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Two five-speed hands-on transmissions were provided on the 1994 dodge Ram; the V6 gained the NV3500, and also the various other engines gained the NV4500/NV4500HD. Both to be made by brand-new Venture Gear, a joint venture of GM and also Chrysler, and also had a 1:1 fourth gear; overdrive to be .73 and also .75, respectively. The NV3500 started with a lower first gear (4.01 vs 5.61) and also had lower 2nd and 3rd gears.Automatic transmissions to be the 42RH and 46RH, differing mostly in your capacity. Castle shared third gear and also overdrive ratios (1:1 and 0.69:1, respectively) yet the heavier-duty automatic had actually a lower an initial and second gear.Neutral gear noise on ram Pickup and also Dakota manual transmissions supplied with V-6 and also V-8 gasoline engines was decreased by a new clutch disc design that had actually four, rather than five, damper springs. Having actually fewer springs allowed each feather to be longer and have a lower rate for far better vibration damping through the same torque volume as the previous design. Longer, reduced rate bowl damper springs decreased gear rattle on diesels.Clutch actuation on the new Ram pickup was hydraulic. Master and slave cylinders were lightweight molded plastic with steel liner for durability.With hand-operated transmissions, the lever position was determined by human determinants engineering and also jury evaluation. A rubber sleeve secluded the shifter native noise and also vibration in the transmission. A jury evaluation figured out the durometer of the sleeve that detailed the best combination of change feel and also isolation. A flexible change boot attached to the floor pan over a foam gasket hidden the opening for the shifter and effectively clogged the passage of noise. A resilient knob was threaded onto the shifter and also locked in ar with a seed recessed in the top. A transition pattern insert snapped right into the top of the knob, concealing the locking nut.The new V10 and also Cummins turbodiesel upgrades forced a stronger manual transmission. The NV4500 HD was much easier to transition than the prior diesel manual, while all ratios, forward and also reverse, were synchronized (unlike some competitive transmissions). Dual-cone synchronizers lessened effort at the shift knob by 10-15%. Torque volume was 450 lb-ft, 10% more than the vault Getrag 360 heavy-duty transmission, thanks partially to larger diameter input and also output shafts.The NV 4500 hand-operated transmission was brought over indigenous the front Ram.The NV 3500 was provided with 1994 ram 1500 models (and the 318-powered Dakota). It provided smoother easier shifts and gear ratios an ext suitable to a half-ton pickup 보다 the transmission offered in the previous ram pickup. Changing was easier since internal materials were much less massive and had less rotating inertia, therefore moved and readjusted speed an ext easily. Moving to turning back was synchronized for smooth operation. The shift pattern had actually three planes, with Reverse opposite fifth gear at the right. Shifting right into reverse throughout forward activity was blocked by the turning back synchronizer and by a slight offset between the 2 gates.A stub bar on the transmission cover selected ratios with a single-rail mechanism. The infection case and also clutch real estate were a one-piece aluminum casting to reduced weight and noise transmission. The NV 3500 infection weighed 100 pounds much less than its predecessor.Automatic transmissions47RH transmission detailsThe 46RH transmission, with higher wide-open throttle transition points, was supplied on every trucks through V-8 engines. The 46RH transmission had actually a speak converter with lock-up clutch, a timeless TorqueFlite three-speed planetary transmission, and an electronicallycontrolled overdrive unit with a manual override.The 42RH transmission, i m sorry was unmodified from 1993, was used on every trucks v the 3.9-liter V-6 engine. It was comparable to the 46RH other than in capacity.For smooth operation, the PCM (Powertrain regulate Module) on every gas engines adjusted the automobile speed in ~ which the speak converter clutch was applied for sports in tire size and axle ratio, to assure that converter clutch actuation to be coordinated v shifts come overdrive. The first time the converter clutch was applied was after ~ the ignition to be switched on, the PCM computed and stored the variable relating vehicle speed come transmission calculation speed.The lockup talk converter clutch engaged at highway cruising speeds, once the transmission remained in the highest gear selected - overdrive or, when overdrive was locked out by the driver, third (direct) gear.A infection temperature regulate system was typical on lamb pickup v the 47RH transmission and optional with the 46RH.
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The digital transmission regulate unit could change to third gear and engage the converter clutch if transmission oil temperature reached its top limit. A temperature sensor in the cooler heat to the radiator provided the signal; it also controlled a warning lamp on the instrument panel which would certainly light if the downshift didn"t lower transmission liquid temperatures.Trucks/SUVsJeepRamMilitary Engines2015-2017Forums