1. Introducció i finalview
This service manual provides detailed instructions and procedures for the maintenance, repair, and overhaul of the Bobcat 631 Skid Steer Loader chassis. It is intended for qualified service technicians and personnel familiar with heavy equipment repair practices. Adherence to the procedures outlined in this manual is crucial for ensuring the safe and efficient operation of the machine.
The manual is organized into sections covering various components and systems of the chassis, including preventive maintenance, safety guidelines, engine service, and general repair procedures. Always refer to the latest version of this manual and any supplementary service bulletins.
Figure 1.1: Front cover of the Bobcat 631 Skid Steer Loader Service Manual, indicating coverage for models 630, 631, and 632.
2. Informació de seguretat
Safety is paramount when performing any service or maintenance on the Bobcat 631 Skid Steer Loader. This section outlines critical safety warnings and precautions to prevent injury to personnel and damage to the equipment.
2.1 Normes generals de seguretat
- Always wear appropriate personal protective equipment (PPE), including safety glasses, gloves, and protective footwear.
- Ensure the machine is turned off, parked on a level surface, and the parking brake is engaged before beginning any work.
- Relieve hydraulic pressure before disconnecting hydraulic lines or components.
- Never work under a raised loader arm without proper support devices.
- Mantenir la zona de treball neta i ben il·luminada.
Figure 2.1: A page from the manual illustrating correct and incorrect safety practices during maintenance. Examples include proper lifting, cleaning, and avoiding working under unsupported loads.
2.2 Símbols d'advertència
Pay close attention to warning symbols throughout this manual. They indicate potential hazards that could result in serious injury or death if not avoided.
- ADVERTIMENT: Indica una situació de perill que, si no s'evita, podria provocar la mort o lesions greus.
- PRECAUCIÓ: Indica una situació de perill que, si no s'evita, podria provocar lesions lleus o moderades.
- NOTA: Provides important information or tips for efficient procedures.
3. Manteniment preventiu
Regular preventive maintenance is essential for the longevity and optimal performance of your Bobcat 631 Skid Steer Loader. This section details routine checks and service intervals.
3.1 Identificació del número de sèrie
It is important to correctly identify the loader's serial number and engine serial number for parts ordering and service records. These numbers are typically located on specific plates on the machine.
Figure 3.1: Illustrations showing the typical locations for the loader serial number plate and engine serial number plates (e.g., Wisconsin, Ford, Deutz) on the Bobcat 631 Skid Steer Loader.
3.2 Comprovacions diàries
- Comproveu el nivell d'oli del motor.
- Inspect hydraulic fluid level.
- Comproveu el nivell del refrigerant.
- Inspect tires for damage and proper inflation.
- Verify all lights and safety devices are operational.
3.3 Intervals de servei
| Interval | Tasca |
|---|---|
| Every 10 Hours / Daily | Perform daily checks, lubricate pivot points. |
| Every 50 Hours / Weekly | Check battery electrolyte, inspect drive chains. |
| Cada 250 hores / Mensualment | Change engine oil and filter, inspect air filter. |
| Cada 500 hores / 6 mesos | Change hydraulic fluid and filter, inspect fuel system. |
4. Engine Service
This section provides detailed procedures for servicing the engine components of the Bobcat 631 Skid Steer Loader. Proper engine maintenance is vital for performance and longevity.
4.1 Rear Door Access
Accessing the engine compartment often requires opening or removing the rear door. Ensure the door is properly secured or removed according to safety guidelines.
Figure 4.1: Diagrams illustrating the process of releasing the rear door and installing a door stop for safe engine access on the Bobcat 631 Skid Steer Loader.
4.2 Engine Oil and Filter Change
- Warm up the engine to operating temperature.
- Park the loader on a level surface and engage the parking brake.
- Place a suitable drain pan under the engine oil drain plug.
- Remove the drain plug and allow the oil to drain completely.
- Remove the old oil filter.
- Apply a thin film of new oil to the gasket of the new filter and install it.
- Torneu a instal·lar el tap de drenatge.
- Fill the engine with the recommended type and quantity of new engine oil.
- Engegueu el motor i comproveu si hi ha fuites.
- Shut off the engine and recheck the oil level, adding if necessary.
5. Guia de resolució de problemes
This section provides a guide to common issues that may arise with the Bobcat 631 Skid Steer Loader and offers potential solutions. This is not an exhaustive list, and complex issues should be addressed by a certified technician.
| Símptoma | Causa possible | Acció Correctiva |
|---|---|---|
| El motor no s'engega | Low battery charge, fuel system issue, starter motor fault. | Check battery terminals and charge, inspect fuel filter, test starter. |
| Pèrdua de potència hidràulica | Low hydraulic fluid, clogged filter, pump malfunction. | Check fluid level, replace filter, inspect pump. |
| sobreescalfament del motor | Low coolant, clogged radiator, faulty thermostat. | Check coolant level, clean radiator fins, test thermostat. |
6. Especificacions
This section provides key technical specifications for the Bobcat 631 Skid Steer Loader chassis. Refer to these specifications for proper component selection and operational parameters.
| Paràmetre | Valor |
|---|---|
| Model | Bobcat 631 |
| Tipus de motor | (Refer to specific engine manual for details, e.g., Wisconsin, Ford, Deutz variants) |
| Pes operatiu | (Varies by configuration, refer to machine data plate) |
| Rated Operating Capacity | (Varies by configuration, refer to machine data plate) |
| Hydraulic System Pressure | (Refer to hydraulic system section for specific pressures) |
Nota: For precise specifications, always consult the data plate on your specific Bobcat 631 machine and the relevant engine manufacturer's manual.
7. Garantia i Suport
This service manual is a technical guide for repair and maintenance. For information regarding product warranty, please refer to the original purchase documentation or contact your authorized Bobcat dealer. Support for specific parts and service procedures can be obtained through official Bobcat service channels or authorized distributors.
For genuine Bobcat parts and certified service, always contact an authorized Bobcat dealer. Using non-genuine parts or unauthorized service may void your warranty and compromise machine performance and safety.
Editor: Jensales
