groupmodel
Engine
See Below
NUMBER
DATE
050
August 2009
Horizontal Kia Motors Logo 4/C - Large
Tagline @ 70% Black
Technical Service Bulletin
SUBJECT:
Torque Specifications on "Torque to Yield"
Engine Component Bolts
This bulletin provides information on torque specifications for cylinder head, crankshaft
main & rod bearing cap bolts by means of torque-angle method, using a torque wrench and
torque angle gauge. Information is provided for the following models:
Engine
1.6L
Alpha
Gamma
1.6L
Beta
Theta
Mu
Delta
Lambda
Tau
2.0L
2.0L
2.4L
2.7L
2.7L
3.3L
3.8L
4.6L
Affected Models
Rio (JB)
Soul (AM)
Spectra (LD), Soul (AM),
Sportage (KM)
Forte (TD), Optima (MG),
Rondo (UN)
Optima (MG), Rondo (UN)
Sportage(KM)
Sorento (BL)
Amanti (GH), Sorento (BL),
Sedona (VQ), Borrego (HM)
Borrego (HM)
CAUTION
Unless torque specifications are followed, further engine damage may occur,
resulting in possible warranty charge back.
File Under: Engine
Circulate To:
X General Manager
X Service Advisor(s)X Technician(s)
X Service Manager
X Parts Manager
X Body Shop Manager X Fleet Repair
Page 2 of 3
subject:
Torque Specifications on "Torque to Yield"
Engine Component Bolts
Cylinder Head Bolts
Engine
Alpha
1.6L
Gamma 1.6L
Beta
2.0L
2.0L
2.4L
Mu
2.7L
Delta
2.7L
3.3L
Lambda
3.8L
Theta
Tau
4.6L
Tightening Torque
(21.7ft.lb) or (3.0kgf.m) + 90˚→ Loosen →
(21.7ft.lb) or (3.0kgf.m) + 90˚
(14.5ft.lb) or (2.0kgf.m) + 90± 5˚+ 100± 5˚
M10 bolt: (18.1ft.lb) or (2.5kgf.m) + 60~65˚+ 60~65˚
M12 bolt: (21.7ft.lb) or (3.0kgf.m) + 60~65˚+ 60~65˚
(25.3ft.lb) or (3.5kgf.m) + 90˚~95˚ + 90˚~95˚
Remarks
Under no circumstances
should previously used
cylinder head bolts be
used again. Always
install new.
(18.1ft.lb) or (2.5kgf.m) + 60˚±2˚+ 45˚±2˚
(18.1ft.lb) or (2.5kgf.m) +60˚±2˚ + 45˚±2˚
(28.9ft.lb) or (4.0kgf.m) + 120˚±2˚+ 90˚±2˚
No.1~10 bolt: (25.3ft.lb) or (3.5kgf.m) + 90˚±2˚+ 120˚±2˚
No.11~12 bolt: (24.6~26.8ft.lb) or (3.4~3.7kgf.m)
Please note: There is no
need to additionally tighten
the bolt numbers 11 and
12 by torque angle. These
are not torque to yield
bolts. Refer to next page
for bolts location and their
sequence illustration.
Main Bearing Cap Bolt
Engine
Alpha
1.6L
Gamma 1.6L
Beta
2.0L
2.0L
Theta
2.4L
Mu
2.7L
Delta
2.7L
3.3L
Lambda
Tau
3.8L
4.6L
TSB: ENG 050 Tightening Torque
Remarks
(39.8~43.4ft.lb) or (5.5~6.0kgf.m)
Ok to re-use old bolt
(This is not a torque to
yield bolt).
(14.5±1.45ft.lb) or (2.0±0.2kgf.m) + 90˚±2˚
(21.7±1.45ft.lb) or (3.0±0.2kgf.m) + 60~64˚
(21.7±1.45ft.lb) or (3.0±0.2kgf.m) + 120~125˚
M8 bolt: (11.6±2.17ft.lb) or (1.6±0.3kgf.m) + 90~95˚
M10 bolt: (21.7±2.17ft.lb) or (3.0±0.3kgf.m) + 90~95˚
M8 bolt: (11.6±2.17ft.lb) or (1.6±0.3kgf.m) + 90~95˚
M10 bolt: (21.7±2.17ft.lb) or (3.0±0.3kgf.m) + 90~95˚
No.1~8 bolt: (36.2ft.lb) or (5.0kgf.m)+ 90˚,
No.9~16 bolt: (14.5ft.lb) or (2.0kgf.m) + 120˚,
No.17~22 bolt: (21.7~23.2ft.lb) or (3.0~3.2kgf.m)
Under no
circumstances, should
previously used main
bearing cap bolts be
used again except 1.6L
Alpha engine for which
previous ones can be
re-used.
Please note: There is
no need to additionally
tighten the bolt numbers
17-22 on Lambda engine
and 21-35 on Tau engine.
No.1~20 bolt: (28.9 ±1.45ft.lb) or (4.0 ±0.2kgf.m) + 120˚ Refer to next page for
bolts location and their
No.21~35 bolt: (15.9~18.8ft.lb) or (2.2~2.6kgf.m)
sequence illustration.
August 2009
Page 3 of 3
subject:
Torque Specifications on "Torque to Yield"
Engine Component Bolts
Connecting Rod Cap Bolts
Engine
Alpha
1.6L
Gamma 1.6L
Beta
2.0L
2.0L
Theta
2.4L
Mu
2.7L
Delta
2.7L
3.3L
Lambda
3.8L
Tau
4.6L
Tightening Torque
Remarks
(23.1~25.3ft.lb) or (3.2~3.5kgf.m)
Ok to re-use old bolt
(This is not a torque to
yield bolt).
(14.5±1.45ft.lb) or (2.0±0.2kgf.m) + 90±2˚
(14.5±1.45ft.lb) or (2.0±0.2kgf.m) + 90±2˚
(14.5±1.45ft.lb) or (2.0±0.2kgf.m) + 90±2˚
(14.5ft.lb) or (2.0kgf.m) + 90~94˚
(11.6~14.5ft.lb) or (1.6~2.0kgf.m)+ 90~94˚
(14.5±1.45ft.lb) or (2.0±0.2kgf.m) + 90±2˚
Under no circumstances
should previously used
connecting rod cap bolts
be used again except
on 1.6L Alpha engine,
as indicated above.
(18.1±1.45ft.lb) or (2.5±0.2kgf.m) + 100±2˚
Cylinder head bolt configuration on 4.6L Tau engine
Left hand bank, bank 1
Right hand bank, bank 2
Main bearing cap bolt configuration on both 3.3L & 3.8L Lambda & 4.6L Tau engines
3.3L/3.8L Lambda Engine
4.6L Tau engine
TSB: ENG 050
August 2009