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.
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.
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.
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 –...
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.
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.
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.
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.
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.
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.
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.
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.
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.
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...
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.
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.
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.
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.
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...
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.
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.
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.
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.
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...
Need help?
Do you have a question about the PRC 416-P and is the answer not in the manual?
Questions and answers