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EASY-SHIFT™ 7-Speeds
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The EASY-SHIFTTM 7-Speed transmissions are designed to be driver productivity tools. With its broad range of applications, they become an alternative to the 5-speed/2-axle combination. They are ideal for general purpose and city delivery vehicles. |
Features:
- Gimbal tower lever assembly for a tighter shift pattern
- Isolated shift levers for reduced noise and vibration
- Taper Lok shift collars and synchronizers for smooth shifting
- New improved shift rails and forks designed for longer wear
- OPTI-RAILTM standard feature
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How can we assist you with your specific requirements?
If this information is insufficient to select a transmission model, please use this
Medium- and Heavy-Duty Application Engineering Form
to supply your specifications. Our application engineers will be glad to customize and
recommend a model for you. |
To print or download a PDF version of this page, please click here or on the
icon found above each table below.
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Model No. |
Length
(mm) |
Weight
(kg) |
Lube Cap.
(pints) |
Torque Cap.
(N-m) |
Overall
Ratio |
Reverse
Gear |
Gear Ratios |
R1 |
Low Gear |
Top Gear |
ES56-7B |
834.90 |
205.89 |
18.89 |
759.36 |
10.09 |
8.99 |
10.09 |
1.00 |
ESO66-7B |
834.90 |
205.89 |
18.89 |
894.96 |
10.11 |
6.66 |
7.48 |
0.74 |
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Model No. |
Reverse Gear Ratios |
Gear Ratios |
R1 |
R2 |
R3 |
R4 |
1st |
2nd |
3rd |
4th |
5th |
6th |
7th |
ES56-7B |
8.99 |
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10.09 |
5.98 |
3.72 |
2.56 |
1.81 |
1.35 |
1.00 |
ESO66-7B |
6.66 |
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7.48 |
4.43 |
2.76 |
1.90 |
1.34 |
1.00 |
0.74 |
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Model No. |
On-Highway (1) |
Off-Highway |
Off-Shore |
GVW
(kg) |
Torque
(N-m) |
GVW
(kg) |
Torque
(N-m) |
GVW
(kg) |
Torque
(N-m) |
ES56-7B (2) |
22,675 |
759.36 |
15,872.50 |
705.12 |
15,872.50 |
705.12 |
ESO66-7B |
29,477.50 |
894.96 |
22,675 |
759.36 |
22,675 |
759.36 |
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| Notes: |
| (1) 4x4, 6x6 and/or military applications are considered off-highway. |
| (2) Not approved for line-haul applications. |
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Model No. |
Inertia (mm-kg-sec2) |
Weight (kg) |
Center of Gravity (mm) |
A |
B |
C |
D |
ES52-7B |
2.32 |
205.89 |
450.85 |
28.19 |
6.10 |
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ES56-7A |
2.31 |
205.89 |
450.85 |
28.19 |
6.10 |
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ES56-7B |
2.32 |
205.89 |
450.85 |
28.19 |
6.10 |
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ESO66-7A |
3.81 |
205.89 |
442.72 |
33.53 |
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2.29 |
ESO66-7B |
3.83 |
205.89 |
442.72 |
33.53 |
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2.29 |
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| A. Horizontal Distance from clutch housing pilot diameter to CG. |
B. Vertical Distance below (or above) mainshaft centerline to CG.
[below is positive, above negative] |
| C. Rear view - Horizontal Distance left of mainshaft centerline to CG. |
| D. Rear view - Horizontal Distance right of mainshaft centerline to CG. |
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Model No. |
Gear Speed%
of Engine |
Tooth
Count |
Pitch |
Geometry |
6-Bolt |
Pitch Line
to Aperture
Face |
8-Bolt |
Pitch Line
to Aperture
Face |
ES56-7B |
49 |
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ESO66-7B |
66 |
34 |
7 |
17.5 R.H.Helix |
Left/Right |
1.411 |
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Synchronized (EASY-SHIFT Models) |
Temperature |
SAE Grade |
Class/Type |
All |
30 or 50 |
Synthetic Transmission Oil
Spicer Specification MS-961-T |
Above 0°F |
30 or 40 |
HD Engine Oil
Mil-L-2104D or E
API-CD, CE, SF or SG
Cat TO-4 |
Below 0°F |
30 |
All |
80 |
Mineral Oil GL-1, -2 |
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| Note: Do not use multi-viscosity engine oils or EP additives as found in axle lubricants. |
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Change Intervals |
Type |
On Highway |
Off Highway |
Mineral |
1 year or 100,000 miles |
Every 1000 Hours |
Semi-synthetic |
2 years or 250,000 miles |
Every 1000 Hours |
Synthetic |
5 years or 500,000 miles |
Every 1000 Hours |
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