Tech B c. Both A and B d. If not, look on ebay for "Penrite red rubber" grease. The rotor should fell toward the steering knuckle. 5. L~J. Bleed brake system to relieve any air in the system. In turn, that swelling inhibits the piston retraction, causing the brake to ride. This is done to prevent brake fluid from leaking out during repair. 6. Your brake system relies on a number of moving parts to achieve consistent, safe braking. Best to replace the bushings every three brake jobs or Pic 3 are the first items removed from the hub carrier bolt removal (washer and rubber bushing). Mix up a bucket of water and dish soap and get an old toothbrush. I don't think there will be an issue with the seals etc as the DOT 5 is much less caustic. I tested the caliper on the car (after experiencing high wheel heat and brake smell from that corner), and the piston pressed out fine under hydraulic pressure, but was extremely tough to push back in. Likewise the factory rubber caliper bushings work well. 25 34 21 1 237 234 SET: REPAIR BRAKE CALIPER - D=38MM 0.04 1 $28.15 I've not ripped into the caliper yet but---if I do choose to replace due to pitting where do I source the 38mm piston? And wondering about the caliper paint smearing. caliper to the caliper bracket. If you plan on changing your hydraulic filter after repairs, it is best to test everything first in case you have to tear it apart again to fix a leak. Loosen the caliper assembly bolts with the Torx 40 driver. Set the banjo bolt and sealing washers aside. At the end of the depression, the pedal should be held as if the brakes were applied. Replace brake drum (Chapter 6). 6 Wheel bearings damaged or worn (Chapter 6). Push the caliper pistons evenly into the caliper halves. NOTE: Before remounting the brake caliper, push the brake caliper pistons all the way into the caliper.! Clean or replace attaching hardware. In the front trunk compartment, mark the location of the three nuts that hold the shock to the tower and then remove them (Figure 3). If it's stubborn and there's evidence of a caliper problem, such as dragging brakes or premature pad wear, a piston may be sticking in the bore. Each package contains two guide bushings, two caps, and an extra cap with a white retaining clip for another application. The grease is not only safe for use on rubber parts (won't cause them to swell over time, which would be bad for the caliper pins), but also lubricates well (very good for caliper pins). The most Be safe, use silicone grease on your o-rings and rubber seals in pressure washer wands, hoses and pumps. You should be able to switch back to the DOT 5 by flushing out and cleaning the old fluids from your lines and caliper. Even a few ounces of power steering fluid will lock up a brake system after a few miles. If the caliper shows signs of distress, the master cylinder should also be Use a brake parts cleaner to clean the caliper pistons and bores. In the process of reassembly of the rear suspension I replaced all of the rubber bushings for anti-roll bar and also took apart all of the various bearings to clear out old grease, inspect and repack or replace. Select one: a. Then start applying pressure back and forth to widen the gap while pushing the piston back into the caliper. It costs $10 for a small tube and is available at all auto parts stores. 18005606 - BUSHING KIT, caliper, all applications (one kit per car) 18027999 - ROTOR, ACDelco (ACD) Durastop 18A399 rubber, each consists of *parts below) *19174153 - HOSE, caliper hydraulic--hose only, rubber, fits both L/R calipers, ACD Durastop 18J1239 Torque to 74 lb/ft when installing these bolts at reassembly. Once the piston and cylinder bore are spotless, assembly can begin. Ive read that caliper paste is essentially just silicone. $8 a tube. That was specifically for using brake fluid. A few days later the kits showed up and it was confirmed, not only was the seal included in the kit, but it was also the correct seal for use on the 88 Fiero. Silicone lubricant is waterproofing and lubricating. NOTE: Before remounting the brake caliper, push the brake caliper pistons all the way into the caliper.! Fig. 4) Remove suspension arm and inspect bushing for damage.. The product states that it can be used on calipers and rubber parts in brake systems. Fig. While I had the rest of the suspension apart I figured I may as well replace the 20 year old rubber anti roll bar bushes with something a little better. Its just something Im considering here as I read that About the sticking of the seals. We combine shipping on multiple items- Please wait for a invoice before paying if you purchase multiple items. rubber heater hose from an auto parts store. If it's stubborn and there's evidence of a caliper problem, such as dragging brakes or premature pad wear, a piston may be sticking in the bore. Just a couple of bits to assemble before parts go back on the car. [2] Find a 78-79 Bronco or a 73-79 F150 (I used a 79 Bronco) and purchase everything from the $80 for blue & green G2 Caliper Paint kits (epoxy based). When a single part is damaged or needs maintenance, it can affect your braking in a number of ways. Causes of a Sticking brake caliper. Pull the pads, remove the calipers and drain the remaining fluid from each caliper into a jar. I have broken my units down to allow me to paint mine with G2 and then bake them in the oven @ about 150* for 30 min. The bleeder assemblies must be closed during this procedure. Lube the caliper bore and piston seal with a little brake fluid on your finger. Youll learn about common brake problems. Racy, cast-aluminum, dual-piston calipers replaced the cast-iron, single-piston units up front, and front and rear rotor dimeter increased One package is needed per caliper. Take off the wheel thats in front of the brake caliper youre replacing. The brakes still work fine and there are no leaks, but should I be considering pre-emptive servicing to prevent any problems on the road? Add new brake fluid to bring the level up to the MAX mark, if necessary, and replace the reservoir cap. Purchase some lighter 1/2 inch compression springs at a hardware store. 3 - Here's the freshly removed spindle.. After the stock caliper, rotor, and brake line are removed, the new parts are reinstalled. Note* The piston should retract smoothly. Not cleaning the brake slides and hardware: Just slapping new pads where the old pads once resided never works. Apply the pad paste to the rear of both pads: Finished product with the pins, spring, and new pad wear sensors installed! If you buy the overhaul rubber kit (all the rubber parts and a few other miscellaneous bits to do two calipers), the kit includes a little packet of the red grease. The jenny caliper is also known as the hermaphrodite or odd leg caliper is a unique instrument due to its features. One of its legs is bent and has a needle on its tip for scribing, while the other leg has a blunt tip and is straight. I had mine apart the other day and had that nub slide out of the groove also. The screwdriver can easily prick the rubber seals and cause brake fluid to leak. The grease is under extreme heat and pressure so 2. Bleed the braking system to rid it of all the air. So after 13 hard years in the Northeast, the rubber parts on the brake calipers are looking rather sorry. Post this place the pad clips and brake pads onto the caliper support unit. SERVICE MANUAL FIRST EDITION First Printing Compiled and Edited by Roy A. Hovey Apply hydraulic brake assembly lubricant to piston seals (8,9) and caliper pistons (3,4) to ease with reassembly and for protection. There are dozens of videos online about caliper rebuilding and reassembly, and theres a lot of disagreement between them on proper lubrication. Sometimes a good smack with a rubber hammer is needed. Figure B - Allen adjuster cover bolt below bracket. Disc brake systems use a caliper mounted near the dropouts of the frame or fork ends, and a rotor (disc) mounted to the hub. But a clutch assembly for heavy lawn and garden use consist of a heavy duty 3- or 6-pin drive plate, either high strength steel or stainless steel driveshaft, either a single aftermarket Push the wrench counterclockwise to open the valve (rubber tube optional). Parts that are sold as lots may or may have all parts. Purchase the tie-rod over conversion from BC Broncos. Use care during reassembly with the new o-rings and lubricate well. Bring your old lines to an auto parts store and buy new tubing of the same diameter and longer in length. Replace as needed. It is ideal for scribing lines parallel to the edge you are working on. The hose should fit snugly over the bleeder screw. The range for the 62 is 6.6 lbs to 13.2 lbs. The Nissan caliper rebuild kit for this one comes with a special packet of red grease, the FSM simply refers to this as rubber grease. It all depends on which caliper generates the most amount of force. Fig. Cut the tubes to the correct length after bending them to fit the car. I dont know all this stuff so just putting it here. 10. (Note: align the rear peg of the brake pad to the groove in the caliper piston.) Unhook the handbrake cable from the lever. The caliper pistons are an essential part of the brake system. I suppose rebuilding brakes and reassembly as quick as possible is always better. Drain the brake fluid out of the calipers and disassembly Remember, after the calipers have been rebuilt and reinstalled on the car, the system will have to be bled properly to purge all air from the lines and calipers. One thing to be aware of is that the hub carriers During disassembly, noticed the rear pads were nearly down to metal (hence the noise). If you notice smoking or an acrid burning smell coming from one wheel, you might want to check on the brakes. Rebuild the old calipers or put on a new set all around? Ensure utmost care during this part of the process. with a small tube of lube to put on the pistons during reassembly. Then place your air hose with a small nozzle chuck attached over the line fitting on the back of the caliper. Use some rope or wire to tie the brake caliper aside so that it doesn't hang by its rubber hose. 7 Brake drum out of round. '85 Euro 190E 2.3-16, '84 Euro 500SE, '90 300SEL, '51 Euro 170S, '15 G63 AMG. Reassembly. Jeff - I think you're correct about the rubber parts, but I plan to change all the rubber parts as part of the swap back. Place one end of a length of clear rubber hose over the bleeder screw on the new brake caliper. Youll also learn a little more about fixed, floating calipers and how they work. Plug the brake line using a brake hose plug. I11. Step 9 - Remount Rear Brake Caliper Reinstall the brake caliper, align brake pad hardware and reinstall caliper mounting bolts. Swapping out the fronts is almost as easy as a normal brake job since the caliper bolts to the same mounting flange as the original brakes. Just did this today on my 62. WARNING: Keep fingers clear during this step. Detach the brake hose from the caliper. Note: only 2 kits are necessary (1 for each rear caliper). Step 6: Cut the cable tie and fit the caliper into the position and tighten using the two 12 mm nuts provided in the kit. Using 40psi blow a small blast of air into the caliper through the brake fluid inlet located on the back of the caliper; this will extend the pistons. 11. Rusty Caliper Pistons & Piston Boot. 1. Do that step-by-step while reassembly the star adventurer (as shown in the video tutorial below). Install the new brake pads with supplied shims/anti-squeal compound, and mount the caliper on the car again. 10. Here's the general: $160 Set of four OE sized rotors w/ceramic pads. The outward movement of the caliper piston during brake application causes the piston seal to distort. I ordered 4 of them immediately. Drain fluid from calipers. When securing the new front hose to the front strut bracket, position the caliper end banjo fitting as shown in the photo below. With the caliper apart, check the neoprene seals and O-rings, and the bore of the cylinder. 4 - Be sure to replace the axle pivot bushings while everything's easily accessible. If that's the case, repairs should be made before the new pads are installed. Grease any slider pins/rails with brake grease during the reassembly. 7. Get a 1/2 inch I.D. But a brake caliper is not a wear part. brake pads continued. Inspect your calipers and pistons and determine what parts you need to order and once they have all come in it should take you about 5-6 hours to perform a repair only. 1 - The kingpin bushings are located in the spindle only.. Regarding rear caliper piston; I'm not finding the actual 38MM piston for this caliper, just the o ring kit. WARNING: Keep fingers clear during this step. Insert the new pistons together with the new seals. Use a wire brush or sand/bead blasting to remove rust from caliper brackets/guides to achieve a clean, smooth, uniform surface. With the brake line inlet port held over a container to catch fluid, press the pistons until they are retracted fully. 8. 1. In my experience, guide pins are life of the car parts. Not lubricating the guide pins: Caliper guide pins on floating calipers should be cleaned in solvent and new grease should be applied. Remove brake line fittings from the calipers. I initially wrote off the failure to old age/sitting unused/damage from the overheating event. Answer (1 of 13): Wear parts like the pads, etc. $20 jugs of muriatic & phosphoric acid. Bleed nipple and brake line port can be seen in this view. Doing just one is not doing the customer a favor. Two technicians are required for the following steps. 11) I removed the 6 bolts in the front of the hub that hold the rotor on. Biffta - I am switching back because it appears the DOT 5 fluid has caused the caliper piston seal to swell a little. Using 40psi blow a small blast of air into the caliper through the brake fluid inlet located on the back of the caliper; this will extend the pistons. Recommended caliper cleaning & lubrication procedure: 1 Use a wire brush or sand/bead blasting to remove rust from caliper brackets/guides to achieve a clean, smooth, uniform surface. 2 Clean or replace attaching hardware. 3 Lubricate metal-to-rubber friction points (guide pins to boots) with silicone lube (Wagner #F132005). More items Fixed calipers are fixed firmly to the brake carrier and the more common floating caliper is free to move laterally on its sliding pins. When a brake caliper gets stuck in a clamped position, it generates an excessive amount of heat. Caliper replacement is required if a caliper is leaking brake fluid, if a piston is sticking, or the caliper is worn or damaged. Have Technician #2 slowly press and release the brake pedal 3 times. During reassembly use the same rod, score it with a hacksaw about a 1/2" from one end. If its functioning, theres no need to replace it. This heat will melt the brake pads and heat up one wheel more than the others.
