This is the Terex PT-50/60 service manual for the PT-50 and PT-60 rubber track loaders, powered by the Perkins 404D-22 and 404D-22 T diesel engines. Its 85 pages are organized by machine system, from safety and technical specifications through the hydraulics, undercarriage, and troubleshooting.
The manual gives you specifications and torque values for both models, system diagrams for the filtering and cooling, auxiliary, and drive loop circuits, and disassembly and assembly procedures for the operator enclosure, radiator and oil cooler, hydraulic reservoir, hydrostatic and auxiliary pumps, undercarriage, and loader.
Maintenance schedules cover engine oil, hydraulic fluid and filters, and the fuel and water separator. A pressure testing chapter walks through checking and adjusting charge pressure, and the troubleshooting section maps common symptoms to their likely causes. It is the workshop reference for keeping a PT-50 or PT-60 track loader working.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Product Safety | 5-10 | Chapter Overview |
| Technical Specifications | 11-12 | Pt-50 Specifications, Pt-60 Specifications |
| System Diagrams | 13-16 | Chapter Overview, Filtering and Cooling System, Auxiliary Circuit System, Drive Loop System, Electrical Attachment Outlet |
| Machine Controls | 17-18 | Loader Control, Drive Control, Throttle |
| Operator Enclosure | 19-24 | Light Bar, Ignition Switch, Gauges, Lap Bar Gas Assist Spring |
| Seat & Fuel Sender | 25-28 | Seat, Fuel Sending Unit, Fuel Sending Unit Hose, In-Tank Weight |
| Radiator and Oil Cooler | 29-34 | Fan Guard, Radiator/Cooler |
| Hydraulic Reservoir | 35-42 | Filter Element, Filter Assembly, Filler Cap Assembly, Access Cover Assembly, Reservoir Gauge, Suction Screen |
| Loader & Transmission Controls | 43-48 | Chapter Overview, Personal Safety, Machine Preparation, Loader/Transmission Controls Disassembly and Assembly Procedures, Joystick Removal and Installation |
| Hydrostatic & Auxiliary Pump | 49-54 | Auxiliary Gear Pump, Tandem Pump, Pump Drive Coupler |
| Undercarriage (Part 1) | 55-56 | Center Wheels, End Wheels, Sprocket Rollers, Tracks, Outboard Bearings, Drive Sprockets |
| Undercarriage (Part 2) | 57-66 | Center Wheel R&I, End Wheel R&I, Sprocket Roller R&I, Track R&I, Outboard Bearing R&I, Drive Sprocket R&I, Drive Motor R&I, Idler Wheel Hub Service |
| Loader | 67-70 | Lift Cylinders, Tilt Cylinders, Low-Flow Relief Valve |
| Maintenance | 71-76 | Chapter Overview, Maintenance Schedule, Engine Oil (Oil Change Procedures, Specifications), Hydraulic Fluid and Filter (Change Procedures), Fuel/Water Separator |
| Testing Pressure | 77-80 | Chapter Overview, Personal Safety, Machine Preparation, Hydraulic Pressure Adjustment Procedures, Charge Pressure Check, Charge Pressure Adjustment |
| Troubleshooting | 81-84 | Chapter Overview, Personal Safety, Machine Preparation, Preliminary Inspection (Visual Inspection, Troubleshooting Scenarios) |
| Back Cover | 85 | Manufacturer Information, Distributor Information, Contact Details |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| PT-50 Transmission Mounting Bolts | 85 ft-lb. w/Blue Loctite | p. 11 |
| PT-50 Drive Sprocket Drive Teeth Bolts | 88 ft-lb. -Dry | p. 11 |
| Troubleshooting - Machine starts but hydraulics will not operate | Low charge pressure | p. 82 |
| Troubleshooting - Auxiliary flow does not work. Loader works | Auxiliary hydraulic fuse blown | p. 82 |
| Track deflection (maximum) | 0.75" (1.9 cm) | p. 75 |
| Track tension adjustment range | 0.50" (1.3 cm) and 0.75" (1.9 cm) | p. 75 |
| Hydraulic filter change interval | 250 hours | p. 72 |
| PT-60 Center Idler Wheel Mounting Bolts torque | 105 ft-lbs. (142 Nm) -Dry | p. 12 |
| PT-60 Drive Sprocket Drive Teeth Bolts torque | 105 ft-lb. (142 Nm) -Dry | p. 12 |
| PT-50 Drive pumps displacement | 2.349 in³/rev (38.5 cc/rev) | p. 11 |
| PT-50 Drive pumps relief pressure | 5500 psi, 380 bar | p. 11 |
