Master Cylinder: Reassembly
Reassemble piston assemblies using a thin coating of ATE brake cylinder paste (or equivalent). Install piston assemblies into cylinder bore using a suitable guide sleeve (BMW 6063) to prevent damaging seals. Install secondary piston stop screw, making sure that piston is pushed fully forward before screw is installed and tightened. Install retaining ring in end of master cylinder bore.
TIGHTENING SPECIFICATIONS
| Application |
Ft. Lbs. (mkg) |
| Caliper-to-Kingpin Pivot |
69 (9.5) |
| Brake Disc-to-Wheel Hub |
43-48 (6-6.7) |
| Brake Hose-to-Caliper |
9-12 (1.3-1.6) |
| Pre-Pressure Valve |
14 (1.9) |
| Wheel Nuts |
65 (9) |
| Collar Nut on Brake Line |
9-12 (1.3-1.6) |
| Caliper Halves |
25 (3.4) |
| Castle Nut-to-Drive Flange |
217-271 (30-37.5) |
| Master Cylinder-to-Brake Servo |
9-11 (1.2-1.5) |
| Brake Reverse Motion |
| |
Lever At Pivot Mounting |
33-37 (4.9-5.4) |
| Brake Mounting-to-Trailing |
| |
Arm (With Loctite) |
43-47 (6-6.7) |
BRAKE DRUM SPECIFICATIONS
| Application |
Drum Diameter In. (mm) |
Original Diameter In. (mm) |
Maximum Refinish Diameter In. (mm) |
Discard Diameter In. (mm) |
| 1600 & 1600-2 |
7.87 (200.0) |
7.87 (200.0) |
7.91 (201.0) |
|
| All Others |
9.84 (250.0) |
9.84 (250.0) |
9.88 (251.0) |
|
BRAKE SYSTEM SPECIFICATIONS
| Application |
Drum Diam. In. (mm) |
Wheel Cylinder Diameter |
Master Cylinder |
| Front In. (mm) |
Rear In. (mm) |
Diameter In. (mm) |
| 1600 & 1600-2 |
7.87 |
1.34 |
.687 |
.812 |
| (200.0) |
(34.0) |
(17.46) |
(20.64) |
| 2002 Ti & Tii |
9.84 |
1.57 |
.687 |
.937 |
| (250.0) |
(40.0) |
(17.46) |
(23.81) |
| All Others |
9.05 |
1.34 |
.687 |
.812 |
| (230.0) |
(34.0) |
(17.46) |
(20.64) |