Workshop

HYDRA – MATIC 4L40 – E / 5L40 – E

AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
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Copyright © 2002 ATSG
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FRONT VALVE BODY ASSEMBLY EXPLODED VIEW
COMPONENT REBUILD
VALVE BODY ASSEMBLY
340 FRONT VALVE BODY CASTING ASSEMBLY
341 SAFETY MODE VALVE
342 SAFETY MODE VALVE SPRING
343 VALVE SPRING RETAINER
344 3-4 SHIFT VALVE SPRING
345 3-4 SHIFT VALVE
346 3-4 SHIFT CONTROL VALVE
347 TCC REGULATOR APPLY VALVE SPRING
348 TCC REGULATOR APPLY VALVE
349 SOLENOID ASSEMBLY SMALL "O" RING SEAL
350 SOLENOID ASSEMBLY LARGE "O" RING SEAL
351 SOLENOID ASSEMBLY RETAINER
352 TCC/PWM SOLENOID ASSEMBLY
353 FEED LIMIT VALVE
354 FEED LIMIT VALVE SPRING
355 PRESSURE CONTROL SOLENOID SMALL "O" RING SEAL
356 PRESSURE CONTROL SOLENOID L ARGE "O" RING SEAL
357 PRESSURE CONTROL SOLENOID ASSEMBLY
Figure 164
1. Dis-assemble complete valve body assembly
using Figure 163 as a guide.
2. Remove and discard both valve body gaskets.
Refer to Figure 163.
3. Clean all valve body parts thoroughly and dry
with compressed air.
4. Inspect all valve body parts thoroughly for any
wear and/or damage.
5. Dis-assemble the front valve body assembly
using Figure 164 as a guide.
6. Lay each valve line-up out in order as you
remove them from the valve body casting.
7. Inspect each valve, valve spring, bore plug
and retainers for any wear and/or damage.
8. Clean all front valve body parts thoroughly
and dry with compressed air.
9. Install each valve train back into their bores
exactly as shown in Figure 164, lubricating
them with Dexron III® as they are installed.
10. Install new "O" ring seals on the TCC/PWM
Solenoid and the Pressure Control Solenoid
as they are installed (See Figure 164).
11. Extra care here will eliminate some of the
troublesome problems encountered later.
12. Dis-assemble the rear valve body assembly
using Figure 165 as a guide.
13. Lay each valve line-up out in order as you
remove them from the valve body casting.
14. Inspect each valve, valve spring, bore plug
and retainers for any wear and/or damage.

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