Monday, June 24, 2024

Volvo P1 – S40/C30/V50/C70 Front Brake Replacement

Updating Worn Brakes & Rotors Quickly

This overview will cover the basic pad and rotor replacement on the front brakes for P1 models. For this servicing, we are still using the factory replacements, so essentially the stock components, not any upgraded or “Big Brake” kits.

IPDUSA is our go to choice for replacement Volvo parts because of the price and the fast shipping. Part number links are to Factory Part Numbers for Reference:

Brake Pads: 280mm (rare), 300mm (30793618) and 320mm (30742029)
Rotors: 280mm (rare), 300mm (31471819) and 320mm (31400942)

Pad size and rotor size will depend on the trim model of your vehicle. For the most part, your fronts will be 300mm. 320mm came on the T5 M66 (manual transmission), and in some rare cases the 280mm will be for the 2.4 auto tranny. You can cross reference your vin with the local dealer for the exact part number.

Step 1: Break the lug nuts loose before jacking up the car. Most Volvo lugs, we have found, are a 19mm.

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volvo s40 brake job

Step 2: Jack up the car, and place your jack stand in place to secure the car. We always leave the jack in place with a little tension as added security.

volvo v50 brake job

Step 3: Remove the lugs and pull the wheel off the hub assembly.

volvo s40 brake and rotor replacement

Step 4: Since we are replacing the rotors, we are pulling the entire caliper assembly off. Do this by locating the 2 13mm bolts on the back of the hub assembly. Remove these and set your caliper aside, be sure to support it somehow so you are not letting it hang by the brake line. We just set ours on top of the hub assembly.

remove volov s40 c30 v50 c70 front caliper volvo c40 c30 v50 c70 remove front rotor brake

Step 5: Remove the rotor and compare it to the new one you purchased to make sure it is the correct size. Then slide the new one into place.

new vs old volvo s40 c30 v50 c70 rotors turning rotors volvo s40 c30 v50 c70 install new rotor volvo s40 c30 c70 v50

Step 6: Make room for the new brake pads. Remove the small retainer clip that simply “plugs’ into the caliper. Just pop it off with a screwdriver by prying it away.

volvo s40 c30 c70 v50 caliper retainer clip
retainer clip caliper volvo s40 c30 c70 v50 removal

Step 7: Pry out the old pads, and then compare them to your new ones. The pad against the caliper piston has 3 prongs holding it in place, so be forceful with your prying.

front brake pad volvo s40 c30 c70 v50
new vs old brake pads volvo s40 c30 c70 v50

Step 8: Compress the caliper piston back all the way to make room for the new pads and rotors. When simply replacing pads, you may be able to avoid this step, but since the pads and rotors are new and at full meat, we needed to make room.

Initially we tried a simply C-clamp, but then went to the toolbox for our caliper compression tool. This was a cheap tool we use all the time. And for the rear brakes it is a must since those pistons must rotate while being compressed. Our Harbor Freight tool, Maddox Disc Brake Pad And Caliper Service Tool Kit 11 Pc, has lasted years.

compress caliper with c clamp volvo brake caliper compressor tool brake tool to compress calipersvolvo s40 c30 c70 v50 compress caliper

Step 9: Prepare the new pads with your favorite “quiet grease”. We applied it to all places where metal meets metal as well as in the sliding grooves.

new brake pads with grease volvo s40 c30 c70 v50

Step 10: Slide the new pads into place. The piston side pad will require some force to seat the prongs. Make sure it is seated evenly and flush to the piston.

fomoco brake caliper volvo s40 c30 c70 v50

Step 11: Put the caliper assembly back on the wheel hub assembly. Torque the bolts to spec. 120 Nm or 89 ftlbs.

new brakes volvo s40 c30 c70 v50

Step 12: Pop the retainer clip back into place.

new rotors volvo s40 c30 c70 v50 installed

Replace the wheel, lower the car, torque lug nuts. Start the car, pump the brakes to regain pressure and then do a test drive in a controlled area.

Joel Kenneth Smith
Joel Kenneth Smith
Living in Southern California since 84', Joel has been around the import scene for decades. Aside from a few of his own builds, he now keeps a close eye on the beat for new and upcoming rides. Further, he is a major contributor to the "How To" section of the website and doesn't mind hunting down choice parts at any local yard.

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