# Service bulletin GRP4/9310

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 39626
- Published by NHTSA: 1995\-11\-01
- Manufacturer's number: GRP4/9310
- Manufacturer's date: 1993\-08\-01
- NHTSA component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS

## NHTSA's summary

BRAKE VIBRATION DAMPER APPLICATION \- NEW DAMPING PLATE WITH STEEL CLIP. \*TW

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Brakes

## Vehicles listed

- 1989 to 1993 PORSCHE 911
- 1988 PORSCHE 928
- 1989 to 1993 PORSCHE 928
- 1987 to 1991 PORSCHE 944
- 1992 to 1993 PORSCHE 944
- 1992 to 1993 PORSCHE 968

## Recalls for the same vehicles and component

- [1994005](/recalls/tc/1994005.md), 1994-01-13: Brakes
- [93V205000](/recalls/nhtsa/93V205000.md), 1993-12-07: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM:HOSES, LINES/PIPING, AND FITTINGS

## Other bulletins for the same vehicles and component

- [No. 1801.4](/bulletins/10209901.md), 2022-04-05, Service bulletin: SERVICE BRAKES. Advanced technical information for a brake squeal.
- [ATIALL41605](/bulletins/10198525.md), 2021-06-28, Service bulletin: EQUIPMENT; SERVICE BRAKES. Understanding and addressing brake squeal complaints.
- [122\-L5E2R\-04](/bulletins/10134862.md), 2018-04-23, Service bulletin: SERVICE BRAKES, HYDRAULIC. Subject: Replacing brake booster during repairs Information: If the brake booster on the 911 Carrera 2/Targa/Speedster \(964\) needs to be replaced, the replacment brake booster will be a 911 \(993\) version. During conversion, the brake master cylinder, mounting saddle and \(push rod\) joint screw must be replaced \(? Figure 1\). The power steering pressure and return linesmay also have to be replaced.

JSON: [/v1/bulletins/39626](/v1/bulletins/39626)

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