Allison 1000/2000/2400 Vacuum Test Guide
Vacuum testing is an efficient way to identify the root cause of transmission problems and evaluate the effectiveness of repairs. Frequent, proper vacuum testing can put money in the bank, improve turnaround time in your bays, and prevent costly comebacks.
See how easy it is to master vacuum testing and work with confidence knowing your rebuild is done right the first time.
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Related Units
Related Parts
Required
Recommended
1000/2000/2400
Trim Valve & Spring Kit 37000-12K
Fits '00-'09 units only. The F-trim spring is applicable to '00-'05 valve body casting only.
-
Helps cure:
- Premature clutch wear
- Inability to alter clutch apply pressure curve
Required
Recommended
1000/2000/2400
Oversized E-Shift Valve Kit 37000-15K
Fits '00–'09 units only.
-
Helps cure:
- Code P0872
- Code P1711
- Pressure switch stuck on
- Failsafe mode
- 3rd Gear starts
Required
Recommended
1000/2000/2400
Oversized Control Main Relief Valve 37000-19
Fits ’00–’15 units only.
-
Helps cure:
- Shift concerns
- Loss of shift solenoid control pressure
Required
Recommended
1000/2000/2400
Oversized Manual Valve Kit 37000-28K
Fits '00–'15 units only.
-
Helps cure:
- Low line pressure
- Delayed Drive
- Delayed Reverse
Required
Recommended
1000/2000/2400
Oversized F-Trim Valve Kit 37000-30K
Fits '00–'05 units only.
-
Helps cure:
- Overheated transmission
- Code P0741
- RPM surge
- TCC apply & release concerns
Required
Recommended
1000/2000/2400
Oversized Gain Valve Kit 37000-24K
Fits '00–'09 units only.
-
Helps cure:
- Shift concerns associated with circuit pressure loss
Required
Recommended
1000/2000/2400
Manual Valve Selector Pin 37000-29K
Fits '00–'15 units only.
-
Helps cure:
- Delayed Drive
- Low line pressure
- 1-2, 2-3, 4-5 Flares
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