Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. 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

T10: <Ref. to ME(w/o STI)-81, 

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, 

Flywheel.>

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