Dana Spicer TTC Transmissions

Spicer PRO-SHIFT™ 18-Speed Transmission

The new line of double overdrive PRO-SHIFT™ 18-Speed transmissions is unparalleled when it comes to ratio coverage, fuel economy, versatility and reliability. With 2,050 lbs-ft of torque the new PRO-SHIFT 18-Speed transmissions are built to give you amazing control on the torque delivered by high-performance diesel engines.

Features:

Overall ratio 21.27
Low 1st gear
Double overdrive
Range synchronizer
Isolated shift lever
Electro pneumatic shift control
Common shift pattern
Variety of PTO mountings
Patented OPTI-LUBE design
Aluminum clutch housing

Download Catalog Here Download the service manual Spicer 18-Speed Series Parts Catalog

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
PSDO165-18	37.7	794	13.9	1,650	21.27	15.64	14.89	0.70
PSDO185-18	37.7	794	13.9	1,850	21.27	15.64	14.89	0.70
PSDO205-18	37.7	794	13.9	2,050	21.27	15.64	14.89	0.70

Gear Ratios

Model No.	Reverse Gear Ratios				Gear Ratios
Model No.	R1	R2	R3	R4	1st	2nd	3rd	4th	5th	6th	7th
PSDO165-18	15.64	13.03	3.72	3.10	14.89	12.41	10.40	8.66	7.32	6.09	5.05
PSDO185-18	15.64	13.03	3.72	3.10	14.89	12.41	10.40	8.66	7.32	6.09	5.05
PSDO205-18	15.64	13.03	3.72	3.10	14.89	12.41	10.40	8.66	7.32	6.09	5.05

Gear Ratios Continued

Model No.	Gear Ratios
Model No.	8th	9th	10th	11th	12th	13th	14th	15th	16th	17th	18th
PSDO165-18	4.21	3.54	2.95	2.47	2.06	1.74	1.45	1.20	1.00	0.84	0.70
PSDO185-18	4.21	3.54	2.95	2.47	2.06	1.74	1.45	1.20	1.00	0.84	0.70
PSDO205-18	4.21	3.54	2.95	2.47	2.06	1.74	1.45	1.20	1.00	0.84	0.70

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)
PSDO205-18	150,000	2,050	110,000	2,050	(4)	(4)

Notes: (1) 4x4, 6x6 and/or military applications are considered off-highway. (4) Contact transmission engineering for approvals.

Lubrication Requirements

Non-Synchronized (PRO-SHIFT Models)
Temperature	SAE Grade	Class/Type
All	50	Synthetic Transmission Oil Spicer Specification MS-961-T
Above 00F	50	HD Engine Oil Mil-L-2104D or E API-CD, CE, SF or SG Cat TO-4
Below 00F	30
Above 00F	80W-90	Automotive Gear Oil API MT-1
Below 00F	75W	Automotive Gear Oil API MT-1

Notes: EP gear oils are not recommended for operating temperatures above 2300F. Do not mix engine, transmission or gear (axle) lubes. Synthetic SAE 50 required for applications above 399 Horsepower.

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

Note: Information gathered from TTC Automotive

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