SAFETY PRECAUTIONS FOR REMOVAL AND REFITTING OPERATIONS SAFETY PRECAUTIONS FOR REMOVAL AND REFITTING OPERATIONS When removing or refitting parts, always take the following safety precau- tions. 1. PRECAUTIONS FOR REMOVAL OPERATIONS Unless otherwise indicated, lower the working equipment until it rests on the ground. After disconnecting hydraulic and fuel system pipes, always fit plugs to the open ends of the pipes to prevent ingress of impurities. Before removing a cylinder, fully retract the piston and secure it in this po- sition using a retaining strap. Use containers of sufficient capacity when draining oil, coolant or fuel.
Before removing a part from the machine, check for alignment markings in- dicating the correct assembly position. If necessary, make new markings to ensure correct assembly. When unplugging electrical connectors, always grip the connectors firmly to avoid pulling on the wires. Where necessary, label wires and pipes before removal to avoid confusion when reconnecting. Check the number and thickness of any shims removed and keep them to- gether in a safe place. To lift the machine or any of its main components, use lifting equipment of suitable capacity.
When using eyebolts for lifting tractor components, first check that they are not deformed or damaged, screw them fully home and then turn the bolt so that the eye is aligned with the lifting hook. Before removing a part, clean the surrounding area and, after removing the part, cover it to prevent the ingress of dirt and dust. 2. PRECAUTIONS FOR REFITTING OPERATIONS Tighten nuts and bolts to the specified tightening torques. When refitting flexible pipes and wires, take care not to twist or tangle them.
Always fit new seals, O-rings, cotter pins and safety stop rings on reas- sembly; make sure that the ends of the cotter pins are separated and bent back so that the pin cannot be withdrawn from the hole. Ensure that circlips are correctly installed in their seatings. Always fit new seals, O-rings, cotter pins and safety stop rings; ensure that cotter pins are bent over so that they cannot work loose. When applying sealant, first clean the surface removing all traces of oil and grease and check for dirt or indentations, then apply the sealant evenly making sure that it forms a continuous film around any fixing holes.
Clean all parts, removing dirt, oxidisation, carbon deposits, burrs and in- dentations. 00-6