13-4
140-3 SERIES
DISASSEMBLY AND ASSEMBLY PRECAUTIONS WHEN CARRYING OUT OPERATION
2. Precautions when carrying out installation work
• Tighten all bolts and nuts (sleeve nuts) to the specified (KES) torque.
• Install the hoses without twisting or interference.
• Replace all gaskets, O-rings, cotter pins, and lock plates with new parts.
• Bend the cotter pins and lock plates securely.
• When coating with adhesive, clean the part and remove all oil and grease, then coat the threaded portion
with 2 – 3 drops of adhesive.
• When coating with gasket sealant, clean the surface and remove all oil and grease, check that there is no
dirt or damage, then coat uniformly with gasket sealant.
• Clean all parts, and correct any damage, dents, burrs, or rust.
• Coat rotating parts and sliding parts with engine oil.
• When press fitting parts, coat the surface with anti-friction compound (LM-P).
• After fitting snap rings, check that the snap ring is fitted securely in the ring groove.
• When connecting wiring connectors, clean the connector to remove all oil, dirt, or water, then connect
securely.
• When using eyebolts, check that there is no deformation or deterioration, screw them in fully, and align the
direction of the hook.
• When tightening split flanges, tighten uniformly in turn to prevent excessive tightening on one side.
★ When operating the hydraulic cylinders for the first time after reassembling cylinders, pumps and other hy-
draulic equipment removed for repair, always bleed the air as follows:
1) Start the engine and run at low idling.
2) Operate the work equipment control lever to operate the hydraulic cylinder 4 – 5 times, stopping the cyl-
inder 100 mm from the end of its stroke.
3) Next, operate the hydraulic cylinder 3 – 4 times to the end of its stroke.
4) After doing this, run the engine at normal speed.
★ When using the machine for the first time after repair or long storage, follow the same procedure.
3. Precautions when completing the operation
• If the coolant has been drained, tighten the drain valve, and add water to the specified level. Run the engine
to circulate the water through the system. Then check the water level again.
• If the hydraulic equipment has been removed and installed again, add engine oil to the specified level. Run
the engine to circulate the oil through the system. Then check the oil level again.
• If the piping or hydraulic equipment have been removed, always bleed the air from the system after reas-
sembling the parts.
★ For details, see TESTING AND ADJUSTING, Bleeding air.
• Add the specified amount of grease (molybdenum disulphide grease) to the work equipment parts.
To Next Page
Loading...
Need help?
General
