Specifications, Service and Repair of Farm and Lawn Tractors

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New Holland 8670 - Overhaul issues

Some days ago I discovered the damage on our New Holland 8670. Motor will not rotate. Tell me please what is the probable damage?

You must use the recommended fuel grade. Drive high pressure fuel pump is broken. Check and overhaul. Incorrect fuel injection pump timing. Adjustment required.

8670 tractor damages. Poor engine output. How do I get rid of problem?

Dirty/clogged muffler. Clean/replace muffler. Fuel supply pump, engine control common rail relief valve faulty. Excessive engine load.

Tell me please what is problem if engine stalling?

Airlock in fuel line. Fuel-line is leaking air - Retighten clamps, replace defective pipes.

8670 model problem. Transmission shifts hard. What's the reason?

Wrong transmission lubricant - Drain and fill with recommended lubricant.

I would like to know why steering wheel rotates too easy? What should I do to fix an issue?

Low hydraulic oil level in tank - It is required to add oil. The steering cylinder is heavily worn - Perform repair. Defect in the power steering pump - Replace pump.

I bought New Holland 8670 in september. Presently there is trouble. Engine not starting. Can someone help me define the source of failure?

Starter faulty - Inspect the starter and install a new as required. Fuel line is clogged up - Clean and wash. Fuel filter is dirty - Replace it. Wear piston rings - You need repair.

I bought the same model. Yesterday I saw steering wheel works bad. Can anybody tell me what's malfunction?

Low hydraulic oil level in the tank. Pour completely. Hydraulic connections are not sealed. It is necessary to eliminate the problem. Pump of power steering is broke. Repair the pump. Power steering has a defect. Replace it.

NH 8670 tractor problem. Diesel motor starts hard. Help me define prime cause of failure. What should I check?

Restriction in air filter/cleaner or induction system. Incorrect functions of the cold start system. Broken or Worn Piston Rings. Defective fuel pump drive shaft. Water in fuel. Crankcase oil too heavy. Use oil of proper viscosity.

NH 8670 diesel motor troubles. Motor is difficult to start sometimes. How can i fix this defect?

Restricted Fuel Lines. Air in fuel tank. Bleed fuel tank. Exhaust pipe is clogged. Slow starter speed. Diesel injection nozzles faulty or sticking. Filter clogged. Long Idle periods.

Steering not working on my tractor. What repairs should I do?

Hydraulic system has a large amount of air. You must draw out air. The minimum oil indicator in the tank. It is required to add oil. Steering cylinder has a defect Check and repair.

I have the same model. Why diesel engine failure to start? How could i fix malfunction?

Incorrect valve timing - Adjust valve timing. High or Low compression. Wear cylinder bores - You must fix it. Leakage between valves and seats - Remove leakage.

NH 8670 damages. Diesel engine knocks. what is the probable breakdown?

This is a small residue of engine oil. Add oil. Cooling temperature is minimum.

I can not understand why front axle to make a lot of noise incessantly while driving?

This is the failure of any gear. It is recommended to replace the gear. Bearings crumbled. Replace it.

I own this model three years. Sometimes diesel start is very hard. How to get rid of this?

Injector has clog. You must checking injector. The fuel pump problems. Replace high-pressure fuel pump.

I get the same model. Can someone explain to me what's problem if differential lock assembly is damaged suddenly? What's solution to the problem?

Diaphragm worn out or disks of the friction clutch are worn out. You have to make repairs.

We have 8670 tractor. Diesel engine not starting. Tell me can I solve the problem myself?

Probably fuel filter clogged. Otherwise high-pressure fuel pump is improperly adjuste.

I have the problem. Diesel constantly overheats. How to repair it?

Low coolant level. Fill radiator to proper level, check radiator, coolant recovery tank, and hoses for loose connection or leaks. Clogged radiator fins - Clean the radiator fins. Internal wear limits out of specification. Injector timing is too advanced. Adjust as per specification. Diesel Overload - Reduce diesel load. Fan belt is damaged. Change as required.

My friend has New Holland 8670. Yesterday he diagnosed a loud knocking in the rear axle housing. Which part is damaged?

These signs point to bearing problems.

Can someone say me why engine emits white smoke?

If white smoke comes from the exhaust pipe you need to replace piston rings immediately. Cold-running engine - Allow to warm check thermostat.

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