This is the building process of a Hong Nor Speed 9.5 with all pro's and con's found.

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Step 1
Rear / Front differential

	Open the bag with label 1 and put all parts in a plastic or glass bowl.
	These are all the parts we need to assemble the 3 differentials.
	In one bag without number you will find all bearings, some hexagon tools, a 5.5 mm / 7 mm wrench, grease and some spare self tapping and metric screws.
	We build the front and rear differential simultaneously. Mark the front and rear dif case with a sharp object like the tip of a knife. Take a 8x16 mm bearing and place it on the out put of the dif case.
	Put a silicone o-ring in the inside of the dif case and press it flush against the bottom.
	Now slide the dif output shaft fully into the dif case. Make sure to use some grease from the white round box on the red marked spot. Make sure the dif output shaft has no flat spots around the groove that will accept the pin of the drive shaft.
	Place on of the 6x15 mm washers over the shaft and press it firmly by hand against the bottom of the dif case.
	Now slide a 2.5x13.8 mm pin through the hole at the side of the dif case and align it with the hole in the dif output shaft.
	Center the pin so both side are equal length.
	Now place the sun gear over the dif output shaft and the pin.
	Close the hole in the side of the dif case with 4x4 mm set screw until it is flush with the outside if the dif case.
	Put two gears on the 4 mm axle. Then place at each side a 4x10 mm washer. Make two of those axles.
	Now place those two axles in cross pattern with gears and washers into the dif case.
	Make sure the crossing of the axles is placed that both flat spots are against each other and both axles are flat on the same surface.
	Take the crown gear and place 8x16 mm bearing on it.
	Now slide the dif output shaft fully into the dif case. Make sure to use some grease from the white round box on the red marked spot. Make sure the dif output shaft has no flat spots around the groove that will accept the pin of the drive shaft.
	Press a o-ring over the dif output shaft fully into the hole.
	Place two of the ??mm washer over the dif output shaft. The kit comes with an optional extra washer to mesh the play inside the differential when finished. First build the differential with two 6x15 mm washers and test if it runs free. If this is not the case remove one of the two 6x15 mm washers and rebuild the differential.
	Slide the pin through the hole of the dif output shaft and make it centered at both sides.
	Place the black gasket on the crown gear and align the holes.
	The place the sun gear over the output shaft and pin.
	Place the gear on top of the dif case and align the holes of the gear and the dif case.
	Fit four 3x12 mm counter sunk self tapping screws.
	Tight them in cross pattern but do not over tight them as this will strip the thread in the plastic.
	Now check if the dif runs freely. If this is not the case remove one of the 6x15 mmm washer as mentioned before. If the dif runs not freely remove the crown gear.
	According to the manual the dif need to be filled with grease 70 %............ But there is no difference mentioned between front and rear. Also the amount of grease delivered in the white round box is not enough for three differentials! As we are busy with the rear differential we normally use some grease to have a free running differential. For the front differential you can use grease or go for the optional silicone oil as explained below.
	So put some grease on the gears for the rear differential with the tip of a screw driver. Then close the differential again as described above..
	As the whole sequence of building is the same for the front differential you might choose to use silicone oil instead of the grease. I used 3.000 Cs half filled for the front and a little grease for the rear. If you do not have silicone oil you might fill the front differential 70 % with grease.
	Now the front and rear differential are ready. Check again for free running of the differential.
	If all three differentials need to be filled for 70% there is not enough grease with the kit!
Comment by  Tecro Tec

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