Fordson Super Major service schedule

1. Stop the engine.
2. Remove the oil bowl, tip out the old oil and dirt and clean the bowl.
3. Remove and thoroughly clean the filter gauze.
4. Check the domed pre-cleaner top and clear any blocked vanes or slots.
5. Refill the bowl to the level mark with engine oil and refit everything.

Tools: Drain tray, Paraffin, Rags

1. Clutch: free travel should be 1.5–2 in (38–51 mm). Loosen the operating rod clevis locknut, remove the clevis pin, move the clevis along the rod to set the travel, refit and lock.
2. Double clutch: remove the stop pin, engage the PTO and check it stops when the pedal is fully down; shorten the rod if not. Refit the stop pin and check gears change without clutch spin.
3. Brakes (housings cold): slacken the lock nut under one brake housing, tighten the adjusting screw until the brake locks, back it off 1.5 turns and lock it.
4. Disconnect the return spring, set the pull rod nut until the pedal just touches its upper stop, then slacken 1.5 turns to give 1.5 in (38 mm) free travel. Reconnect the spring and do the other side.
5. Test that both brakes act evenly.

Tools: Spanners, Rule

1. Grease the steering gear upper bearing, rear wheel bearings, front wheel bearings, clutch and brake cross-shaft and the levelling box.
2. Check the gearbox and rear axle oil levels and the power steering oil level (if fitted).
3. Check tyre pressures and the battery electrolyte level.
4. Heavy-duty clutch only: screw the release bearing greaser cap down one turn every day and refill it with lithium high-melting-point grease, not chassis grease.

Tools: Grease gun, Rags

1. Run the engine to working temperature, park level, lower implements and stop the engine.
2. Drain the sump oil while warm, then refit the plug.
3. Remove the filter bowl on the right-hand side of the engine, discard the element, clean the bowl and fit a new element and seal.
4. Refill to the FULL mark on the dipstick (left-hand side of the engine) with heavy-duty oil of the right grade.
5. Run the engine, check the oil warning light goes out and there are no leaks, then stop and recheck the level.

Tools: Drain tray (10 L), Spanners, Funnel, Rags, Gloves

1. Remove the crankcase breather, tip out the old oil and rinse the gauze in paraffin. Refill with fresh oil and refit.
2. Remove the governor air filter capsule, wash it, oil it lightly, let surplus oil drain off and refit it.

Tools: Paraffin and tray, Rags

1. Check the total movement of the belt; it should not exceed 1/2 in (1.27 cm).
2. To adjust, slacken the generator mounting bolts, move the generator away from the block and tighten the bolts securely.
3. Also oil the generator rear bearing (200-hour item) and check the chaff screens are clear.

Tools: Spanners, Rule

1. Check the steering box oil level and top up with gearbox-grade oil.
2. Check the steering arm clamping bolts are tight.

Tools: Spanners

1. Remove the air cleaner from the tractor.
2. Strip it down and clean every part thoroughly.
3. Refill the bowl to the level mark, reassemble and refit with all connections tight so no unfiltered air gets in.

Tools: Spanners, Parts-washing tray and paraffin, Rags

1. Unscrew the centre bolt and detach the filter container from the head.
2. Remove the element and clean the container with a brush and clean fuel. Do not use a rag or touch it with dirty hands.
3. Fit the new element and a new rubber sealing ring. Tighten the centre bolt with a short spanner and moderate pressure only.
4. Bleed the fuel system at the filter inlet, filter outlet and injection pump bleed screws until fuel flows free of air.

Tools: Short spanner, Brush and clean fuel, Container

1. Remove the rocker cover, disconnect the leak-off pipe connections and remove the pipe.
2. Disconnect the injector pipes at the injectors, slacken the unions at the pump and cap all open ends.
3. Remove the injectors and fit reconditioned or new ones. Bleed the system before starting.

Tools: Spanners, Blanking caps

1. Run the engine to working temperature, then stop it.
2. Remove the rocker cover to air cleaner pipe. If a decompressor is fitted, put the lever down, remove its screw and withdraw the lever and flange.
3. Remove the six screws and lift off the rocker cover and gasket.
4. Turn the engine until No. 1 valve (from the front) is fully closed and check the gap between the valve rotator cap and rocker: inlet 0.015 in (0.38 mm), exhaust 0.012 in (0.30 mm).
5. To adjust, slacken the locknut and turn the screw clockwise to close or anti-clockwise to open the gap, then lock it.
6. Turn the engine and repeat for the other valves. Refit the cover.

Tools: Feeler gauges, Ring spanner, Screwdriver

1. Work the tractor so the oil is warm, then park level and stop the engine.
2. Drain the gearbox, flush it, refit the plug and refill with the correct grade.
3. Remove and check the left-hand fuel tank bracket bolt on top of the gearbox; it is drilled as the gearbox breather and must be clear.

Tools: Drain tray (25 L), Spanners, Funnel or pump

1. Lower the linkage, park level and stop the engine.
2. Drain the rear axle, flush it and refit the plug.
3. Remove the hydraulic pump inlet filter screen and cover, clean the gauze screen and the magnetic filters, and refit them with the gasket correctly placed.
4. Refill with the correct grade to the level, run the engine, work the lift and recheck.

Tools: Large drain tray (45 L), Spanners, Paraffin, Funnel or pump

1. With the engine cool (never remove a pressure cap while hot), drain the system.
2. Flush it thoroughly with a hose pipe and hose the radiator core to wash out dirt and chaff.
3. Refill slowly with clean soft water (anti-freeze mix in winter) to avoid an air lock.

Tools: Drain tray, Hose pipe