SWDM240B OPERATION & MAINTENANCE MANUAL
5.4.2 Upper/Under-carriage Assembly Installation (with the
Disassembly of Upper-carriage and Undercarriage)
1 Lift under-carriage onto the open, flat, and solid ground, and tracks extend to the maximum
distance.
2 Hoist upper-carriage smoothly and adjust the direction of platform so that left and right
sides of the platform are parallel to the crawler.
3 Rotate the swing bearing of the undercarriage to make the bolt hole aim at the marked bolt
hole of the upper-carriage.
4 Lower the platform of the upper-carriage slowly and adjust its direction to plug the reductor
gear into the position of swing bearing, then lower it continuously till the outer circle of the
swing bearing is plugged into the hole of its installation seat steadily.
5 Rotate the upper-carriage slowly to align the marked center of bolt holes of upper carriage
and undercarriage.
6 Install all the bolts of the swing bearing to its max. Tightening torque is 900N.m.
7 Assemble the oil tubes of the upper-carriage onto the hydraulic swing joints.
FIG. 5-2
5.4.3 Counterweight Assembly
①
Hoist the counterweight to the main beam of the upper-carriage position, then lower it
slowly to drop the two slots on the counterweight bottom to the double beams of the tail part of
upper-carriage, besides make sure that the counterweight is positioned to the end of the front.
②
Fix the bolts on the bottom of the counterweight.
To Next Page
Loading...