A Tale of a T-Case
The BorgWarner 44-05 and 44-06 transfer case used in Ford trucks is known to suffer from case-wear issues. Because the case halves are magnesium they tend to wear in the pocket that supports the steel shift rail (Figure 1) that holds the shift and mode forks.
The Magna Powertrain MP3023/3024 NQH
In last month’s article we discussed two of the three new models of transfer cases from Magna Powertrain, the MP1222/1225/1226 NQG and the MP1625/1626 NQF. This month we will discuss the operation and mechanical functions unique to the MP3023/3024 NQH. Figure 1 breaks down the identification code for the MP3023. These are active transfer cases (ATC) with sophisticated advanced electronics.
The BorgWarner 4473: Unlocking the Mystery
Through the BorgWarner 4473 transfer case, which is full-time all-wheel drive, there is a 35%/65% constant torque split front to rear. The 4473 is a relatively simple transfer case that uses a viscous coupling to control a planetary differential to split the torque. The planetary uses straight-cut gears for the planet pinions and the sun and annulus gears, which means that there is little or no thrust load on the internal components.
Identifying Aisin Manual Transmissions and Transfer Cases
One of the major problems associated with buying and selling units and parts in our industry is the need to properly identify the unit you are working on. This article is devoted to identifying current-production models of manual transmissions and transfer cases produced by Aisin AI, with the hope of making it easier for you to obtain parts in the aftermarket. Past production is not listed but includes the familiar AX5, AX15 and R151 Toyota transmissions.
BorgWarner’s 4484 Transfer Case – Heart of the Hummer
In the current political and economic climate, the GM Hummer H2 is no longer “politically correct.” However, a lot of them have been produced and sold, and I suspect that more will follow.
Trail Tested: The NVG 245 Transfer Case
Jeep is the originator of four-wheel-drive vehicles, and even though the brand has been owned by numerous corporations over the years, it is still the centerpiece of four-wheel activity. The top-of-the-line Jeep model is the Grand Cherokee – or WK series, in Jeep speak.
The Fine Points of the BorgWarner 4411 Transfer Case
One of the best-selling vehicles produced by Ford Motor Co. is the Ford Explorer/Mercury Mountaineer SUV. These vehicles started production using the BorgWarner 4405 transfer case and had a huge production run.
Generations of Transfer Cases: The New Venture 244 Gen II
With the introduction of the Dodge Durango to Chrysler’s SUV models came the 244 transfer case. From 2001 to 2003 the 244 transfer case was an evolution of the NV 242, which was a full-time/part-time unit.
Diagnosis of Electronic ‘Active’ Transfer Cases
This is the fourth article in a series devoted to diagnosis of manual transmissions and transfer cases. Electronic “active” transfer cases cause 70% of the tech calls we receive.
Wear in Magnesium Transfer-Case Housings
One OEM supplier estimates that 2 million transfer-case housings have been made from magnesium1. In the aftermarket, these parts have been working their way into transmission shops at an ever-increasing rate. The questions I discuss here are why magnesium transfer-case housings wear so dramatically while their similar aluminum counterparts do not, and how this affects repair choices.
Repairing the New Venture 261 & 263 Transfer Cases
For the 1999 model year, GM introduced the new Chevrolet Silverado and GMC Sierra models of pickup trucks. As part of the upgrade of these models, New Venture Gear designed a new series of transfer cases, the NV 261 and 263. These transfer cases are basically a heavier-duty version of the NV 241 transfer cases used before 1999.
A Look at the New Venture 244 Gen II Transfer Case
We have become used to a never-ending stream of new technology and the introduction of many new models of transmissions and transfer cases. I remember the days when we had only about 20 transmissions to worry about and roughly a half dozen transfer cases; now, you need a computer to keep track of all the different units.
