TM-9-2320-283-34-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1983
TM-9-2320-283-34-1 - Page 43 of 624
TM 9-2320-283-34-1
EQUIPMENT DESCRIPTION AND DATA
1-8.
EQUIPMENT DATA (Continued)
Table 1-1.
EQUIPMENT DATA (Continued).
TRANSMISSION (Continued).
Torque Converter
Type
. .
.........................................................................................
Single stage, polyphase 3 element
Model .
.....................................................................................................................................
TC 498
Torque Multiplication Ratio (at stall).
..........................................................................................
2.35:1
Gear Type .
.....................................................................................................................
Planetary straight-cut
...........................................................................................................................
spur,
constant mesh
Clutches.
............................
.
Oil
cooled, hydraulically actuated, spring released, self-compensating for wear
Oil Pressure
Main Pressure @ 600 rpm fwd or rvs
. .
....................................................................................
90 psi
Main Pressure @ 1200 rpm fwd (stall) .
.............................................................................
140-175 psi
Main Pressure @ 1500-2000 rpm in all forward ranges.
....................................................
140-175 psi
Lubrication Pressure .
.........................................................................
Within 10
psi of main pressure
Oil Type .
......................................................................................................................................
OE/HDO-10
Mechanical Gear Ratios
First.
..........................................................................................................................................
3.69:1
Second
. .
.................................................................................................................................
2.00:1
Third.
.........................................................................................................................................
1.58:1
Fourth
. .
.................................................................................................................................
1.25:1
Fifth.
.........................................................................................................................................
1.00:1
Reverse . .
...............................................................................................................................
9.65:1
REAR TANDEM AXLES
Manufacturer.
.......................................................................................................................................
Eaton
Model
Forward Rear.
......................................................................................................................
DS 401 P
Rear Rear.
.............................................................................................................................
RS 401
Ratio
..................................................................................................................................................
4.33:1
Load Rating.
.....................................................................................................................................
40,000 lbs
FORWARD REAR AXLE BRAKE CHAMBER
Manufacturer . .
................................................................................................................................
Anchorlok
Model
..................................................................................................................................................
2024
Net Weight.
.........................................................................................................................................
15.2 lbs
1-32
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