CASE 845B / 865B / 885B Grader Series B Rear Axle Training Manual PDF | Differential & Brake System Service Guide

The CASE Series B Rear Axle Technical Training Manual provides detailed step-by-step instructions for axle disassembly, differential adjustment, brake overhaul, and planetary gear servicing on CASE 845B, 865B VHP, and 885B VHP motor graders.

This manual includes the full mechanical breakdown of the rear axle assembly, hydraulic differential lock control, limited-slip configuration, and periodic servicing procedures.
Each section contains exploded diagrams, component callouts, and torque specifications, serving as a complete technical reference for workshop and service personnel.

Technical Highlights

• Vehicle range: CASE 845B VHP, 865B VHP, 885B VHP Graders

• Assembly coverage: Axle Supports, Center Housing, Differential, Planetary Drives, Outboard Brakes, Tandems

• Differential types: Hydraulic lock (standard) / Limited Slip (optional)

• Complete torque, preload, and backlash specifications

• Brake system: Wet disc type (5 or 6 discs per wheel)

• Hydraulic lock piston service and pressure test procedure

• Detailed lubrication guidelines (Axlepower SAE 80W-90 & Transaxle 20W-40 oils)

• Exploded diagrams with labeled callouts for every subassembly

• Maintenance and oil-replacement instructions per CASE factory standards

Table of Content

• Overview & Axle Structure
   Axle Supports • Center Housing • Tandems / Chain Tanks • Outboard Brakes • Axle Shaft • Planetaries • Bevel Gear / Differential Assembly

• Center Housing & Differential Design
   Hydraulic Lock System • Optional Limited Slip Unit • Bevel Gear Set • Crown Guard & Cross Pin Arrangement

• Brake System Assembly & Overhaul
   Exploded Wheel Assembly • Wet Disc Stack Layout • Pressure Piston and Seal Replacement • Tool 4A95444 Use Procedure

• Final Drives / Side Reduction Gears
   Planetary Gears • Needle Bearings • Reducer Hub Service • Thrust Adjustment & Shim Selection

• Differential Overhaul & Bevel Gear Adjustment
   Pinion Preload • Backlash Measurement • Ring Nut Locking • Contact Pattern Verification

• Axle Support & Planetary Spider Reassembly
   Bearing Press Procedure • Torque Values • Shim Calculation Example (E-F = G)

• 865B / 885B Differential Lock Hydraulic System
   Piston Back Plate Assembly • O-Ring Replacement • Compression Spring and Axial Bearing Sequence

• Troubleshooting Section
   Wear Indicators • Oil Leak Diagnosis • Pressure Drop or No-Lock Conditions • Noise and Vibration Analysis

File Information

• Manufacturer: CASE Construction Equipment

• Applicable Models: 845B VHP, 865B VHP, 885B VHP Graders

• Component Group: Rear Axle / Differential / Outboard Brakes

• Language: English

• Pages: 36

• Slides: 71

• Format: PDF

• Category: Technical Training / Axle Service Manual

Delivery

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