Fluid Passage Identification Changes

SUBJECT:

Fluid Passage Identification Changes
TRANSMISSION APPLICATIONS:

1987 THM 700-R4 (MD8)
TRANSMISSION MODELS:

All Models With Auxiliary Valve Body

Figure 9 - Valve Body Oil Passages:

CHANGE TO ASSEMBLY COMPONENTS:

Revised fluid passages in the following components:

^ Valve Body (Figure 9)

Figure 10 - Spacer Plate To Valve Body Gasket:

^ Spacer Plate to Valve Body Gasket (Figure 10)

Figure 11 - Typical Spacer Plate:

^ Spacer Plate (Figure 11)

Figure 12 - Spacer Plate To Case Gasket:

^ Spacer Plate to Case Gasket (Figure 12)

Figure 13 - Case Oil Passages:

^ Case Oil Passages (Figure 13)

Figure 14 - Pump To Case Oil Passages:

^ Pump to Case Oil Passages (Figure 14)

Figure 15 - Servo Oil Passages:

^ Servo Oil Passages (Figure 15)

Figure 16 - Pump Cover Oil Passages:

^ Pump Cover Oil Passages (Figure 16)

Figure 17 - Pump Body Oil Passages:

^ Pump Body Oil Passages (Figure 17)

Figure 18 - Hydraulic Schematic of "Park" Assembly:

^ Hydraulic Schematic of "Park" (Figure 18)
DATE OF CHANGE:

October 6, 1986, Julian Date 279, for all 1987 THM 700-R4 transmission models, All 1987 Service Replacement Transmission Assemblies (SRTA) models have the new auxiliary valve body assembly.


SERVICE ACTION:

Use illustrations provided in this bulletin for identifying/diagnosing a 1987 THM 700-R4 transmission that has an auxiliary valve body.

Use 1987 Service Manuals printed prior to November, 1986 for identifying/diagnosing a 1987 THM 700-R4 transmission without an auxiliary valve body.