QU10153 Dodge NV4500HD Concave Mainshaft Lock Washer

QU10153 Dodge NV4500HD Concave Mainshaft Lock Washer is a concave lock washer for all 1994-2004 Dodge NV4500HD 5 speed manual transmissions in Ram 2500, Ram 3500 Diesel or gas V10 powered trucks. Imported.

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Dan the Gear Man® Tech Notes:
Location
1994-1995
5th Gear Failure
Matching Parts
Lubricants, Sealants, Threadlockers
NV4500 Tools
Applications

Tech Note 1: Location
The concave side goes against the back of the mainshaft 5th gear.

Tech Note 2: 1994-1995
Early production NV4500HD transmissions (1994-1995) did not come with this washer from the factory. It was added to help slow down the mainshaft gear working the mainshaft nut off.

Tech Note 3: 5th Gear Failure
The infamous "NV4500 5th Gear Failure" is almost always wrongly blamed on the nut. Having your nut back off is a consequence of an inadequately supported mainshaft 5th gear on stock and full spline mainshafts. Radial and axial movement of the gear will loosen the nut. No nut design will prevent 5th gear failures although they may delay them. The only way to solve the problem is to redesign the shaft, gear, and nut set which we did with our Torque King® mainshaft sets. See Tech Article 5th Gear Failures and Solutions for more information.

Tech Note 4: Matching Parts
Matching Parts for QU10153:
QU10119 Timken Mainshaft Rear Bearing
QU10118 Timken Mainshaft Rear Bearing Cup
QA10009 Complete Mainshaft Shim Kit
QU10009B Basic Mainshaft Shim Kit
QU10069 Nut and Washer Set for Dodge NV4500HD
QU10175 Mainshaft Rear Retainer Thrust Plate
QU10303 Mainshaft Reverse Gear Thrust Washer
QU10144 Timken High Performance Countershaft Rear Bearing
QU10145 Timken High Performance Countershaft Rear Bearing Cup
QA10008 Complete Countershaft Shim Kit
QU10008B Basic Countershaft Shim Kit
QK1102 Lock Ring Kit Includes 4 Lock/Snap Rings
QK1118 Rear Bearing Retainer/Thrust Plate Bolt Set
QU10037 Countershaft Bearing Plate
QU10304 Countershaft 5th Gear Thrust Washer
QK1110 Thrust Washer Locating Pin Set
NV4500GME Low Ratio Transmission Case for 1992-1995 GM
NV4500E Low Ratio Transmission Case for 1996 GM and 1994-1996 Dodge
NV4500L High Ratio Transmission Case for 1997 and Newer GM and Dodge
QU90020 NV4500 Manual Transmission Oil
TM1003 NV4500 Shop Manual
V1003DVD NV4500 Overhaul Video

Tech Note 5: Lubricants, Sealants, Threadlockers
Early production NV4500 Transmissions used an anaerobic sealant (QU90003) to seal between the main case and input bearing retainer, top cover, and rear housing. Mid-production units used anaerobic sealant just on the input retainer and RTV for everything else. Later production transmissions used black RTV Sealant (QU90006 or QU90005) for everything. Either type of sealant works fine (except the PTO covers ALWAYS should be sealed with RTV), but I prefer RTV for all components. Regardless of which sealant you use, make sure excess sealant does not block the lube access hole at the top of input retainer pilot that fits into the transmission case. Also, the threaded holes in the main case for the four retainer bolts and 12 PTO bolts are open ended, so you must use new bolts with factory applied threadlocker or apply Threadlocker (S24200) to your existing bolts to prevent oil seepage past the bolt threads. Apply High Strength (Dodge LD or GM) or High Temp Threadlocker (Dodge HD) to the mainshaft Nut. See my TM1003 NV4500 Shop Manual or V1003DVD NV4500 Overhaul Video for more information.

Tech Note 6: NV4500 Tools
Need Torque Specs or Rebuild procedures? Order my 116 page, full color illustrated TM1003 NV4500 Rebuild Manual.

You will need some special tools to correctly service your NV4500 Transmission. The chart below lists our current NV4500 Special Tools for popular models.

Applications
Dodge and Ram:
All with New Venture NV4500HD Series Transmissions (NV4500HD is used with Diesel and V10 only): 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005