JLG G12-55A Service Manual - Manual (Page 114)

Engine
7-10 G10-55A, G12-55A
7.5 ENGINE EXHAUST SYSTEM
7.5.1 Exhaust System Removal—ULS
1. Park machine on a firm, level surface, level machine,
fully retract boom, lower boom, place transmission
control lever in (N) NEUTRAL position, engage
parking brake, and shut engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and steering wheel.
3. Open engine cover. Allow system fluids and exhaust
system to cool.
4. Properly disconnect the batteries.
5. Loosen and remove the clamp (7) securing exhaust
tail pipe (8) to frame at bottom rear corner of the
engine pod.
6. Loosen and remove clamps (9) securing exhaust tail
pipe (8). Remove exhaust tail pipe
7. Loosen and remove clamp (10) securing engine pod
exhaust pipe (11) to muffler (12). Remove engine
pod exhaust pipe.
8. Loosen and remove clamps (13) securing exhaust
flex pipe (14) to muffler and turbo charger (15).
Remove exhaust flex pipe.
9. Loosen and open clamp strap(16) securing muffler
to bottom of engine pod. Remove the muffler.
7.5.2 Exhaust System Installation—ULS
Note: Keep all clamps loosened until entire exhaust
system is in place.
1. Install the flex pipe (14) to the turbo charger (15).
2. Install clamps (13) securing flex pipe.
3. Install the engine pod exhaust pipe (11) and secure
with clamp (10).
4. Install exhaust tail pipe (8) with clamps (9) and
clamp (7) to engine pod.
5. Adjust the muffler, exhaust and tail pipes for proper
clearance then tighten all clamps.
6. Properly connect the batteries.
7. Start engine and check for exhaust leaks at all
exhaust connections. Adjust as needed.
8. Close and secure the engine cover.
9. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
10.
MY7020
7
9
12
11 8
10
13
14
13
15
16