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Heavy Duty Truck Tech Notice - Truck Scanner

23 mars 2013

FORD AXODE (AX4S), AX4N (4F50N) - Exploded Vane Rings And Pump Rotors Pump Bearing Changes

FORD AXODE (AX4S), AX4N (4F50N) - Exploded Vane Rings And Pump Rotors Pump Bearing Changes
CHANGE: Beginning at the start of production for 2000 on all AX4N transaxles and 2001 on all AX4S transaxles, Ford Motor Company introduced a new design pump bearing that includes an integrated seal, as shown in Figure 1. When this new design bearing...
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20 mars 2013

FORD/MAZDA CD4E/LA4A-EL - HIGH LINE PRESSURE WITH NO CODES STORED

FORD/MAZDA CD4E/LA4A-EL - HIGH LINE PRESSURE WITH NO CODES STORED
COMPLAINT: Line pressure is high and there may or may not be gear ratio error codes stored and transmission slip may or may not be experienced. A False code 452, for loss of vehicle speed signal, may also be stored. CAUSE: The cause may be, a Forward...
20 mars 2013

FORD 4R100 - "PWM" AND "NON-PWM" PUMP DIFFERENCES

CHANGE: Beginning at the start of production in 1999, the 4R100 transmission was offered with two different torque converter clutch application strategies. A "PWM" (Pulse Width Modulated) version, was added in V-10 gas powered vehicles and all diesel,...
13 mars 2013

THM 440-T4 MODULATOR VALVE “BUZZ” (CUP PLUG)

THM 440-T4 MODULATOR VALVE “BUZZ” (CUP PLUG)
Bulletin Covers: (Figure 1)Modulator valve buzz noise can be caused by a missing orificed cup plug in the modulator circuit of the channel plate for transaxles built prior to February 1, 1987 (Julian Date 032). Service Action: (Figure 2)Remove the transaxle...
13 mars 2013

THM 440-T4 - 2nd Gear Start (Shift Valve Clip)

THM 440-T4 - 2nd Gear Start (Shift Valve Clip)
A 1984-87 vehicle equipped with a THM 440-T4 (Figure 1) may start out in 2nd gear instead of 1st gear. This condition could occur intermittently or all High line pressure could be a cause by holding too much governor pressure and not allowing the 1-2...
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6 mars 2013

THM 3T40 (125C) - TCC ENGAGEMENT

THM 3T40 (125C) - TCC ENGAGEMENT
A new torque converter clutch (TCC) solenoid, which has an internal rubber seal that will prevent sediment from sticking to the electromagnetic portion of the solenoid, is in production in all 1987 THM 125C models built after Julian date 160. The new...
6 mars 2013

THM 440-T4 - HARSH REVERSE ENGAGEMENT

THM 440-T4 - HARSH REVERSE ENGAGEMENT
COMPLAINT: Harsh Garage Shift From Park/Neutral To Reverse. Find some hot obd2 scanner to know more.CAUSE: The cause may be:1. Low vacuum supply to the vacuum modulator.2. Stuck modulator valve in case.3. No. 9 checkball missing or off location. CORRECTION:...
2 mars 2013

THM 4T65-E - SOFT 1-2 SHIFT OR DELAY TO REVERSE (MAY STORE DTC 1811)

THM 4T65-E - SOFT 1-2 SHIFT OR DELAY TO REVERSE (MAY STORE DTC 1811)
COMPLAINT: Some General Motors vehicles equipped with the THM 4T65-E transaxle, may exhibit a soft 1-2 upshift and/or a delay when the selector lever is placed into reverse. These conditions may also set Diagnostic Trouble Code 1811, which is "Maximum...
27 février 2013

THM 4L60-E - PUMP INTERCHANGE

1993 -1994 MODELS: Pump Body - All models use the 10 Vane rotor and slide assembly, and this Pump Body has the same casting and worm track configuration as the 1985-1993 models of the 700-R4 transmission. Refer to Figure 3. Pump Cover - All models of...
27 février 2013

MITSUBISHI F4A40/50 SERIES - Harsh Or Flared 3rd Gear Upshift

MITSUBISHI F4A40/50 SERIES - Harsh Or Flared 3rd Gear Upshift
COMPLAINT: Before or after overhaul, vehicles equipped with the F4A40 or F4A50 series transaxles may exhibit a Flared or Harsh upshift into 3rd gear. CAUSE: The cause may be, worn sealing ring lands where the Overdrive Clutch sealing rings ride, creating...
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Heavy Duty Truck Tech Notice - Truck Scanner
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