1997 SUBARU LEGACY coolant

E: INSTALLATION
1. OIL PUMP AND ENGINE COOLANT PUMP
B2M0124B
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 5 (0.5, 3.6)
T2: 6.4 (0.65, 4.7)
T3: 10 (1.0, 7)
T4: 72±3 (7.3±0.3, 52.8±2.2)
T5: First 12±2 (1.2±0.2, 8.7±1.4)
Second 12±2 (1.2±0.2, 8.7±1.4)
72
2-3SERVICE PROCEDURE
7. Cylinder Block

B2M0390A
(2) Apply fluid packing to matching surface of oil pump.
Fluid packing:
THREE BOND 1215 or equivalent
(3) Install oil pump on cylinder block. Be careful not to
damage oil seal during installation.
CAUTION:
Do not forget to install O-ring and seal when install-
ing oil pump.
Align flat surface of oil pump’s inner rotor with
crankshaft before installation.
G2M0628
9) Install engine coolant pump and gasket.
CAUTION:
Be sure to use a new gasket.
When installing engine coolant pump, tighten bolts
in two stages in numerical sequence as shown in Fig-
ure.
10) Install engine coolant pipe.
11) Install oil filter.
2. RELATED PARTS
1) Install cylinder head and intake manifold.

2) Install timing belt, camshaft sprocket and related parts.

74
2-3SERVICE PROCEDURE
7. Cylinder Block

2. Engine Noise
Type of sound Condition Possible cause
Regular clicking soundSound increases as engine
speed increases.Valve mechanism is defective.
Incorrect valve clearance
Worn valve rocker
Worn camshaft
Broken valve spring
Heavy and dull clankOil pressure is low.Worn crankshaft main bearing
Worn connecting rod bearing (big end)
Oil pressure is normal.Loose flywheel mounting bolts
Damaged engine mounting
High-pitched clank
(Spark knock)Sound is noticeable when
accelerating with an overload.Ignition timing advanced
Accumulation of carbon inside combustion chamber
Wrong spark plug
Improper gasoline
Clank when engine speed is
medium (1,000 to 2,000 rpm).Sound is reduced when fuel
injector connector of noisy
cylinder is disconnected.
(NOTE*)Worn crankshaft main bearing
Worn bearing at crankshaft end of connecting rod
Knocking sound when engine
is operating under idling speed
and engine is warm.Sound is reduced when fuel
injector connector of noisy
cylinder is disconnected.
(NOTE*)Worn cylinder liner and piston ring
Broken or stuck piston ring
Worn piston pin and hole at piston end of connecting rod
Sound is not reduced if each
fuel injector connector is
disconnected in turn. (NOTE*)Worn camshaft journal bore in crankcase
Squeaky sound—Insufficient generator lubrication
Rubbing sound—Defective generator brush and rotor contact
Gear scream when starting
engine—Defective ignition starter switch
Worn gear and starter pinion
Sound like polishing glass with
a dry cloth—Loose drive belt
Defective engine coolant pump shaft
Hissing sound—Loss of compression
Air leakage in air intake system, hoses, connections or
manifolds
Timing belt noise—Loose timing belt
Belt contacting case/adjacent part
Valve tappet noise—Incorrect valve clearance
NOTE*:
When disconnecting fuel injector connector, Malfunction Indicator Light (CHECK ENGINE light) illuminates and trouble code is stored in
ECM memory.
Therefore, carry out the CLEAR MEMORY MODE and INSPECTION MODE after connecting fuel injector connector. (Ref. to 2-7 On-Board
Diagnostics II System.)
78
2-3DIAGNOSTICS
2. Engine Noise

4. Cylinder Block
B2M0381A

1Oil pressure switch


2Cylinder block (RH)


3Service hole plug


4Gasket


5Oil separator cover


6Water pipe


7Oil pump


8Front oil seal


9Rear oil seal


10O-ring


11Service hole cover


12Cylinder block (LH)


13Engine coolant pump


14Baffle plate


15Oil strainer stay


16Oil strainer

17Gasket


18Oil pan


19Oil drain plug


20Gasket


21Oil filler pipe
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 5 (0.5, 3.6)
T2: 6.4 (0.65, 4.7)
T3: 10 (1.0, 7)
T4: 25±2 (2.5±0.2, 18.1±1.4)
T5: 47±3 (4.8±0.3, 34.7±2.2)
T6: 69±7 (7.0±0.7, 50.6±5.1)
T7: First 12±2 (1.2±0.2, 8.7±1.4)
Second 12±2 (1.2±0.2, 8.7±1.4)
9
2-3bCOMPONENT PARTS
4. Cylinder Block

G2M0709
1. General Precautions
1) Before disassembling engine, place it on ST3.
ST1 498457000 ENGINE STAND ADAPTER RH
ST2 498457100 ENGINE STAND ADAPTER LH
ST3 499817000 ENGINE STAND
2) All parts should be thoroughly cleaned, paying special
attention to the engine oil passages, pistons and bearings.
3) Rotating parts and sliding parts such as piston, bearing
and gear should be coated with oil prior to assembly.
4) Be careful not to let oil, grease or coolant contact the
timing belt, clutch disc and flywheel.
5) All removed parts, if to be reused, should be reinstalled
in the original positions and directions.
6) Gaskets and lock washers must be replaced with new
ones. Liquid gasket should be used where specified to
prevent leakage.
7) Bolts, nuts and washers should be replaced with new
ones as required.
8) Even if necessary inspections have been made in
advance, proceed with assembly work while making
rechecks.
11
2-3bSERVICE PROCEDURE
1. General Precautions

B2M0737
7) Remove left-hand belt cover No. 2.
B2M0738
8) Remove right-hand belt cover No. 2.
B: INSPECTION
1. TIMING BELT
1) Check timing belt teeth for breaks, cracks, and wear. If
any fault is found, replace belt.
2) Check the condition of back side of belt; if any crack is
found, replace belt.
CAUTION:
Be careful not to let oil, grease or coolant contact
the belt. Remove quickly and thoroughly if this hap-
pens.
G2M0115
Do not bend the belt sharply.
Bending radius: h
60 mm (2.36 in) or more
18
2-3bSERVICE PROCEDURE
2. Timing Belt

4. Cylinder Head
A: REMOVAL
1. INTAKE MANIFOLD
1) Remove V-belt.
2) Remove generator, air conditioner compressor and
brackets.
3) Remove hoses and tubes from cylinder block.
4) Disconnect each connector and/or remove connector
bracket.
5) Remove coolant filler tank.
6) Remove intake manifold assembly and gasket.
7) Remove water pipe.
8) Remove crank angle sensor, cam angle sensor and
knock sensor.
9) Remove timing belt, camshaft sprockets and related
parts.

10) Remove rocker cover, camshafts and related parts.

2. CYLINDER HEAD
B2M0770A
36
2-3bSERVICE PROCEDURE
4. Cylinder Head

2) Install camshaft sprockets, timing belt and related parts.

B2M0702
B2M0703
3) Install engine coolant pipe.
CAUTION:
Use new gaskets.
47
2-3bSERVICE PROCEDURE
4. Cylinder Head