Lull 1044C-54 Series II Service Manual - Manual (Page 329)

Transmission
31200079 8-5
• At ten hour intervals, check the transmission oil level. Refer to the appro-
priate operators & safety manual.
• When the vehicle completes its first 50 hours of use, change the transmis-
sion filter. Change the filter only; DO NOT change the transmission oil at
the first 50 hour maintenance level. Refer to the appropriate operators &
safety manual.
• At 1,000 hour intervals, change the transmission oil and filter. Refer to the
appropriate operators & safety manual.
Periodically, depending on operating conditions and other factors, back flush the
transmission oil cooler (2), which is located in or behind the radiator. ALWAYS
back flush the transmission oil cooler after removing the transmission for repair or
replacement.
The transmission oil cooler outlet hose (3), routed to the lower oil cooler fitting, is
located on the top of the transmission. The transmission oil cooler inlet hose (4),
routed to the upper oil cooler fitting, is located on the top of the transmission.
CAUTION: DO NOT exceed 165 psi (39.6 bar) when back flushing the oil
cooler. Applying too much pressure may damage the oil
cooler/radiator.
Disconnect and back flush the 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. If necessary, remove the radiator or oil cooler from the vehicle, and clean
the oil cooler circuit using oil, compressed air and steam.
IMPORTANT: DO NOT use flushing compounds for cleaning purposes
Fig. 8-4: Transmission Oil Cooler Hose Connections
Transmission Replacement
Note: Contact the JLG Service Department at 1-877-554-5438 or
1-717-485-6657, if internal transmission repair is required during the warranty
period.
MV0230
2
4
3