7F-20 REAR DIFFERENTIAL
UNIT ASSEMBLY
Before installing viscous coupling case (1) to differential carrier
(2), clean mating surfaces of viscous coupling case and differen-
tial carrier, then apply sealant to differential carrier (2) by using a
nozzle as shown in figure by such amount that its section is
1.5mm (0.059 in.) in diameter.
“A” : Sealant 99000-31110
Tightening torque
Coupling case bolts (a) : 25 N·m (2.5 kg-m, 18.0 lb-ft)
TIGHTENING TORQUE SPECIFICATION
Irregular patterns: If the pattern is not oval, it means
that bevel gear is defective. High or low spots on tooth
surfaces or on the seat of bevel gear are the cause of
irregular patterns appearing on some teeth. The rem-
edy is to replace the pinion and-gear set and, if the
seat is defective, so is transfer case. TOOTH CONTACT PATTERN DIAGNOSIS AND REMEDY
Fastening partTightening torque
Nm kg-m lb-ft
Rear differential oil drain plug 55 5.5 40.0
Rear differential oil level/filler plug 50 5.0 36.5
Rear differential companion flange nut 130 13.0 94.0
Rear differential input flange bolts 23 2.3 17.0
Drive bevel gear bolts 80 8.0 58.0
Differential side bearing cap bolts 23 2.3 17.0
Coupling case bolts 25 2.5 18.0
Differential carrier bolts 23 2.3 17.0
Propeller shaft bolts 23 2.3 17.0
