JLG G12-55A AccuPlace Service Manual - Manual (Page 86)

Engine
7.8 G10-55A & G12-55A AccuPlace
6. Fill the fuel tank according to specifications. Refer to
Section 2.4, “Fluid and Lubricant Capacities.”
7. Check fuel tank for leaks.
8. Connect the battery negative (-) cable to the battery
negative (-) terminal.
9. Close and secure the engine cover.
7.4.3 After Fuel System Service
1. Drain and flush the fuel tank if it was contaminated.
2. Vent air from the fuel system in accordance with the
instructions found in the appropriate Operation &
Safety Manual.
3. Fill the fuel tank with fresh, clean diesel fuel as required.
7.5 ENGINE EXHAUST SYSTEM
7.5.1 Exhaust System 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. Remove the battery negative (-) cable from the
battery negative (-) terminal.
5. Remove the heat shield attached to the engine.
6. Loosen and remove the clamp from the exhaust pipe
at the exhaust manifold.
7. Disconnect and remove the clamp attaching the
exhaust pipe to the frame.
8. Disconnect and remove the clamp connecting the
muffler and the exhaust pipe.
9. Disconnect and remove the clamp connecting the
tail pipe to the muffler and remove the tail pipe.
10. Loosen and remove the bolts at the front and rear of
the muffler, remove the muffler.
7.5.2 Exhaust System Installation
Note: Keep all clamps loosened until entire exhaust
system is in place.
1. Install the exhaust pipe with a new seal to the
exhaust manifold.
Note: Replace the nuts and the exhaust manifold studs
if damaged.
2. Install the exhaust pipe clamp.
3. Install the muffler to the exhaust pipe and bolt the
muffler to the frame.
4. Install the clamp securing the muffler to the exhaust
pipe.
5. Install the clamp securing the muffler to the tail pipe.
6. Adjust the muffler, exhaust and tail pipes for proper
clearance then tighten all clamps.
7. Install the heat shield attached to the engine.
8. Connect the battery negative (-) cable to the battery
negative (-) terminal.
9. Start engine and check for exhaust leaks at all
exhaust connections. Adjust or repair as needed.
10. Close and secure the engine cover.
MAP0190