Changing the brake shoe + rear cylinder on Renault 4L

With the vehicle on the ground, loosen the wheel fixing nuts

Raise the vehicle and secure the lift with a jack stand

Finish unscrewing the nuts and remove the wheel

Extract the cabochon by pulling on it

Use a small screwdriver as a chisel and insert it between the cap and the drum then gently pry it up.

Extract the pin by pulling upwards and remove the nut lock (red circle)

Unscrew the nut

Pull the drum, play lightly if necessary.

Take the opportunity to clean the outer bearing and the inside of the drum (track) by removing the old grease

Disconnect the lower spring

Using a screwdriver, unhook the 2 springs securing the jaws and remove the jaws.

Unscrew the brake hose at the rear of the flange

Very high probability of breaking/rounding the head, do not skimp on the penetrating oil and use a pipe wrench.

Unscrew the 2 nuts of 10 at the back of the cylinder then push it to release it

Take the opportunity to clean the flange and the inside of the drum and remove all deposits/dust.

Install the new cylinder, tighten the 2 nuts and reconnect the brake hose

Put the 2 linings in place, being careful not to tear the rubbers from the wheel cylinder

In the case of pre-assembled trim, remove the 2 springs (upper and lower, red box), position one of the two jaws, attach the upper spring to it, put the second jaw in place, reconnect the upper spring. (To "pull" the spring using pliers to position it in the housing)

Make sure that the 2 jaws are correctly in place at the top, place each one behind the small lower retaining tab then reconnect the lower spring (Same technique for the upper spring)

For ease of access, I always start with the jaw housing the handbrake system if there is a handbrake.

Then reconnect the 2 jaw retaining springs (green circle) (Place the springs in the holes, and using a flat screwdriver press on the hook to put the spring under tension and thus be able to hook it into the metal clip, same procedure as removal)

Put the drum back in place and re-grease the inside (don't hesitate to put "too much")

Replace the bearing, the plate, tighten the nut until the drum "grabs" (difficulty turning it by hand) then loosen the nut a quarter turn

Replace the nut lock and safety pin

Then replace the cabochon, stuffing it with grease.

Using bearing grease