JLG G6-42A Service Manual - Manual (Page 111)

6-9 G6-42A, G9-43A, G10-43A
Transmission
6.6.2 Thermal Bypass Valve Installation
1. Place the new thermal bypass valve (5) in the
engine compartment and secure using the
previously used bolts (6).
2. Uncap and connect the previously labeled hydraulic
oil cooler hoses (4) to the thermal bypass valve.
3. Uncap and connect the previously labeled
transmission oil cooler hoses to the transmission oil
cooler.
4. Clean the transmission oil filter mounting surface.
5. Apply a thin film of clean hydraulic oil to the new
transmission filter gasket. Install the new filter and
torque to 20-25 lb-ft (27-34 Nm).
6. Transmission oil may be added through the dipstick
tube. Remove the dipstick and add transmission oil.
Check the oil level by taking intermittent dipstick
readings as outlined in the appropriate Operation &
Maintenance Manual. DO NOT overfill. Reinstall the
dipstick when finished.
7. Remove drop box fill/level plug and fill with
transmission fluid. Reinstall plug.
8. Install and properly connect the battery.
9. Run the engine for two minutes at idle.
10. Recheck the level of the fluid in the transmission
with the engine running at idle.
11. Add transmission oil as necessary to bring the fluid
level up until it reaches the FULL mark on the
dipstick. Recheck the oil level when it reaches
operating temperature 180-200° F (83-94° C).
12. Recheck all drain plugs, lines, connections, etc., for
leaks and tighten where necessary.
13. Close and secure the engine cover.
14. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.