When the hydrostatic drive on a Weidemann 1250 CX35 wheel loader starts hunting, the fix runs through the variable displacement pump, and that is exactly where this 368-page Weidemann 1250 CX35 repair manual PDF (OEM ID 1000240975) earns its keep, before widening out to engine, axles, brakes, frame, cab and electrics. Full hydraulic and electrical circuit diagrams sit at the back, with plug and contact assignments so you can trace a dead sensor wire to its exact pin. Pressure test procedures walk you through checking the drive pump with a gauge against a target reading. Set valve play at 0.2 mm, torque wheel nuts to 285 Nm, refill the cooling system with roughly 7.5 liters. Invent a pressure setting and you can cook that pump. This bookmarked, text-searchable PDF puts the right procedure two clicks from the cover.
What's Inside This Weidemann 1250 CX35 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 17-38 | - |
| Technical Data, Testing Equipment and Special Tools | 39-72 | 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 | 73-122 | Complete Vehicle (Inspection Log) |
| Complete Vehicle | 123-132 | Helpful Tips, Protective Stickers |
| Engine | 133-160 | Engine Removal, Engine Installation, Radiator, Air Filter System, Fuel System, Exhaust System |
| Hydraulic System | 161-204 | Depressurizing, Hydraulic Cylinder, Driving Hydraulics, Steering Hydraulics, Brake Hydraulics, Working Hydraulics, Auxiliary Hydraulics |
| Drive and Axles | 205-216 | Drive Shaft, Front Axle, Rear Axle, Twin Tires |
| Brake System (Mechanical Section) | 217-222 | Service Brake, Parking Brake |
| Vehicle Frame and Load Arm | 223-254 | Front Carriage, Rear Carriage, Center Joint, Step Plate, Load Arm, Tool Attachment |
| Operator's Platform and Cab | 255-278 | Driver's Seat, ROPS Bar, Cab, Windshield Wiper, Steering Column |
| Electrical System | 279-302 | Generator, Battery, Switches, Sensors, Relays, Lighting System |
| Circuit Diagrams and Technical Descriptions | 311-352 | Hydraulic Circuit Diagram, Electrical Circuit Diagram |
| Supplier Service Manuals | 353-368 | Engine Workshop Manual, Variable Displ. Pump Repair Instructions, Variable Displ. Motor Repair Instructions, Repair Manual, Axle |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Wheel nut | 285 Nm | p. 49 |
| Hooked bolt nut (twin tires) | 285 Nm | p. 49 |
| Valve play (inlet and outlet) | 0.2 mm | p. 81 |
| Coolant quantity | approx. 7.5 l | p. 146 |
| Filter housing tightening | 1/6 of a rotation | p. 203 |
| Engine Output | 24.6 kW | p. 45 |
| Engine Capacity | 1,508 cm3 | p. 45 |
| Fuel Tank Capacity | 45 l | p. 47 |
| Engine Oil Capacity | 4.5 l | p. 47 |
| Cooling System Capacity | 7.5 l | p. 47 |
| Hydraulic Fluid Tank Capacity | 27 l | p. 47 |
| Front Axle Oil Capacity | 2.5 l | p. 47 |
Weidemann 1250 CX35 Common Problems This Manual Covers
Weidemann 1250 CX35 loses drive on slopes, engine revs fine but loader does not move
Check axle oil levels first: the front axle holds 2.5 l and the rear axle 3.5 l. Test hydrostatic supply pressure with the test gauge before condemning parts. Inspect the drive shaft couplings and hydrostatic motor connections for leaks using the Drive and Axles procedures that start on page 205.
Manual Section: Drive and Axles p. 205Lift arms raise slowly and bucket tilt feels weak once the oil warms up
Check hydraulic oil level; the tank holds 27 l. Replace the hydraulic filter and tighten the new filter housing 1/6 of a rotation past gasket contact as specified on page 203. If lift stays weak, test high pressure with the gauge and inspect bucket cylinder seals following the Hydraulic System procedures from page 161.
Manual Section: Hydraulic System p. 161Engine cranks but will not start, runs rough and dies under load when it does fire
Replace the fuel and air filters before chasing anything else; restricted filters kill this engine first. Check valve play and set inlet and outlet clearance to 0.2 mm per page 81. Verify engine oil level; the sump holds 4.5 l. Work through the fuel system procedures in the Engine section starting on page 133.
Manual Section: Engine p. 133Engine temperature climbs during long loading cycles and coolant boils over at the reservoir
Clean the radiator core with compressed air, blowing from the fan side out; loader work packs the fins with dust fast. Check coolant level cold and refill the system with approximately 7.5 l per page 146. Inspect coolant hoses for soft spots and pressure-test the cap before suspecting the water pump.
Manual Section: Engine p. 146Steering wheel develops play and the articulation joint knocks when crossing rough ground
Inspect the center joint bearings for radial play using the Vehicle Frame and Load Arm procedures starting on page 223; worn joint bearings are the usual culprit on this machine. Check the steering column nut and torque it to 15 Nm per page 278. Torque wheel nuts to 285 Nm while you are at it.
Manual Section: Vehicle Frame and Load Arm p. 223Frequently Asked Questions
What are the torque specifications for the wheel nuts on the Weidemann 1250 CX35?
The tightening torque for the wheel nuts on the Weidemann 1250 CX35 is 285 Nm. This value applies to both standard wheels and twin tires. p. 49
What is the primary working pressure for the hydraulic system on the Weidemann 1250 CX35?
The primary working pressure for the working hydraulics on the Weidemann 1250 CX35 is 185 bar. p. 45
What is the engine oil capacity for the Weidemann 1250 CX35?
The engine oil capacity for the Weidemann 1250 CX35, including the filter, is 4.5 liters. The recommended specification is engine oil SAE 10 W 40. p. 47
What is the valve play specification for the Weidemann 1250 CX35 engine?
The valve play for both the inlet and outlet valves on the Weidemann 1250 CX35 engine is 0.2 mm when the engine is cold. p. 81
What is the tightening torque for the cylinder head cover bolts on the Weidemann 1250 CX35?
The tightening torque for the cylinder head cover bolts and nuts on the Weidemann 1250 CX35 is 14 Nm. p. 49
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