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E4OD Transmission
Updates: 1989 - 1998
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Case Related Updates:
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| 1989 - Early 1990: Original Design - Converter anti-drainback vale located in cooler line. |
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Late 1990-1998: Converter anti-drainback valve in rear line tap @ case.
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| 1991 Addition of an Intermediate Accumulator regulator filter. |
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(small screen with spring on it located in worm track near OD fluid feed bolt)
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| 1989 Diesel Case 14 checkballs (1st Design) |
| 1990 - 1996 Diesel Case 9 checkballs. |
| 1996 -1998 Diesel Case 8 checkballs. |
| 1989 Gas Case 14 checkballs (1st Design) |
| 1990 - 1996 Gas Case - 5" top bolt center line with 9 check balls |
| 1996 - 1998 Gas Case - 5" top bolt center line with 8 check balls |
| 1996 - 1998 Gas Case - 7-3/4" top bolt center line with 8 check balls |
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1990 - 1996 Gas Case - 7-3/4" top bolt center line with 9 check balls
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Note: Top bolt center line is distance between top bolt holes .
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1996 Major Updates:
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| 1989-1993 Input shaft 14" (Original design no groove mark on outer small spline end). |
| 1993 - 1998 Input shaft 13.5" (2nd Design, Has 1/8" wide groove mark on outer small spline end). |
| 1994 - 1998 Center Support hub was updated to use a roller bearing |
| 1996 Center Shaft / OD Ring Gear (pilot removed from end of center shaft). |
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1996 - 1998 Forward Hub to Forward Drum updated to Bearing.
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1989-98 / 1998 Coast Clutch
Lip Seal / Molded Seal:
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| 1989-1998 Replaceable inner & outer lip seals. (1st Design) |
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1998 Seals molded to piston (2nd Design)
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| NOTE: Molded seal design requires piston / seal replacement. |
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NOTE: These two pistons to seal types are not interchangeable.
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1989-94 / 1995-98
Direct Drum Updates:
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| 1989-1994 Direct Drum with 1 apply hole to piston |
| 1995-1998 Direct Drum with 2 apply hole to piston |
| NOTE: Direct Drums are fitted for either 3, 4 or 5 friction disc. |
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NOTE: Two hole apply piston and one hole are NOT interchangeable.
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Forward Planet Updates:
3 & 4 Pinion / 6 Pinion Steel
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| 1989 - 1998 3 pinion aluminum (Light Duty Applications) |
| 1989 - 1994 4 pinion aluminum |
| 1995 - 1998 4 pinion steel |
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1998 6 pinion steel
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Overdrive Planet Updates:
4 Pinion / 6 Pinion Steel
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| 1989 - 1998 3 pinion aluminum (Light Duty Applications) |
| 1989 - 1994 4 pinion aluminum |
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1995 - 1998 4 pinion steel
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Output Shaft Updates:
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| 1989 - 1998 2WD 7 teeth speedometer gear with snap ring. (3 ID grooves just behind gear) |
| 1995 - 1998 2WD 8 teeth speedometer gear no snap ring (no ID grooves) |
| 1989 - 1998 2WD long style without speedometer gear. |
| 1989 - 1998 4WD early style with snap ring (short style) |
| 1989 - 1998 4WD 14" long without snap ring |
| 1989 - 1994 Retro fit Orifice Plug 0.040" (installed inner end of output shaft). |
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1995 Orifice was incorporated in to output shaft inner end
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Overdrive Piston:
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| 1989 - 1995 Lip Seal Type |
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1996 - 1998 Molded Seal on piston
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Note: Above pistons are not interchangeable.
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1995 Manual Lever
Position Sensor
Connector Updates (MLPS):
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| 1989-1996 Old style MLPS connector. |
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1997-1998 Updated MLPS connector.
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Note: Both style MLPS work 1989 - 1998 with matching connector.
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1989-94 / 1995 / 1998
Pump Updates:
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| 1989 - 1994 (10 lobe - 1st Design). |
| 1995 Pump (9 lobe - 2nd Design, gears updated for more volume. |
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1998 Pump & TCC Solenoid update for Diesel Applications.
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1989-96 / 1997-98
Reverse Hub &
Roller Race Updates:
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| 1989 - 1996 Cast Iron Reverse Hub |
| 1989 - 1996 Low Inner Race (original design for Cast Iron Hub) |
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1997 -1998 Stamped Steel Reverse Hub with New Inner Race size.
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NOTE: Above Reverse Hubs and Inner Races are not interchangeable.
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1989-96 / 1997-98
Low / Reverse Piston:
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| 1989 - 1995 18 spring notches / Square cut inner and outer piston seals. |
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1996 - 1998 23 spring notches / Lip Seal inner and outer piston seals.
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| Note: Above pistons are not interchangeable. |
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Note: Above pistons must have correct return spring assembly.
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1989 / 1990 / 1991-1998
Torque Converter
Anti-drain back valves.
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| 1989 In cooler line 5/16" Cooler Line Union. |
| 1990 At rear cooler line tap 5/16" fitting. F0TZ-7D174-B |
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1991-1998 At rear cooler line tap 3/8" fitting. F0TZ-7D174-C
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Servo, (Coast Clutch
Manual 2nd Band Apply)
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| 2nd Design One-Piece Band Apply Servo. |
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Original Servo securing Snap Ring and Retaining plate are not used with update Band Apply Servo
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1989-93 / 1994-97 / 1998
Overdrive Sprag
Roller Clutch Updates:
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1989 -1993 Overdrive Input Sprag (1st Design, 34 element).
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1994 - 1997 Overdrive Roller Clutch, white plastic cage with 12 rollers.
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1998 Overdrive Roller Clutch, black plastic cage with 12 rollers.
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1989-1998 Valve Body
Case Worm Track
Checkball Updates:
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1989-1998 - (1) 1/4" steel EPC relief ball & spring below Solenoid valve body and separator plate. E9TZ-7D017-A
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| Early 1989 - (14) worm and (2) main valve body 5/16" rubber checkballs E7DZ-7E195A |
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| Late 1989 - (10) worm and (2) main valve body 5/16" rubber checkballs; E7DZ-7E195A |
| and (1) worm 5/16" steel checkball. E7DZ-7E195A |
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| 1990-1995 (9) worm / (2) main valve body 5/16" rubber checkballs E7DZ-7E195A |
| 1996-1998 (8) worm 5/16" rubber checkballs; and E7DZ-7E195A |
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(3) 1/4" & (2) 5/16" Main Control valve body rubber checkballs
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1989-1990 Valve Body Gasket Updates:
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| 1989 No color Strip - 1989 Case/valve body Only |
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| 1990 - 1994 Blue Stripe (discontinued) |
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| 1990 - 1998 - Yellow Stripe (not for use in 1989 case/valve body) |
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(supersedes blue stripe gasket)
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NOTE: 1990-1995 Valve Body Gaskets can NOT be interchanged with 1989 gasket.
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1989-1990
Valve Body
Separator Plate:
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| 1989 2 square cut notches. (Cuts are on near rear tang) |
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| 1990 - 1995 2 half moon cut notches. (Cuts are on rear tang) |
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1996 - 1998 No notches.
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Note: Above different separator plates are NOT interchangeable.
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1989-94 / 1995-97 / 1998
Solenoid Valve
Body Updates:
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| 1989-1994 1st Design. |
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| 1995 -1997 2nd Design. |
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| 1995 -1997 2nd Design with black shield. |
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1998 3rd Design Gray shield (Gas and Diesel Versions)
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1989-95 / 1995-98
Accumulator Valve
Body Updates:
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| 1989-1995 1st Design, Cast number begins with E9xx |
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| 1995 -1998 2nd Design, Cast number begins with F5xx |
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1989-95 / 1995-98
Accumulator
Valve Body
Updates:
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| 1989-1995 1st Design, Cast number begins with E9xx |
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| 1995 -1998 2nd Design, Cast number begins with F5xx |
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1989-94 / 1995-98
Main Control Valve
Body Updates:
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| 1989 1st Design, Cast number begins with E9xx |
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| 1990 -1995 2nd Design, Cast number begins with F0xx |
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1996 - 1998 3rd Design, Cast number begins with F6xx
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