Assemble of HW50 PTO

⑬ Put the needle bearing into the back end hole of input shaft of PTO, align with the inner hole of spline on the right supplementary axle, and then assemble the input shaft of PTO to the PTO hole of back shell (see Figure 3-74). Put the paper washer of end cover on output shaft of PTO, O ring, and then put the front shell of PTO to its back shell, and its bolt tightening torque is 73-89Nm (see Figure 3-75).

⑭Lay grease on the combined face of front shell of PTO, and post PTO paper washer on the front shell of PTO (see Figure 3-76), and then connect the back shell of PTO with the front shell, the bolt tightening torque is 41-51Nm (see Figure 3-77).

Assemble method of HW70 is similar with the HW PTO; lay seal glue in the middle of front and back shells of PTO, the most important is the glue shall be even to ensure the seal interface not to be leak.

Other Parts Assemble.

⑮ Put the filter screen assembly, o ring, end cover of filter screen into the middle shell by bole, the bolt tightening torque is 21-25Nm (see Figure 3-78), and then tighten the nut connected middle and front shells in turn. Pay attention to install lifting plate (see Figure 3-79 arrowed place).

⑯Lay the transmission assembly on the plane ground by lifter, and pay attention to safety and stability. Install the input shaft and stop ring of two supplementary axles (see Figure 3-80) and its clamp spring (see Figure 3-81).

⑰Measure the thickness of input shaft adjustable washer (there are 3 thickness of washers can be chosen: 0.15、0.20、0.25). gently hit the end of input shaft by copper hammer, let the stop ring of input shaft to be close to the end of front shell, and measure the distance from the end of bearing of input shaft to front shell by depth rule, recorded as A (see Figure 3-82); put the paper washer on the end cover of input shaft, and measure the distance from paper washer to ring ridge of bearing, recorded as B (see Figure 3-83), and then choose the adjustable washer which thickness is between B-A-0.1 and B-A.

⑱Lay suitable grease on the middle of end cover of input shaft and paper washer, and put it with chosen adjustable washer into the front shell by order; the thread of screw must be laid Locitite 242 screw thread tightening glue on, its tightening torque is 41-51Nm (see Figure 3-84); put the end cover of supplementary axle, paper washer into the end of right supplementary axle, and must lay Locitite 242 tightening glue on the bolt thread, its tightening torque is 41-51Nm (see Figure 3-85).

⑲Lay grease on the relevant combined interface of front shell, and after paper washer on end cover of supplementary axle and paper washer of oil inlet align with the hole each other, post them on the front shell. Install the drive top thread of oil pump into the hole of left supplementary axle (see Figure 3-87 arrowed shown), top thread align with the gap of oil pump (see Figure 3-87), and install the oil pump assembly (see Figure 3-88). Notice: there are 3 kinds of oil pump tightening bolt with different length (including Figure 3-88, the bolt 5 is Q150B1040, bolt 6 is Q150B1090, and other bolt is Q150B1070), its thread must lay Locitite 242 tightening glue and its torque is 41-51Nm, among them there are 2 bolts use flat washer, and the screw shall be laid enough plane seal glue on the bolt (see Figure 3-88, bolt 1 and bolt 4),others are spring washer.

⑳Insert pipe 2 of gearbox (see Figure 3-89), connect all oil pipe assemblies, and the tightening torque of hollow bolt is 50±10% N•M, the largest torque is not more than 60Nm (see Figure 3-90).

㉑ Connect fork axle with bush assembly to the front shell (see Figure 3-91); put the fork axle of clutch through the bush hole of front shell, and install flat key (see Figure 3-92), and then pass split fork, fork axle carrier, and connect the split bearing at the same time and connect left and right connection spring. After the fork axle of clutch turning agility, then fasten the fork axle carrier; if turning not agility; gently strike the fork axle carrier. Notice: the screw thread, connected the bolt of carrier of fork axle,must be laid Locitite 242 tightening glue (see Figure 3-91), its tightening torque is 41-51Nm, and tightening bolt torque of split fork axle of clutch is 21-25Nm, and the inner hole of complex bush must be laid on enough grease.

㉒Connect the low pressure oil pipe with the split bearing of clutch and front shell (see Figure 3-93), and install grease mouth (cup) on the front shell; fill enough grease into the split bearing of clutch by the grease mouth (cup) (see Figure 3-94).

㉓Install the paper washer and assembly of small housing onto the transmission assembly which required shift choice agility. The connected bolt head shall lay Locitite 242 tightening glue, and its torque is 41-51Nm (see Figure 3-95). Connect air pipe with the double H valve and range shift cylinder, and pay attention to the air pipe connection not wrong (see Figure 3-96 arrowed place that is two closed end connections and two far end connections). Hollow bolt torque is 42±10%N•M.

Install the reverse switcher, neutral switch, pressure switch of range shift on the small housing, and all the pressure switches torque is less than 35Nm (see Figure 3-96, the arrow directed places of 2, 3, 4, and 5 is reverse switcher, neutral position switcher, range shift switcher and PTO switcher).

㉔Install oil inlet pipe of supplementary gearbox and PTO oil Pipe, M16 hollow bolt torque is 50±10%N•M(see Figure 3-97). Examine the entire oil pipe to ensure there are not leak. Install soft axle carrier (see Figure 3-98)

After the transmission assembly installation, carefully examine the transmission and test the signal condition of all the pressure switchers to ensure that there are not any wrongs, and then equip it with the vehicle.

4. Assemble the Parts of Pull-type Clutch

① After lay suitable Locitite 242 tightening glue on the connected bolt, install the fork axle on the front shell (such as Figure 3-99 shown).

② Let the fork axle pass the fork axle hole, split fork, fork axle carrier in turn and install flat key on the top key groove and locating. Let the fork axle install to the bottom and

another end equipped with flat key. See figure 3-100.

③ Install the low end elastic ring of fork axle by use circlip pliers( see figure 3-101), and then fasten the two bolts connected fork and fork axle (see Figure 3-127).

④ Install assist cylinder carrier, and finish the assembly of control device of pull-type clutch as Figure 3-103 shown.

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