Theory of Operation The pressure lubrication system consists of an oil strainer, positive displacement oil pump, oil pressure regulating valve, full flow oil filter, and an electrical pressure warning switch. The oil pump draws lubrication oil from the oil pan through a strainer and a suction tube. The oil is then pumped through an oil… Read More »
Function The cooling system allows the engine to rise to full operating temperature when engine is started cold, but keeps the engine from overheating once engine reaches operating temperature. The thermostat opens when operating temperature has been reached, circulating coolant from the hot engine to the radiator to prevent engine overheating. The cooling system is… Read More »
Reference ( 1 ) Basic Hydraulic Function Checks Action: Do the following checks. Record details or repair obvious problems before proceeding to the hydraulic diagnostics. Ask operator: – How is machine performing? – When does it malfunction? – In what application? Check maintenance records for: – Correct service intervals – Unusual, frequent or similar features… Read More »
( 1 ) Operational Check Action: IMPORTANT: Perform this test in an open area, free of obstructions that could cause damage to the tractor or other property. Start engine and allow oil to warm to operating temperature if needed. Conduct the following checks with the tractor parked safely and the engine ON. 1. Set engine… Read More »
Reference ( 1 ) Preliminary Check Action: With the tractor engine OFF, perform the following checks: – Inspect the front tires for wear and correct tire pressure for application. – Inspect the front axle for wear or loose parts such as tie rod, spindles, tires and rims. – Inspect all steering lines, fittings and cylinders… Read More »
Reference ( 1 ) Rear Brake Operational Check Action: →NOTE: Perform this test in an open area, free of obstructions that could cause damage to the tractor or other property. Power brake checks: 1. Start engine and allow hydraulic oil to warm up to a normal operating temperature, if needed. 2. Make sure the brake… Read More »
Reference ( 1 ) PTO Switch Check Action: 1. Sit on operator′s seat. 2. Lock park brake. 3. Move the transmission range lever to neutral. 4. Pull the PTO switch to the ON position. 5. Turn key switch to START position. →NOTE: Engine must not crank 6. Push the PTO switch to the OFF position.… Read More »
Reference ( 1 ) RIO Operational Check Action: IMPORTANT: Damage may occur if PTO is shifted with PTO switch in On position, especially with implement connected. Vehicle must have mid implement installed. Start vehicle. With engine at low idle and PTO switch in OFF position, PTO and PTO indicator light on instrument panel should be… Read More »