Fix It

Designed by Jan Wilsgaard, the Volvo 850 is a compact executive car available in both sedan and station wagon body styles. With features not previously offered in a Volvo, it was the first front-wheel drive Volvo exported to North America. One of several different engines can be found inside any given Volvo 850.

B 5204 S Engine

Used in Volvo 850s every year from 1992 to 1994, the B 5204 S engine is a 5-cylinder 2.0-liter engine with four valves per cylinder. The compression ratio is 10.3 to 1 and its output is 143 horsepower at 6500 rpm. Its max torque is 17.9 kpm at 3800 rpm.

B 5254 Engine

The B 5254 S engine has a compression ratio of 10.5 to 1. The output of the non-turbo version is 170 horsepower at 6200 rpm. It is a 5-cylinder, 2.5-liter engine with a max torque of 22.4 kpm at 3300 rpm. A low-pressure turbo version of this engine was made, the B 5254 T, which had 190 horsepower.

B 5252 S Engine

Found in Volvo 850 cars produced in 1993 and 1994, the B 5252 S engine has a compression ratio of 10.0 to 1. It is a 5-cylinder, 2.5-liter engine with an output of 140 horsepower at 5400 rpm and the max torque is 21.0 kpm at 3600 rpm. This engine was used exclusively for the Canadian market.

B 5234 T Engine

This high-pressure turbo engine with increased boost can only be found in Volvo 850 cars produced in 1994. This 5-cylinder, 2.3-liter engine has a compression ratio of 8.5 to 1, with an output of 225 horsepower to 5280 rpm. Its max torque is 30.6 kpm at 2000-5280 rpm.

The Volvo 850 is a compact executive car sold on the North American market from 1992 to 1997. Options included several body styles and a choice of engines. This front-wheel drive vehicle requires periodic axle service and occasional replacement of the axle.

Instructions

Removal Procedure

1

Remove the front wheel and the ABS sensor from the steering swivel member. Take out the brake pipe bracket and ABS lead. Unhook the bracket, and let it hang free. Remove the drive shaft center nut. Pull out the split pin from the hub center nut. Use counter-hold tool No. 999 5461 (on models with four wheel bolts) or tool No. 999 5540 (on models with five wheel bolts), and remove the nuts. Disconnect the drive shaft end from the hub.

2

Tap the shaft end in approximately 10 to 15 millimeters, using a plastic or copper mallet. Remove the link arm from the anti-roll bar and the nuts holding the link arm and ball joint together. Unhook the link arm from the ball joint.

3

Remove the drive shaft from the hub. First, twist and pull out the strut. Then tap on the drive shaft end with a plastic or copper mallet to remove it from hub. Clean the metal glue from the spline joint (hub-drive shaft).

4

Pull out the bearing caps from the drive shaft support bearing and the drive shaft gearbox if you are working on the right axle. Take care not to damage the seals in the transmission and drive shaft boot (gaiter). If you are working on the left axle, use prying tool No. 999 5462 to remove the drive shaft from the transmission. Do this by applying leverage between the transmission and the inside of the drive shaft.

Installation Procedure

5

Inspect the ABS sensor. It should be free of dirt. Push in the drive shaft, ensuring that its clip engages in the differential groove. Take care not to damage the drive shaft seal or boots. Install the bearing cap. Tighten it by applying 18 foot pounds of torque.

6

Install the drive shaft in the hub. Apply metal glue to the drive shaft splines. Twist and remove the strut, and fit the drive shaft into the hub. Use a socket wrench to hold the link arm down. Install a new drive shaft nut, and hand-tighten it.

7

Install the link arm onto the ball joint. Use new nuts. Ensure that the mating surfaces on the ball joint and the link arm are clean and free of grease. Tighten the nuts to 13 foot pounds, plus an additional 120 degrees. Apply a rust proofing agent to the areas between the ball joint, link arm and nuts.

8

Link the arm to the anti-roll bar with new nuts, and tighten them to 37 foot pounds. Tighten the drive shaft center nut. Use counter-hold tool No. 999 5461 (on models with four wheel bolts) or tool No. 999 5540 (on models with five wheel bolts). Tighten the nuts to 89 foot pounds, plus an additional 60 degrees. Lock the drive shaft center nut. Use a chisel to tap the locking nut flange into the drive shaft slot.

9

Install the brake pipe/ABS lead bracket. Ensure that the ABS sensor seat is absolutely clean. Clean the ABS sensor with a soft brush, fit it onto wheel shaft and tighten it to eight foot pounds. Install the front wheel. Ensure that brake disc and pad contact surfaces are clean.