QU10040 1992-1996 NV4500 Long Reverse Idler Shaft

QU10040 1992-1996 NV4500 Long Reverse Idler Shaft is accurately machined for precise fit and long bearing life. QU10040 shaft is used on early model New Venture NV4500 transmissions with the 5.61-1 or 6.34-1 reverse ratios through the 1996 model year. Approximate length is 4-3/8". Use with QU10033 Gear. USA Made.

Need More Info? Use the handy Links below to access over 40 years of Dan's product and vehicle specific Tech Notes to easily get the information you need for your vehicle's repair, maintenance, or upgrade project!

Dan the Gear Man® Tech Notes:
Specs
Early and Late Reverse
Common Causes of Failures
NV4500 Tools
Matching Parts
Applications

Tech Note 1: Specs
QU10040 is a precision ground, hardened steel shaft. The approximate dimensions are 63/64" (25mm) diameter x 4-3/4" long. QU10040 acts as inner bearing race for the reverse idler gear bearings.

Tech Note 2: Early and Late Reverse
1996 and earlier Early NV4500 transmissions utilized a two-plane reverse with either 5.61:1 or 6.34:1 Reverse Gear ratios. With a two-plane reverse, the front half of the wide reverse idler gear receives power from the countershaft and it uses the rear half to transfer power to the large diameter mainshaft reverse gear. The 5.04 ratio Single-plane reverse was introduced for 1997 model year trucks. The power transfer is inline between the countershaft, narrow reverse idler gear, and small diameter mainshaft reverse gear. The reverse idler gears, reverse idler shafts, countershafts, reverse gears, and transmission cases are not interchangeable for the two types of reverse gear systems.

Tech Note 3: Common Causes of Failures
NV4500 Reverse Idler Shaft failures are rare. Wear on the shaft bearing surface wear is almost always caused by operating the transmission with incorrect or contaminated oil. The reverse idler gear is in constant contact with the countershaft so it is rotating any time the input shaft is turning. Crud in dirty oil can quickly damage the small needle rollers that ride on the idler shaft. Installing a manual transmission filter kit can help rid your transmission of magnetic and non-magnetic debris and thereby reducing the chance of premature transmission failure.

Tech Note 4: 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.

Tech Note 5: Matching Parts
Matching Parts for QU10040 Reverse Idler Shaft:
QU10033 Reverse Idler Gear
QU10018 Reverse Idler Gear Bearing (Uses 2)
QU10121 Reverse Idler Gear Bearing Spacer
QK1101 Reverse Idler Gear Thrust Washer Set
QU10073 39 Tooth Non-Synchronized Mainshaft Reverse Gear for GM
QU10171 39 Tooth Synchronized Mainshaft Reverse Gear for Dodge
QU10090 Modular Countershaft for 1992-1994 GM, 1992-1993 Dodge
QU10078 One Piece Countershaft for 1992-1996 Dodge, 1995-1996 GM
NV4500E 1996 GM and 1994-1996 Dodge Transmission Case
NV4500GME 1992-1995 GM Transmission Case
QU90020 NV4500 Oil
QU90003 Anaerobic Sealant
QU90006 3.35 oz Ultra Black RTV Sealant
QU90005 0.5 oz Ultra Black RTV Sealant
S24200 6ml Medium Strength Blue Threadlocker
S9978 1 gram Medium Strength Blue Threadlocker
S9979 1 gram High Strength Red Threadlocker
S24026 High Temperature Threadlocker for Mainshaft Nut
TM1003 NV4500 Shop Manual
V1003DVD NV4500 Overhaul Video
Chevy & GMC Shop Manuals
Dodge & Ram Shop Manuals

Applications:

Chevy and GMC:
New Venture NV4500 5 Speed Manual Transmission: 1992, 1993, 1994, 1995, 1996

Dodge and Ram:
D and W Series with Gas Engines and New Venture NV4500 5 Speed Manual Transmission: 1992, 1993
Ram 2500, Ram 3500 with Manual Transmission: 1994, 1995, 1996