I took the caliper out and the piston was all the way out, i noticed it's bolted on but I can screw it back on; do i go counter or clock wise, is do I have to pressure it ehile I do this?, can you please help
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Re: rear brake caliper on volkswagen jetta year 200
You go clockwise to screw it back on, but you have to make sure it is lined up all exactly right. You do not want to cross thread the bolt. I am assuming you pushed the cylinder all the back in the caliper when you put new pads on. You should be able to start the bolts by hand and then ratchet them down.
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For front brake pads replacement you need only usually wrench set, inclusive 7 mm allen key also. But for rear brake pads replacement you need obligatory a special caliper piston pressing tool, in order to press back rear caliper piston with parking brake automatic adjustment!!! For front brake pads. You should buy the brake pads (with wear sensor). For change front brake pads you must raise vehicle, remove wheels, extract the retaining spring of the caliper, and remove the caliper as follow: 1. Do not disconnect the brake hose from the caliper, and do not allow the caliper to hang by the brake hose! 2. Remove top and bottom caps (on back side of the caliper) for access to guide pins, then unbolt and remove them from the brake carrier. Remove the caliper. 3. Now you must thoroughly clean the brake calipers (free of grease). 4. Remove outer brake pad from brake carrier. 5. Pull inner brake pad out of brake caliper piston. 6. Check up the brake fluid level on the reservor, and emptying if neccessary! 7. Push piston back into brake caliper housing. 8. Install inner brake pad (with expanding spring) in brake caliper piston. (Arrow marked on pad - if exist, must point in direction of brake disc rotation when vehicle is moving forward). 9. Install outer brake pad into brake carrier. 10. Bolt brake caliper housing to brake carrier using two guide pins. Tightening torque is 25 Nm. 11. Install both caps. 12. Insert retaining spring into brake caliper housing. Important: Depress the brake pedal firmly several times while the car is stationary so that the brake pads adjust to their normal operating positions!!! Check brake fluid level and top up if neccessary!!!
If you look at the piston on the Caliper it has 2 grooves on the face where the Brake pad mates to it. There is a special tool to push and turn the piston back into the caliper bore. that type caliper is also used to apply the parking brake. cable attached to rear of caliper and to an arm with a heavy spring. If you go to Harbor freight they have an inexpensive set for this.
I had the exact problem today on my in-laws 06 jetta. Come to find out - this model has an electrical parking brake in the rear. The piston will not go in manually like other disc brakes. You must disconnect the electrical wire in the back and run a jumper to the connection from a power source like the battery and the piston will go in.
When I changed my sisters VW Jetta I used the follow:
Socket to fit the caliper bolts (can't remember size)
C-Clamp to push the piston back in
Bucket to set the caliper on while changing the pads
On the rear brakes I had to borrow the special tool to push in rear disc brakes from AutoZone, this tool spins the piston while pushing it back in. Let me know if you have any other questions. Thanks for an honest rating and thanks for using FixYa!
If you can't see diagrams(sometimes happens) let me know and I will get them to you
Raise and support the vehicle. Remove the rear wheels.
If equipped, disconnect the brake pad wear sensor from the harness.
Counterhold the lower sliding pin using a thin open-end wrench and remove the caliper-to-sliding pin hex bolt.
Pivot the caliper upward or if necessary remove the upper caliper-to-sliding pin hex bolt.
a brake caliper retraction tool, select the appropriate sized piston
press arbor and install the tool onto the brake caliper. Following the
tool manufacturer's recommendations, use the tool to rotate the caliper
piston clockwise as it is pressed into the brake caliper housing, until
it is fully retracted.
Use a thin open-end wrench to . . .. . . support the caliper sliding pin when removing the caliper mounting boltUse a disc brake caliper piston retracting tool that will rotate the caliper piston as it is pressed into the caliperThe rear caliper piston is slotted to allow a retracting tool to rotate the piston when replacing the brake padsTo install:
the brake caliper and all sliding surfaces. With the caliper piston
pressed fully back into the caliper housing, check for leaking fluid
and damaged dust boots.
If equipped, install a new brake pad
wear sensor in the pad if the plastic part has been worn through on the
old sensor. New sensors are not required unless the wire inside the
plastic part has been exposed.
Lubricate the slider bolts with approved brake grease.
the brake pads onto the bracket assembly, and then carefully lower the
caliper over the caliper mount. Check and make sure that the pad
springs are correctly seated.
Replace all removed caliper-to-sliding pin bolts and torque to:
1990-97 Passat models: 25 ft. lbs. (35 Nm)
1998-00 Passat models: 22 ft. lbs. (30 Nm)
equipped, connect the brake wear sensor wire to the harness. Check for
a good connection as most problems with the sensor circuit are caused
by faulty connections. Check that the wire is held by the loop in the
dust cover and the connector is held at the clips.
wheels and hand tighten the lug bolts. Lower the vehicle carefully
until the tires begin to contact the surface and torque the lug bolts
to specification in a crisscross pattern to:
You probably have a screw-in caliper piston design like my 99 A4 has. You need a tool that is made for screwing the calipers in - AutoZone has them as part of their tool loan program. Look at the face of the piston - if you see two indents or notches across from each other on the face, then you have screw-in pistons and need the kit to do them.