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| MH
4000 Specification Sheet |
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| |
| SPECIFICATIONS |
| Motorhome
Rating |
|
Gross input power 1 |
525 hp (391 kW) |
|
Gross input torque 1 |
1650 lb-ft (2237 N·m) |
|
1 Gross Power Ratings as defined by SAE J1995. |
|
|
| ENGINE
INTERFACE |
| Acceptable
full-load engine governed speed |
1700-2300
rpm |
Acceptable
engine idle speed range
(with transmission in Drive) |
500-800 rpm |
|
|
| MOUNTING |
|
Engine |
SAE No. 1 |
|
Chassis |
Rear support available
(required for some installations) |
|
|
| TORQUE
CONVERTER |
STALL
TORQUE RATIO |
Kp-FACTOR*
AT STALL |
| TC-521 |
2.42 |
59.0
(50.7) |
| TC-531 |
2.34 |
52.2
(44.8) |
| TC-541 |
1.90 |
46.2
(39.7) |
| TC-551 |
1.79 |
44.5
(38.2) |
| TC-561 |
1.58 |
41.2
(35.4) |
|
|
Includes standard integral damper which is operational in lockup |
| *Kp-Factor
defines torque converter capacity. Kp = the ratio of converter pump speed
[rpm] divided by the square of pump torque [lb-ft (N·m)]. |
|
|
| MECHANICAL
RATIOS (RANGE)* |
|
First |
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|
Second |
|
|
Third |
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|
Fourth |
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|
Fifth |
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|
Sixth |
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|
Reverse |
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| RATIO
COVERAGE |
|
Forward |
|
|
*Gear ratios do not include torque converter multiplication. |
|
|
| CONTROL
SYSTEM |
|
Description |
Electronic, closed loop, adaptive with stand-alone Electronic Control
Unit (ECU) |
|
Driver-to-Transmission Interface |
Cab-mounted shift selector, push button or lever |
|
Communication Protocol ? Engine/Vehicle Interface |
SAE J1939, SAE J1587, ISO 9141 |
|
|
| OPTIONAL
ENGINE-DRIVEN POWER TAKEOFF PROVISION ? LEFT OR RIGHT SIDE |
|
PTO Drive |
Engine-driven helical gear |
| PTO
Mounting Pads |
Ten-bolt,
1 o'clock and 8 o'clock positions (as viewed from rear) |
| PTO
Drive Gear Rating |
Continuous
operation |
| Using
One PTO |
1.00
x engine speed, 685 lb-ft (928 N·m) |
|
Using Two PTOs |
1.00
x engine speed, 1175 lb-ft (1593 N·m) |
|
|
| SPEEDOMETER
PROVISION |
|
Description |
Non-zero-crossing square wave |
|
|
8 or 16 pulses per revolution of transmission output shaft |
|
Location |
Electronic output from transmission ECU |
|
|
| OPTIONAL
RETARDER PROVISION |
|
Output |
|
|
Capacity |
|
|
High |
|
2000 lb-ft (2710 N·m) |
600 hp (447 kW) |
|
|
Medium |
|
1600 lb-ft (2170 N·m) |
600 hp (447 kW) |
|
|
Low |
|
1300 lb-ft (1760 N·m) |
500
hp (373 kW) |
|
|
|
| OIL
SYSTEM |
|
Oil type |
Dexron®-III, C4 |
| Capacity
(excluding external circuits) |
|
| Standard
Deep Sump, with PTO |
51
qts (48 liters) |
| Standard
Deep Sump, without PTO |
48
qts (45 liters) |
| Optional
shallow sump, with PTO |
43
qts (41 liters) |
| Optional
shallow sump, without PTO |
40
qts (38 liters) |
|
Filters ? main and cooler |
Replaceable element, integral |
|
|
|
SIZE |
|
|
Basic Model (3000 MH) |
|
31.2 in (792 mm) |
831 lbs (377 kg) |
|
|
With PTO Only |
|
34.0 in (865 mm) |
893 lbs (405 kg) |
|
|
With output retarder only |
|
31.2 in (792 mm) |
906 lbs (411 kg) |
|
|
With PTO and output retarder |
|
34.0 in (865 mm) |
968 lbs (439 kg) |
|
| Depth
(below transmission centerline) |
14.7
in (373 mm) standard deep sump |
| |
13.2
in (335 mm) optional shallow sump |
| *Length
from engine housing to output flange face. |
|
|
| TACHOGRAPH
PROVISIONS |
|
Tone Wheel |
4 or 6-tooth |
| Mounting |
M18 x 1.5 metric thread |
| Location |
Retarder
housing (optional) |
|
Transmission
rear cover (optional) |
|
|
|
Today's larger, heavier motorhomes demand higher horsepower and torque
for increased acceleration. Bigger engines require a transmission that can
handle the horsepower. The Allison MH Series Automatics match your needs
with increased ratings and performance. Call 1-800-252-5ATD for the tools
to help you select an Allison Transmission. You'll see this beautiful country
like you've never seen it before. |
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