Translate

Solenoids Location on ALLISON Transmission 3000/4000 Series

ALLISON Transmission 3000/4000 Series

Figure 1.1 - Control Valve Assy (Allison 4700 OFS) 
PCS-Pressure Control Solenoid
SS-Shift Solenoid
TCC-Torque Converter Clutch
PS-Pressure Switch


Solenoids location in the control module are as illustrated in Figure 1.2 and 1.3. Refer to Figure 1.2 as necessary when using the DTC schematics.

Figure 1.2 - Control Module Solenoid Location

Figure 1.3 - Control Module Solenoid Location with Prognostics


SOLENOID AND CLUTCH CHART
Basic Configuration
7-Speed Configuration (3000/4000 Product Families)

Note:
X - Indicates solenoid is electrically ON
Y - Indicates clutch is hydraulically applied.
Blank - Indicates solenoid is electrically OFF or clutch is not hydraulically applied
O - Optional ON or OFF
* See NVL explanation below:
NVL - As a diagnostic response:
If Turbine Speed is below 150 Rpm when Output Speed is below 100 Rpm and Engine Speed is above 400 Rpm, Neutral Very Low (NVL) is commanded when N-C5 (Neutral) is the selected range. NVL is achieved by turning PCS4 Solenoid "ON" in addition to PCS3 being "ON", which locks the output. Otherwise, PCS4 Solenoid is turned "OFF" N1 (Neutral).

As a commanded range when shifting to Fire Truck Pump Mode:
While wire 123 is energized before wire 122 is energized when going into Fire Pump Truck Mode, Neutral Very Low (NVL) will be commanded to lock the output to assist the shifting of the split-shaft PTO transfer case from road mode to pump mode. While wire 123 is de-energized before wire 122 is de-energized when shifting out of Fire Truck Pump Mode, Neutral Very Low (NVL) will be commanded to lock the output to assist the shifting of the split-shaft PTO transfer case from pump mode to road mode.

#Additional Note:
→TCC Solenoid, Allison P/N 29544297 (Color Coded Natural Brown)
→PCS1 Solenoid, Allison P/N 29541897 (Color Coded Black)
→PCS2 Solenoid, Allison P/N 29541897 (Color Coded Black)
→PCS3 Solenoid, Allison P/N 29544297 (Color Coded Natural Brown)
→PCS4 Solenoid, Allison P/N 29544297 (Color Coded Natural Brown)
→Main Mod Solenoid, Allison P/N 29544297 (Color Coded Natural Brown)
→Shift Solenoid, Forward (SS1), Allison P/N 29544297
→Shift Solenoid, Forward (SS2), Allison P/N 29546693
→Pressure Switch (PS1), Allison P/N 29506484


Read More:







Blog.Teknisi

Subscribe to receive free email updates:

2 Responses to "Solenoids Location on ALLISON Transmission 3000/4000 Series"

  1. Watch and Download world's famous Turkish action drama Kurulus Osman Season 3 in English on link below
    👇
    Kurulus Osman Season 3

    Kurulus Osman Season 3 Episode 1
    On link below
    Kurulus Osman Season 3 Episode 1

    Crypto trading course
    👇
    Crypto quantum leap

    YouTube course
    Be a professional YouTuber and start your carrier
    Tube Mastery and Monetization by matt

    Best product for tooth pain ,
    Cavity ,
    Tooth decay ,
    And other oral issues
    Need of every home
    With discount
    And digistore money back guarantee
    Steel Bite Pro

    ReplyDelete
  2. I noticed the diagrams are of an open transmission. Would the Shift Sensors be removable without removing and opening the transmission in a T880?

    ReplyDelete