JLG G12-55A AccuPlace Service Manual - Manual (Page 72)

Transmission
6.6 G10-55A & G12-55A AccuPlace
6.5.4 After Transmission Service or
Replacement
Refer to the ZF Transmission Repair Manual
PN- 5872 135 002 (JLG P/N 31200241) which can be
obtained by calling your local JLG distributor.
In general:
1. Check the transmission oil level and add oil as
required.
2. Install a new transmission filter.
3. Check the torque on the drive shaft yoke capscrews.
4. Wear suitable eye protection. When an overhauled
or repaired transmission is installed, thoroughly
clean the oil cooler lines to and from the transmission.
5. Drain and flush the entire system.
6. Disconnect and clean all transmission cooler hoses.
When possible, remove transmission lines from the
machine for cleaning.
7. Thoroughly clean transmission filter screens and
cases, and replace transmission filter elements.
8. Back flush the transmission oil cooler portion of the
radiator or the oil cooler (located behind the radiator)
with oil and compressed air until all foreign material
is removed. Flushing in the direction of normal oil
flow does not adequately clean the cooler. If needed,
remove the radiator or oil cooler from the machine.
Note: DO NOT use flushing compounds for cleaning
purposes.
9. Reassemble all components and fill the transmission
with clean, fresh Mobilfluid 424 ® (ISO Grade 46)
through the oil fill tube opening (4). Check the level
by taking intermittent dipstick readings as outlined in
the appropriate Operation & Safety Manual. DO NOT
overfill. Reinstall the oil fill tube plug and dipstick
when finished.
10. Run the engine for two minutes at idle to help prime the
torque converter and the transmission oil lines.
11. Recheck the level of the fluid in the transmission with
the engine running at idle.
12. Add Mobilfluid 424 ® (ISO Grade 46) 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).
13. Recheck all drain plugs, lines, connections, etc., for
leaks, and tighten where necessary.
CAUTION
DO NOT exceed 165 psi (11,4 bar) when back flushing
the oil cooler. Applying too much pressure may
damage the oil cooler/radiator.
MAP0690
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