How to Replace Alternator 99-04 Volvo V70

Difficulty: Advanced · About 110 min · Volvo V70

Replace the alternator, including moving the power steering pump and radiator fan for access, on a 1999-2004 Volvo V70.

Steps

1. Disconnect the battery

   Remove the battery bracket's three 13mm bolts, lift the bracket up, remove the battery cover, then disconnect the negative cable with a 10mm wrench.

2. Remove the radiator fan and power steering reservoir

   Disconnect the air intake hose, remove the connectors from the fan control unit and EGR purge valve, cut their zip ties, remove the purge valve's 10mm screw and the radiator's two 10mm retaining screws, remove the plastic clip from the power steering line at the dipstick tube, pull the EGR purge hose off the fan, pull the fan up and out, then remove the power steering tube's clip and pry the reservoir out of the way.

3. Remove the serpentine belt

   Insert a 14mm socket and ratchet into the tensioner, turn it clockwise to loosen the belt, pull the belt off the alternator, release the tensioner, then pull it off the rest of the way by hand.

4. Move the power steering pulley

   Remove the pump pulley's three 12mm bolts, remove the wiring harness from it, then pull the pump up and out of the way.

5. Remove the old alternator

   Remove the power wire's cap, disconnect the wiring harness, remove the 13mm nut from the positive cable, remove the A/C compressor's two 12mm bolts and loosen the ones underneath it, remove the 13mm bolt from the top of the alternator, then pull it up and out.

6. Install the new alternator

   Push it down into place, insert its top 13mm bolt, insert the A/C compressor's 12mm bolts and tighten the ones underneath, fasten the 13mm nut to the positive cable, connect the wiring harness, then push the cap back onto the power wire.

7. Reinstall the power steering pump

   Lower it into place, insert its three 12mm pulley bolts, then connect its wiring harness.

8. Reinstall the serpentine belt

   Familiarize yourself with the routing, loop the belt following the diagram, pull it over the alternator, pull the tensioner clockwise with the 14mm socket, then release it.

9. Reinstall the power steering reservoir and radiator fan

   Push the reservoir back into place and refit the tube's retaining clip, slide the fan into place, insert the EGR purge hose onto its top and its 10mm bolt, reconnect the fan control and EGR purge valve connectors, wire-tie the cables back in place, insert the radiator's two 10mm screws, refit the dipstick tube clip, then reconnect the air intake hose.

10. Reconnect the battery

    Reconnect the negative cable with the 10mm wrench, replace the battery cover, then refit the bracket and its three 13mm bolts.

Check your vehicle’s repair manual for exact specifications and fit.