JLG G6-42A Service Manual - Manual (Page 107)

6-7 G6-42A, G9-43A, G10-43A
Transmission
6.5 TRANSMISSION COOLER THERMAL
BY-PASS VALVE
6.5.1 Thermal ByPass Valve
Cartridge Removal
1. Park machine on a firm, level surface, level machine,
fully retract boom, lower boom, place transmission
control lever in (N) NEUTRAL position, engage
parking brake, and shut engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and steering wheel.
3. Open engine cover. Allow system fluids to cool.
4. Properly disconnect the battery.
5. Place a suitable receptacle under transmission oil
cooler hose (10). Allow the transmission oil to drain
into receptacle.
6. Transfer used transmission oil into a suitable,
covered container, and label container as “Used Oil.”
Dispose of used oil at an approved recycling facility.
Clean and reinstall the transmission drain plug.
7. Label, disconnect and cap the transmission oil
cooler hoses (10). Cap all fittings and openings to
prevent dirt and debris from entering.
8. Loosen and remove thermal by-pass valve (11). Plug
the opening to prevent dirt and debris from entering
the system.
6.5.2 Thermal By-Pass Valve
Cartridge Installation
1. Remove plug and install new thermal by-pass valve (11).
2. Uncap and connect previously labeled transmission
oil cooler hoses (10).
3. Fill the transmission. Refer to Section 2.5, “Fluids
and Lubricant Capacities,” for proper capacity.
4. Properly connect battery.
Note: Check transmission oil level with engine at idle
and transmission oil at normal operating temperature.
5. Apply park brake, shift transmission control lever to
(N) NEUTRAL position and lower the forks or
attachment to ground.
6. Open engine cover.
7. Remove transmission dipstick (5) and check oil level.
Oil level should be at MAX line. Add oil as required.
8. Replace transmission dipstick.
9. Close and secure engine cover.
10. Recheck all drain plugs, lines, connections, etc., for
leaks, and tighten where necessary.
MAL2180
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11