Gradall 544D (9136-4003) Service Manual User Manual download pdf (Page 334)

9.7

SEPARATING BOOM SECTIONS

Separating one boom section from another is not difficult. However, care and attention to

detail are required. Components should be clearly identified to aid in re-assembly. Work

on the boom assembly is performed with the assembly upside-down. This is necessary

because of the depth of the fourth section nose. A crane and stanchions (horses) of

sufficient capacity must be available to lift and hold the weight of the boom assembly and

sections. The complete assembly weighs approximately 8220 lb. There must also be

adequate room for the inner boom section being removed to clear the outer boom section.

REMOVING THE CROWD CYLINDER

With the boom assembly turned upside-down, the crowd cylinder is easily removed.

Removal procedure is as follows:

Attach lifting tackle to the cylinder and take the weight to aid in pin removal.

Remove pin and snap ring.

Remove the crowd cylinder.

Remove the cylinder and store in a designated area.

BOTTOM, COMPLETE BOOM ASSEMBLY:

SHOWING CROWD CYLINDER

SEPARATING BOOM-SECTION 2/3/4 FROM BOOM-SECTION 1

It is best to remove the boom sections in the order in which they were assembled. If a

section needs to be separated, this presents an excellent opportunity to check all sections

for serviceability. The fourth, third and second section should be removed from the first

section as a package.

COMPLETE BOOM ASSEMBLY: REAR VIEW

CAUTION

FORM NO. 29702

544C/544D BOOM MAINTENANCE

Note!

If the boom sections are to be

separated and worked on

individually, rotate the boom

assembly 180°. It is best to work

on individual sections upside

down, for easy access. The nose of

boom-section 4 makes it

impractical to place it level at a

normal working height.

If there is no problem with the tilt cylinder, it may be left intact

during removal of boom-section 4. It is best to remove the tilt

cylinder before the booms are separated. See Section 9B, Carriage

Tilt Cylinder Removal/Reinstallation starting on page 9.2

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Gradall 544D (9136-4003) Service Manual User Manual Page 334