1995 ACURA TL Service Repair Manual

Differential
Troubleshootin g
NOTE: Mos t problem s i n th e uni t ar e t o b e diagnose d b y identifyin g noise s fro m th e gear s o r bearings .
Car e shoul d b e take n durin g diagnosi s no t t o confus e differentia l noise s wit h thos e fro m othe r drivetrai n components .
[Nois e symptom s wil l b e mos t prominent ]
Symptom
Consisten t nois e durin g
cruisin g
Gear noise s whil e
acceleratin g
Gear noise s whil e
coastin g o r acceleratin g
Bearin g noise s whil e
acceleratin g o r
coasting/deceleratio n
Abnorma l noise s whe n
roundin g a curv e
Abnorma l noise s durin g
acceleratio n o r whe n firs t
drivin g awa y fro m a sto p
Oil lea k
Overheatin g Probabl
e Caus e
• Lac k o f oi l
• Foreig n matte r stuc k i n gears , etc .
• Imprope r toot h contac t betwee n rin g gea r an d
driv e pinio n
• Wor n o r damage d sid e bearin g
• Deforme d rin g gea r o r differentia l carrie r
• Lac k o f oi l
• Foreig n matte r stuc k i n gears , etc .
• Imprope r driv e pinio n preloa d
• Chippe d o r damage d gear s
• Imprope r driv e pinio n preloa d
• Damage d o r chippe d gear s
Cracke d o r damage d driv e pinio n bearin g o r sid e
bearin g
• Wor n (excessiv e play ) o r damage d sid e bearin g
• Damage d sid e gear , pinion , o r pinio n shaf t
• Excessiv e backlas h betwee n rin g gea r an d
driv e pinio n
• Imprope r rin g gea r o r driv e pinio n preloa d
• Excessiv e pinio n backlas h
• Wor n differentia l spline s
• Loos e companio n flang e nut s an d othe r
fastener s
• Oi l leve l to o hig h
• Clogge d breathe r hol e
• Loos e cas e cove r o r inadequat e sealin g
• Wor n o r damage d oi l sea l
• Lac k o f oi l
• Insufficien t rin g gear-to-pinio n backlas h
• Excessiv e rin g gea r o r driv e pinio n preloa d Remed
y
• Replenis h oi l
• Clea n an d inspec t
• Adjus t o r replac e
• Replac e an y damage d o r
fault y part s
• Replenis h oi l
• Clea n an d inspec t
• Adjus t
• Replac e
Adjust o r replac e
Replac e
Replac e
• Adjus t
• Adjus t o r replac e
• Rechec k torqu e o r replac e
• Lowe r t o prope r leve l
• Clea n o r replac e
• Rechec k torqu e o r appl y sealan t
• Replac e
• Replenis h
• Adjus t
• Adjus t o r replac e
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Maintenance
Differential Oi l
NOTE : Chec k th e differentia l oi l wit h engin e OFF , an d
th e vehicl e o n leve l ground .
1 . Remov e th e oi l fille r plug , the n chec k th e leve l an d
conditio n o f th e oil .
WASHERReplace .Proper Leve r
OI L FILLE R PLU G
4 4 N- m (4. 5 kgf-m , 3 3 Ibf-ft )
WASHE R Replace .
2. Th e oi l leve l mus t b e u p t o th e fil l hole . I f i t i s belo w
th e hole , ad d oi l unti l i t run s out , the n reinstal l th e
oil fille r plu g wit h a ne w washer .
3. I f th e differentia l oi l i s dirty , remov e th e drai n plug ,
an d drai n th e oil .
DRAI N PLU G
3 9 N- m (4. 0 kgf-m , 2 9 Ibf-ft )
WASHE R Replace .
OI L FILLE R PLU G
4 4 N- m (4. 5 kgf-m , 3 3 Ibf-ft )
4. Reinstal l th e drai n plu g wit h a ne w washer , an d refil l
th e differentia l oi l t o th e prope r level .
NOTE :
• Th e drai n plu g washe r shoul d b e replace d a t ever y
oi l change .
• Clea n th e drai n plu g befor e reinstalling . 5
. Reinstal l th e oi l fille r plu g wit h a ne w washer .
Oi l Capacit y
1.0 5 (1.1 1 U S qt , 0.9 2 Im p qt ) a t oi l chang e
1.10 (1.1 6 U S qt , 0.9 7 Im p qt ) a t overhau l
Recommende d oil :
Hypoi d gea r oi l
AP I Classificatio n GL 4 o r GL 5
viscosity :
SAE 9 0 abov e 0° F (-18°C )
SA E 8 0 W - 9 0 belo w 0° F (-18°C )
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Differential Assembl y
Removal
• Mak e sur e jack s an d safet y stand s ar e place d properly ,
an d hois t bracket s ar e attache d to correc t position s o n
th e engine .
• Appl y parkin g brak e an d bloc k rea r wheel s s o th e
vehicl e wil l no t rol l of f stand s an d fal l o n yo u whil e
workin g unde r it .
CAUTION : Us e fende r cover s t o avoi d damagin g painte d
surfaces .
1. Remov e th e drai n plug , an d drai n th e differentia l oi l
(se e pag e 15-4 ).
2 . Remov e th e driveshaft s an d intermediat e shaf t (se e
sectio n 16 ).
3 . Remov e th e 3 6 m m sealin g bolt , the n disconnec t
th e extensio n shaf t fro m th e differentia l usin g th e
specia l tool .
NOTE : Shif t th e transmissio n int o th e positio n t o
loc k th e secondar y gear .
36 m m SEALIN G
BOL T SE
T RIN GReplace .
EXTENSIO N SHAF T PULLE R
07LA C-PW5010 0 o r
07LAC-PW5010 1
EXTENSION SHAF T
4. Remov e th e splas h shield .
SPLAS H
SHIEL D
5. Remov e th e lowe r plate , the n reinstal l th e steerin g
gearbo x mountin g bolts .
STEERIN G GEARBO XMOUNTING BOLT S59 N- m (6. 0 kgf-m ,
4. 3 Ibf-ft ) LOWE
R PLAT E
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Differential Assembl y
Removal (cont'd )
6. Remov e th e righ t fron t bea m bridge .
RIGHT FRON T BEA M BRIDG E
7. Disconnec t th e vehicl e spee d senso r (VSS ) con -
necter , the n remov e th e VSS/powe r steerin g spee d
sensor .
NOTE: D o rio t disconnec t th e hoses .
VSS CONNECTE R
VSS/POWE R STEERIN G
SPEE D SENSO R
8. Remov e th e mountin g bolt s an d 2 6 m m shim , the n
remov e th e differentia l assembly .
O-RINGReplace .
DIFFERENTIA LASSEMBLY
26 m m SHI M
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Illustrated Inde x
43 m m THRUS T SHI MSelection , pag e 15-2 4
OIL GUID E PIP E
DIFFERENTIA L
CASE
DOWE LPINS
THRUS TWASHE R
OIL SEA L
Replace .
THRUS T
WASHE RDRIVE PINIO N
TAPERE D ROLLE R BEARIN G
THRUS T WASHE R
PINION SPACE R Replace .
THRUST
WASHER S
LOCKNU T
Replace . TAPERE
D ROLLE R BEARIN G
PINION HU B
SCRE W Replace .12 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft )
BREATHE R PLAT E RIN
G GEA R 79.
5 m m THRUS T SHI M (S ) ( 1 o r 2 shims )
Selection , pag e 15-2 3
TAPERE D ROLLE R BEARIN G
11 x 1. 0 m m118 N- m (1 2 kgf-m ,
8 7 Ibf-ft )
TAPERE D ROLLE R
BEARIN G
BREATHE RTUBE
BEARIN G OUTE R RAC E DIFFERENTIA
L
CARRIER
10 x 1.2 5 mm44 N- m (4. 5 kgf-m , 3 3 Ibf-ft )
WASHE RReplace .
79.5 m m THRUS T SHIM(S )(1 o r 2 shims )
Selection , pag e 15-2 3
DIFFERENTIA L
CAS E COVE R OI
L FILLE R PLU G
4 4 N- m (4. 5 kgf-m , 3 3 Ibf-ft )
WASHE RReplace. OI
L SEA L
Replace .
DRAI N PLU G
3 9 N- m (4. 0 kgf-m ; 2 9 Ibf-ft )
6 x 1. 0 m m12 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft )
THRUS T
WASHE R
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Differential Assembl y
Inspection
To establis h a startin g poin t befor e disassembly , inspec t
the following :
• Rin g gea r backlas h
• Tota l bearin g preloa d
• Gea r toot h contac t
NOTE:
• B e sur e th e differentia l i s a t roo m temperatur e befor e
inspecting .
• Recor d th e result s o f th e preliminar y inspections .
This informatio n wil l b e helpfu l during reassembly .
Ring gea r backlas h
1 . Remov e th e oi l fille r plu g an d th e oi l seal .
OIL SEA L
Replace . OI
L FILLE R PLU G
4 4 N- m (4. 5 kgf-m , 3 3 Ibf-ft )
WASHE R
Replace .
BENCHVISE LOCKNU
T SOCKET ,
36 x 4 1 m m07HAA-SF1010 0
3. Alig n th e differentia l gea r inspectio n hol e wit h th e
oil fille r plu g hole .
4. Measur e th e backlas h o f th e rin g gea r o n th e differ -
entia l carrie r usin g th e specia l tool s a s shown . Afte r
measuring , remov e th e dia l gaug e an d tur n th e dif -
ferentia l carrie r on e ful l turn , the n remeasur e th e
backlash .
Standard : 0.0 6 - 0.1 4 m m (0.00 2 - 0.00 6 in )
Th e differenc e betwee n th e tw o measurement s take n
mus t no t excee d 0.0 6 m m (0.00 2 in) .
LOCKNU T SOCKET ,36 x 4 1 m m07HAA-SF1010 0
Total bearin g preloa d
5 . Remov e th e differentia l cas e cove r an d th e differen -
tial carrier .
NOTE: Loose n th e bolt s i n a crisscros s pattern , i n
severa l steps .
10 x 1.2 5 mm44 N- m (4. 5 kgf-m , 3 3 Ibf-ft )
DIFFERENTIA L
CAS E COVE R
DIFFERENTIA L
CARRIER
SOFT JAW S
INSPECTIO NHOLE
2. Secur e th e differentia l assembl y i n a vis e wit h sof t
jaws .
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6. Us e a dial-typ e torqu e wrenc h o n th e driv e pinio n t o
measur e th e driv e pinio n bearin g preloa d (Tp) .
Standard : 1.4 2 - 1.9 1 N- m
(14. 5 - 19. 5 kgf-cm , 12. 6 - 16. 9 Ibf-in )
7. Reinstal l th e differentia l carrie r an d th e differentia l
cas e cover , the n measur e th e tota l bearin g preload .
Th e tota l bearin g preloa d shoul d excee d th e driv e
pinio n bearin g preloa d (Tp ) by :
Standard :
0.94 - 1.0 7 N- m (9. 6 - 10. 9 kgf-cm , 8.3 3 - 9.4 6 Ibf-in )
Example :
Total bearin g preloa d (fro m ste p 7 )
- T p (fro m ste p 6 )
= 0.9 4 - 1.0 7 N- m (9. 6 - 10. 9 kgf-cm , 8.3 3 - 9.4 6 Ibf-m )
Gear toot h contac t
8 . Remov e th e differentia l cas e cove r an d differentia l
carrier . Clea n an d pain t th e rin g gea r teet h lightl y an d
evenl y wit h Prussia n Blu e (o n bot h side s o f eac h
tooth) .
9 . Reinstal l th e differentia l carrie r an d th e differentia l
cas e cover , the n torqu e th e bolt s in a crisscros s pat -
ter n in severa l steps .
10 . Instal l th e specia l too l a s shown , the n rotat e th e
driv e pinio n i n bot h direction s s o tha t th e rin g gea r
rotat e on e ful l tur n i n bot h directions . Durin g thi s
operatio n resistanc e shoul d b e applie d t o th e rin g
gear .
LOCKNU T SOCKET ,36 x 41 m m07HAA-SF1010 0
DRIVEPINIO N
11. Remov e th e differentia l cas e cove r an d th e differen -
tia l carrier , the n chec k th e toot h contac t pattern .
CORREC T TOOT H CONTAC T
TOE CONTACT HEEL CONTAC T
FLANK CONTAC T FACE CONTAC T
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Differential Assembly

Disassembly

1. Remove the bolts in a crisscross pattern, in several

steps, then remove the differential case cover.

DIFFERENTIAL

CASE COVER

DIFFERENTIAL CASE

2. Remove the oil seal from the differential case cover.

OIL SEAL

Replace.

DIFFERENTIAL

CASE COVER
3. Remove the bearing outer race and the 79.5 mm

thrust shim(s) from the differential case cover by heat-

ing the differential case cover to about 212°F (100°C).

NOTE:

• Do not heat the differential case cover in excess

of 212°F (100°C).

• If the bearing outer race was removed by heat-

ing, allow the differential case cover to cool to

room temperature.

• Replace the tapered roller bearing with a new

one whenever the bearing outer race is replaced.

BEARING OUTER

RACE

79.5
mm

THRUST SHIM

(1 or 2 shims)

DIFFERENTIAL CASE COVER

4. Remove the breather plate.

SCREW

Replace.

BREATHER PLATEProCarManuals.com