Allison 1000/2000 P2 Planetary Carrier Changes - Transmission Digest

Allison 1000/2000 P2 Planetary Carrier Changes

In this edition of Transmission Tech/Talk, Wayne Colonna describes a new design for the Allison 1000/2000 P2 sun gear thrust bearing.

CHANGE:

Vehicles equipped with the Allison 1000/2000 transmission built in September 2006 and later, have a new design P2 Sun gear thrust bearing (T5 Allison reference) for increased capacity, starting with serial number 6310696028. See Figure 1 for Tag information.

Figure 1

REASON:

For improved durability

PARTS AFFECTED:

  1. P2 SUN GEAR THRUST BEARING (T5)- The thrust bearing thickness and dimensions of the races changed as shown in Figure 2.
  2. P2 SUN GEAR- The inside diameter of the Sun gear dimensionally changed, as shown in Figure 2, to accommodate the new dimensions of the new thrust bearing.
  3. P2 CARRIER ASSEMBLY- The carrier assembly changed to accommodate the bearing changes, as shown in Figure 3. See Figure 3 also for the location of the P2 carrier assembly in the cut-away illustration. See Figures 4 and 5 for an exploded view of the complete planetary assembly.
Figure 2
Figure 3
Figure 4
Figure 5

SERVICE INFRMATION:

P2 SUN GEAR THRUST BEARING (T5)……………………………………………………………              29541702

P2 SUN GEAR…………………………………………………………………………………………….             29545931

P2 CARRIER ASSEMBLY…………………………………………………………………………………                       29545240

INTERCHANGEABILITY:

None of the parts listed above are interchangeable for back service, unless used as a set. Note: If back servicing, it will be necessary to verify endplay and internal stack-up. Thicker sun gear spacer Part number 29541728 may be required for transmission serial numbers prior to 6310467635 (Indy.) or 6320601447 (Baltimore built). See Figure 1 for Tag information.

Legend for figures 4 and 5

   1.  INPUT SUN GEAR, P1SUN GEAR (INSTALLED IN C1/C2 HOUSING).

   2.  INPUT SUN GEAR/P1 PLANETARY CARRIER THRUST BEARING.

   3.  P1 PLANETARY INTERNAL RING GEAR.

   4.  P1 RING GEAR/P2 RING GEAR “PEEK” THRUST WASHER.

   5.  P1 PLANETARY SNAP RING, RETAINS P2 INTERNAL RING GEAR.

   6.  P1 PLANETARY CARRIER ASSEMBLY.

   7.  P2 PLANETARY INTERNAL RING GEAR.

   8.  P1 PLANETARY CARRIER/P2 PLANETARY CARRIER THRUST BEARING.

   9.  P2 PLANETARY SNAP RING, RETAINS P3 INTERNAL RING GEAR.

 10.  P2 PLANETARY CARRIER ASSEMBLY.

 11.  P3 PLANETARY INTERNAL RING GEAR.

 12.  TRANSMISSION MAIN SHAFT.

 13.  P2 PLANETARY CARRIER/P2 SUN GEAR THRUST BEARING (T5).

 14.  P2 SUN GEAR.

 15.  SUN GEAR SPACER.

 16.  P3 SUN GEAR.

 17.  P3 SUN GEAR/OUTPUT SHAFT THRUST BEARING.

 18.  OUTPUT SHAFT (MODEL SENSITIVE)..

 19.  P3 PLANETARY CARRIER ASSEMBLY.

Figure 13 With Legend

You May Also Like

Infiniti G37 RE7R01A chassis codes set

The complaint A 2013 Infiniti G37 equipped with the RE7R01A transmission and the EXT13C transfer case has a complaint of trouble codes C1204 “4WD Solenoid Malfunction” and C1105 “Right Rear Wheel Speed Sensor Fault” stored. Due to extensive damage, the transfer case was replaced, which did not eliminate the stored codes. The shop then replaced

Tech-Talk-Aug-Figure-5-1400

The complaint

A 2013 Infiniti G37 equipped with the RE7R01A transmission and the EXT13C transfer case has a complaint of trouble codes C1204 “4WD Solenoid Malfunction” and C1105 “Right Rear Wheel Speed Sensor Fault” stored. Due to extensive damage, the transfer case was replaced, which did not eliminate the stored codes. The shop then replaced the TCM, but the codes remained. Wiring was checked and was found to be in good condition.

Honda Accord BB7A six-speed: P2720 code set after collision

The complaint A 2015 Honda Accord with a 3.5-liter engine and the BB7A six-speed transmission (seen in figure 1, above), was involved in a minor collision to the left front of the vehicle. The vehicle was drivable and was taken to the transmission shop. Vehicle diagnostics revealed a P2720 “Pressure Control Solenoid D Voltage Low”

Tech-Talk-Aug-Figure-1-1400
42RLE buzzing noise on initial engagement

The complaint A 2005 Jeep Wrangler equipped with the 42RLE transmission had a buzzing noise when the shift selector was moved to the drive position. The vehicle was actually brought in with a shift complaint, at which time the owner of the vehicle also said that the buzzing noise was present since he purchased the

62TE delayed forward engagement

The complaint A 2016 Dodge Journey with the 62TE transmission had a complaint of delayed forward engagement and fluid leaking out of the vent when the transmission is placed in drive only. A code P0740 “Torque Converter Clutch Malfunction” was set. Related Articles – Shift Pointers: What to do when the 62TE TRS tab breaks

Ford 6F35 harsh forward re-engagement after stop/start

The complaint A 2014 to 2016 Ford Escape equipped with the 6F35 transmission built on or before Feb. 26, 2016, may have a complaint of a harsh forward or reverse engagement after an active stop/start event. The Malfunction Indicator Lamp may be illuminated and diagnostic trouble code P0C27 “Auxiliary Transmission Fluid Pump Motor Current Low”

Tech-Talk-May-Figure-9

Other Posts

How the Ford engine stop/start system affects transmissions

2018 and later Ford Escape vehicles equipped with a 1.5 L Eco-Boost, 2.0-liter turbocharged engine or the 2L VCTi engines, and the 6F35 transmission, have an engine stop/start system. The stop/start feature can be disabled by the driver and will remain disabled after each key cycle until reactivated by the driver. Some Ford Fusion and

Tech-Talk-May-Figure-1
Ford harsh downshifts: 6R75 2-1, 10R60 7-6

Complaints, causes and corrections for two different Ford transmissions experiencing harsh downshifts.

Tech-Talk-January-Figure-8
Ford 6R140 no engagement cold

The complaint A 2015 Ford F-250 equipped with the 6R140W transmission has just been overhauled. Shortly afterward, the transmission has begun to develop forward and reverse engagement problems when the unit is cold. As it warms up towards operating temperature, the engagement problems diminish and do not return until the next cooldown period. Trouble codes

Tech-Talk-January-Figure-5
Ford 4R70W solenoid codes set

The complaint During the overhaul process of a Ford 4R70W transmission, it was necessary to replace the hard wire frame and case connector. After repairs were completed and the technician prepared to take the vehicle for a road test, the transmission took off in a higher gear and the MIL illuminated. The PCM was scanned

Tech-Talk-January-Figure-4