Specifications, Service, and Repair of Farm and Lawn Tractors

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New Holland T4.55 - Operation and service

Two days ago I found out the damage with my NH T4.55. Diesel doesn't turn over. Tell me please what is the trouble?

Fuel grade is incorrect. Fuel pump drive problems. Check and repair. Incorrect fuel injection pump timing. Need to set up.

T4.55 tractor issues. Loss of power. How should I troubleshoot it?

Incorrect valve timing. Check and adjust, or replace cam shaft if necessary. Travel speed is too fast for conditions.

Help with the question what happened if diesel engine stops suddenly?

Air in the fuel lines or filter element blocked. Check, bleed air or replace the filter element.

NH T4.55 tractor trouble. Hard shifting transmission. What could it be?

Wrong transmission lubricant - Drain and fill with recommended lubricant.

I would like to know why my steering wheel rotates very easy? What do I need to do to get rid of problem?

Low hydraulic oil level in the tank - Pour full. The steering cylinder is heavily worn - Change the seal. Defect in the power steering pump - Install a new pump.

I purchased a New Holland T4.55 in february. Presently there is problem. Diesel won't start. Can someone help me identify the source of failure?

Starter motor turns engine too slowly - Need a replacement or overhaul. Restriction in a fuel pipe - Clean and flush. Filter element is dirty - Replace it. Worn piston rings - Replace the piston rings.

I bought the same model. Recently I noticed the steering is very hard. Help me find out what is problem?

Low hydraulic oil level in tank. The front wheels are not aligned correctly. Steering gear not properly adjusted (too tight). hydraulic connection leaking. It is necessary to fix the problem. Power steering pump defect. Install the new pump. Power steering is worn out. Install the new power steering.

T4.55 model trouble. Diesel cranks but not starting. Need help to define the cause of failure. What should I check?

Loose or corroded electrical connections. Plugged fuel filter. Remove Air Filter and clean. Cold start system worked incorrectly. Defect or failure of piston rings. Gasket Blow-By or Leakage. Water in fuel. Crankcase oil too heavy. Use oil of proper viscosity.

NH T4.55 diesel issues. Motor long starting permanently. How do i resolve an issue?

Restriction in fuel tank vent. Air leaks on intake hoses. Exhaust pipe is clogged. Slow starter speed. Dirty or faulty injectors. Filter clogged. Long Idle periods.

Steering stopped working on my tractor. What is problem?

The air was formed in hydraulic system. You need remove air. Low oil rate in system. It is required to add oil. Steering cylinder has a defect Check and repair.

Having used the exact same tractor. Why diesel failure to start? How could i fix this defect?

Valve timing is improper - Make adjustment. Compression increase. Cylinder bores are worn - Need overhaul. Leakage between seats and valves - Remove leaks.

New Holland T4.55 failures. I hear a diesel knock. what is the damage?

Lack of oil. Fill up. Engine overheated. Engine overloaded.

I have a problem why tractor front axle to make a lot of noise chronically when driving?

Gears teeth crumbling. You need to install new gears. Bearings have damage. Swap the replacement.

I have this tractor three years. Recently, engine start is very difficult. How to get rid of this?

Injector is dirty. Need to check injector. Injection pump does not work. Replace fuel pump.

I have the exact same model. Can anybody tell me why differential lock assembly is defective suddenly? How can I fix it? What should I do?

Diaphragm damaged or disks of the friction clutch are worn out. Change worn components.

We have New Holland T4.55. Engine not starting. Help me How can I eliminate a breakdown?

Probably fuel filter element has dirt. Or the fuel pump to lost adjustments.

Please help me. Diesel overheats regularly. How to fix it?

Lack of coolant - Refill with coolant. Cooling fluid boils in the radiator. Poor fuel atomization by the injectors. High-speed and idle mixture needles not properly adjusted. Engine overloaded. Shift to lower gear or reduce load. Fan belt is damaged. Change as required.

My friend has T4.55 tractor. Day before yesterday he heard knocking in the rear axle. What problem tell me?

These signs denote bearing problems.

Help with the question what happened if diesel engine emits white smoke?

When white gas visible from the exhaust pipe you required to change piston rings urgently. Injector pump or injectors delivering fuel unevenly. Check and service injectors and injector pump – specialist operation.

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