Spicer Tremec EASY-SHIFT™ 7-Speed Transmission

Spicer EASY-SHIFT™ 7-Speed Transmission

The Spicer 7-Speed transmissions have broad range of applications and are alternative to the 5-speed/2-axle combination. They are great 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-RAIL™ standard feature

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General Specifications

Model No.	Length (in)	Weight (lbs)	Lube Cap. (liters)	Torque Cap. (lbs-ft)	Overall Ratio	Reverse Gear	Gear Ratios
Model No.	Length (in)	Weight (lbs)	Lube Cap. (liters)	Torque Cap. (lbs-ft)	Overall Ratio	R1	Low Gear	Top Gear
ES56-7B	32.87	454	10.4	560	10.09	8.99	10.09	1.00
ESO66-7B	32.87	454	10.4	660	10.11	6.66	7.48	0.74

Gear Ratios

Model No.	Reverse Gear Ratios				Gear Ratios
Model No.	R1	R2	R3	R4	1st	2nd	3rd	4th	5th	6th	7th
ES56-7B	8.99				10.09	5.98	3.72	2.56	1.81	1.35	1.00
ESO66-7B	6.66				7.48	4.43	2.76	1.90	1.34	1.00	0.74

General Application Guidelines

Model No.	On-Highway (1)		Off-Highway		Off-Shore
Model No.	GVW (lbs)	Torque (lbs-ft)	GVW (lbs)	Torque (lbs-ft)	GVW (lbs)	Torque (lbs-ft)
ES56-7B (2)	50,000	560	35,000	520	35,000	520
ESO66-7B	65,000	660	50,000	560	50,000	560

Notes: (1) 4x4, 6x6 and/or military applications are considered off-highway. (2) Not approved for line-haul applications.

Center of Gravity

Model No.	Inertia (in-lb-sec2)	Weight (lbs)	Center of Gravity (in)
Model No.	Inertia (in-lb-sec2)	Weight (lbs)	A	B	C	D
ES52-7B	0.20106	454	17.75	1.11	0.24
ES56-7A	0.20023	454	17.75	1.11	0.24
ES56-7B	0.20106	454	17.75	1.11	0.24
ESO66-7A	0.33015	454	17.43	1.32		0.09
ESO66-7B	0.33152	454	17.43	1.32		0.09

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.

PTO Installation Requirements

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
ESO66-7B	66	34	7	17.5 R.H.Helix	Left/Right	1.411

Lubrication Requirements

Synchronized (EASY-SHIFT Models)
Temperature	SAE Grade	Class/Type
All	30 or 50	Synthetic Transmission Oil Spicer Specification MS-961-T
Above 00F	30 or 40	HD Engine Oil Mil-L-2104D or E API-CD, CE, SF or SG Cat TO-4
Below 00F	30
All	80	Mineral Oil GL-1, -2

Note: Do not use multi-viscosity engine oils or EP additives as found in axle lubricants.

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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