Precaution [12/2019 - ]

• Before disassembling the rear differential carrier assembly, thoroughly clean it by removing any sand, mud or foreign matter. This will help prevent contamination during disassembly and reassembly.

• When removing any light alloy parts, do not pry them off with a screwdriver or other tool that may cause damage. Instead, tap the parts with a plastic-faced hammer.

• Always arrange removed parts in the order they were removed and protect them from foreign matter.

• Before installation of each part, thoroughly clean and dry it. Then apply gear oil to it. Do not use alkaline chemicals to clean aluminum parts or rubber parts. Also, do not use non-residue solvent or other cleaning oils to clean O-rings, oil seals or rubber parts.

• Coat sliding surfaces and rotating parts with Toyota genuine differential gear oil LX or equivalent if necessary.

• Do not directly fix a part in a vise. Place aluminum plates between the part and vise.

• Replace any snap rings with new ones.

• Do not allow the case mating surfaces to be scratched. Scratches may lead to oil leakage.

• Do not allow scratches on surfaces which contact oil seals, O-rings or gaskets. Scratches may lead to oil leakage.

• When press-fitting an oil seal, be careful not to damage the lip of the oil seal and its periphery and be sure not to press it in at an angle.

• When replacing a bearing, replace the inner and outer races as a set.

• When replacing a bearing, do not put stress on the roller, ball, retainer or rolling contact surface.

• New bearings are coated with anti-rust oil. If using new bearings, do not clean off this coating.

• Replace bolts if the contact surface or threads are significantly rusty.