Ratings
| Product Name | Net Input Torque lb-ft (N.M) | Net Input Power hp (kW) | Turbine Torque lb-ft (N.M) | Vocations |
|---|---|---|---|---|
| S6620, M6620 (Manual, Hydraulic, Manual Electric, Automatic Electric Controls) | 2750 (3729) | 900 (671) | 4000 (5423) | Oil Field Pumpers, Frac, Cementing, Drilling, Well Service, Heavy Trucks |
ENGINE INTERFACE
- Acceptable full-load engine governed speed: 1900-2500 rpm
- Minimum engine idle speed range (with the transmission in Drive): 550 rpm
MOUNTING
- Direct: SAE No.1 flywheel housing with flexplate drive. Cradle mount using engine flywheel
housing mounting pads and transmission rear cover mounting pads with 0.625-11 inch series bolts - Remote: Side pads on transmission rear cover, plus front trunnion mount.
TORQUE CONVERTER
| Model | Stall Torque Ratio | Kp-Factor* at Stall |
|---|---|---|
| TC-680 (with retarder) | 2.17 | 53.2 (45.7) |
| TC-680 (without retarder) | 2.08 | 54.6 (46.9) |
| TC-682 | 1.77 | 43.7 (37.5) |
| TC-683 | 1.85 | 35.1 (30.1) |
MECHANICAL RATIOS
Gear ratios do not include torque converter multiplication)
| First | 4.00 : 1 |
| Second | 2.68 : 1 |
| Third | 2.01 : 1 |
| Fourth | 1.35 : 1 |
| Fifth | 1.00 : 1 |
| Sixth | 0.67 : 1 |
| Reverse 1 | – 5.15 : 1 |
| Reverse 2 | – 3.44 : 1 |
| In forward range | 5.97 |
CONTROL SYSTEM
| Description | Automatic Electronic, Manual Electric, Manual Hydraulic |
|---|---|
| Shift Sequences | [C = Converter Mode (lockup clutch disengaged); L = Lockup Mode (lockup clutch engaged)] 1C–1L–2C–2L–3C–3L–4C–4L–5C–5L–6C–6L |
| Driver-to-Transmission Interface | Customer furnished, cab-mounted shift selector |
PHYSICAL DESCRIPTION
| Length (engine housing to flange face) |
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| Width |
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| Depth (below horizontial center line) | 20.1 in (511 mm) | |
| Height (above horizontial centerline) |
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| Dry Weight |
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SIDE ENGINE-DRIVEN POWER TAKE-OFF PROVISION
| PTO drive | Engine-driven spur gear |
| PTO mounting pad | Eight-bolt, 4 o’clock position (as viewed from rear of transmission) |
| PTO drive gear ratio | 1.00 x engine speed |
| PTO drive gear rating | Intermittent: 200 hp (149 kW) and Continuous: 125 hp (93 kW) |
LIGHT DUTY ACCESSORY DRIVE
| Accessory drive | Engine-driven, internal spline |
| Accessory drive mounting pad | Location: 4 o’clock position (as viewed from rear of transmission)
Orientation: Toward rear of transmission |
| Accessory drive ratio | 1.00 x engine speed |
| Accessory drive rating | Torque: 25 lb-ft (24 N m)
Power: 10 hp (7.5 kW) |
TOP ENGINE-DRIVEN POWER TAKE-OFF PROVISION (OPTION)
| PTO drive | Engine-driven spur gear
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| PTO mounting pad | Eight-bolt, 12 o’clock position (as viewed from rear of transmission)
|
| PTO drive gear ratio | 1.21 x engine speed
|
| PTO drive gear rating
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INPUT RETARDER PROVISION (OPTION)
| Type | Integral, hydraulic – Coupling-type rotor between fixed stators |
| Capacity at 2100 rpm |
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OIL SYSTEM
| Oil Type | C-4
|
| Capacity Excluding external circuits | 18.0 Gallons (68 liters)
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| Main Circuit Oil Filter |
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| Cooler circuit oil filter (optional)
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Replaceable element, remote-mounted |
SPEEDOMETER PROVISIONS
| Electronic: | Location: LS-TTL signal, 39 pulses per output shaft revolution Output signal from transmission ECU |
| Mechanical Drive: | Location: SAE “Heavy Duty” 5/32-inch; Ratio 0.50: 1 Transmission rear cover |
PARK BRAKE PROVISION
- Type (customer supplied): 12 x 5-inch drum
- Capacity at lever apply force: 90,000 lb-in at 517 lbf (10,168 N*m at 2058 N)