Lull 944E-42 Service Manual - Manual (Page 251)

7.49 Model 644E-42/944E-42 Rev. 6/04
Engine: Cummins 4BT 3.9, B4.5T and QSB 4.5T
62. Obtain and connect an appropriate engine analyzer
or tachometer. Check the engine rpm at full throttle.
If the engine rpm is not 2600-2800 rpm, readjust the
throttle limit-stop screw at the throttle pedal within
the cab.
63. Purge the hydraulic system of air by operating all
boom functions through their entire range of motion
several times. Check the hydraulic oil level.
64. Check for proper operation of all components.
65. Turn the engine OFF.
7.11 ENGINE STORAGE
If the engine is properly protected and stored according
to the following recommendations, no corrosion damage
will normally occur. Cummins Engine Company, Inc. and
JLG are not responsible for any damage that occurs in
relation to a service storage period.
Use the following procedures immediately upon removing
engine from service if being stored for an extended period
of time.
1. Clean the outside of the engine.
2. When using a preservative fuel, drain the fuel
system and fill with the preservative fuel. When not
using preservative fuel, keep the fuel system
charged with regular fuel, which, along with the fuel
filter, will have to be drained and discarded at the
end of the storage period.
3. Run the engine to operating temperature. Correct
any fuel, fluid, oil or air leaks. Stop the engine and
drain the oil.
4. Replace the oil filter.
5. Fill the crankcase (sump) to the FULL mark on the
dipstick with new, clean oil or with an approved
preservative fluid. If a preservative fluid is used, it
must be drained and replaced with regular
lubricating oil before the engine is returned to
service.
6. Drain the cooling system. To provide protection
against corrosion, fill the cooling system with a
coolant containing a corrosion inhibitor. If frost
protection is needed, use the appropriate mixture of
anti-freeze and water. If frost protection is not
required, use an appropriate mixture of water with an
approved corrosion mixture.
7. Run the engine for a short period to distribute
lubricating oil and coolant throughout the engine.
8. Clean out the engine breather pipe (where fitted)
and seal the end of the pipe.
9. Remove the fuel injectors and spray clean engine
lubricating oil into cylinder bores, 4 oz. (118,3 ml) of
lubricating oil divided evenly between the four
cylinders.
10. Remove the air filter and any pipe installed between
the air filter and the induction manifold. Seal the
manifold with waterproof tape.
11. Remove the exhaust pipe. Seal the manifold with
waterproof tape.
12. Disconnect the battery and store it safely, in a fully
charged condition. Before the battery is put into
storage, give the battery terminals a protection
against corrosion with a light coating of dielectric
grease or petroleum jelly.
13. Seal the vent pipe of the fuel tank or the fuel filler
cap with waterproof tape.
14. Remove and store the fan drive belt.
Note: Before starting the engine after storage, operate
the starter motor with one of the fuel shut-off solenoid
wires disconnected for 15 seconds or until the dash
panel low oil pressure warning indicator goes out. This
will allow oil to be circulated throughout the engine to
prevent damage to internal components.