Hydraulics drive the Gehl 1648 Plus asphalt paver's hydrostatic travel, hopper floor, feed augers and screed lift, and this 84-page Gehl 1648 Plus operator manual PDF (Form No. 918218) gives you the hydraulic and electrical schematics next to its controls, safety, operation and lubrication chapters. Troubleshooting charts fill a solid stretch near the back, tracing mat defects, material-delivery problems, drive valves, pump and motor faults and cylinder issues to their likely causes. Service intervals run from 10-hour daily checks to the 1000-hour hydraulic oil and strainer change, and a closing torque table covers Grade 2, 5, 8 and 8.8 fasteners. Expect the hydrostatic drive pump to relieve at 3500 psi (241 bar) and the auger pump at 2000 psi (138 bar); the reservoir takes 20 gal. (75.7 L). A made-up relief setting can burst a hose under a full hopper. Bookmarks and a searchable text layer land you on the chapter you want in seconds.
What's Inside This Operator Manual
| System | Pages | Key Topics |
|---|
| Introduction | 9-12 | Model and Serial Number Information, Controls and Components Identification |
| Specifications | 13-16 | Dimensions Measures and Weights, Hydraulic System Specifications |
| Checklists | 17-20 | Pre-Delivery Checklist |
| Safety | 21-28 | Mandatory Safety Shutdown Procedure, Safety Reminders, Pre-Operation Safety Reminders, Operation Safety Reminders, Service Safety Reminders, Screed Propane Heater Safety Reminders |
| Indicators and Controls | 29-40 | Guards and Shields |
| Maintenance | 41-44 | Maintenance Interval Chart, Maintenance Log |
| Operation | 45-54 | First Time Operation, Stopping the Paver, Walk-Around Inspection, Hands-On Check (Using the Screed Propane Heater) |
| Lubrication | 55-56 | General Information, Grease Fitting Locations |
| Schematics | 57-60 | Hydraulic Schematic, Electrical Schematic |
| Service and Storage | 61-72 | Dealer Services (Engine Components, Hydraulic System Components, Electrical Components) |
| Troubleshooting | 73-78 | Engine, Paver-Related Mat Problems, Material-Delivery, Compaction-Related Mat Problems, Drive and Main Control Valves, Hydraulic Pump and Motors System, Hydraulic Cylinders |
| Decal Locations | 79-80 | General Information |
| Torque Specifications | 83-84 | Unified National Thread, Metric Coarse Thread, Grade 2, Grade 5, Grade 8, Grade 8.8 |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Variable Hydrostatic Drive Pump - Maximum Relief Pressure | 3500 psi (241 bar) | p. 14 |
| Hydraulic Auger Drive Pump - Maximum Relief Pressure | 2000 psi (138 bar) | p. 14 |
| Engine Horsepower (net) @ Engine Speed | 48 (35.8 kW) @ 3000 rpm | p. 13 |
| Engine Oil Capacity | 7.8 qts. (7.4 L) | p. 13 |
| Hydraulic Reservoir Capacity | 20 gal. (75.7 L) | p. 15 |
| Fuel Tank Capacity | 12.5 gal. (47.3 L) | p. 15 |
| Hydraulic System Return Filter | 5 Micron | p. 14 |
| Torque Hubs Gear Oil Capacity (each hub) | 17 ounces (500 cc) | p. 55 |
| Engine Cooling System Capacity | 5.7 qts. (5.4 L) | p. 13 |
| Max. Engine Speed (with no load) | 3210±25 rpm | p. 13 |
