JLG 723A Service Manual - Manual (Page 80)

Engine: Deutz TCD 2012
7-8 L2906H, 2906H, 3507H, 619A, 723A, 29.6LP, 29.6, 35.7
7.9 AIR CLEANER ASSEMBLY
Note: Refer to the Operation & Safety Manual
(P/N 31200567) for the correct element change
procedure.
7.9.1 Air Cleaner Assembly Removal
1. Park the machine on a firm, level surface, level the
machine, fully retract the boom, lower the boom,
place the travel select lever in the (N) NEUTRAL
position, engage the parking brake, and shut the
engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and steering wheel, stating that the machine
should not be operated.
3. Open the engine cover. Allow the system fluids to
cool.
4. Properly disconnect the battery.
5. Loosen the clamp (8) securing the air intake tube (9)
to the air cleaner assembly (10). Pull the air intake
elbow off the air cleaner.
6. Remove the hardware (11) securing the air cleaner/
bracket to the air cleaner mounting plate. Remove
the air cleaner assembly (10).
7.9.2 Air Cleaner Assembly Installation
1. Install the air cleaner assembly (10) to the air
cleaner mounting plate with the previously used
hardware (11).
2. Place the loosened clamp (8) over the air intake tube
(9) and install elbow on the air cleaner assembly.
3. Adjust and tighten clamps before starting the
machine.
4. Properly connect the battery.
5. Close and secure the engine cover.
6. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
7.10 ENGINE REPLACEMENT
7.10.1 Engine Removal
Note: If machine is equipped with air conditioning,
DO NOT loosen or disconnect any air conditioning hoses
until the air conditioning system has been properly
drained by the local JLG dealer or certified air
conditioning service center.
1. Park the machine on a firm, level surface, fully
retract the boom, lower the boom, place the
transmission control lever in (N) NEUTRAL, engage
the park brake and shut the engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and the steering wheel, stating that the
machine should not be operated.
3. Open the engine cover. Allow the system fluids to
cool.
4. Thoroughly clean the engine and surrounding area,
including all hoses and fittings before proceeding.
5. Properly disconnect the battery.
6. Remove the engine cover, radiator cover and engine
belly pan.
7. Remove front and rear engine cover supports.
8. Drain hydraulic reservoir. Refer to Section 8.8.2,
“Hydraulic Oil Reservoir Draining.”
9. Drain radiator and overflow bottle. Refer to Section
7.5.2, “Radiator/Oil and Charge Air Cooler
Replacement.”
10. Label, disconnect and cap all hydraulic hoses
attached to engine and radiator, cap all fittings and
plug hoses to keep dirt and debris from entering
hydraulic system.
11. Label, disconnect and cap both air conditioning
hoses.
12. Disconnect the fuel inlet (1) and return lines. Install a
plug in the end of each line.
13. Remove hydraulic and fuel filters, and filter bracket
assembly.
CAUTION
NEVER run the engine with only the inner safety
element installed.
MZ5470
10
8
11
9