(1) 54 ready Dongfanghong tractors scrapped gearbox body (with its flat and porous, similar objects can also be), the deformation of the gear chamber cover on the gearbox plane.

(2) to find six long perforated plate and three sets of suitable bolts. Each bolt with two platens, lower platen along a cross in the box under the hole on the plate resting on the deformation of the housing, the other end of the plate below plus iron, with a bolt nut is screwed into the role played puller put the gear chamber cover three different positions around on the plate with the nut after the gear chamber cover is secured between the transmission of plane and platen.

(3) The first fastening the contact plane better place, and then heated with a blowtorch warping the worst place. Be careful not to prolonged heating at one point, the temperature does not exceed 400, while heating fastening nut, so warped gearbox plane near the plane slowly until all the contact, and then allowed to cool, loosen the nut.

(4) test platform. If you are still not fully recovered partially deformed, gears can be covered in a relatively flat place mat room 3mm5mm flat steel, the deformed portion vacant, then the above method of heating, tighten the nut, repeated several times, until it meets the requirements of flatness.

Engine timing transmission mechanism installed properly

(1) determine the position on the first cylinder stop. The dial indicator holder placed near the first cylinder. Crank the engine, when the piston up to near top dead center, so that the dial indicator probe touches the piston crown; continue to slowly crank the engine, the moment when a sudden reversal of the hands, the hands finger zero, this point is TDC. At this point, it should be aligned with the flywheel scribing 1/4 groove on the cylinder.

(2) determine the position of the first cylinder fuel supply advance angle. Slow reversal of the crankshaft, so that the flywheel scribing 1/4 from the cylinder groove approximately 7.0 8.4 teeth, which is equivalent to the first cylinder fuel supply advance angle is 233. Unscrew dipstick on the side of the flywheel housing M8 plug , so that with the flywheel holes 6.2mm diameter d alignment as use of 6.0mm diameter wire into d, said first cylinder is in the compression BTDC 233.

(3) determine the fuel pump first oil cylinder starting position. Since the phase of each cylinder has been ensured at the time of manufacture, so you can simply adjust the first cylinder. At this point, remove the fuel pump of the first cylinder high-pressure tubing, to enter the low-pressure fuel pump oil, turn the fuel pump camshaft, the plunger upward. When the piston top edge just closed the plunger into the sleeve, when back to the hole, the first cylinder oil pipe fitting on the plane began to squirm.