20
corresponding hole of the two pull rods, and insert the split pin.
2.9.1.7.Fix movable beam 3 and fixed beam 4 with U-bolt 6 and pressing plate 5, as shown in
Fig.7.
2.9.1.8.Adjust the track width of the right front wheel and the two rear wheels according to the
above steps (refer to this step for wheel track adjustment).
2.9.2.Transmission chain tension:
After the machine runs for 100 hours, it is necessary to check the transmission box chain and
adjust the chain tightness. Before inspection, park the machine on a stable ground (such as flat
cement ground), tighten the parking brake, and block the tires on both sides along the rotation
direction of the two rear wheels with wood or brick to prevent the wheel from moving. Check
and adjust the machine after confirming that it is stable. The chain transmission system of
transmission box is shown in Fig.12.
Fig.12
①
.When the chain needs to be tensioned, first loosen the locking nut 6 of the tension
mechanism (counterclockwise rotation is loose).
②
.Then use a spanner to clamp the flat side of the adjusting screw tail, rotate the adjusting
screw 7 clockwise to tension the chain. It should be carried out slowly in the process of rotation.
When the resistance is relatively large when the rotation is felt, it should be turned back 1-2
turns anticlockwise, and finally tighten the lock nut 6 clockwise to complete the tension of a
transmission box chain. Complete the inspection and tension of the other three transmission
boxes according to this procedure.
