JLG 4017RS Service Manual - Manual (Page 123)

7-9 3614RS, 4017RS
Engine
7.7 ENGINE EXHAUST SYSTEM
Note: Emission Sensitive Exhaust. Assembly must be replaced
exactly as removed. Contact your local JLG dealer before
removing the muffler system.
7.7.1 Exhaust System Removal—ULS
1. Park machine on a firm, level surface, level machine, fully
retract boom, lower boom, place transmission in (N)
NEUTRAL, engage parking brake, and shut engine OFF.
2. Place a Do Not Operate Tag on both ignition key switch
and steering wheel.
3. Open engine cover. Allow system fluids to cool.
4. Properly disconnect battery.
5. Remove belly pan (1).
6. Loosen and remove clamp (2) at exhaust pipe (3).
7. Loosen and remove clamp (4) securing tail pipe (5).
8. Remove tail pipe from exhaust pipe.
9. Loosen and remove exhaust pipe V-band clamps (6) and
exhaust pipes (7).
10. At bottom of muffler, loosen both muffler hangars (8).
11. Carefully remove hangers and lower the muffler from
the machine.
12. Loosen and remove V-band clamp (9) securing exhaust
pipe (3) to muffler.
13. Remove exhaust pipe.
7.7.2 Exhaust System Installation—ULS
Note: Keep all clamps loosened until entire exhaust system is in
place.
1. Install exhaust pipe (3) to muffler.
2. Install muffler and secure with hangars. Do not tighten
hangars.
3. Install the tail pipe (5) to the exhaust pipe (3) and secure
to frame with previously used clamps (2 & 4). Do Not
Tighten.
4. Install exhaust pipe V-band clamps (6) and exhaust
pipes (7). Adjust the muffler, tail and exhaust pipes for
proper clearance then tighten all clamps.
5. Torque clamps (8) to 16–20 Nm (12–15 lb-ft).
6. Torque clamps (2 & 4) to 11–13 Nm (8–9.5 lb-ft).
7. Torque clamps (6) to 9–11 Nm (6.6–8 lb-ft).
8. Properly connect battery.
9. Start engine and check for exhaust leaks at all exhaust
connections. Adjust or repair as needed.
10. Install belly pan.
11. Close and secure engine cover.
12. Remove Do Not Operate Tag from ignition key switch
and steering wheel.
M 7440 Z
1
M 7490 Z
2
5
3
4
M 7500 Z
8
7
6
9
3