Valmet 8400 service schedule

Valmet 6000 series (Mega) · 1990s (covered by the Valmet 6000–8950 service manual, 1994–2002 editions)

Covers the Valmet 8400 (also 6900, 8000, 8050, 8100, 8150, 8200, 8350, 8450, 8550, 8750, 8950 and the HiTech versions).

Every maker's service job for the Valmet 8400, 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.

Track your 8400 for free

Versions: 620 DS turbo, 103 kW (early tractors and 8400E); 620 DS turbo, 110 kW (serial K32135 to L33320); 620 DSIE turbo and intercooler, 118 kW (from serial L23130)

Service intervals

Job	When
Weekly greasing and checks (named points)	every 50 hours
Engine oil and filter change	every 250 hours
Engine air filter: clean main element	every 250 hours
Cab ventilation filter: clean and change	every 250 hours
250-hour greasing and checks	every 250 hours
Transmission and hydraulic pressure filters change	every 500 hours
Fuel water trap clean	every 500 hours
Air filter safety element change	every 1,000 hours or every year
Transmission/hydraulic oil, pressure filters and suction strainer	every 1,000 hours or every year
Fuel filters change	every 1,000 hours or every year
Front axle differential and hub oil change (4WD)	every 1,000 hours or every year
Valve clearance adjustment	every 1,000 hours or every year
1,000-hour jobs: bearings, ring gear, toe-in, fuel tank	every 1,000 hours or every year
Coolant, brake fluid and breather (2,000 hours)	every 2,000 hours or every 2 years
Injectors, alternator and starter check	every 2,000 hours or every 2 years
Engine vibration damper change and turbo check	every 4,000 hours

Service jobs and parts

Weekly greasing and checks (named points)

Chassis · every 50 hours

The 50-hour list names greasing the three-point linkage and towing hook, the brake mechanism (EP grease) and the front axle brackets and steering nipples, and checking the fan belt and water traps.

Part	Qty	Notes	Part number
Grease	1	EP grease for the brake mechanism; check your handbook for the others	check your handbook

Step-by-step

Clean each nipple before you fit the gun.
Grease the three-point linkage and towing hook.
Grease the brake mechanism with EP grease.
Grease the front axle brackets and steering nipples.
Check the fan belt tension and look at the water traps.

Tools: Grease gun, Rags

Engine oil and filter change

Engine · every 250 hours

The service manual says change the engine oil and filter every 250 hours, and service more often in severe conditions.

Part	Qty	Notes	Part number
Engine oil	1	15W-40 or 10W-30 for the season, API CG-4/CH-4, ≈19 L with the filter. Aztec Oils match: EMPROTEC SHPD-X 15W-40	check your handbook
Engine oil filter (spin-on)	1	Check your handbook	check your handbook

Step-by-step

Run the engine to working temperature, park level, lower implements, apply the parking brake and stop the engine.
Remove the sump plug and drain the oil. It will be hot, so wear gloves.
Clean round the filter, unscrew it and look at the old oil and filter for dirt or metal.
Smear clean oil on the new filter's seal and screw it on by hand.
Refit the sump plug and fill with about 19 L of oil.
Start the engine, check for leaks, stop it, wait a few minutes and check the dipstick.

Tools: Drain tray (25 L), Spanner for the sump plug, Filter wrench, Funnel, Rags, Gloves

Engine air filter: clean main element

Engine · every 250 hours

The service manual says clean the engine air filter every 250 hours. On tractors with a horizontal filter and ejector pipe, the cyclone (suction housing hole plate) is cleaned every 50 hours as well.

Step-by-step

Stop the engine and open the air filter housing.
Take out the main element and leave the safety element in place.
Blow the element out from the inside with low-pressure air. Do not knock it.
Hold a torch inside it and look for holes or split seals. Fit a new one if it is damaged.
Wipe out the housing and refit the element and cover.

Tools: Compressed air with a low-pressure nozzle, Clean rags, Torch

Cab ventilation filter: clean and change

Cab · every 250 hours

The service manual says clean the cab ventilation air filter every 250 hours, and change it (washing the recirculation filter, if fitted) every 1,000 hours or yearly.

Part	Qty	Notes	Part number
Cab ventilation air filter	1	Change at every 1,000-hour or yearly service; check your handbook	check your handbook

Step-by-step

Remove the cab air filter cover.
Blow the filter out gently against the normal air flow.
At the 1,000-hour or yearly service, fit a new filter and wash the recirculation filter.
Refit the cover.

Tools: Compressed air with a low-pressure nozzle, Screwdriver

250-hour greasing and checks

Chassis · every 250 hours

The 250-hour list adds greasing the powered front axle joints and the door and window hinges and locks, and checking the brake (and clutch) fluid level, wheel nuts and tyre pressures.

Part	Qty	Notes	Part number
Grease	1	Check your handbook	check your handbook

Step-by-step

Grease the front axle joints on the powered axle.
Grease the door and window hinges and locks.
Check the brake fluid level (and the clutch fluid from serial 668103) and top up with SAE J1703 fluid.
Check the wheel nuts and bolts and the tyre pressures.

Tools: Grease gun, Torque wrench, Tyre gauge

Transmission and hydraulic pressure filters change

Hydraulics · every 500 hours

The pressure filters are changed more often than the oil: first at the 100-hour warranty service, then at 250 hours, then every 500 hours. This filter-only task covers the 500-hour change between oil changes.

Part	Qty	Notes	Part number
Transmission/hydraulic pressure filter	1	Check your handbook for the number of filters and the part number	check your handbook

Step-by-step

Lower implements, stop the engine and apply the parking brake.
Clean round the filters.
Unscrew the filters and catch the oil.
Oil the new seals and fit the filters by hand.
Start the engine, check for leaks and top up the transmission to the dipstick mark.

Tools: Filter wrench, Drain tray, Rags

Fuel water trap clean

Fuel · every 500 hours

The service manual says check the water trap every 50 hours and clean it every 500 hours. On the 8400 there are also traps under both fuel filters.

Step-by-step

Stop the engine and keep naked flames away.
Drain the water traps, including those under the fuel filters.
Remove the main water trap bowl, empty and clean it and its gauze.
Refit with a good seal and bleed the fuel system if needed.

Tools: Container, Spanner, Rags

Air filter safety element change

Engine · every 1,000 hours or every year

The service manual says change the safety filter inside the engine air filter every 1,000 hours or yearly.

Part	Qty	Notes	Part number
Air filter safety (inner) element	1	Check your handbook	check your handbook

Step-by-step

Stop the engine and open the air filter housing.
Take out the main element, then the safety element.
Wipe the housing clean without letting dirt into the intake.
Fit the new safety element, refit the main element and close the housing.

Tools: Clean rags

Transmission/hydraulic oil, pressure filters and suction strainer

Transmission · every 1,000 hours or every year

The service manual says change the transmission and hydraulic oil and clean the suction strainer every 1,000 hours or yearly. The pressure filters are due then too, so they are included.

Part	Qty	Notes	Part number
Transmission/hydraulic oil	1	Valmet HT 60 or HT 100, API GL-4; ≈34 L (later frames 45–55 L), check your handbook. Aztec Oils match: AGRITEC UTTO	check your handbook
Transmission/hydraulic pressure filter	1	Check your handbook	check your handbook
Suction strainer seal	1	Check your handbook	check your handbook

Step-by-step

Work the tractor so the oil is warm, then park level, lower the linkage and stop the engine.
Drain the transmission and hydraulic oil.
Take out the suction strainer, wash it in clean solvent, dry it and refit it with a good seal.
Change the pressure filters.
Refit the plugs and fill to the dipstick mark.
Run the engine, work the linkage and spool valves, then recheck the level with the arms lowered.

Tools: Large drain tray (60 L), Spanners, Filter wrench, Parts cleaner, Pump or funnel

Fuel filters change

Fuel · every 1,000 hours or every year

The service manual says change the fuel filters every 1,000 hours or yearly.

Part	Qty	Notes	Part number
Fuel filter	2	Check your handbook for the number fitted and the part number	check your handbook

Step-by-step

Stop the engine and keep naked flames away.
Clean round the filters, remove them and catch the fuel.
Fit new filters with new seals.
Bleed the fuel system with the hand primer until fuel comes out free of bubbles, then start the engine and check for leaks.

Tools: Filter wrench, Container, Rags

Front axle differential and hub oil change (4WD)

Front axle · every 1,000 hours or every year

The service manual says check the front axle differential and hub oil every 500 hours and change it every 1,000 hours or yearly.

Part	Qty	Notes	Part number
Front axle oil	1	SAE 80W-90 API GL-5 (LS): ≈8 L Dana differential plus ≈1 L in each hub. Aztec Oils match: TRANSMATEC EP-5 80W-90	check your handbook

Step-by-step

Park level and stop the engine.
Drain the differential housing.
Turn each front wheel so the hub plug is at the bottom and drain the hub.
Fill the differential to its level plug, then turn each hub to the level position and fill to the hole.
Refit all plugs and check for leaks after a short drive.

Tools: Drain tray, Spanners, Oil pump or squeeze bottle

Valve clearance adjustment

Engine · every 1,000 hours or every year

The service manual puts valve adjustment in the 1,000-hour or yearly service. The clearance is 0.35 mm, hot or cold.

Part	Qty	Notes	Part number
Rocker cover gasket	1	Check your handbook	check your handbook

Step-by-step

Remove the rocker cover.
Turn the engine so each cylinder in turn is at top dead centre on compression, following the service manual.
Check and set the clearance to 0.35 mm, inlet and exhaust.
Tighten the lock nuts, recheck and refit the cover.

Tools: Feeler gauges, Spanners and screwdriver, Engine turning tool

1,000-hour jobs: bearings, ring gear, toe-in, fuel tank

Chassis · every 1,000 hours or every year

The 1,000-hour or yearly list also includes greasing the rear drive axle bearings and the flywheel ring gear, checking the front wheel toe-in and cleaning the fuel tank. HiTech tractors also have the accelerator pedal calibrated.

Step-by-step

Grease the rear drive axle bearings and the flywheel ring gear.
Check and adjust the front wheel toe-in.
Drain and clean the fuel tank sediment.
On HiTech models, have the accelerator pedal calibrated.

Tools: Grease gun, Tape measure, Drain tray, Spanners

Coolant, brake fluid and breather (2,000 hours)

Cooling · every 2,000 hours or every 2 years

The service manual says every 2,000 hours or every other year change the engine coolant, the brake fluid (and clutch fluid from serial 668103) and the transmission housing breather.

Part	Qty	Notes	Part number
Coolant	1	Water and antifreeze to ASTM D3306-86a or BS 6580:1985, ≈24–30 L depending on the cooling system	check your handbook
Brake fluid	1	DOT 3. SAE J1703. Aztec Oils match: HYDRATEC DOT 4 BF	check your handbook
Transmission housing breather	1	Check your handbook	check your handbook

Step-by-step

With the engine cold, drain the radiator and block, refill with the right mixture and bleed out air.
Bleed the brakes (and the clutch) with fresh fluid until clean fluid comes through.
Change the transmission housing breather.
Run the engine, let it cool and top up the coolant.

Tools: Large drain tray, Funnel, Antifreeze tester, Bleed tube and jar

Injectors, alternator and starter check

Fuel · every 2,000 hours or every 2 years

The service manual says check and clean the injectors and check the alternator and starter motor every 2,000 hours or every other year.

Step-by-step

Have the injectors removed, tested and cleaned, or book it with a dealer.
Have the alternator and starter motor checked.

Tools: Injector tester or dealer service

Engine vibration damper change and turbo check

Engine · every 4,000 hours

Every 4,000 hours the service manual says change the rubber vibration damper on 6-cylinder engines (the 8400 is included; the 8200 and 8450–8750 are not) and have the turbocharger checked at an authorised workshop.

Part	Qty	Notes	Part number
Crankshaft rubber vibration damper	1	Check your handbook	check your handbook

Step-by-step

Book the tractor in with a Valtra dealer.
Have the crankshaft rubber vibration damper changed.
Have the turbocharger checked.

Tools: Dealer service

Oils, fluids and capacities

System	Oil or spec	Capacity
Engine	Valmet 620 DS / 620 DSIE 6.6 L 6-cylinder turbo diesel (108 × 120 mm, 16.5:1)
Engine oil	SAE 15W-40 (+40 °C down to −10 °C) or SAE 10W-30 (+30 °C down to −20 °C), API CG-4 / CH-4 (2002 edition of the chart)	≈19 L including the filter
Coolant	≈24 L (≈25 L with the opening front grille); ≈28 L with an expansion tank (≈30 L on 2001 model 8400s). Water and antifreeze to ASTM D3306-86a or BS 6580:1985.
Valve clearances	0.35 mm inlet and exhaust, engine hot or cold (from the same manual's valve adjustment page, as used for the Valmet 6400)
Transmission and hydraulics (shared)	Valmet HT 60 (−30 to +30 °C) or HT 100 (−10 to +40 °C), API GL-4 (G2-98)	≈34 L (max 43 L; extra max 50 L). HiTech, 8050 on and frames from J02316: max 45 L, extra max 53 L. Later 6200–8950 frames: min 45, max 55, extra max 65 L. Check the frame-number list in your handbook
Powered front axle differential	SAE 80W-90, API GL-5 (LS)	≈8 L (Dana) / ≈6 L (Carraro, industrial)
Powered front axle hubs	SAE 80W-90, API GL-5 (LS)	≈1 L each side (Dana); ≈1.5 L each side on the industrial axle
Brake fluid reservoir / clutch fluid reservoir	Brake fluid SAE J1703	≈0.3 L / ≈0.2 L
Fuel tank	Diesel	≈165 L; extra tank +82 L metal or +121 L plastic
Window washer	Washer fluid	≈3 L

Specifications


Engine output (DIN)	620 DS: 103 kW at 2,200 rpm (520 Nm at 1,550 rpm); 620 DS from K32135: 110 kW (625 Nm at 1,400 rpm); 620 DSIE from L23130: 118 kW (650 Nm at 1,400 rpm)
Low idle / max no-load speed	750 rpm / 2,400 rpm
Compression pressure	Minimum 24 bar at working temperature and starting speed; no more than 3.0 bar between cylinders
Related 6-cylinder models in the same chart	8000: 620 D 73.5 kW; 8100: 620 D 88 kW; 8200: 634 D 7.4 L 95.5 kW

Known problems

Which transmission fill

Later frames take much more transmission oil (min 45, max 55 L) than early ones (34 L). Check the frame-number list in your handbook before filling.

Engine version

The 8400 had three outputs (103, 110 and 118 kW). Quote the serial number when ordering engine parts.

Coolant capacity varies

From ≈24 L to ≈30 L depending on the grille and expansion tank. Fill to the mark rather than by quantity.

Repair guides

Foot brake adjustment, pushrod clearance and bleeding (Moderate, 1–2 hours): Long pedal travel, pulling to one side with pedals latched, spongy pedal, brakes dragging.
Clutch free travel adjustment and disc checks (Moderate, 30 minutes to adjust; 1–2 days for a disc): Clutch slips under load, drags or will not free, pedal does not come back up, free travel gone.
Bleeding the fuel system, thermostart and feed pressure check (Moderate, 30 minutes to bleed; 1 hour for a pressure check): Engine will not start or dies after a filter change or running dry, misfires, loses power under load, cold start aid not working.
Injector removal, testing and refitting (Hard, 3–4 hours including testing): Black smoke, knocking, misfire on one cylinder, poor starting, high fuel use; due at the 2,000-hour check.
Trailer air brakes: pressure check and hand brake setting (Moderate, 1 hour): Trailer brakes weak or not releasing, trailer not braking on the hand brake, low pressure at the couplings.

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

Parts list with genuine part numbers

Valtra/Valmet 8450 tractor (Mega series) AGCO parts book (no serial range in book title; serial splits noted per row)

Brakes

Part	Part number	Qty	Notes
Brake master cylinder K1	V30294600	1
Master cylinder repair kit (K1)	V30418100
Brake pedal, right	V31537400
Brake pedal, left	V31537300
Pedal fork L=103	V31773700
Pedal spring	V70018600
Pedal needle roller bearing	V70038200
Parking brake safety switch 12V (from K51216)	V33558700
Parking brake lever assembly	V31581840
Parking brake lever rod	V32852400
Parking brake rod	V32852200
Parking brake knob	V32851900
Brake slave cylinder K1	V30181510	1
Actuating disc kit 40/50 km/h (to L11329/L01203)	V411020
Actuating disc kit 40/50 km/h (from L11330/L01204)	V34124200
Friction plate, 40 km/h organic (to L11329)	V32800500		Wear part
Brake disc, organic Z=27 (from L11330, 40 km/h and 50 km/h)	V34401400		Wear part
Brake disc, 50 km/h ceramic (to L01203)	V30184800		Wear part
Intermediate plate, 40 km/h organic (to L11329)	V45037300		Wear part
Brake disc, intermediate, organic 224x4.5 (from L11330/L01204)	V34123900		Wear part
Intermediate plate, 50 km/h ceramic (to L01203)	V411040		Wear part
Counter plate, 40 km/h (to K36107)	V30171200
Counter plate, 40 km/h (from K36108)	V33709210
Brake lever	V31837030
Brake spring	V31841400
Brake fork	V31820520
Ball 7/8 inch	V412960
Spring	V412810

Clutch

Part	Part number	Qty	Notes
Clutch (pressure plate) D=350 (K3, K4, K5)	V32831400	1
Clutch disc D=350 (K3, K4, K5)	V35651400		Wear part
Clutch disengaging shaft	V32260500
Clutch release bearing	V30208100
Clutch ball bearing 40x68x15	VLA1992
Hydraulic clutch O-ring	VKH4251
Clutch O-ring	VKH4180
Clutch sleeve	V32241610
Clutch sleeve	V32241610
Clutch pedal (from 659478)	V32524510
Clutch pedal (K1, from E44315)	V32524530
Clutch pedal (from K51216)	V32524550
Clutch master cylinder K1 (from 668103)	V33031410	1
Clutch fluid reservoir (from 668103)	V33044900
Clutch hose L=500 (from 668103)	V33324900
Clutch pedal rubber shield	V32553000

Engine

Part	Part number	Qty	Notes
Engine oil filter	V836662580		Wear part
Oil cooler	V836129315
Oil cooler seal ring	V835331586
Oil pressure valve gasket	V836322190
Engine air filter cartridge (item 4)	V836862573		Wear part
Engine air filter cartridge (item 3)	V836862574		Wear part
Air filter assembly	V33094100
Air filter assembly with intercooler D=300 (from K26511)	V33707410
Air filter assembly D=300 (from K35446)	V33094110
Air filter gasket L=960	V33572300
Air filter sealing rubber	V33046000
Air filter sensor 6.5 kPa	V33389600
Fuel filter, spin-on	V836339371		Wear part
Fuel filter assembly	V836339370
Fuel filter housing	V836015959
Fuel filter head	V836015919
Fuel filter O-ring	V836015142
Fuel filter O-ring	V835330014
Fuel filter seal kit	V835330015
Fuel filter gasket	V836015147
Fuel pre-filter, water separator (to J7033)	V836640098		Wear part
Fuel pre-filter bowl	V836015144
Fuel filter, spin-on (pre-filter, from J7034)	V836862563		Wear part
Fuel filter assembly (from J7034)	V836859301
Water pump with pulley	V836864484	1
Water pump shaft	V836847467
Water pump impeller	V836846303
Water pump backplate	V836864472
Water pump bearing	V610063044
Water pump shaft seal	V614102636
Water pump gasket	V835339425
Water pump gasket	V836864471
Water pump V-belt pulley	V836855510
Starter motor (from F4506)	V836640949	1
Starter motor (from G13501)	V836640940	1
Starter bearing bush	V836640951
Starter brush holder kit	V836640965
Starter carbon brush	V836640966
Starter parts kit	V836640967
Starter solenoid	V836640958
Starter bearing bush	V836640959
Alternator (to L17108)	V836640927	1
Alternator (from L17109)	V836666225	1
Alternator V-belt	V684121375		Wear part
Radiator with cap, 5 row	V33098510
Radiator cap, bayonet 50 kPa	V31679810
Upper radiator hose	V33098100
Lower radiator hose	V33043500

Front axle and steering

Part	Part number	Qty
Steering cylinder 2WD 50/22-235	V30252910
Steering cylinder seal set (2WD, K1)	V730680
Steering cylinder 4WD Sige CS17/DS17 D=65/40	V31797410	1
Steering cylinder seal set (Ognibene)	V31797510
Steering cylinder seal set (Pacoma)	V35146100
Tie rod and ball joint assembly, Sige CS17 (to P18114)	V31798410	2
Tie rod and ball joint assembly, Sige DS17 industrial (from 116/94)	V31882720
Tie rod and ball joint assembly, Sige DS17 industrial (to 115/94)	V31882710
Axial joint	V31798510
Tie rod	V31798600
Tie rod, reinforced	V31798610
Ball joint, DS17 industrial (to 115/94)	V31882200
Ball joint, DS17 industrial (from 116/94)	V31882210
Tie rod seal set	V33427200
Rubber shield, industrial	V33427300
Front axle CS17 V SD.00	V31633000
Front axle Hi-Lock CS17 I.01	V32831500
Axle housing, right	V31790000
Axle housing, left	V31790400
Axle housing, right, Hi-Lock	V31967400
Axle housing, left, Hi-Lock	V31967500
Axle bearing bush	V31790300
Front axle shaft seal 58-80x16.5	V31800500
Axle ball bearing	V31790700
Jointed (kingpin) housing, left	V31790910
Jointed (kingpin) housing, right	V31791210
Slipper ring D=165/155	V31791100
Slipper ring D=165/163	V31791110

Hydraulics

Part	Part number	Qty
Hydraulic pump Sauer S1 25+8 (from 658900)	V31852330	1
Hydraulic pump Bosch S2 25+8 (650 final drives, from 5.1998)	V32863100	1
Tandem hydraulic pump Bosch S2 25+11 (from K17307)	V33561800	1
Hydraulic filter cartridge	V20656300	1
Hydraulic pressure filter cartridge (to F16406)	V20639600	1
Hydraulic pressure filter seal kit (to F16406)	V20671900
Hydraulic filter housing (from F16407)	V31539420
Hydraulic filter seal (from F16407)	VKH4914
Hydraulic filter O-ring	VKH4150
Safety valve Sauer 23 MPa	V32465620
Safety valve Bosch 23 MPa	V33442800
Hydraulic breather filter	V36073900
Valve seal kit (S1)	V32051000
Quick coupling seal set	V31887200

Rear linkage

Part	Part number	Qty
Lower link arms L=980 Cat 3/2	V32677800
Lower link arm, hook end, right, L=980 Cat 3	V30220030	1
Lower link arm, hook end, left, L=980 Cat 3	V30220130	1
Lower link, right, L=940 Cat 3 (from K36108)	V34281500	1
Lower link, left, L=940 Cat 3 (from K36108)	V34281600	1
Lower link rod clamp Cat 3	V31972500
Lower link guide cone Cat 3/2	V32677700
Lower link guide cone Cat 3	V32773400
Top link L=635-880 M33x3 (from H36436)	V33392100
Top link L=565-810 M30x3	V32894400
Top link turnbuckle Cat 2 M30x3	V32962100
Top link rod clamp	V32077510
Top link rod clamp	V32959100
Top link retainer	V31878120
Top link retainer (from H45101)	V32894510
Lift cylinder, right, Ognibene 100x40x185	V34393400	1
Lift cylinder, left, Ognibene 100x40x185	V34393500	1
Lift cylinder seal kit	V34495200
Lift cylinder rod	V34493600
Lift cylinder piston	V34493800

Cab wipers, mirrors

Part	Part number	Qty	Notes
Wiper blade Bosch L=500	V30302100		Wear part
Wiper blade, windscreen Doga L=450/480	V32702200		Wear part
Wiper arm, windscreen	V30302000
Windscreen washer reservoir	V30184500
Windscreen washer pump	V30240700
Wiper motor 12V (Doga)	V32911600	1
Side mirror assembly, right	V34384400
Side mirror assembly, left	V34019500
Mirror arm, right	V34302100
Mirror arm, left	V34302200
Mirror head	V33608300
Mirror replacement glass	V30581300
Mirror mounting	V30581400

Sources

Open Farmyard Workshop