2003 SUBARU LEGACY alternator

11-22Drive belts
The alternator, power steering pump, and air conditioner compressor de-
pend on drive belts. Satisfactory performance requires that belt tension
be correct.
2.5 liter models
HGA005BB
in (mm)
Deflection
New beltUsed belt
10.28 — 0.35
(7.0 — 9.0)0.35 — 0.43
(9.0 — 11.0)
20.30 — 0.33 (7.5 — 8.5)0.35 — 0.40
(9.0 — 10.0)
To check belt tension, place a straightedge (ruler) across two adja-
cent pulleys and apply a force of 22 lb (98 N, 10 kg) midway betweenthe pulleys by using a spring scale. Belt deflection should be the
amount specified. 3.0 liter models
It is unnecessary to check belt tension periodically because your
engine is equipped with an automatic belt tension adjuster. However,
replacement of the belt should be done according to the maintenance

12
Specifications12-3
–
CONTINUED –
Overall height 62.2 in (1,580 mm)
Ground clearance
2.5 liter models 7.3 in (185 mm)
3.0 liter models 7.9 in (200 mm)
Front tread 57.9 in (1,470 mm)
Rear tread 57.7 in (1,465 mm)
Wheelbase 104.3 in (2,650 mm)
Engine 2.5 liter
Engine model EJ251
Engine type Horizontally opposed, liquid cooled
4 cylinder, 4 stroke gasoline engine
Engine displacement 2,457 cc (150 cu in.)
Bore 3.92 in (99.5 mm)
Stroke 3.11 in (79.0 mm)
Compression ratio 10.0 : 1
Firing order 1 - 3 - 2 - 4 3.0 liter
Engine model EZ30D
Engine type Horizontally opposed, liquid cooled 6 cylinder, 4 stroke gasoline engine
Engine displacement 3,000 cc (183.0 cu in.)
Bore 3.51 in (89.2 mm)
Stroke 3.15 in (80.0 mm)
Compression ratio 10.7 : 1
Firing order 1 - 6 - 3 - 2 - 5 - 4
Electrical system 2.5 liter
Battery type and capacity
MT: 55D23L
AT: 75D23L
Alternator 12V-90A

12-4Spark plugs type RC10YC4 (Champion)
BKR6E-11 (NGK) BKR5E-11 (NGK)
3.0 liter
Battery type and capacity 75D23L
Alternator 12V-100A
Spark plugs type PLFR6A-11 (NGK)
Capacities
Fuel tank 16.9 US gal (64 liters, 14.1 Imp gal)
Engine oil 2.5 liter 4.2 US qt (4.0 liters, 3.5 Imp qt)
3.0 liter 5.9 US qt (5.6 liters, 4.9 Imp qt)
Transmission oil (MT) 3.7 US qt (3.5 liters, 3.1 Imp qt)
Transmission fluid (AT) 9.8 US qt (9.3 liters, 8.2 Imp qt)
AT differential gear oil 1.3 US qt (1.2 liters, 1.1 Imp qt)
Rear differential gear oil Brighton, L (AT) 0.9 US qt (0.9 liter, 0.8 Imp qt)
Others 0.8 US qt (0.8 liter, 0.7 Imp qt)
Power steering gear fluid 0.7 US qt (0.7 liter, 0.6 Imp qt)
Engine coolant 2.5 liter MT 7.2 US qt (6.8 liters, 6.0 Imp qt) AT 7.1 US qt (6.7 liters, 5.9 Imp qt)
3.0 liter 8.4 US qt (7.9 liters, 7.0 Imp qt)
Tires Legacy
Type Steel belted radial, Tubeless
Size Brighton P195/60R15 87H L P205/60R15 90H
GT P205/55R16 89H
Temporary spare T135/70D16
T145/80D16*1
Pressure Front Brighton 33 psi (230 kPa, 2.3 kg/cm 2
)
GT, L 32 psi (220 kPa, 2.2 kg/cm 2
)
Rear Brighton 32 psi (220 kPa, 2.2 kg/cm 2
)

12
Specifications12-11
–
CONTINUED –
Fuse panel Circuit
Fuse rating
710AAutomatic transmission control unit
ABS UNIT
810AAlternator
915AHeadlight (right side)
1015AHeadlight (left side)
1120ALighting switch
1215AClock
Interior light

12-12
3.0 liter models
HBC004BC
Fuse panelFuse ratingCircuit
130ARadiator cooling fan (Main)
230ARadiator cooling fan (Sub)
350AABS (VDC) motor
430AMcIntosh audio amp (if equipped)
520ARear window defogger
615AHazard warning flasher
Horn
715AMeter
SRS airbag system warning light
810AAutomatic transmission control unit
ABS UNIT
910AAlternator
1015AHeadlight (right side)