Part of the Case Repair Manuals.
Case 686G, 686GXR and 688G telescopic handlers all work from this 636-page factory service manual, form 7-16041, which follows the machine from the diesel engine out to the boom wear pads. This Case 686G, 688G service manual PDF pairs electrical and hydraulic schematics with troubleshooting charts for the engine, steering, brakes and boom, so you can trace a fault from the steering priority valve through to the tilt compensation cylinder. Nearly a quarter of the book goes to the T12000 powershift transmission, including clutch engagement and converter stall checks, and the Type 212 drive axle gets its own long section down to the planetary reduction and differential. Refill the transmission with 12.9 liters (13.6 quarts); run a 1/2 inch Grade 8 bolt to 110 to 132 pound-feet. A made-up torque figure lets go under load. Bookmarks and a live text layer let you pin down the right seal or bearing before calling the parts counter, so you order it once.
What's Inside This Case 686G, 686GXR, 688G Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 3-24 | Section Index - General, Standard Torque Specification, Fluids and Lubricants, Safety and General Information, Loctite Product Chart |
| Engine | 25-42 | Section Index - Engine, Diesel Engine Specifications, Engine and Transmission Removal and Installation, Engine Troubleshooting |
| Fuel System | 43-44 | Section Index - Fuel System |
| Electrical | 45-82 | Section Index - Electrical, Electrical System General, Electrical Schematics and Troubleshooting, Electrical Gauges and Senders, Alternator |
| Steering | 83-110 | Section Index - Steering, How It Works, Steering Specifications, Steering Troubleshooting, Steering Pump and Steering Column, Steering Selector Valve, Steering Priority Valve |
| Power Train | 111-134 | Section Index - Power Train, How It Works, Removal and Installation of Power Train Components, Transmission Specifications and Troubleshooting, Drive Axle |
| Brakes | 135-154 | Section Index - Brakes, How It Works, Brake System Specifications, Brake System Troubleshooting, Brake System Removal and Installation of Components |
| Hydraulics | 155-236 | Hydraulics How It Works, Hydraulic Specifications, Schematic and Troubleshooting, Removal and Installation of Hydraulic Components, Hydraulic Cylinders, Hydraulic and Fuel Tanks |
| Mounted Equipment and Chassis - Introduction and Specifications | 237-246 | Mounted Equipment, Chassis, Boom Assembly, Troubleshooting |
| Boom Components Removal and Installation | 247-268 | Crowd Cylinder, Carriage Tilt Cylinder, Tilt Compensation Cylinder, Boom Lift Cylinders, Retract Chain, Extend Chain, Wear Pads, Boom Sections |
| Electrical and Hydraulic Schematics | 269-272 | Electrical Schematics, Hydraulic Schematics |
| Drive Axle Type 212 | 273-388 | Maintenance, Lubrication, Braking Disks, Steering Case, U-Joint, Planetary Reduction, Steering Cylinder, Differential Unit |
| Troubleshooting and Optionals | 389-496 | Troubleshooting, Optionals, Hydraulic Negative Brake, Incoming Drum Brake, Limited Slip Differential, Hydraulic Differential Lock, Reduction Gear |
| T12000 Powershift Transmission | 497-636 | Transmission Assembly, Operation, Disassembly, Reassembly, Clutch Engagement, Converter Stall, Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Grade 5 Bolts, Nuts, and Studs (1/4 inch) | 108 to 132 Pound-Inches | p. 6 |
| Grade 5 Bolts, Nuts, and Studs (1/2 inch) | 80 to 96 Pound-Feet | p. 6 |
| Cold Cranking Amperes | 1000 amperes | p. 51 |
| System Voltage | 12 volts, Negative ground | p. 57 |
| Transmission oil capacity | 12.9 liters (13.6 quarts) | p. 125 |
| Hydraulic Pump Filter replacement interval | 1000 hour | p. 189 |
| Hydraulic pump standby pressure | 550 psi | p. 191 |
| Hydraulic pump compensated pressure setting | 3045 psi | p. 191 |
| Dry weight of the fuel tank | 38 kg (85 lbs) | p. 235 |
| Dry weight of the hydraulic tank | 58 kg (128 lbs) | p. 235 |
| Transmission oil filter change interval | Every 1000 hours | p. 618 |
| Engine Oil Capacity with Filter Change | 11 litres (11.6 U.S. quarts) | p. 13 |
