JLG 723A Service Manual - Manual (Page 70)

Transmission
6-4 L2906H, 2906H, 3507H, 619A, 723A, 29.6LP, 29.6, 35.7
12. Carefully remove the transmission from the
machine. Avoid causing damage to the transmission
or surrounding parts.
13. 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
14. overed in the Transmission Disassembly &
Assembly Manual (P/N 31200456).
6.5.2 Transmission Installation
1. Use a lifting strap or chain attached to a hoist or
overhead crane to position the transmission within
the chassis.
2. Insert the two Allen head bolts that attach the
transmission to the engine. Torque to 210 Nm
(154 lb-ft).
3. Remove the hoist or overhead crane and sling.
4. Uncap and reconnect the previously labeled hoses
and electrical connections to their appropriate
locations.
5. Fill hydraulic reservoir and bleed the system.
6. Reinstall the hood support.
7. Reinstall the air cleaner assembly.
8. Properly connect the battery.
9. Close and secure the engine cover.
10. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
6.5.3 After Transmission Replacement
1. Install new hydraulic filters.
2. Check the hydraulic oil level and add oil as required.
3. Reassemble all components and fill the hydraulic
reservoir with clean, fresh oil. DO NOT overfill.
4. Run the engine for two minutes at idle to help bleed
any air from the hydraulic system.
5. Operate all boom functions to ensure any air is
removed from the hydraulic system.
6. Retract and level the boom, recheck the level of the
fluid in the reservoir.
7. Add oil as necessary to bring the fluid level up until it
reaches the FULL mark on the reservoir. Recheck
the oil level when it reaches operating temperature
(83-94° C or 180-200° F).
8. Recheck all drain plugs, lines, connections, etc., for
leaks, and tighten where necessary.
WARNING
NEVER lift a transmission alone; enlist the help of at
least one assistant or use a suitable hoist or overhead
crane and sling.
NOTICE
DO NOT use flushing compounds for cleaning
purposes.