JLG G12-55A Service Manual - Manual (Page 111)

7-13 G10-55A, G12-55A
Engine
7.7.2 Exhaust System Installation
Note: Keep all clamps loosened until entire exhaust
system is in place.
1. Install the exhaust pipe/flex pipe (8) with a new seal
(9) to the turbo charger.
2. Install the exhaust pipe/flex pipe clamp (5) at the
bottom rear corner of the engine pod.
3. Install the exhaust pipe (6) to the exhaust/flex pipe
(8).
4. Install the muffler (4) to the exhaust pipe (6).
5. Install the tail pipe (10) to the muffler (4).
6. Install the clamps (3) securing the tail pipe/muffler/
exhaust pipe to the frame mounted brackets.
7. Adjust the muffler, exhaust and tail pipes for proper
clearance then tighten all clamps.
8. Install the exhaust heat shield (2).
9. Install the muffler heat shield (1).
10. Properly connect the battery.
11. Start engine and check for exhaust leaks at all
exhaust connections. Adjust as needed.
12. Close and secure the engine cover.
13. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
7.8 AIR CLEANER ASSEMBLY
Note: Refer to the appropriate Operation & Safety
Manual for your machine for the correct element change
procedure.
7.8.1 Air Cleaner Assembly Removal
(John Deere & Perkins)
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. Remove the clamp (11) securing the air intake elbow
(12) to the air cleaner assembly (13). Pull the air
intake elbow off the air cleaner.
6. Remove the capscrews and nuts securing the air
cleaner mounting bracket (14) to the air cleaner
mounting plate. Remove the air cleaner assembly.
7.8.2 Air Cleaner Assembly Installation
(John Deere & Perkins)
Note: Apply Loctite
®
242 to the capscrew threads
before installation.
1. Install the air cleaner assembly (13) to the cab
mounting plate with the previously removed
hardware (14).
2. Place the loosened clamp (11) over the air outlet
elbow (12) and install elbow on the air cleaner
assembly.
3. Adjust and tighten the clamp.
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.
7.8.3 Air Cleaner Assembly Removal
(Cummins)
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.
WARNING
NEVER run the engine with only the inner safety
element installed.
MY4250
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