The splines on the gearbox o/p shaft and transfer case i/p shaft rely on the original assembly grease so I have just had the splines on my MY12 L322 (same TC as the D4) re-greased at 150K (TC R&R'd). Whilst adequate but rather dry grease remained and with no signs of spline wear, it was suggested that the grease wouldn't have lasted another 150K therefore would probably require new shafts on both boxes at around 300K. Worn splines will strip without warning immobilising the vehicle. If the TC has been removed for any reason then hopefully the special grease was renewed at the time. IMO 150K is about half way to requiring new TC o/p shaft seals so a good time to undertake this preventative maintenance.
MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
VK2HFG and APRS W1 digi, RTK base station using LoRa
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