How to properly bench bleed a Brake Master Cylinder before installation on GMC Jimmy?

A bench bleeding procedure of the Brake Master Cylinder removes air from the system thus shortening post-installation brake hydraulic bleeding times. Set up the master cylinder by connecting the outlet ports to mounting it onto a vise where the front section rests at a downward angle. Stroke the primary Piston several times using a round-end tool for 25 mm (1 inch) while filling the reservoir with clean brake fluid but recognize that the Piston will not extend its entire length during this process because air exits through the opening. After rearranging the master cylinder within the vise with the front positioned at a slight upward angle repeat the Piston movement process. Following vise positioning with the master cylinder at an even height you should open the outlet ports one by one while pushing the Piston through the bore to remove air. Use the smooth round-end tool to push the Piston home after plugging the outlets before releasing it back from the bore to keep air out. After finishing installation follow standard bleeding methods and finish by re-filling the reservoir with fresh brake fluid.

OEM GMC Jimmy Brake Master Cylinder

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6 Brake Master Cylinders found

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GMC Jimmy Master Cylinder
Part Number: 18026274
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-1999 GMC Jimmy | Envoy, SL, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
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GMC Jimmy Master Cylinder
Part Number: 19209269
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 18042802, 18060793
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2001 GMC Jimmy | Diamond Edition, Envoy, SL, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
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GMC Jimmy Master Cylinder
Part Number: 18029949
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 18022969
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1997 GMC Jimmy | Base, SL, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
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GMC Jimmy Overhaul Kit
Part Number: 18022970
Product Specifications
- Other Name: Cylinder Kit, Brake Master; Cylinder Kit, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1997 GMC Jimmy | Base, SL, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
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GMC Jimmy Master Cylinder
Part Number: 18013433
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 GMC Jimmy | Base, SL, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
View related parts
GMC Jimmy Overhaul Kit
Part Number: 18010083
Product Specifications
- Other Name: Cylinder Kit, Brake Master; Master Cylinder Repair Kit; Cylinder Kit, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 GMC Jimmy | Base, SL, SLE, SLS, SLT | 6 Cyl 4.3 L GAS

GMC Jimmy Brake Master Cylinder

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GMC Jimmy Brake Master Cylinder Parts Questions & Experts Answers

Master Cylinder
19209269
Q: How to properly bench bleed a Brake Master Cylinder before installation on GMC Jimmy?
A: A bench bleeding procedure of the Brake Master Cylinder removes air from the system thus shortening post-installation brake hydraulic bleeding times. Set up the master cylinder by connecting the outlet ports to mounting it onto a vise where the front section rests at a downward angle. Stroke the primary Piston several times using a round-end tool for 25 mm (1 inch) while filling the reservoir with clean brake fluid but recognize that the Piston will not extend its entire length during this process because air exits through the opening. After rearranging the master cylinder within the vise with the front positioned at a slight upward angle repeat the Piston movement process. Following vise positioning with the master cylinder at an even height you should open the outlet ports one by one while pushing the Piston through the bore to remove air. Use the smooth round-end tool to push the Piston home after plugging the outlets before releasing it back from the bore to keep air out. After finishing installation follow standard bleeding methods and finish by re-filling the reservoir with fresh brake fluid.