Lull 944E-42 Service Manual User Manual download pdf (Page 215)

100

101

7.13

Model 644E-42/944E-42 Rev. 6/04

Engine: Cummins 4BT 3.9, B4.5T and QSB 4.5T

6. Flush the radiator with clean water and allow to drain

again. Upon completion, close the petcock (9) and

then remove the hose (8).

7. Transfer the coolant into a properly labeled

container. Dispose of properly.

8. Drain the contents of the overflow reservoir (10) by

removing the overflow tube (11) from the radiator.

The lower portion of the tube is connected to the

overflow reservoir. Use the tube to channel the

coolant into a container. Transfer the coolant into a

properly labeled container. Dispose of properly.

Reconnect the overflow tube to the radiator upon

completion.

9. Fill the radiator completely with a 50/50 mixture of

ethylene glycol and water. Replace the radiator cap.

Add coolant to the overflow bottle until the bottle is

1/2 to 3/4 full. This “overfilling” will compensate for

any air in the cooling system.

10. Clean any dirt or debris from the radiator fins and

core.

11. If the vehicle has dual batteries, connect both

negative battery cables (1 and 2) to both batteries.

Connect the lower negative battery cable (1) to the

negative (-) terminal on the lower battery (3). Swing

the upper battery box (6) in and make sure that the

lip (5) on the upper battery box slides below the

knob (4). Secure in place with the knob (4).

12. Start the engine and run the vehicle to normal

operating temperature, then shut off the engine.

While the engine is cooling, check for leaks.

13. Allow the engine to cool. Check the radiator coolant

level again, and top off with a 50/50 mixture of

ethylene glycol and water. Replace the radiator cap.

14. The overflow bottle should be 1/4 to 1/2 full. If not, fill

to this level with 50/50 mixture of ethylene glycol and

water.

MU1390

MU1380

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Lull 944E-42 Service Manual User Manual Page 215

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