Brake Master Cylinder For CHEVROLET / CADILLAC / GMC AIBHI 18040252 / 18048538 / 18060789 / 19209249 DIA 34mm

DIA:34mm
Mounting Size:Φ46/86.5/2-Φ12→Φ11
Connetcing Size:2-1/2-20UNF

OEM:

18040252
18048538
18060789
19209249
DORMAN : M630031

Model:

2002 Cadillac Escalade
2002 Cadillac Escalade EXT
2002 Chevrolet Avalanche 1500
2000-2002 Chevrolet Blazer
1999-2002 Chevrolet Silverado 1500
2001-2002 Chevrolet Silverado 1500 HD
2000-2002 Chevrolet Suburban 1500
2000-2002 Chevrolet Tahoe

1999-2002 GMC Sierra 1500
2001-2002 GMC Sierra 1500 HD
2000-2002 GMC Yukon
2000-2002 GMC Yukon XL 1500
2001-2002 GMC Yukon XL 2500

REMOVING THE ORIGINAL MASTER CYLINDER

NOTE: Before beginning work，be sure vehicle is parked in a level area and that wheels are chocked to prevent unintentional movement.The master cylinder must be level during the procedure.

1.Disconnect the ground cable from the battery.

2.On manual brake master cylinders（except some Chrysler products），disconnect the push rod from the brake pedal linkage under the dash.The rod eyelet is attached to the pedal with a thru-bolt and cotter pin，nut or retaining clip。

NOTE：Some chrysler vehicles use manual brake master cylinders with a “pop out”pushrod. After removing the flange bolts，support the master cylinder and use a wedge between the flange and firewall to “pop”the pushrod from the piston.Do not separate the pushrod from the brake pedal linkage(see illustration).

3.Disconnect electrical leads from master cylinder's brake failure warning switch,if so equipped.

4.Clean the area around the brake line commections on the master cylinder.

5.Disconnect brake lines from the master cylinder and proportioning valve,if so equipped. Cover or plug lines to prevent dirt from entering and contaminating the brake system.

CAUTION: Do not allow brake fluid to contact painted surfaces as the fluid damages paint. If contact occurs,immediately flood the affected area with water.

6.Remove the nuts/bolts securing the master cylinder to the firewall or power brake booster.Do not remove power brake booster.

7.Remove the master cylinder from the vehicle.CAREFULLY remove and save any fittings,rubber hoses , clamps , plastic , gaskets or other components (including brake warning switches and proportioning valves) for installation on the replacement unit if necessary.

NOTE: If the replacement master cylinder is supplied without a reservoir,you must remove and transfer the reservoir from the original master cylinder to the replacement unit.Refer to the following instructions.

TRANSFERRING THE RESERVOIR

1.Carefully drain remaining brake fluid from the master cylinder.

2.Position the original master cylinder in a vise so the jaws clamp onto the mounting flange. Do not tighten the vise jaws on the master cylinder body! This will cause damage and void the unit's core value.

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Product Categories : Brake Master Cylinder