spur gears. The AxleTech PRC 416-P and PRC 756-P planetary • The planetary gears rotate on planetary shafts axles incorporate a single reduction carrier/ that are mounted on a spider. The planetary differential assembly with hypoid gearing.
  • Page 9: Identification

    Section 1 Introduction Identification The exact axle model specification is shown on the identification tag located on the axle. Figure 1.2. Figure 1.2 SINGLE PLANETARY AXLES ONLY IF APPLICABLE: HOUSING TYPE T – TRANSMISSION ON CARRIER DESIGNATION: O– OSCILLATING OR PIN MOUNT C –...
  • Page 10: Section 2: Removal And Disassembly - Prc 416-P Planetary Axle

    Support the vehicle with safety stands. Do not work under a vehicle that is supported only by jacks. Jacks can slip or fall over. Serious personal injury can result. Figure 2.1 PRC 416-P WHEEL END CROSS SECTION Page 6...
  • Page 11 Section 2 Removal and Disassembly – PRC 416-P Planetary Axle 6. If necessary, remove the magnetic drain plug 9. Use a lifting device to support the brake from the bottom of the axle housing. Drain drum. Figure 2.2. and discard the lubricant from the carrier center section.
  • Page 12: Remove The Planetary Spider Assembly

    Section 2 Removal and Disassembly – PRC 416-P Planetary Axle 11. With the lifting device, carefully remove the WARNINGS brake drum. Figure 2.3. Observe all warnings and cautions provided by the press manufacturer to avoid damage to Figure 2.3 components and serious personal injury.
  • Page 13: Disassemble The Brake

    Section 2 Removal and Disassembly – PRC 416-P Planetary Axle Remove the Spindle and CAUTION Brake Spider The outer bearing cone will be loose as you pass it over the end of the spindle. Hold the cone securely to avoid dropping it and damaging the WARNING cone.
  • Page 14: Section 3: Removal And Disassembly - Prc 756-P Planetary Axle

    Section 3 Removal and Disassembly – PRC 756-P Planetary Axle Remove and Disassemble 1. Make sure the vehicle is on a level surface. the PRC 756-P Planetary Axle 2. Place blocks under the wheels not being serviced to keep the vehicle from moving. Wheel End 3.
  • Page 15 Section 3 Removal and Disassembly – PRC 756-P Planetary Axle 6. If necessary, remove the magnetic drain plug Figure 3.2 from the bottom of the axle housing. Drain and discard the lubricant from the carrier center section. WARNING When you work on a spring chamber, carefully follow the service instructions of the chamber manufacturer.
  • Page 16: Remove The Planetary Spider Assembly

    Section 3 Removal and Disassembly – PRC 756-P Planetary Axle Remove the Planetary WARNINGS Spider Assembly Observe all warnings and cautions provided by the press manufacturer to avoid damage to 1. With a lifting device, remove the planetary components and serious personal injury. spider assembly from the wheel hub and set it on a work bench.
  • Page 17: Disassemble The Brake

    Section 3 Removal and Disassembly – PRC 756-P Planetary Axle Remove the Spindle and Brake CAUTION Spider Do not damage the hub oil seal bore surface in the wheel hub. Damage to this surface will result WARNINGS in oil leakage after assembly. To prevent serious personal injury and 17.
  • Page 18: Section 4: Prepare Parts For Assembly

    Section 4 Prepare Parts for Assembly Clean Ground or Polished Clean Parts With Rough Finish Parts 1. Use cleaning solvent or a hot solution tank with a weak alkaline solution to clean parts WARNINGS with a rough finish. To prevent serious eye injury, always wear 2.
  • Page 19: Inspect Parts

    Section 4 Prepare Parts for Assembly Inspect Parts • A visible roller groove is worn in the cup or cone inner race surfaces. You can see the groove at the small or large diameter ends of • It is important to carefully inspect all parts for both parts.
  • Page 20: Inspect The Bevel Pinion And Ring Gear Sets

    Section 4 Prepare Parts for Assembly • • Spalling or flaking is present on the cup and Deep cracks or breaks are present in the cup, cone inner race surfaces that touch the rollers. cone inner race or roller surfaces. Figure 4.5.
  • Page 21: Inspect The Main Differential Assembly

    WARNING order this publication, call Meritor’s Customer The repair or reconditioning of front axle Service Center at 800-535-5560. components is not allowed. AxleTech recommends replacing damaged or out-of- specification components. All major components are heat treated and tempered. The components...
  • Page 22: Apply Silicone Gasket Material

    Apply Silicone Gasket Material 5. Assemble the components immediately to permit the gasket material to compress evenly between parts. Tighten the fasteners to the AxleTech Specifications: required torque value for that size fastener. Refer • ThreeBond 1216 to the Torque Chart in Section 7.
  • Page 23: Section 5: Assembly And Installation - Prc 416-P Planetary Axle

    Section 5 Assembly and Installation – PRC 416-P Planetary Axle Assemble and Install the WARNING PRC 416-P Planetary Axle When you apply some silicone gasket materials, Wheel End small amounts of acid vapor are present. To prevent possible serious injury, the work area must be well-ventilated.
  • Page 24: Assemble The Wheel End

    Section 5 Assembly and Installation – PRC 416-P Planetary Axle NOTE CAUTION Replace the camshaft bushing and grease seals • before the camshaft bracket is installed onto the Do not damage the hub oil seal bore surface brake spider. Refer to Meritor Maintenance in the wheel hub.
  • Page 25: Adjust The Wheel Bearing Preload

    Section 5 Assembly and Installation – PRC 416-P Planetary Axle Adjust the Wheel 9. Install the sun gear thrust washer. The washer tangs must engage the holes in the Bearing Preload ring gear. 10. Install the planetary sun gear and snap ring NOTE onto the axle shaft.
  • Page 26: Install The Planetary Spider Assembly

    NOTE The PRC 416-P axle has a common oil level between the carrier and the wheel ends. Three 5. Install a set screw into each pinion shaft. locations must be filled. The vehicle must be on a Tighten each set screw to 35 lb-ft (47 N•m).For...
  • Page 27: Section 6: Assembly And Installation - Prc 756-P Planetary Axle

    Section 6 Assembly and Installation – PRC 756-P Planetary Axle Assemble and Install the WARNING PRC 756-P Planetary Axle When you apply some silicone gasket materials, Wheel End small amounts of acid vapor are present. To prevent possible serious injury, the work area must be well-ventilated.
  • Page 28: Assemble The Wheel End

    Section 6 Assembly and Installation – PRC 756-P Planetary Axle NOTE CAUTION Replace the camshaft bushing and grease seals • before the camshaft bracket is installed onto the Do not damage the hub oil seal bore surface brake spider. Refer to Meritor Maintenance in the wheel hub.
  • Page 29: Adjust The Wheel Bearing Preload

    Section 6 Assembly and Installation – PRC 756-P Planetary Axle Adjust the Wheel WARNING Bearing Preload Take care when using Loctite ® to avoid serious personal injury. Follow the manufacturer’s NOTE instructions to prevent irritation to the eyes and To adjust the wheel bearing preload, the skin.
  • Page 30: Assemble The Planetary Spider And Gearing Assembly

    Section 6 Assembly and Installation – PRC 756-P Planetary Axle Assemble the Planetary Spider WARNING and Gearing Assembly When you apply some silicone gasket materials, small amounts of acid vapor are present. To NOTE prevent possible serious injury, the work area If the original planetary pinions are used, verify must be well-ventilated.
  • Page 31 Section 6 Assembly and Installation – PRC 756-P Planetary Axle 7. Install the brake drum over the wheel studs until the drum seats onto the planetary spider flange. 8. Mount the inner and outer wheels. Install the wheel nuts and tighten them to the vehicle manufacturer’s specification.
  • Page 32: Section 7: Specifications

    Section 7 Specifications PRC 416-P Wheel End Torque Chart Item Fastener Torque Value Wheel rim nut Per OEM specification Pinion shaft set screw 35 lb-ft (47 N•m) Oil fill/level/drain plug 35 lb-ft (47 N•m) Planetary spider-to-wheel hub slotted head screw...
  • Page 33 Section 7 Specifications PRC 756-P Wheel End Torque Chart Item Fastener Torque Value Wheel rim nut Per OEM specification Lock plate screw 20-30 lb-ft (27-41 N•m) Planetary spider cover 35-50 lb-ft (48-68 N•m) Wheel bearing adjusting nut Refer to instructions on page 25. Planetary spider-to-wheel hub slotted head screw Hand tighten (no specification) Camshaft bracket to spider...
  • Page 34: Lubrication Specifications

    O-76N, Gear Oil GL-5, SAE 75W/140 None None NOTE Refer to AxleTech Maintenance Manual No. 1, “Lubrication,” for further lubrication information. To order this publication, call AxleTech International’s Customer Service Center at 877-547-3907 or send a fax to 866-547-3987. Page 30...
  • Page 36 Suite 400 AxleTech, International France AxleTech do Brasil Sistemas Automotivos Ltda. 3001 West Big Beaver Road 4, Rue Jean Servanton Avendia Joao Batista, 830 Troy, Michigan 48084 Boite Postale 656 Centro-Osasco-SP U.S.A. 42042 Saint Etienne Cedex 1 06097095 Brasil Toll Free: 877-877-9717...

This manual is also suitable for:

Prc 756-p

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