Zetor Forterra service schedule

Zetor Forterra · Forterra 95-125 and HSX 100-140 (HSX listed 2012-2016); other years, check your handbook

Covers the Zetor Forterra (95, 105, 115, 125, CL and HSX 100 to 140).

Every maker's service job for the Zetor Forterra, counted in hours, with the oils, filters and parts each one needs. Add your tractor to Farmyard Workshop and it works out what's due from your hours and dates, and keeps the service history.

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Versions: Forterra 95 / 105 / 115 / 125 and CL (no exhaust after-treatment); Forterra HSX 100 to 140 (diesel particle filter / urea)

Service intervals

Job	When
50-hour lubrication	every 50 hours
100-hour checks	every 100 hours
Engine oil and filter change	every 500 hours or every year
500-hour checks	every 500 hours or every year
Fuel filter change	every 500 hours
Gearbox suction filter magnet and pressure filter	every 500 hours
Front PTO gearbox oil and strainer	every 500 hours
Cab heating filter	every 1,000 hours or every 2 years
Air cleaner main element change	every 1,000 hours
Front axle housing and reducer oil change	every 1,000 hours
Gearbox and final drive oil change	every 1,500 hours
Hydrostatic steering oil and filter (95-125)	every 1,500 hours
Air cleaner safety element change	every 2,000 hours
Coolant change	every 2 years

Service jobs and parts

50-hour lubrication

Chassis · every 50 hours

The handbook says lubricate the tractor every 50 hours by its lubrication chart. The HSX chart has 25 points, including the front axle pins, solid-axle central pin, transmission shaft clutches, front axle drive and the front three-point hitch cylinder pins. Use PTFE grease on a suspended front axle.

Part	Qty	Notes	Part number
Grease	1	EP2 grease. Grease to DIN 51825 KP 2 K-20 (NLGI 2), such as Shell Retinax HD2 or LA 2; PTFE grease for a suspended front axle on HSX. Aztec Oils match: VOLCATEC LITHIUM EP 2	check your handbook

Step-by-step

Only grease with the engine stopped and the tractor secured by the parking brake.
Wipe each nipple, pump in grease until clean grease shows and wipe off the excess.
Work through the front axle, transmission shaft clutches, hitch and linkage points on your lubrication chart.

Tools: Grease gun, Rags

100-hour checks

Chassis · every 100 hours

The handbook gives a 100-hour list: blow out the cooler with compressed air, service the dry air cleaner when the indicator shows, check the oil in the gearbox and final drive, the front PTO gearbox, the reducers and front axle housing, drain condensate from the air reservoir, and check the steering and brakes.

Step-by-step

Blow through the cooler from the engine side.
Check the gearbox, front PTO box, reducer and front axle oil levels.
Drain water from the air reservoir.
Test the steering, tractor brakes and trailer brakes.

Tools: Compressed air, Rags

Engine oil and filter change

Engine · every 500 hours or every year

Zetor's schedule lists the engine oil and the full-flow oil filter together at 500 hours, or at the yearly service if that comes first. The handbook says the filter is replaced with every oil change.

Part	Qty	Notes	Part number
Engine oil	1	15W-40. ≈10 L (HSX: Zetor 15W-40 L-SAPS, ACEA E9/E7, API CJ-4/SM). Aztec Oils match: EMPROTEC EHPD 15W-40	check your handbook
Oil filter (full-flow)	1	Partao lists this as a genuine Zetor oil filter for the Forterra HSX. Older Forterra: Partao also lists genuine 93407006 for the Forterra range. Check which fits your engine	222212637
Drain plug sealing ring	1	The handbook says check it and replace it if damaged. Check your handbook for the number	check your handbook

Step-by-step

Park on level ground, stop the engine and apply the parking brake. Run the engine first so the oil is warm and drains well, then switch off.
Put the tray under the sump, unscrew the drain plug and let all the oil run out.
Clean the drain plug, check its sealing ring and refit it.
Unscrew the old oil filter. Clean the sealing face on the filter housing.
Smear the new filter's rubber seal with the same oil you will fill with. Screw it on by hand until the seal touches, then tighten a further 3/4 to 1 1/4 turns. The handbook gives turns, not a torque.
Fill with about 10 L of oil, run the engine for a minute and check for leaks.
Stop, wait a few minutes and check the dipstick. Top up to the upper mark.
Take the old oil to a recycling point.

Tools: Drain tray (15 L), Filter wrench, Socket for the sump plug, Funnel, Gloves, Rags

500-hour checks

Chassis · every 500 hours or every year

The 500-hour service list covers V-belt tension, steering play, front axle pin play, clutch and brake pedal free play, the parking, foot and trailer brakes, the air system, the battery terminals (clean and lightly grease) and the seat. The HSX list adds calibrating the injection pump stops and checking the control-unit software.

Step-by-step

Check and adjust the V-belt tension.
Check the steering and front axle pin for play.
Check the free play of the clutch and brake pedals and test the brakes.
Clean the battery terminals and coat them thinly with grease.
Check the air system for leaks and the seat for correct working.

Tools: Spanners, Grease

Fuel filter change

Fuel · every 500 hours

The 95-125 schedule lists the fuel filter element at 500 hours. The HSX table lists the same item but its column marks could not be read, so check the interval in your handbook if you have an HSX.

Part	Qty	Notes	Part number
Fuel filter	1	Partao lists this as a genuine Zetor fuel filter for Forterra (HSX, HD, CL), Proxima and Major	222212648

Step-by-step

Stop the engine and let it cool. Clean around the filter head.
Place a container under the filter and unscrew the old filter.
Smear the new filter's seal with clean diesel and screw it on by hand.
Bleed the fuel system as your handbook describes, then run the engine and check for leaks.

Tools: Filter wrench, Container for fuel, Rags

Gearbox suction filter magnet and pressure filter

Transmission · every 500 hours

The schedule lists cleaning the magnet and strainer of the hydraulic pump suction filter and replacing the gearbox oil cleaner element at 500 hours, more often than the oil.

Part	Qty	Notes	Part number
Transmission oil cleaner element (gearbox pump filter)	1	Check your handbook for the number	check your handbook
Gearbox distributor delivery filter element (HSX)	1	Check your handbook for the number	check your handbook

Step-by-step

Stop the engine and clean around the filter housings.
Take out the suction filter, wipe the magnet clean and wash the strainer.
Replace the oil cleaner element and the delivery filter element if fitted.
Refit, run the engine and check for leaks, then check the oil level.

Tools: Drain tray, Filter wrench, Clean diesel for washing, Rags

Front PTO gearbox oil and strainer

Front axle · every 500 hours

The schedule lists the front PTO box oil and cleaning its strainer at 500 hours. Check the level every 100 hours.

Part	Qty	Notes	Part number
Front PTO gearbox oil	1	ATF / Dexron II-E type fluid from the handbook list. ≈2.7 L. Aztec Oils match: TRANSMATEC ATF D II	check your handbook

Step-by-step

Drain the oil, then remove and wash the strainer.
Refit and fill to the level mark.

Tools: Drain tray, Socket set, Funnel

Cab heating filter

Cab · every 1,000 hours or every 2 years

The schedule lists the cab heating filter element at 1,000 hours or every 2 years.

Part	Qty	Notes	Part number
Cab heating filter element	1	Check your handbook for the number	check your handbook

Step-by-step

Open the filter cover, fit the new element and close it.

Tools: Screwdriver

Air cleaner main element change

Engine · every 1,000 hours

The 95-125 schedule lists the air cleaner element at 1,000 hours. In between, service the dry air cleaner when the clogging indicator shows (the handbook checks it at 100 hours).

Part	Qty	Notes	Part number
Air cleaner set (outer 18011914, inner 18011915)	1	Partao lists the set as genuine Zetor for Forterra Turbo and Proxima models. Check it fits your model and serial number	18011914
Air cleaner safety (inner) element	1	Replaced every 2,000 hours, see the next task	18011915

Step-by-step

Stop the engine. Open the air cleaner housing and lift out the outer element.
Wipe out the housing. Do not let dirt fall into the intake.
Fit the new outer element and close the housing.
Reset the clogging indicator if it has a reset button.

Tools: Gloves, Clean cloth

Front axle housing and reducer oil change

Front axle · every 1,000 hours

The 95-125 schedule lists the front axle housing oil and the reducer oil at 1,000 hours. Check the levels every 100 hours.

Part	Qty	Notes	Part number
Front axle oil	1	80W-90. Zetor LS 80W, API GL-4/GL-5 (80W-90 GL-5 also listed). ≈6.5 L in the housing and 2 x 0.6 L in the reducers. Aztec Oils match: TRANSMATEC HD-5 80W-90	check your handbook

Step-by-step

Drain the housing and each wheel reducer, with the reducers' plugs at the bottom.
Refit the plugs and fill the housing and reducers to their level plugs.
Take the old oil to a recycling point.

Tools: Drain tray, Socket set, Funnel, Gloves

Gearbox and final drive oil change

Transmission · every 1,500 hours

The 95-125 schedule lists the gearbox and final drive housing oil at 1,500 hours. The HSX table lists the same oil, but its columns could not be read, so check your handbook if you have an HSX. Change the gearbox suction and pressure filters at the same time.

Part	Qty	Notes	Part number
Gearbox and hydraulic oil	1	10W-30 STOU, API GL-4 (Zetor Extra 10W-30 STOU). ≈52 L on 95-125, ≈60 L on HSX; about 4 L more on a first fill. Aztec Oils match: AGRITEC UTTO	check your handbook
Gearbox suction filter and pressure filter elements	1	Replaced with the oil, see the filter task. Check your handbook for the numbers	check your handbook

Step-by-step

Park on level ground, apply the parking brake and run the tractor briefly so the oil is warm.
Put a large tray under the gearbox and final drive housing and remove the drain plug. Let it drain fully.
Change the filters and clean the suction filter magnet and strainer (see the filter task).
Refit the plug, fill with the oil in the handbook to the dipstick mark, run the hydraulics for a few minutes and recheck.
Take the old oil to a recycling point.

Tools: Drain tray (65 L), Socket set, Funnel, Gloves

Hydrostatic steering oil and filter (95-125)

Steering · every 1,500 hours

The 95-125 schedule lists the steering oil and its filter element at 1,500 hours. The HSX table I read has no steering oil row.

Part	Qty	Notes	Part number
Steering oil	1	HLP 32 hydraulic oil, DIN 51524. ≈2.7 L	check your handbook
Steering filter element	1	Check your handbook for the number	check your handbook

Step-by-step

Drain the steering tank, replace the filter element and refill with HLP 32 oil.
Bleed the steering as your handbook describes and check for leaks.

Tools: Drain tray, Funnel

Air cleaner safety element change

Engine · every 2,000 hours

The 95-125 schedule lists the safety insert at 2,000 hours.

Part	Qty	Notes	Part number
Air cleaner safety (inner) element	1	Partao lists 18011915 as the inner filter of the genuine Forterra air cleaner set	18011915

Step-by-step

Replace this element when you change the outer element, never clean and refit it.
Keep the intake clean while the housing is open and close it carefully.

Tools: Gloves, Clean cloth

Coolant change

Cooling · every 2 years

The schedule lists the coolant every 2 years (reading of the table: the 'every 2 years' marks sit against the coolant row).

Part	Qty	Notes	Part number
Coolant	1	Check your handbook for the antifreeze type. ≈20.5 L	check your handbook

Step-by-step

Let the engine cool completely before opening the cap.
Drain the system, flush and refill with a correct mix, then bleed and top up after a warm-up run.

Tools: Drain tray (25 L), Funnel

Oils, fluids and capacities

System	Oil or spec	Capacity
Engine	Zetor four-cylinder turbocharged diesel (engine code varies by model, check your handbook)
Engine oil	15W-40. Forterra 95-125: API CH-4 or better (10W grade for very low temperatures). HSX: Zetor 15W-40 L-SAPS, ACEA E9/E7, API CJ-4/SM (low-ash oil for the particle filter)	10 L (Forterra 95-125 table; the HSX table lists the same 10 L in the same position, check your handbook)
Coolant	20.5 L. Check your handbook for the antifreeze type
Valve clearances	Check your handbook
Engine oil	15W-40 (HSX: Zetor 15W-40 L-SAPS, ACEA E9/E7, API CJ-4/SM)	10 L
Gearbox and final drive housing	10W-30 STOU, API GL-4 (Zetor Extra 10W-30 STOU). Other listed grades: 80W, 80W-85, 10W-30, 10W-40, all GL-4	52 L (95-125); 60 L (HSX). Add about 4 L on a first fill; more for slope work
Front driving axle housing	Zetor LS 80W, API GL-4/GL-5. Listed alternatives include 80W-90 GL-5 and 10W-30 GL-4	6.5 L
Front axle planetary reducers	Same oil as the front axle housing	2 x 0.6 L
Front PTO gearbox	ATF or Dexron II-E type fluid (list of tested brands in the handbook)	2.7 L
Hydrostatic steering (95-125)	HLP 32 hydraulic oil to DIN 51524	2.7 L
Brake fluid (95-125)	Check your handbook for the DOT grade	0.5 L
Coolant	Check your handbook	20.5 L
Grease	Grease to DIN 51825 KP 2 K-20 (NLGI 2). PTFE grease for the suspended front axle on HSX	-
Fuel	Diesel	180 L (95-125); 270 L (HSX, with 30 L urea tank)

Specifications


Forterra 95	66 kW
Service inspections	First at 100 h (and within 6 months), then at 500 h, then every 500 h or 12 months
Greasing	Every 50 h; HSX handbook lists 25 grease points

Known problems

Check which Forterra you have

The schedule differs between the 95-125 and the HSX (urea, particle filter, no steering oil row). Part numbers also differ by engine and date, so check against your serial number.

Low-ash oil on HSX

HSX engines with a particle filter need the low-ash (L-SAPS) 15W-40 the handbook names. Ordinary diesel oil can block the filter.

Repair guides

Particle filter trouble on a Forterra HSX: use the low-ash oil (Moderate, 45 minutes): Particle filter warning or reduced power on a Forterra HSX, or an oil service due.
Weak or slow hydraulics: suction filter magnet and gearbox pressure filter (Moderate, 1 hour): Slow or weak lift, a whining hydraulic pump, or gearbox oil filter indicator showing full.
Smoke or low power: Forterra air cleaner set and fuel filter (Easy, 30–45 minutes): Clogging indicator showing, black smoke, loss of power, or fuel filter due.
Clutch and brake pedal free play, steering play and front axle pins (Forterra 500-hour list) (Moderate, 1–2 hours): Clutch slipping or dragging, brakes pulling or low pedal, wandering steering, or knocking from the front axle.

The full step-by-step guides are in Farmyard Workshop once you add your tractor.

Parts list with genuine part numbers

Dealer listings naming this model plus the maker numbers in the site service schedule; check serial range

Engine service

Part	Part number	Qty	Notes
Oil filter (full-flow)	222212637	1	Partao lists this as a genuine Zetor oil filter for the Forterra HSX. Older Forterra: Partao also lists genuine 93407006 for the Forterra range. Check which fits your engine
Air cleaner set (outer 18011914, inner 18011915)	18011914	1	Partao lists the set as genuine Zetor for Forterra Turbo and Proxima models. Check it fits your model and serial number
Air cleaner safety (inner) element	18011915	1	Replaced every 2,000 hours, see the next task

Fuel

Part	Part number	Qty	Notes
Fuel filter	222212648	1	Partao lists this as a genuine Zetor fuel filter for Forterra (HSX, HD, CL), Proxima and Major
Fuel filter	931260	1	Listing names Forterra, Major and UR series; also 93942017: number per FridayParts listing title naming this model

Sources

Open Farmyard Workshop