JLG 723A Service Manual - Manual (Page 79)

7-7 L2906H, 2906H, 3507H, 619A, 723A, 29.6LP, 29.6, 35.7
Engine: Deutz TCD 2012
7.8 ENGINE EXHAUST SYSTEM
7.8.1 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. Properly disconnect the battery.
5. Loosen and remove the clamp (1)(hidden)
connecting the muffler and tail pipe from the bracket
on the side of the frame.
6. Loosen and remove the clamp (2) attaching the rear
exhaust pipe section to the muffler.
7. Remove the muffler and tail pipe (3).
8. Loosen and remove the clamp (4) attaching the rear
exhaust pipe section to the frame.
9. Remove the rear exhaust pipe section (5) from the
front exhaust pipe section (6).
10. Loosen and remove the exhaust pipe flange nuts (7)
at the turbocharger.
11. Remove the front exhaust pipe section (6) from the
engine.
7.8.2 Exhaust System Installation
Note: Keep all clamps loosened until entire exhaust
system is in place.
Note: Replace the nuts and the exhaust studs on the
turbocharger if damaged.
1. Install the front exhaust pipe section (6) in place at
the turbocharger with the previously used hardware.
Torque the flange nuts (7) on the turbo charger to
30 ±7 Nm (22 ±5 lb-ft).
2. Install the rear exhaust pipe section (5) to the front
exhaust pipe section (6) with the previously used
clamp.
3. Install the muffler and tailpipe (3) to the exhaust pipe
with the previously used hardware.
4. Install the muffler (3) to the frame brackets with the
previously used hardware.
5. Adjust the muffler, exhaust and tail pipes for proper
clearance then tighten all clamps.
6. Properly connect the battery.
7. Start engine and check for exhaust leaks at all
exhaust connections. Adjust or repair 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.
MZ5450
2
4
1
5
3
MZ5460
7 6