Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: Precaution

PRECAUTION

  • Before disassembly, clean the outside of the differential assembly and remove any sand or mud to prevent it from entering the inside of the assembly during disassembly and installation.
  • When removing an installed part made of light alloy such as the differential side bearing retainer, tap it off with a brass bar and a hammer. Do not attempt to pry it off with a screwdriver.
  • Always arrange disassembled parts in order and protect them from dust.
  • Before installation, thoroughly clean and dry each part and then apply Toyota Genuine Differential gear oil LT SAE 75W-85 GL-5 or equivalent to them. Do not use alkaline cleaner for aluminum or rubber parts and rear differential case bolts. Also, do not clean rubber parts such as oil seals with non-residue solvent.
  • Coat sliding surfaces and rotating parts with Toyota Genuine Differential gear oil LT SAE 75W-85 GL-5 or equivalent.
  • When holding a part in a vise, be sure to place aluminum plates between the part and vise. Do not put it directly in the vise.
  • Always replace non-reusable parts with new ones.
  • Do not damage the sealing surfaces of the case. Such damage may cause oil leakage.
  • Before applying seal packing, completely remove any old seal packing remaining on the components using a non-residue solvent.
  • Do not add oil within 1 hour or allow rapid acceleration or deceleration within 12 hours of installing sealed parts.
  • Damage to surfaces in contact with an oil seal or gasket may cause oil leakage.
  • When press-fitting an oil seal, do not damage the oil seal lip or outside periphery.
  • When replacing a bearing, replace the inner and outer races as a set.
  • When replacing a bearing, do not apply force to the roller or retainer.
  • When replacing a hypoid gear, replace the ring gear and drive pinion as a set.
  • New bearings are coated with anti-rust oil. If using new bearings, do not wash it off.
  • If the threads or contact surface of a bolt is excessively rusty, replace the bolt.
    Differential System
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