Removal off fromt brakes and rotos on 4x4

Brake Disc (Rotor)
Removal & Installation
Front
To Remove:

Remove the cover on the master cylinder and siphon enough fluid out of the reservoirs to bring the level to 1/3 full. This step prevents spilling fluid when the piston is pushed back.

Raise and safely support the vehicle.

Remove the front wheels and tires.

Position a C-clamp around the outside pad and caliper; tighten the C-clamp until the caliper piston bottoms in its bore.


Place an index mark on the rotor and hub for reassembly.

Remove the 2 brake caliper bracket mounting bolts.

Remove the brake caliper and brake caliper mounting bracket as a complete assembly. Support the caliper and bracket assembly with a heavy wire.

Remove the brake rotor screw on 1500 series vehicles.

On 25/3500 series vehicles the rotor may be difficult to remove because of corrosion or rust around the hub area. Use the following procedure to remove the rotor.



Clean surface areas and the threaded holes.

Apply penetrating oil to the hub/rotor area.

Install two M10 x 1.5 bolts into the threaded holes of the rotor.

Tighten the bolts evenly to force the rotor off the hub.


Remove the rotor.

To Install:




Clean the mating surfaces of the hub flange and rotor.

If applicable align the index marks on the rotor and hub. Install the rotor.

Install the caliper and mounting bracket assembly.

Perform the following procedure before installing the caliper bracket mounting bolts.



Remove all traces of the original adhesive patch.

Clean the threads of the bolt with brake parts cleaner or the equivalent and allow to dry.

Apply threadlocker GM P/N 12345493 or equivalent to the threads of the bolt.


Install the caliper bracket mounting bolts.



Tighten to 121 ft lbs (175 Nm) (15 series) and 221 ft lbs (300 Nm) (25 series).


Install the tire and wheel assembly.

Lower the vehicle.

Seat the brake caliper pistons and brake pads by slowly pumping the brake pedal.

Fill the master cylinder reservoir to the proper level.
Brake Disc (Rotor) Removal & Installation Front To Remove:

Remove the cover on the master cylinder and siphon enough fluid out of the reservoirs to bring the level to 1/3 full. This step prevents spilling fluid when the piston is pushed back.
Raise and safely support the vehicle.
Remove the front wheels and tires.
Position a C-clamp around the outside pad and caliper; tighten the C-clamp until the caliper piston bottoms in its bore.
Place an index mark on the rotor and hub for reassembly.
Remove the 2 brake caliper bracket mounting bolts.
Remove the brake caliper and brake caliper mounting bracket as a complete assembly. Support the caliper and bracket assembly with a heavy wire.
Remove the brake rotor screw on 1500 series vehicles.
On 25/3500 series vehicles the rotor may be difficult to remove because of corrosion or rust around the hub area. Use the following procedure to remove the rotor.
Clean surface areas and the threaded holes.
Apply penetrating oil to the hub/rotor area.
Install two M10 x 1.5 bolts into the threaded holes of the rotor.
Tighten the bolts evenly to force the rotor off the hub.
Remove the rotor.
To Install:

Clean the mating surfaces of the hub flange and rotor.
If applicable align the index marks on the rotor and hub. Install the rotor.
Install the caliper and mounting bracket assembly.
Perform the following procedure before installing the caliper bracket mounting bolts.
Remove all traces of the original adhesive patch.
Clean the threads of the bolt with brake parts cleaner or the equivalent and allow to dry.
Apply threadlocker GM P/N 12345493 or equivalent to the threads of the bolt.
Install the caliper bracket mounting bolts.
Tighten to 121 ft lbs (175 Nm) (15 series) and 221 ft lbs (300 Nm) (25 series).
Install the tire and wheel assembly.
Lower the vehicle.
Seat the brake caliper pistons and brake pads by slowly pumping the brake pedal.
Fill the master cylinder reservoir to the proper level.