Lull 944E-42 Service Manual - Manual (Page 214)

Engine: Cummins 4BT 3.9, B4.5T and QSB 4.5T
7.12 Model 644E-42/944E-42 Rev. 6/04
9. 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).
10. Run the engine to operating temperature. Visually
check for leaks with the engine running. Check the
coolant level in the overflow bottle and fill, or drain,
as necessary.
7.6.3 Drain and Flush Radiator
1. Park the vehicle on a firm, level surface. Level the
vehicle, ground the attachment, place the travel
select lever in the (N) NEUTRAL DETENT position,
engage the parking brake switch and shut the
engine OFF.
2. Secure accident prevention tags to the steering
wheel and ignition switch. (Refer to Section 1.5,
“Accident Prevention Tag Usage.”)
3. Unlatch and open the engine cover. Allow the engine
to cool before proceeding. Draining the cooling
system while the engine is hot can cause cracks in
the engine block.
4. If the vehicle has dual batteries, disconnect both
negative battery cables (1 and 2) from both
batteries.
To access the lower battery (3), loosen the knob (4)
far enough so that the lip (5) on the upper battery box
clears the knob. Lift up the upper battery box (6) and
swing it out, so that the box clears the hydraulic tank
support bracket, to gain access to the lower negative
battery cable (1). Disconnect the lower negative
battery cable.
5. Slowly turn the radiator cap (7), located near the
upper radiator hose, to the first stop and allow any
pressure to escape. Remove the radiator cap. Place
a hose (8) onto the drip leg of the petcock, located at
the base of the radiator, to channel the drained
coolant into a container. Open the radiator
petcock (9) and allow the coolant to drain.
MU0650
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WARNING:
DO NOT attempt this proce-
dure when the engine is hot. Wait for the
engine, muffler, and tailpipes to cool down
before proceeding. Failure to do so could result
in severe burns.
MU1440
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