Remount Procedure (cont)

TM 55-3810-306-15

bered components.

The crane

9. The remaining procedure to bring the turntable

superstructure should be replaced

ring gear into final contact with the crane carrier deck

plate involves minute movements of the suspended

on the carrier from which it was

superstructure. Rotate the load and use the guide lines

removed.

(See fig 1 for serial

to slowly move the swing, lift, and hoist functions of the

number locations.)

supporting equipment. The aim is to align the match

marks on the swing bearing and carrier deck plate, and

2. Place the crane carrier on a flat level surface.

finally the hole patterns in the two units. Pay close

3. Position the material handling boom head with

attention to the proximity of the counterweight to the top

suspended sling over the superstructure c.g. (see step 6

of the engine hood. Only 3 inches of space exists here,

in the demount procedure) and connect the four falls of

after installation, and minor rocking of the superstructure

the sling to the sling eyes located on the boom base

during remounting could damage the hood. Accurate

section and counterweight. (See the Shipping Data

final matching of the bearing hole patterns is evidenced

Plate (E7-376-002128) and/or fig 2-2 for details on

by the three bolts installed in 4 above (and the eight

superstructure slinging.) 4. Take up slack in the sling

shipping holddown bolts if left in place) dropping through

falls and remove cribbing, planking, supports, and

the carrier deck plate. Allow the superstructure to settle

superstructure tiedowns. Attach guide ropes at the

onto the crane carrier, but keep the sling falls taut.

boom nose and/or the counterweight (use for rotationally

Install washers and nuts on the three new bearing bolts

aligning the superstructure with the carrier during

now in place and tighten snugly, but do not torque.

remount). Inspect the bearing and carrier deck plate

10. Tighten the bolts to secure the swivel assembly

mating surfaces. Mating surfaces should be clean and

base channel to the supporting lugs in the carrier frame.

dry for remounting.

Tighten the bolts one-half turn past snug-tight. Reinstall

5. Insert three new bearing bolts with washers

the drag links according to their coded locations,

under heads through the exposed holes in the turntable

between the turntable base plate and upper end of the

bearing ring at 1, 6, and 16, figures 1 and 2. These

swivel.

bolts will serve to align the entire superstructure bearing

11. Reconnect all air and hydraulic quick couplers at

hole pattern with the matching holes in the carrier deck

the base of the swivel, being careful to mate coded tie

plate. (If the crane is being reassembled after shipment

strap ends. Uncoded ends and electrical plugs are

by flatbed railcar or military semitrailer, the eight 9-1/2-

unmarked and cannot be installed incorrectly. Air and

inch long holddown bolts, used for shipment, may also

transmission lines have color-coded tie straps and

be left in place to align the bearing and carrier deck hole

number-stamped identification.

patterns.) 6.

Lift and swing the suspended

12. Recouple the quick disconnect in the lift retract

superstructure over the crane carrier. Center the boom

circuit.

over the front and try to align the superstructure

13. Start the engine and swing the superstructure

turntable bearing ring with the bearing hole pattern in

(with sling falls still attached) 9to the right. Install three

the carrier deck plate. Use caution to avoid damaging

more bearing bolts-2, 7, and 17, with washers under

the swivel assembly, which is suspended from the

heads, figures 1 and 2. Install washers and nuts and

superstructure turntable base plate.

tighten snugly, but do not torque. If eight shipping bolts

7. Station a rigger on the carrier in view of the

have been left in step 9 above, replace these as they

match marks on the front of the superstructure bearing

appear in this step and step 14. Disconnect the material

ring and carrier deck plate. Also, place a rigger under

handling sling falls and remove.

the carrier to center the swivel assembly support

14. Alternatively swing left and right and install all

channel onto its supporting lugs in the carrier frame, as

remaining bearing bolts, washers and nuts.

it is lowered into place.

8. Lower the superstructure into close contact with

NOTE

the carrier deck plate. The swivel support channel will

Each installed bearing bolt includes

contact its supporting lugs before the turntable bearing

contacts the carrier deck plate. Center the channel on

washers under head and nut. After

the lugs and install the four 3/4-inch bolts through the

initial tightening, torque all bearing

channel and lugs. Install the washers and nuts on the.

bolts per attaching procedure (fig 2)

ends of the bolts. Do not tighten. Unhook the swivel

using available torque wrench.

assembly suspension chains and snap together around

the swivel barrel (see fig 1, detail A).

15. Function check the crane.

A-3