A/T - Pump Noise
Number 87-7-41 Date 9/87TRANSMISSION PUMP NOISE - SERVICE AND PARTS
Subject: INFORMATION ON A NEW TRANSMISSION FLUID FILTER AND FILTER SEAL
1987 PARISIENNE AND FIREBIRD MODELS EQUIPPED WITH THM 700-R4
BULLETIN COVERS:
A new design THM 700-R4 transmission fluid filter and filter seal, that eliminates the potential for transmission noise caused by air suction through the transmission filter.. The new design transmission filter is a wider filter that has a felt element in place of the screen element and has a shorter filter neck. The filter has a molded body that locates over the valve body bolts, thus eliminating the need for the filter retainer clip (87). The new design filter seal (70) is a wider compression type seal that fits snug in its bore.
Figure 1 - THM 700-R4 Transmission Identification Information:
DATE OF PRODUCTION CHANGE: (Figure 1)
Beginning July 8, 1987 (Julian date 187) all 1987 THM 700-R4 transmissions were produced with the new design transmission filter (71) and filter seal (70).
Figure 2 - Oil Filter Assembly:
SERVICE ACTION: (Figure 2)
When servicing any 1982 through 1987 THM 700-R4 transmission, and the transmission filter needs replacement, this new design transmission filter and filter seal should be installed. The filter retaining clip
(87) is not needed with the new design filter, and should be discarded.
NOTICE: Care should be taken when installing the new design filter and filter seal. The filter seal is a compression type seal and will fit snug in its bore. Damage to the filter neck could result if the filter is installed incorrectly.
To correctly install the filter and seal, place the seal over the filter neck. Insert the filter into its bore in the pump assembly. With the palm of your hand gently push downward on the filter until it seats.
SERVICE PARTS INFORMATION:
Part No. Description
8657926 Package - Filter, Filter Seal and Gasket
8657767 Seal - Filter Neck (Available separately)