New Holland - TZ Service

posted under new-holland-compact-tractors by neilm on 8/3/2010

New Holland TZ-Series - Changing Oils and Filters
(Pictures are of a TZ18 / TZ22 / TZ25 , Concepts apply to other similar models)


Before performing any of the following operations, be sure that engine is stopped and has been given adequate time to cool down

Changing the Engine Oil and Filter

  1. While engine is still somewhat warm take out drain plug and drain oil

  2. Put plug back in

  3. Remove old oil filter (be careful as oil will drain from filter)

  4. Apply a small amount of engine oil to the rubber seal of the new filter

  5. Tighten filter until it touches the mounting surface

  6. Tighten filter an additional ¾ turn by hand

  7. When a new filter is installed, engine oil typically decreases a little. Ensure that oil does not leak through the seal of the filter, then refill oil as needed.

Oil Capacity – 3.5 quarts (3.3 liters)

Change oil and filter after first 50 hours and every 100 subsequent hours under normal conditions. If operating under sever conditions change every 70 hours after the first change.


 

Changing the Primary Fuel Filter

  1. Take off left rear tire assembly and support the axle with a jack stand

  2. Drain fuel tank or pinch fuel hose to keep fuel from flowing when hose is detached

  3. Take mounting clamp off of filter

  4. Loosen clamps and detach fuel filter from hose

  5. Replace old filter with a new one, paying careful attention to make sure that directional arrow points in direction of fuel movement; from the tank to the engine

  6. Reassemble fuel line assembly by installing all hoses, clamps, and the mounting clamp

  7. Check for leakage

  8. Turn key to “ON” position for several seconds to allow system to bleed out any air

Replace primary fuel filter after every 300 hours of use
 

Draining the Secondary Fuel Filter

  1. Ensure that there is fuel in the tank

  2. Close fuel shutoff valve (so that the handle is pointing towards the “C”)

  3. Take fuel sediment bowl off

  4. Open fuel shutoff valve and allow it to flow until only fuel is flowing from the filter base, no water

  5. Close shutoff valve

  6. Reattach fuel sediment bowl

  7. Open fuel shutoff valve

  8. Bleed fuel system

Drain secondary fuel filter after every 100 hours of use


 

Changing the Fuel Filter (Diesel)

  1. Close fuel shutoff valve (so that the handle is pointing towards the “C”)

  2. Take fuel sediment bowl off by rotating the retaining nut

  3. Open fuel shutoff valve and allow it to flow until only fuel is flowing from the filter base, no water

  4. Install new fuel element

  5. Check the two O rings for any damage and replace them as needed

  6. Reattach the sediment bowl

  7. Open fuel shutoff valve (so that the handle is pointing towards the “O”)

  8. Bleed fuel system

Replace fuel filter after the first 50 hours of use, and then after every 200 subsequent hours
 

Bleeding the Fuel System (Diesel)

Fuel system needs to be bled for the following reasons:

  • System has been drained

  • Filter has been replaced

  • Tractor has run out of fuel

  • Fuel lines have been disconnected

  • Injection pump has been replaced

To bleed fuel system:

  1. Ensure that there is fuel in the tank

  2. Open shutoff valve (so that the handle is pointing towards the “O”)

  3. Turn key to “ON”

  4. Push hand throttle to highest speed position

  5. Turn engine over for a few seconds

 

Bleeding the Injector Lines

Injector lines need to be bled for the following reasons:

  • Tractor has run out of fuel

  • Injectors have been replaced

  • Injection pump has been removed

To bleed injector lines:

  1. Loosen injector line fittings at the injectors

  2. Push hand throttle to highest speed position

  3. Crank engine until air-free fuel flows from each connection (do not crank engine continuously for more than 30 seconds)

  4. Tighten fittings to 18-22 ft-lbs (24-29Nm) of torque

 

Changing the Air Cleaner Elements

Outer Element

  1. Remove air cleaner cover

  2. Pull outer element out of assembly

  3. Clean loose dirt from element

  4. Check the end of the canister for dirt

  5. Blow compressed air (under 30psi) from the inside of the filter to clean it

  6. Check inner diameter seals for damage (if damaged, replace element)

  7. Push primary element back into canister and reinstall

  8. Clamp air cleaner cover into place

Outer element needs to be cleaned after every 100 hours of use under normal conditions. Clean more often if operating in excessively dusty conditions.

Outer element should be changed after every 6 cleanings, or once a year

Inner Element

  1. Remove air cleaner cover and outer element to expose the inner element

  2. Inspect the inner element by placing a light inside the element. If little or no light shines through the element it is partially clogged.

  3. Clean dirt from element and canister

  4. Check seals for damage (if damaged, replace element)

  5. Push element back into canister

  6. Push outer element over the top of the inner element and clamp air cleaner cover into place

Inner element should be serviced as often as the outer element

 
 

Changing the Transmission, Rear Axle, and Hydraulic System Oil

  1. Oil drains best when engine is at operating temperature, but not hot

  2. Remove the filler plug and transmission and rear axle drain plug to drain oil

  3. Put drain plug back

  4. Fill with Ambra Multi G134 hydraulic oil to correct level on dipstick

  5. Replace dipstick and filler plug

Oil capacity – 13.8 quarts (13 liters)

Change transmission, rear axle, and hydraulic system oil after every 300 hours of use

During cold weather operation New Holland F200 oil can be used as it flows easily in low temperatures and can be used year round


 

Changing the Hydrostatic Transmission Filter

  1. Remove transmission fluid drain plug and drain fluid

  2. Remove old filter

  3. Apply a small amount of transmission oil to the rubber seal of the new filter

  4. Tighten filter until it touches the mounting surface

  5. Tighten filter an additional ¾ turn by hand

  6. Run engine and check for leaks around the filter

  7. Refill oil as needed

Hydraulic filter should be replaced after the first 50 hours of operation and then after every 300 subsequent hours

For operations at or below 0°F a special cold weather HST filter is available (part number SBA340500980)