NVG 261 Variations
The SHD model shares many of the same components, but the increased torque capacity of the SHD requires a double row input bearing and larger diameter rear output shaft, rear output shaft bearing higher capacity, larger rear seal and case halves machined differently.
The NVG 261 has some internal changes for this model year. The oil pump on the LD and HD variations is now the same as the SHD variation. Along with the oil pump change, the oil pump suction pipe and screen were also changed. The NVG 261 now uses a different rear output shaft. The pilot bearing and cup plug in the input gear has been changed to a cup style bearing.
The transfer case is shifted by a remote mounted shift lever, which is connected by linkage to the shift lever (9) on the shift detent lever shaft. The shift detent lever shaft rotates the cam shaped shift detent lever (10) and moves the high/low range shift fork (11) or the 2/4 wheel drive mode shift fork (8), Depending on the selected mode or range, the shift forks move either the high/low range sleeve (4) for the high/low range planetary assembly (3) or the synchronizer sleeve (6) for the 2/4 wheel drive mode. In the 2WD mode, the engine power from the transmission (1) is delivered to the input shaft (2). The engagement teeth on the inside of the input shaft (2) are engaged to the outer teeth on the high/low range sleeve (4). The high/low range sleeve (4) is slipped splined to the rear output shaft (5). The engine power flows from the high/low range sleeve (4) to the rear output shaft (5) and is delivered to the rear propeller shaft (7).