Skytrak 6036 Service Manual Bedienungsanleitung PDF herunterladen (Seite 43)

3.3

Model 6036 Legacy

Boom

3.2 BOOM SYSTEM

3.2.1 Boom System Description

The boom operates via an interchange among the

hydraulic and mechanical systems. Components

involved include the joystick, attachment tilt cylinder,

extend/retract cylinder, lift/lower cylinders, slave

cylinders, extend and retract chains, various pivots,

supporting hardware and other components.

3.2.2 Boom System Operation

The boom assembly consists of inner, intermediate and

outer booms. Boom extension and retraction is

accomplished via hydraulic power and chain movement.

As the extend/retract hydraulic cylinder, which is anchored

at the front of the intermediate boom and the rear of the

outer boom, begins to extend, it forces the intermediate

boom out of the outer boom.

The inner and outer booms are connected by extend and

retract chains. These chains are routed around sheaves

on the intermediate boom. As the intermediate boom is

forced out, the extend chain pulls the inner boom out of

the intermediate boom.

As hydraulic pressure is applied to the retract port on the

extend/retract cylinder, the intermediate boom is pulled

back into the outer boom, and the retract chain pulls the

inner boom back into the intermediate boom.

This mechanical linkage formed by the chains and

supporting hardware, extends and retracts the intermediate

and inner booms at the same rate.

The outer boom does not extend or retract, but lifts and

lowers via action of the lift/lower cylinders.

3.3 BOOM ASSEMBLY MAINTENANCE

The boom assembly consists of the inner, intermediate

and outer booms and supporting hardware.

IMPORTANT: Boom replacement must be completed in

sequence, one boom section at a time, as described in

these instructions. Replacement of two or more boom

sections as a unit requires special considerations that

are not covered in these instructions.

The inner, intermediate and outer boom removal

instructions must be completed in sequence. The inner

boom must be removed before removing the intermediate

boom. The inner boom and intermediate boom must be

removed one at a time before removing the outer boom.

Before beginning, conduct a visual inspection of the

vehicle, work area and task about to be undertaken.

Read, understand and follow these instructions.

After servicing the boom, perform the following:

1. Check wear pads. (Refer to Model 6036 Legacy

Owners/Operators Manual.)

2. Check chain wear and tension adjustment. (Refer to

Section 3.3.7, a. “Boom Chain Inspection” and

Section 3.3.7, c. “Boom Chain Tension Check.”)

3. Apply grease at all lubrication points (grease fittings).

(Refer to Model 6036 Legacy Owners/Operators

Manual.)

4. Check for proper operation by operating all boom

functions through their full range of motion several

times.

3.3.1 Inner Boom Removal

1. Remove any attachment from the quick attach

assembly. (Refer to

Section 3.4.1, “Disconnecting

from an Attachment.”)

WARNING: DO NOT service the vehicle

without following all safety precautions as

outlined in the “Safety Practices” section of this

manual. Failure to follow the safety practices

may result in death or serious injury.

WARNING: Wear protective footwear

with reinforced toe caps and slip-resistant

soles. Failure to comply can result in foot or

other bodily injury from crushing, slipping or

falling.

WARNING: NEVER lift a heavy object

without the help of at least one assistant or a

suitable sling and hoist. Failure to comply can

result in death or serious personal injury.

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