A/T Accumulator - Revised Product Information
Bulletin: 93-74L60-1Date: Oct., '92
Ref.No.: 93-22-74L60
Corp.Ref.No.: 277140
SUBJECT:
SERVICE MANUAL UPDATE - SECTION 7 - 1993 HYDRA-MATIC 4L60 TRANSMISSION UNIT REPAIR - ACCUMULATOR ASSEMBLY
MODELS AFFECTED:
1993 ROADMASTER
BULLETIN COVERS:
New Product Information for 1993 HYDRA-MATIC 4L60 transmissions. This information has been updated since publication of the 1993 Service Manual and should be noted accordingly. Be certain to familiarize yourself with these updates to properly repair the 1993 HYDRA-MATIC 4L60 transmission.
DATE OF PRODUCTION CHANGE: (Figure 10)
Beginning with Start of Production 1993, HYDRA-MATIC 4L60 transmissions were built with a new calibration that eliminates the 3-4 accumulator spring (Item 54) and inverts the 1-2 accumulator spring (Item 59) with the 1-2 accumulator piston (Item 61).
SERVICE MANUAL REFERENCE:
Update your 1993 Service Manual Section 7A-15B Transmission Unit Repair with the New Product Information.
Exploded View Case and External Parts