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Speedometer Gear, M/T: All Technical Service Bulletins
Transmission - Leak from Speedometer Gear/Adaptor

Number:

87-138

Section:

7A

Date:

May, 1987

Subject:

FLUID LEAKS FROM THE PLASTIC SPEEDOMETER DRIVEN GEAR/ADAPTOR AREA

Model and Year:

ALL 1986 AND 1987 LIGHT DUTY TRUCKS WITH MANUAL OR AUTOMATIC

TRANSMISSIONS

Figure No. 1EXTENSION AND ASSOCIATED PARTS

BULLETIN COVERS:

Transmission fluid leak at the plastic speedometer driven gear (44, Figure No. 1) can be caused by a hole in the driven gear shaft. In some cases, this
condition could be misdiagnosed as a speedo driven gear fitting leak (43, Figure No. 1).

Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for Relay Module: > 87138 > May > 87 > Transmission - Leak from Speedometer Gear/Adaptor

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