RT700E OPERATOR’S MANUAL
SET-UP AND INSTALLATION
FIXED COUNTERWEIGHT
5.
Take up any slack on the lifting chains (Figure 4-11) and raise the counterweight just enough to remove any pressure on the left and right counterweight pin assemblies.
6.
Remove the two counterweight pin assemblies from the superstructure frame lugs and the counterweight. To remove each pin assembly, push it in and turn it so its roll pin disengages from the related catch on the counterweight.
7.
Lower the counterweight enough to clear the superstructure and remove the counterweight from the crane.
Description The counterweight Figure 4-11 is pinned to the rear of the superstructure and weighs about 5550 kg (12,210 pounds). For cranes without an auxiliary hoist, an additional 672 kg (1478 pounds) counterweight is bolted to the hoist mounting area instead of the auxiliary hoist.
Maintenance
Installation
DANGER Death or serious injury could result from being crushed by a falling counterweight.
1.
Fully extend and set the outriggers.
2.
Rotate the superstructure so the counterweight will be over the front of the carrier to gain additional clearance.
CAUTION
DANGER Ensure the counterweight pin assemblies are installed properly and are secure in their catches.
Removal 1.
Fully extend and set the outriggers.
2.
Rotate the superstructure so the counterweight is over the front of the carrier to gain additional clearance.
When lifting/handling the counterweight, keep the chains/ straps vertical to minimize side pull on the lifting lugs. NOTE:
The counterweight weighs approximately 5550 kg (12,210 pounds).
NOTE:
Use of a forklift to install or remove the counterweight is not recommended. Damage or misalignment of the counterweight can result if a fork lift is used for installation or removal.
3.
CAUTION When lifting/handling the counterweight, keep the chains/ straps vertical to minimize side pull on the lifting lugs. NOTE:
The counterweight weighs approximately 5550 kg (12,210 pounds).
NOTE:
Use of a forklift to install or remove the counterweight is not recommended. Damage or misalignment of the counterweight can result if a fork- lift is used for installation or removal.
3.
Attach an adequate lifting device to the counterweight.
4.
Adjust the four counterweight leveling bolts to provide maximum clearance of the counterweight from the superstructure.
Attach an adequate lifting device to the counterweight and lift the counterweight into place on the superstructure, aligning the mounting holes on the counterweight to the holes in the superstructure.
4.
Secure the counterweight to the superstructure with the two counterweight pin assemblies. To secure each pin assembly, push it in and turn it so its roll pin engages the related catch on the counterweight. Then release the pin assembly so its spring can hold the pin assembly in place.
5.
Remove the lifting device from the counterweight.
6.
Using the four counterweight leveling bolts, level the counterweight and eliminate any relative movement between the counterweight and turntable. Maximum height of counterweight shall not exceed 6.35 mm (0.25 in) out of level with the turntable bearing when measured from either counterweight outer edge.
Published 05-23-08, Control # 072-05
4-19
4
