HI and thanks for using 2CarPros.
It sounds like an issue with one of the rubber brake hoses to the caliper. I need you to try this for me and let me know what happens.
First, safely lift the front wheels off the ground so you can turn them. Apply the brakes so the caliper locks. Open the bleeder on the brake caliper. Does the caliper release?
If so, do this. Apply the brakes to lock caliper. Release pressure at the master cylinder. If it doesn't release the caliper, replace the rubber brake hoses.
Here are the directions specific to your vehicle for brake hose replacement. The attached pictures correlate with these directions
Front brake hose
Removal:
Warning: brake fluid contains polyglycol ethers and polyglycols. Avoid contact with eyes. Wash hands thoroughly after handling. If brake fluid contacts eyes, flush eyes with running water for 15 minutes. Get medical attention if irritation persists. If taken internally, drink water and induce vomiting. Get medical attention immediately.
- Raise and support the vehicle.
Warning: the electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle, this can be accomplished by turning off the air suspension switch located in the right hand kick panel area. Failure to do so may result in unexpected inflation ()r deflation of the air springs which may result in shifting of the vehicle during these operations.
Disconnect Front Brake Hose
see picture 1
- Disconnect the front brake hose.
1 Remove the front brake hose bolt.
2 Remove and discard the copper washers. Plug the front brake hose.
3 Disconnect the front brake hose.
Remove Front Brake Hose
see picture 2
- Remove the front brake hose.
1 Disconnect the front brake tube fitting and plug the tube.
2 Remove the plug;
3 Remove the two brake hose frame bolts.
4 Remove the front brake hose.
INSTALLATION:
Front Brake Hose Torque Specifications
see picture 3
Front Brake Hose Torque Specifications
see picture 4
- To install, reverse the removal procedure.
Bleed the front brakes; refer to procedure in this section section.
Let me know what you find.
________________________________________________
Also, since both the booster and master cylinder were replaced, you really should check the push rod adjustment between the two. Here are the directions for adjustment, Pic 5 correlates with this process.
Remove the brake master cylinder: refer to the Master Cylinder, Brakes.
Power Brake Booster To Master Cylinder Push Rod Torque Specification
see picture 5
-Adjust the power brake booster to brake master cylinder push rod.
1 Measure the power brake booster to brake master cylinder push rod.
2 If necessary, adjust the screw to the proper length.
Let me know what you find or if you have other questions.
Take care,
Joe
Images (Click to enlarge)
Thursday, September 24th, 2020 AT 11:46 AM
(Merged)