10
The following auxiliary filters are recommended:
Table 1–5. Auxiliary Filter Recommendations
1–11. BREATHER
The breather is located at the top of the transmission housing. It serves to prevent
pressure buildup within the transmission; it must be kept clean and the passage must
be kept open. The prevalence of dust and dirt will determine the frequency at which
the breather requires cleaning. Use care when cleaning the transmission. Spraying
steam, water, or cleaning solution directly at the breather can force the water or
solution into the transmission.
1–12. TRANSMISSION STALL TEST AND NEUTRAL
COOL-DOWN CHECK
a.
Purpose
The stall test provides a method for determining if the malfunction is in
the engine or in the transmission when a vehicle is not performing
satisfactorily.
The neutral cool-down check utilizes the two minute cooling period on the stall test
to gather fluid temperature data for troubleshooting reference.
Filter Assembly Filter Element
Allison 29510923*
AC PM 13-16
AC PM 16-1
FX 11583
Fram HP 1-1
Purolator OF-15C-1
Purolator 20-10
Allison 29510922*
PF 897
PF141
HF6520
HP 1 or AC HD 222
OF-2C-1
PER-20
* High-efficiency filter and element are available from your authorized Allison distributor.
Ref: SIL 12-TR-93 (latest revision)
NOTE:
Before conducting the stall test, obtain the engine
manufacturer’s data from the engine manufacturer or from your
equipment dealer or distributor.