All vehicles require transmission for efficient operation. Transmission is also known as the gearbox and it serves to transfer power from the engine to the wheels. The New Holland farming and construction mobile equipment also have transmission which transfers power from the engine to the wheels and also enables their engines to idle while wheels are stationary. Transmission has mechanical elements which requires care as prescribed by supplier to keep them functional. This article focuses on some of the problems with New Holland transmission.
Table of Contents
Transmission Making Noise
New Holland transmission system sometimes makes a lot of noise. This noise is caused by many factors including worn out gears and incorrect backlash. Some of the causes of transmission noise in New Holland are damaged or worn out gear shift forks, defective or damaged shaft splines, insufficient transmission fluid, worn out or broken bearings and transmission oil contamination.
Incorrect backlash
Backlash in transmission refers to the maximum output shaft angle turn that can be achieved without turning the input shaft. The purpose of the backlash is to allow clearance between running gears which mesh together thereby limiting binding and excessive wear at contact points and avoid overload. Normal backlash is due to design while excessive backlash is caused by wear and tear of meshing gears during operation. New Holland transmission experiences excessive noise problem due to excessive backlash. To avoid this problem in New Holland transmission, it is important to ensure that incorrect backlash is adjusted. Refer to manual or contact competent person.
Worn Out Gears
The purpose of the gears is to act as varying contact points to enable different speeds to be achieved and transferred to wheels using different gear ratios. Worn out or damaged gears can also result in New Holland transmission noise problem. To avoid this problem it is recommended to follow supplier procedure and service manuals in replacement of worn out gears.
Worn or Damaged Shift Forks
Shift forks are mechanical elements which shifts or move synchronizers to mesh driven and driver gears. With time these metal components wear out and results in transmission noise problem in New Holland. The solution to this problem is to replace all worn out or damaged shift forks. It is also recommended to ensure that all transmission elements are adequately lubricated to avoid excessive wear and tear. Refer to supplier manual for transmission fluid guidelines.
Additionally, New Holland transmission consists of shaft splines which also get damaged through wear and tear. These units also need to be replaced to reduce noise problem in New Holland transmission.
Insufficient Transmission Fluid
Transmission operation generates heat through friction of elements in contact. The purpose of the transmission fluid is to provide gear lubrication to minimize friction and heat, helps in clutch friction operation and transmission cooling. In New Holland transmission, insufficient transmission fluid results in noise problem. It is therefore recommended to check and top up low transmission fluid using proper transmission fluid grade. In some cases the transmission oil may get contamination and thus requiring replacement with new and clean oil.
Damaged or Worn Out Bearings.
Another reason for transmission noise in New Holland is worn out bearings. Bearings act as friction elements thereby protecting rotating shafts from excessive wear at points of contact. If the bearings get damaged over time, they lose their efficiency in protecting various rotating parts and result in friction, heat and noise within the transmission system.
Hard Gear Shifting
Gears changing should be a smooth process. If gear changing is hard areas to look at include shift linkages, clutch system, shift forks and gears condition. New Holland transmission problems arise from defective elements.
Gear Shift Linkage
Shift linkages connects the gear selector to the transmission. These elements have to be in a good working condition to avoid hard gear shifting problem in New Holland. Always check and replace all rusty or worn out shift linkages to solve hard shifting problem in New Holland transmission.
Faulty Clutch
The purpose of the clutch in transmission is to disengage the engine and allow smooth gear change. If the clutch is not correctly adjusted, gear shifting becomes very difficult. New Holland transmission problems are solved by replacing faulty clutches and adjusting any improperly adjusted clutches.
Like gear shift linkages, shift forks also cause problems with New Holland transmission. Any damaged forks should be replaced.
Low Transmission Fluid Pressure
New Holland transmission require sufficient transmission fluid pressure and friction to make internal parts work without problems. Transmission pressure is built from the transmission fluid.
Low Transmission Fluid
Transmission fluid pressure is developed from transmission fluid. The level of transmission fluid must always be kept within stipulated levels to avoid transmission pressure loss. In case of loss of transmission fluid pressure, check the fluid level and top up to required level to avoid problems in New Holland transmission.
Transmission Oil Filter Dirty
For New Holland transmission that comes with oil filter, clogged or dirty filters may also lead to transmission fluid pressure loss problem. Dirt and clogged oil filters must be replaced as guided by manual. Additionally, New Holland transmission fluid pressure problem arises from faulty relief valve which should be replaced.
Transmission Fluid Leakages
As highlighted above, New Holland transmission need transmission fluid at right levels to function properly and avoid problems. Leakages leads to overheating and ultimately failure of the transmission system.
Damaged Seals or Gaskets
The purpose of seals and gaskets is to prevent any fluid leakages and providing tight seals against external environment. New Holland transmission problems arise from worn out seals or gaskets. Fluid loss is experienced leading to New Holland transmission problem of overheating, increased friction resulting in excessive wear and tear. Damaged or worn out seals should be replaced. All service requirements for periodic maintenance must be adhered to. Cases of blockages in transmission fluid return pipe is also known to cause fluid leakages resulting in New Holland transmission failure.
Incorrect Transmission Fluid Level
Excessively low and overfilling of hydraulic fluid should be avoided as this also affect performance of New Holland transmission system leading to transmission problems.
