JLG 4017PS Service Manual - Manual (Page 114)

Transmission
6-4 3706PS, 3707PS, 4014PS, 4017PS, 33.7, 37.6, 37.7
12. Remove the access cover (3) from the engine bell
housing. This will allow access to remove the eight
torque convertor flex plate bolts and washers from
the engine flywheel.
13. Turn the engine over slowly by hand and align each
of the torque convertor flex plate bolts to be
accessed. Remove them one at a time.
14. Remove the ten bolts and washers (4) holding the
transmission to the engine.
15. Remove the air cleaner mounting bracket (5).
16. Use a suitable hoist or overhead crane, secure the
transmission with a lifting strap or chain to the
transmission lifting bracket (6).
Note: The lifting bracket (6) is NOT included with the
transmission.
17. Carefully remove the transmission from the
machine. Avoid causing damage to the transmission
or surrounding parts.
18. Lift the transmission clear of the machine, and lower
it onto suitable supports or secure it to a stand built
especially for transmission or engine service. Secure
the transmission so that it will not move or fall.
19. Remove any external transmission components as
required. Cover all transmission openings.
6.4.2 Transmission Installation
Note: Apply Loctite ® 243 TM to all transmission bolts
before installation.
1. Use a suitable hoist or overhead crane, secure the
transmission with a lifting strap or chain to the
transmission lifting bracket (6).
2. Install the air cleaner mounting bracket (5) with the
previously removed hardware.
3. Install the transmission to the engine and secure
with the ten bolts and washers (4) previously
removed. Torque to 55 Nm (41 lb-ft).
4. Remove the hoist or overhead crane and sling.
5. Turn the engine over slowly by hand and align and
install each of the torque convertor flex plate bolts
and washers to the engine flywheel through the
access opening on the engine bell housing. Install
them one at a time. DO NOT fully tighten until all of
the bolts are in place.
6. Torque each flex plate bolt to 55 Nm (41 lb-ft).
7. Install the hydraulic pump. Refer to Section 8.8.1,
“Pump Replacement.”
8. Refer to Section 7.9.4, “Engine/Transmission
Installation,”for detailed engine/transmission
installation instructions.
MZ6380
2
3
MZ6391
4
5
6
WARNING
NEVER lift a transmission alone; enlist the help of at
least one assistant or use a suitable hoist or overhead
crane and sling.