A/T - Service Manual Update On New Pump Assemblies

Number 85-7-30 7/85

Subject: SERVICE MANUAL UPDATE ON NEW PUMP ASSEMBLIES

1985 THM 700-R4 YA, YC, YZ MODELS

FIGURE 1 - THM 700-R4 TRANSMISSION I.D. LOCATION TOLEDO, OHIO:

Beginning on March 4, 1985, or Julian Date 064, (refer to Figure 1) a new pump assembly went into production for 1985 THM 700-R4 "YA", "YC" and "YZ" model transmissions.

FIGURE 2 - PUMP ASSEMBLY EXPLODE:

This new pump assembly uses an inner slide spring and an outer slide spring (refer to items 243 and 209 of Figure 2) or nested slide springs, that lowers the wide open throttle 3-4 upshift.

To update pump assemblies used in 1985 THM 700-R4 "YA", "YC" or "YZ" model transmissions built prior to Julian Date 064, the following springs may be ordered from W.D.D.G.M..:

8639562 - Inner Pump Slide Spring
8639563 - Outer Pump Slide Spring

Use procedures contained in the appropriate Service Information Manual and the illustration provided in Figure 2.

ILL.
NO. DESCRIPTION

002 SEAL ASSEMBLY, OIL
003 BUSHING, PUMP BODY
203 BODY, PUMP
204 RING, OIL SEAL (SLIDE TO
WEAR PLATE)
205 SEAL, "O" RING (SLIDE SEAL
BACK-UP)
206 SLIDE, PUMP
207 SPRING, PIVOT PIN
208 PIN, PIVOT SLIDE
209 SPRING, PUMP SLIDE (OUTER)
210 SUPPORT, PUMP SLIDE SEAL
211 SEAL, PUMP SLIDE
212 RING, PUMP VANE
213 GUIDE, ROTOR
214 ROTOR, OIL PUMP
215 VANE, PUMP
216 SHAFT, STATOR
217 COVER, PUMP
218 VALVE, PRESSURE REGULATOR
219 SPRING, PRESSURE REGULATOR
VALVE
220 VALVE, REVERSE BOOST
221 SLEEVE, REVERSE BOOST VALVE
222 VALVE, T.V. BOOST
223 BUSHING, T.V. BOOST
224 RING, OIL PUMP REVERSE BOOST
VALVE RETAINING
225 RING, OIL PUMP CONVERTER CLUTCH
VALVE RETAINING
226 VALVE, STOP
227 VALVE, CONVERTER CLUTCH
228 SPRING, CONVERTER CLUTCH
VALVE (OUTER)
229 SPRING, CONVERTER CLUTCH
VALVE (INNER)
230 RIVET, PRESSURE RELIEF BOLT
231 BALL, PRESSURE RELIEF
232 SPRING, PRESSURE RELIEF
233 RING, OIL SEAL (STATOR SHAFT)
235 PLUG, .5 O.D.
236 BOLT, M8 X 1.25 X 40 (COVER
TO BODY)
237 PLUG, OIL PUMP AIR BLEED
238 PLUG, OIL PUMP COVER
239 PLUG, OIL PUMP COOLER FEED
240 PLUG, OIL PUMP CONVERTER
CLUTCH SIGNAL
241 RETAINER & BALL ASSEMBLY,
PUMP COVER
242 SCREW, STATOR SHAFT (M6 X
1 X 16.0)
243 SPRING, PUMP SLIDE (INNER)
(YA, YC, YZ MODELS)