An hour from now you could have the variable displacement pump out of your Weidemann 1770 CX50, working straight from this 356-page repair manual PDF, OEM document 1000239317 for the wheel loader. Replacement procedures fill more than half the book, from resealing the working hydraulics control valve to detaching the center joint and its bearing. Hydraulic and electrical circuit diagrams sit near the back, tracing the drive, steering, brake and working circuits and listing plug and contact assignments pin by pin; supplier workshop manuals for the engine, variable displacement pump and motor, and planetary axles round it out. Pressure-test the radiator at roughly 1 bar, fill the cooling system with about 11.5 liters, and pull the wheel nuts to 285 Nm. A whole repair can stall on one missing pressure value. This bookmarked, text-searchable PDF travels to whatever site the loader is parked on.
What's Inside This Weidemann 1770 CX50 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 17-38 | - |
| Technical Data, Testing Equipment and Special Tools | 39-70 | Technical Data, Filling Quantities, Tightening Torques, Pressure Values, Flow Rates, Safety Stickers, Testing Equipment (Test Pressure Gauge, Flow Meter, Test Pump) |
| Inspections, Maintenance Work and Troubleshooting | 71-116 | Complete Vehicle (Inspection Log) |
| Complete Vehicle | 117-126 | Helpful Tips, Replacing Protective Stickers |
| Engine | 127-152 | Engine Removal, Engine Installation, Radiator, Air Filter System, Fuel System, Exhaust System |
| Hydraulic System | 153-200 | Depressurizing, Driving Hydraulics, Steering Hydraulics, Brake Hydraulics, Working Hydraulics, Auxiliary Hydraulics |
| Drive and Axles | 201-212 | Drive Shaft, Front Axle, Rear Axle, Twin Tires |
| Brake System (Mechanical Section) | 213-218 | Service Brake, Brake Shoes, Brake Drum, Parking Brake, Bowden Cable |
| Vehicle Frame and Load Arm | 219-252 | Front Carriage, Rear Carriage, Center Joint, Step Plate, Load Arm, Tool Attachment |
| Operator's Platform and Cab | 253-278 | Seat, ROPS Bar, Cab, Windshield Wiper, Steering Column |
| Electrical System | 279-304 | Generator, Battery, Switches, Sensors, Relays, Lighting System |
| Circuit Diagrams and Technical Descriptions | 311-338 | Hydraulic Circuit Diagram, Electrical Circuit Diagram, Plug Assignments / Contact Assignments, Technical Description |
| Supplier Service Manuals | 339-356 | Engine Workshop Manual, Variable Displacement Pump Repair Instructions, Variable Displacement Motor Repair Instructions, Planetary Axle Workshop Manual |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Wheel nut | 285 Nm | p. 49 |
| Hooked bolt nut (twin tires) | 285 Nm | p. 49 |
| Leakage inspection pressure | 1 bar | p. 84 |
| Coolant quantity | approx. 11.5 l | p. 139 |
| Engine Output | 35.7 kW | p. 45 |
| Engine Capacity | 2216 cm3 | p. 45 |
| Fuel Tank Capacity | 53 l | p. 47 |
| Engine Oil Capacity | 8.3 l | p. 47 |
| Hydraulic Fluid Tank Capacity | 30 l | p. 47 |
| Front Axle Transmission Oil Capacity | 3.2 l | p. 47 |
| Rear Axle Transmission Oil Capacity | 3.9 l | p. 47 |
| Wheel Nut Tightening Torque | 285 Nm | p. 49 |
Weidemann 1770 CX50 Common Problems This Manual Covers
Weidemann 1770 CX50 engine overheats under load, temperature gauge climbs, coolant boiling out of radiator
Check coolant level in the expansion tank; the system holds approx. 11.5 l per page 139. Pressure test the radiator with the hand pump at approx. 1 bar, shown on page 84, and watch for seepage. Clean chaff and dirt out of the cooler core with compressed air, then refill slowly, no faster than 5 l/min.
Manual Section: Engine Troubleshooting p. 84Loader loses thrust on grades, moves fine empty but bogs down with a full bucket
Check hydraulic fluid level first; the tank holds 30 l (page 47). Connect the test pressure gauge and verify the gear pump reaches 210 bar per the pressure values on page 77. If pressure checks out, trace the driving hydraulics circuit on the schematic on page 317 and inspect the drive shaft for wear.
Manual Section: Hydraulic System TroubleshootingEngine will not start, starter cranks slowly or just clicks in cold weather
Test battery voltage under load and clean both battery terminals and the engine ground strap. Verify engine oil is the correct viscosity for the season; the crankcase holds 8.3 l (page 47). Work through the engine will not start chart on page 84, then check the ignition switch and starter relay with the wiring diagram on page 319.
Manual Section: Engine Troubleshooting p. 84Brake pedal travel too long, parking brake will not hold loader on a slope
Remove the wheels and inspect brake shoes and drum for wear, glazing, or oil contamination; replace shoes in axle sets. Adjust the parking brake Bowden cable until the lever holds on a grade, following the brake procedures starting on page 213. Torque wheel nuts to 285 Nm when refitting (page 49).
Manual Section: Brake System (Mechanical Section) p. 213Steering heavy at idle, jerky articulation response when turning with a loaded bucket
Check hydraulic fluid level; the tank takes 30 l (page 47). Test steering pressure at the relief valve; it should hold 190 bar per page 77. If pressure is good but response stays jerky, inspect the center joint bearings for play, covered in the frame section starting on page 219.
Manual Section: Hydraulic System p. 153Frequently Asked Questions
What are the torque specifications for the wheel nuts on the Weidemann 1770 CX50?
The tightening torque for the wheel nuts on the Weidemann 1770 CX50 is 285 Nm. This value applies to both standard wheels and twin tires. p. 49
What is the engine oil capacity for the Weidemann 1770 CX50?
The engine oil capacity for the Weidemann 1770 CX50, including the filter, is 8.3 liters. The recommended specification is SAE 10 W 40. p. 47
What is the valve clearance specification for the Weidemann 1770 CX50 engine?
The valve clearance for both inlet and outlet valves on the engine is 0.2 mm when the engine is cold. p. 79
What is the primary pressure setting for the Weidemann 1770 CX50 gear pump?
The primary pressure for the gear pump on the Weidemann 1770 CX50 is set to 210 bar. p. 45
How often must hydraulic hoses be replaced?
Hydraulic hoses on the Weidemann 1770 CX50 must be replaced after a service life of six years. p. 27
What do I get after purchasing this Weidemann 1770 CX50 manual?
This is a 356-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Is this Weidemann 1770 CX50 manual print-friendly?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
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