Introduction
Description of assembly, disassembly of disc, caliper, pivot/hub subassembly on Renault Twingo 1 1.2 55cv
Extraction and installation of a new bearing.
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Use a heavy duty ratchet wrench with a 30mm socket and loosen this nut (along with the 4 wheel fixing bolts) before lifting the front of the car.
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Place the front on jack stands , remove the wheel, remove the caliper assembly screws and attach the caliper to the suspension arm.
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Extract the steering ball joint: If you do not have a ball joint extractor, heat the mating area with a hot air torch then strike (gently) laterally with a hammer; the cone will quickly come off.
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Extract the wishbone ball joint axle Remove the tangential screw (16 socket wrench and a 16 socket). Insert the blade of a large flat screwdriver into the slot in the pivot then tap with a hammer to release the ball joint tail from the pivot
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Remove the 2 shock absorber foot screws (18mm socket wrench and 18mm socket)
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Remove the central transmission nut and remove the pivot/hub subassembly
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Extract the hub using an extractor pushing a ring of Ø 34.8 max. The extractor legs are attached to the shapes of the hub
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At this stage one of the inner rings remains in place on the hub. Use a separator coupled with an extractor or more simply grind the ring tangentially with the grinder to a few tenths of a millimeter from the hub. It is now easy to extract it.
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Replace the ring (previously ground) on the bearing, remove the retaining ring, insert a M12 x350 threaded rod fitted with a ring resting on the inner ring + M12 nut.
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On the other side of the hub place a tube Ø int. mini 66 lgr 50, a plate, a nut (see diagram)
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Place the bearing in the freezer for 2 hours and heat the pivot with a hot air blowtorch to approx. 200°
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Position the pivot and the bearing around a M12x350 threaded rod with a nut tightened in the jaws of a vice. (It is advisable to first coat the areas in contact with lithium grease)
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Place a ring, a washer and a nut above the bearing
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Tighten slowly until the bearing is seated at the bottom of the housing.
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Position the pivot and the hub around a M12x350 threaded rod whose lower nut holds a ring resting on the hub
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Then place a ring in support on the inner ring of the bearing, interpose a spacer, a washer and an HM12 nut, tighten gently
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Before fitting, it is advisable to coat the hub and the bore of the bearing ring with lithium grease.
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First insert the splined shaft, and approach the transmission nut. Check that all nuts are correctly tightened. All nuts will be coated with "thread lock" before assembly.
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Fit the steering ball joint. Prevent the axle from rotating by holding it with a 7mm socket wrench. As soon as the cones are in contact, this operation is no longer necessary.
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Assemble shock absorber foot screws
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Fix the ball joint axis of the triangle
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Install the brake caliper, then the disc
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Reassemble the wheel to finish tightening the transmission nut.
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6 Comments
Thanks for this tutorial, job done in 3 hours. I just needed to heat the pivot with a blowtorch to get the bearing out.
It's nice and encouraging to know that this tutorial is helpful, congratulations for having done this work in 3 hours. This work can only be done by people with mechanical training. For example, it is advisable to take the supports on the rings which do not constrain the balls during reassembly ...
Thanks for this tutorial. Just a quick comment about removing the bearing. Unfortunately, I can't make or buy an extractor... I found a mechanic who can remove the old bearing and put the new one back in place, I give 20 euros for the work... not charged, but it's handy. Fortunately, there are mechanics who cooperate. I did the same with the 2 rear brake drums. Now I pray that the front left bearing will last a long time. There you go. Thanks to Oscaro for their site.
good teacher. and merry christmas
bon commentaire bon detail du vecu merci