engine VOLVO 850 1996 Workshop Manual

1996 Volvo 850

Air pump system (B5254S)

When the engine is being started from cold, an electrical air pump which\
draws air to the exhaust system
is activated. This starts an afterburning process which leads to reduced\
hydrocarbon and carbon
monoxide (HC and CO) emissions and reduces the warm-up period for the \
catalytic converter.
The pump starts when the car has been started and is moving. It continue\
s to work until the catalytic
converter has reached normal working temperature, although it can also s\
tart when the engine is idling.
If the air pump is running and the engine is switched off, the pump cont\
inues working in order to protect
the pump motor.
Note! A soft whining noise can be heard from the pump, and when it perfo\
rms a self-diagnosis, the high/
low beam and the instrument lighting will flash briefly. This is complet\
ely normal. pg. 8:15 Windshield washer nozzles, Washer fluid reservoir

Adjusting washer nozzles

The washer jets should spray the windshield as shown above. Use the edge\
of a small screwdriver to
adjust the nozzles if necessary.
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1996 Volvo 850


Washer fluid reservoir

The washer fluid reservoir is located in the engine compartment and hold\
s approx. 3.2 US qts. (3.0
liters).
During cold weather, the reservoir should be filled with windshield wash\
er solvent containing anti-
freeze. pg. 8:16 Coolant
Check coolant level

The cooling system must be filled with coolant and not leak to operate a\
t maximum efficiency. Check
the coolant level regularly. The level should be between the "MAX" and "\
MIN" marks on the expansion
tank. The check should be made with particular thoroughness when the eng\
ine is new or when the
cooling system has been drained.
Do not remove the filler cap other than for topping up with coolant. Fre\
quent removal may prevent
coolant circulation between the engine and the expansion tank during eng\
ine warm up and cooling.

Changing coolant

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1996 Volvo 850

Normally, the coolant does not need to be changed. If the system must be\
drained, use the following
procedure:
1 Remove the expansion tank cap.
2 Move the temperature adjustment control to max. heat. Open the drain c\
ocks at the rear left of the
engine block and at the bottom right corner of the radiator.
3 Disconnect the lower right radiator hose.
Filling:
4 Close the drain cocks and reconnect the hose.
5 Fill the expansion tank to the MAX mark or slightly above.
6 Run the engine until hot. Check the cooling system connections for tig\
htness. Recheck the coolant
level.

Capacity: Approx. 7.6 US qts. (7.2 liters)
Turbo - 7.4 US qts. (7.0 liters)

Coolant: Volvo Genuine Coolant/Antifreeze only

NOTE: Do not top up with water only. Water by itself reduces the rust-pr\
otective and anti-freeze
qualities of the coolant and has a lower boiling point. It can also caus\
e damage to the cooling system if it
should freeze.
WARNING: If the engine is warm and you are going to top up coolant, unsc\
rew the cap slowly in
order to allow any excess pressure to escape.
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1996 Volvo 850
CAUTION: The cooling system must always be kept filled to correct level.\
If it is not kept filled, there
can be high local temperatures in the engine which could result in damag\
e. Different types of anti-
freeze/coolant may not be mixed.
pg. 8:17 Engine compartment
Engine compartment 850
(engine B 5254 S / B 5252 S)


1 Expansion tank, coolant
2 Engine designation plate
3 Oil filler cap, engine
4 Clutch/brake system fluid reservoir
5 Fuse box
6 Washer fluid reservoir
7 Power steering fluid reservoir
8 Dipstick - engine oil
9 Dipstick - automatic transmission
10 Air cleaner
11 Battery
12 Data plate
WARNING! The cooling fan may start or continue to operate (for up to 6 \
minutes) after the engine has
been switched off.
pg. 8:18 Engine compartment (cont.)
Engine compartment 850 Turbo
(engine B 5234 T)
1 Expansion tank, coolant
2 Engine designation plate
3 Oil filler cap, engine
4 Clutch/brake system fluid reservoir
5 Fuse box
6 Washer fluid reservoir
7 Power steering fluid reservoir
8 Dipstick - engine oil
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1996 Volvo 850
9 Dipstick - automatic transmission
10 Air cleaner
11 Battery
12 Data plate
WARNING! The cooling fan may start or continue to operate (for up to 6 \
minutes) after the engine has
been switched off.




Contents | Top of Page
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1996 Volvo 850
Specifications
pg. 9:1 Specifications
Specifications

This chapter contains facts and figures pertaining to the technical spec\
ifications of your car.

9:2 Oil/Fluids specifications
9:3Engine specifications
9:4Cooling/fuel distributor ignition systems
9:4Front/rear suspensions
9:5Transmission, Capacities, Vehicle
loading
9:6
Electrical system/bulbs
9:7Dimensions and weights
9:8Service manuals, Road assistance
pg. 9:2 Oil/Fluids Specifications
Oil quality

Meeting API specification SG, SG/CD, SH or Energy Conserving (EC) II \
For best fuel economy and engine protection, consult with your authorize\
d Volvo retailer for
recommended oils. Oil with a different quality rating may not provide ad\
equate engine protection.
Synthetic oils complying with oil quality requirements are recommended. \
Volvo recommends the use of
fuel economy improving oils. Look for the API label.
Synthetic oils complying with oil quality requirements are recommended f\
or: Driving in areas of
sustained temperature extremes (hot or cold), when towing a trailer ov\
er long distances or for prolonged
driving in mountainous areas.
Extra oil additives must not be used unless advised by an authorized Vol\
vo retailer.

Viscosity (stable ambient temperatures):
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1996 Volvo 850

Engine oil Quality: Meeting API specification SG
or SH Capacity (incl. filter): 850 (5-
cyl. engine) 5.6 US qts./5.3
liters (certain models: 6.1 US
qts./5.8 liters)
850 Turbo - 5.6 US qts. (5.3
liters)*
Automatic transmission
fluid Quality: ATF Dexron IIE/ III and
Mercon Capacity: 8 US qts. (7.6 liters)
Manual transmission fluid Quality: Volvo synthetic gearbox oil
1161423 Capacity: 2.2 US qts (2.1
liters)
Power steering fluid Quality: ATF Capacity: 0.85 US qts. (0.8
liters)
Brake fluid Quality: DOT 4+ Capacity: 0.64 US qts. (0.6
liters)

All specifications are subject to change without notice.

* Add 0.95 qts. (0.9 liters) if the oil cooler has been drained Capaci\
ty: 8 US qts (7.6 liters)
pg. 9:3 Specifications
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1996 Volvo 850
Engine

Liquid-cooled gasoline, 5-cylinder, in-line engine. Aluminum alloy cylin\
der block with cast-iron
cylinder liners cast directly into block. Aluminum alloy cylinder head w\
ith double overhead camshafts
and separate intake and outlet channels.
Engine lubrication is provided by an eccentric pump driven from the cran\
kshaft. Full-flow type oil filter.
Exhaust emission control accomplished by fuel injection, heated oxygen s\
ensor(s) and three-way
catalytic converter
Designation Volvo B 5252 S Volvo B 5234
850 R Turbo Volvo B 5254 S Volvo B 5234 T
Turbo
Output 142 hp at 5400
rpm (106 kw/90
rps) 222 hp at 5280
rpm* (166 km/88
rps)* 168 hp at 6200
rpm (125 kw 103
rps) 222 hp at 5280
rpm (166 km/88
rps)
Max torque 152 lbs. at 3600
rpm (206 Nm/60
rps) 221 ft. lbs. at 2000-
5280 rpm (300
Nm/33-88 rps)* 162.3 ft. lbs. at
4700 rpm (220
Nm/55 rps) 221 ft. lbs. at 2000-
5280 rpm (300
Nm/33-88 rps)
Number of
cylinders 5
5 5 5
Bore 3.27" (83 mm) 3.19" (81 mm) 3.27" (83 mm) 3.19" (81 mm)
Stroke 3.54" (90 mm) 3.54" (90 mm) 3.54" (90 mm) 3.54" (90 mm)
Displacement 2.4 liters 2.3 liters 2.4 liters 2.3 liters
Compression ratio 10.0:1 8.5:1 10.5:1 8.5:1
Number of valves 10 20 20 20
Valve clearance Self-adjusting Self-adjusting Self-adjusting Self-adjusting

* The 850 R turbo engine generates increased power on cars equipped with\
an automatic transmission
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1996 Volvo 850
for 30 seconds:

237 hp at 5600 rpm (177 Kw at 94 rps)
Torque:
221 ft. lbs. at 2000-5600 rpm (300 Nm at 33-94 rps)

The output power on cars with a manual transmission is:
247 hp at 5400 rpm (184 Kw at 90 rps)
Torque:
258 ft. lbs. at 2400-5000 rpm (350 Nm at 40-83 rps)

All specifications are subject to change without notice. pg. 9:4 Specifications
Cooling system

Type: Positive pressure, closed system
Thermostat begins to open at 186°F (90°C)
Turbo 180° F (87° C)
Coolant: Volvo original coolant/anti-freeze
Capacity: 7.6 US qts. (7.2 liters)
Turbo - 7.4 US qts. (7.0 liters)

Fuel system

The engine is equipped with a multiport fuel injection system

Distributor ignition system

Firing order 1-2-4-5-3
Distributor ignition setting Not adjustable
Spark plugs Bosch FR 6 DC (or equivalent)
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1996 Volvo 850
1st gear 3.07:1
2nd gear 1.77:1
3rd gear 1.19:1
4th gear 0.87:1
5th gear 0.70:1
Reverse 2.99:1

Automatic transmission: AW 50-42 LE
4-speed automatic electronically controlled gearbox comprising a hydraul\
ic torque converter with a lock-
up function; planetary gear, integrated final drive.
Operation via a floor mounted gear selector lever. Drive shafts with sym\
metrical joint location.

Final drive ratio 2.74:1 (Turbo: 2.54:1)
Reduction ratios
1st gear 3.61:1
2nd gear 2.06:1
3rd gear 1.37:1
4th gear 0.98:1
Reverse 3.95:1

Capacities

Fuel tank 19.3 US gals (73 liters)
Cooling System 7.4 US qts. (7.0 liters)
Engine oil (incl. filter) 5.6 US qts. (5.3 liters)*
Automatic transmission 2 US gals (7.6 liters)
Manual transmission 2.2 US qts. (2.1 liters)
Power steering fluid 0.8 US qts. (0.8 liter)
Washer fluid reservoir 3.2 US qts. (3.0 liters)
Brake/clutch system 0.6 US qts (0.6 liters)

* Certain models: 6.1 US qts. (5.8 liters)
Turbo: Add 0.95 US qt. (0.9 liters) if the oil cooler has been drained\
.

Vehicle Loading

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