A/T - Service Manual Procedure Update.: Overview
Bulletin 87-7-3Date
Oct. '86
Ref. No. 87-003-7
SUBJECT: 1987 SERVICE MANUAL PROCEDURE UPDATE. ALL THM TRANSMISSIONS/TRANSAXLES OIL COOLER FLUSHING PROCEDURE
MODELS AFFECTED: ALL MODELS
NOTE: This bulletin supersedes all transmission oil cooler flushing information published prior to this date.
FIGURE 1 - COOLER FLUSHING TOOLS:
Transmission oil cooler flushing must be performed whenever a transmission/transaxle is removed for service. It is essential to flush the oil cooler after SRTA installation, major overhaul, if fluid contamination is suspected, or in any case of pump or torque converter replacement. A new, essential cooler flushing tool, Kent-Moore Number J35944 (Refer to Figure 1), has been developed to properly flush the oil cooler and will be shipped to GM dealers by December, 1986. Time allowance for performing the cooler flushing procedure will be included in specific 1987 Labor Time Guide operations. When using 1986, and prior, Labor Time Guides, add 0.6 hours for cooler flushing to the recondition or SRTA replacement time allowances.
To ensure complete transmission/transaxle system service, it is recommended that the flush procedure be performed after the overhauled or replacement assembly has been reinstalled in the vehicle.
The service procedure steps for oil cooler flushing are as follows:
EQUIPMENT AND MATERIALS NEEDED
Kent-Moore Cooler Flusher Tool, J35944 and biodegradable flushing solution* Measuring Cup (supplied with tool) Funnel Water Supply (hot water recommended in all cases, if available) Water Hose (at least 5/8 inch diameter) Air Supply (with water and oil filter) Air Chuck (with clip if available) Air Pressure Gage Oil Drain Container Five Gallon Pail (or larger, with lid) Eye Protection Rubber Gloves
* Solution available by the gallon, J35944-20, or six-gallon case J35944-CSE.