Lull 944E-42 Service Manual Bedienungsanleitung PDF herunterladen (Seite 71)

4-11

944E-42

Cab and Covers

13. Remove the four capscrews, washers and sheer

pins (9) that secure the cab mount supports to the

frame.

14. If equipped, remove the skylight glass.

15. Use a suitable overhead lifting device and attach to

the top of the cab.

16. When all wiring, hydraulic hoses and fasteners are

disconnected or removed, carefully and slowly lift the

cab and remove it from the frame. Readjust the

position of the sling as needed to help balance the

cab during removal.

17. When the cab is completely clear of the machine,

carefully lower it to the ground. Block up or support

the cab so that it does not move or fall. Assure that

no personnel enter the cab while it is being removed

from the machine.

18. Inspect the condition of the fittings, clamps, hydraulic

hoses, etc. Replace parts as indicated by their

condition.

19. Inspect and replace other machine parts that are

exposed with the cab removed. Repair or replace as

required.

20. Remove the valve plate assembly from underneath

the cab. Refer to Section 8.7.2, “Main Control Valve.”

21. Remove the four capscrews, rebound washers and

cab isolators (10) that secure the cab to the front and

rear cab mount supports.

22. Transfer all remaining components from the original

cab into the new cab.

23. DO NOT attempt to transfer any decals from the

original cab into the new replacement cab. Always

replace decals with new parts. Refer to the

appropriate Parts Manual to order new decals.

4.6 CAB INSTALLATION

1. Install the cab mount support to the front and rear of

the cab. Use the four capscrews, rebound washers

and cab isolators (10). Torque capscrews to

225 - 350 lb-ft (305 - 474 Nm).

2. Install the valve plate assembly from underneath the

cab. Refer to Section 8.7.2, “Main Control Valve.”

3. Block all four wheels to help prevent the machine

from moving. Assure that there is sufficient overhead

and side clearance for cab installation.

4. Attach a suitable overhead lifting device to the top of

the cab.

5. Carefully begin to lift and align the cab with the

mounting holes in the frame. Stop and check that

wiring, hydraulic hoses, cables, etc., will not be

pinched or damaged as the cab is positioned.

Readjust the position of the sling as needed to help

balance the cab during installation.

6. If equipped, install the skylight glass.

7. Install the four capscrews, washers and sheer pins

(1). Torque capscrews to 1,450 - 1,850 lb-ft

(1,966 - 2,508 Nm).

8. Connect all electrical connections that run from the

cab out to the frame and engine compartment.

9. Install the right side console access panel.

10. Connect the supply and return fuel lines at the fuel

tanks.

11. Connect the electrical connection to the fuel level

sending unit.

12. If equipped, connect heating and air conditioning

hoses and electrical connections. Refer to Section

4.4.8, “Heater/Defroster System.”

13. Uncap and reconnect the hydraulic hoses going from

the hydraulic cylinders, brakes and engine

compartment to the cab. All the hoses may be

accessed either above or below the frame.

14. Remove the blocking from between the frame and lift/

lower cylinder.

15. Properly connect the batteries.

16. Carefully examine all cab components, fasteners,

etc., one last time before engine start-up. Rectify any

faulty conditions.

17. Start the engine and check the operation of all controls.

Check for hydraulic fluid leaks. Check the hydraulic

fluid level in the tank and add fluid as required.

Note: When the engine is initially started, run it briefly at

low idle and check the machine for any visual sign of

fluid leakage. STOP the engine immediately if any

leakage is noted, and make any necessary repairs

before continuing.

18. Wait for the engine to cool and check the coolant

level. Add coolant to the overflow bottle as required

to bring the coolant to the proper level.

MU6780

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Lull 944E-42 Service Manual Bedienungsanleitung Seite 71

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