Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 157
ME(w/o STI)-9
General Description
MECHANICAL
4. CYLINDER BLOCK
ME-05000
T4
T2
T2
T10
T6
T10
T6
T2
T9
T9
(9)
(10)
(10)
(11)
(13)
(25)
(26)
(4)
(4)
(4)
(3)
(3)
(3)
(2)
(5)
(10)
T6
(24)
(17)
(27)
T9
T2
(14)
(28)
T3
(18)
(10)
T2
(29)
(31)
T1
T7
(19)
(20)
(21)
(22)
(30)
(29)
(30)
(12)
(16)
T8
T2
(6)
T2
(10)
T2
(8)
(7)
(15)
(15)
T2
T2
(23)
T9
T6
(1)
T5
(32)
ME(w/o STI)-10
General Description
MECHANICAL
(1)
Oil pressure switch
(16) Water pump sealing
(31) O-ring
(2)
Cylinder block RH
(17) Oil filter connector
(32) Engine rear hanger
(3)
Service hole plug
(18) Oil strainer
(4)
Gasket
(19) Gasket
Tightening torque: N·m (kgf-m, ft-lb)
(5)
Oil separator cover
(20) Oil pan
T1: 5 (0.5, 3.7)
(6)
Water by-pass pipe
(21) Drain plug
T2: 6.4 (0.7, 4.7)
(7)
Oil pump
(22) Drain plug gasket
T3: 10 (1.0, 7.2)
(8)
Front oil seal
(23) Oil level gauge guide
T4: First 12 (1.2, 8.9)
Second 12 (1.2, 8.9)
(9)
Rear oil seal
(24) Oil filter
T5: 16 (1.6, 11.8)
(10) O-ring
(25) Gasket
T6: 25 (2.5, 18.4)
(11) Service hole cover
(26) Water pump hose
T7: 44 (4.5, 32.5)
(12) Cylinder block LH
(27) Plug
T8: 45 (4.6, 33.2)
(13) Water pump
(28) Seal
T9: 70 (7.1, 51.6)
(14) Baffle plate
(29) Washer
INSTALLATION, Cylinder
Block.>
(15) Oil pump seal
(30) Seal washer
ME(w/o STI)-11
General Description
MECHANICAL
5. CRANKSHAFT AND PISTON
(1)
Flywheel
(8)
Snap ring
(15) Crankshaft bearing #1, #3
(2)
Ball bearing
(9)
Connecting rod bolt
(16) Crankshaft bearing #2, #4
(3)
Top ring
(10) Connecting rod
(17) Crankshaft bearing #5
(4)
Second ring
(11) Connecting rod bearing
(5)
Oil ring
(12) Connecting rod cap
Tightening torque: N·m (kgf-m, ft-lb)
(6)
Piston
(13) Crankshaft
T1: 52 (5.3, 38.4)
(7)
Piston pin
(14) Woodruff key
T2: <Ref. to CL-14, INSTALLATION,
ME-05051
T1
T1
(15)
(16)
(15)
(16)
(17)
(8)
(7)
(3)
(4)
(5)
(8)
(6)
(9)
(12)
(11)
(13)
(11)
(10)
(3)
(4)
(5)
(8)
(6)
(7)
(8)
(9)
(10)
(12)
(11)
(11)
(14)
(1)
(2)
T2
ME(w/o STI)-12
General Description
MECHANICAL
6. ENGINE MOUNTING
C: CAUTION
• Prior to starting work, pay special attention to the following:
1. Always wear work clothes, a work cap, and protective shoes. Additionally, wear a helmet, protective
goggles, etc. if necessary.
2. Protect the vehicle using a seat cover, fender cover, etc.
3. Prepare the service tools, clean cloth, containers to catch grease and oil, etc.
• Vehicle components are extremely hot immediately after driving. Be wary of receiving burns from heated
parts.
• When performing a repair, identify the cause of trouble and avoid unnecessary removal, disassembly and
replacement.
• Before disconnecting connectors of sensors or units, be sure to disconnect the ground cable from battery.
• Always use the jack-up point when the shop jacks or rigid racks are used to support the vehicle.
• Remove or install the engine in an area where chain hoists, lifting devices, etc. are available for ready use.
When lifting up the vehicle, make sure to support the vehicle at the jack-up points.
• Be careful not to let any oil or grease contact the clutch disc, flywheel or timing belt.
• Remove contamination including dirt and corrosion before removal, installation, disassembly or assembly.
• Keep the removed parts in order and protect them from dust and dirt.
• All removed parts, if to be reused, should be reinstalled in the original positions with attention to the correct
directions, etc.
• Rotating parts and sliding parts such as piston, bearing and gear should be coated with oil when being as-
sembled.
• Bolts, nuts and washers should be replaced with new parts as required.
• Be sure to tighten the fasteners including bolts and nuts to the specified torque.
(1)
Front cushion rubber
Tightening torque: N·m (kgf-m, ft-lb)
T1: 35 (3.6, 25.8)
T2: 45 (4.6, 33.2)
ME-07037
(1)
T2
T1
T1
T2
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