6.5 turbo diesel transfer case
#1
06-10-2009, 10:16 AM
6.5 turbo diesel transfer case
I have a '98 chevy 6.5 diesel with a 5 speed transmission. When i let off the throttle and stop sending power through my driveline the transfer case kicks out of gear. If i push the throttle again it'll pause for a second then kick back into gear. I asked a mechanic and he believes it's the shift fork inside but I dont want to pull the transfer case until i know if that is it because i still have to drive to class daily.
thank you,
Zach West
thank you,
Zach West
#9
06-15-2009, 02:39 PM
MODEL 241
The Model 241 transfer case is a chain-driven, four-position unit that provides the following features:
Four-wheel drive high and low ranges
A two-wheel high range
A neutral position
The Model 241 is a part-time four-wheel drive unit.
Torque input in four-wheel high and low ranges is undifferentiated.
The range positions are selected by a floor-mounted gearshift lever.
The Model 241 has a two-piece aluminum case which contains the following components:
A front output shaft
A rear output shaft
Two drive sprockets
A shift mechanism
A planetary gear assembly
The drive chain connects and operates the drive sprockets.
The planetary assembly provides the four-wheel drive low range when engaged. The planetary assembly contains the following components:
A six-pinion carrier
An annulus gear
The gear-reduction ration in the four-wheel drive low range is 2.72:1.
IDENTIFICATION
An identification tag is attached to the rear half of the transfer case. The tag provides the following information:
The transfer case model number
The low range reduction ratio
An assembly number
The information on this tag is necessary for servicing this transfer case. If the tag is removed or becomes dislodged during service operations, keep the identification tag with the unit.
POWER FLOW
Input torque is transmitted to the transfer case gear train through the transfer case input gear. This transfer occurs in all drive range positions.
Torque transmission in 2HI range occurs as follows:
Torque is transmitted from the input gear to the range shift hub and the mainshaft.
Torque flow continues through the slip yoke. (The slip yoke is splined to the mainshaft.)
Torque flow continues to the rear propeller shaft and axle.
In the 2HI range, the mode synchronizer remains in the neutral position and does not lock the drive sprocket to the mainshaft. As a result, torque is not transferred to the driven sprocket.
Torque transmission from the input gear to the mainshaft is the same in the 4HI range. However, in the 4HI position, the mode synchronizer sleeve is shifted into engagement with the clutch teeth of the drive sprocket. This locks the drive sprocket to the mainshaft through the synchronizer. The drive chain then transmits the torque through the drive sprocket to the driven sprocket. Since the front output shaft is splined to the driven sprocket, torque flows through the output shaft to the front propeller shaft and axle. This results in high range four-wheel drive.
In the 41-0 range, the range shift hub is shifted into engagement with the planetary carrier. This causes the input gear to rotate the planetary pinions inside the annulus gear. The planetary carrier, range shift hub, and mainshaft rotate at a gear reduction ratio of 2.72:1.
The Model 243 is a part-time four-wheel drive system.
The Model 243 will allow the driver to select between the following ranges:
4-wheel drive low range (4LO)
4-wheel drive high range (4HI)
2-wheel drive high range (2HI) Three electric transfer case push button selector switches enable the driver to select the range position. The switches are located in front of the driver on the console. The control switches send electronic requests to the electronic Transfer Case Control Module (TCCM) . The TCCM positions the transfer case accordingly.
The two-piece aluminum case of the Model 243 contains the following components:
The front output shaft
The rear output shaft
Two drive sprockets
The shift mechanism
The planetary gear assembly.
The drive chain connects and operates the drive sprockets.
The planetary assembly consists of the following components:
A six-pinion carrier
An annulus gear.
The planetary assembly provides the four-wheel drive low range when engaged.
The gear reduction ratio is 2.72:1 in this range.
IDENTIFICATION
An identification tag is attached to the rear half of the transfer case. The tag provides the following information:
The transfer case model number
The low range reduction ratio
An assembly number
The information on this tag is necessary for servicing this transfer case. If the tag is removed or becomes dislodged during service operations, keep the identification tag with the unit.
POWER FLOW
Input torque is transmitted to the transfer case gear train through the transfer case input gear. This transfer occurs in all drive range positions.
Torque transmission in 2HI range occurs as follows:
Torque is transmitted from the input gear to the range shift hub and the mainshaft.
Torque flow continues through the slip yoke. (The slip yoke is splined to the mainshaft.)
Torque flow continues to the rear propeller shaft and axle.
In the 2HI range, the mode synchronizer remains in the neutral position and does not lock the drive sprocket to the mainshaft. As a result, torque is not transferred to the driven sprocket.
Torque transmission from the input gear to the mainshaft is the same in the 4HI range. However, in the 4HI position, the mode synchronizer sleeve is shifted into engagement with the clutch teeth of the drive sprocket. This locks the drive sprocket to the mainshaft through the synchronizer. The drive chain then transmits the torque through the drive sprocket to the driven sprocket. Since the front output shaft is splined to the driven sprocket, torque flows through the output shaft to the front propeller shaft and axle. This results in high range four-wheel drive.
In the 4LO range, the range shift hub is shifted into engagement with the planetary carrier. This causes the input gear to rotate the planetary pinions inside the annulus gear. The planetary carrier, range shift hub, and mainshaft rotate at a gear reduction ratio of 2.72:1.
The Model 241 transfer case is a chain-driven, four-position unit that provides the following features:
Four-wheel drive high and low ranges
A two-wheel high range
A neutral position
The Model 241 is a part-time four-wheel drive unit.
Torque input in four-wheel high and low ranges is undifferentiated.
The range positions are selected by a floor-mounted gearshift lever.
The Model 241 has a two-piece aluminum case which contains the following components:
A front output shaft
A rear output shaft
Two drive sprockets
A shift mechanism
A planetary gear assembly
The drive chain connects and operates the drive sprockets.
The planetary assembly provides the four-wheel drive low range when engaged. The planetary assembly contains the following components:
A six-pinion carrier
An annulus gear
The gear-reduction ration in the four-wheel drive low range is 2.72:1.
IDENTIFICATION
An identification tag is attached to the rear half of the transfer case. The tag provides the following information:
The transfer case model number
The low range reduction ratio
An assembly number
The information on this tag is necessary for servicing this transfer case. If the tag is removed or becomes dislodged during service operations, keep the identification tag with the unit.
POWER FLOW
Input torque is transmitted to the transfer case gear train through the transfer case input gear. This transfer occurs in all drive range positions.
Torque transmission in 2HI range occurs as follows:
Torque is transmitted from the input gear to the range shift hub and the mainshaft.
Torque flow continues through the slip yoke. (The slip yoke is splined to the mainshaft.)
Torque flow continues to the rear propeller shaft and axle.
In the 2HI range, the mode synchronizer remains in the neutral position and does not lock the drive sprocket to the mainshaft. As a result, torque is not transferred to the driven sprocket.
Torque transmission from the input gear to the mainshaft is the same in the 4HI range. However, in the 4HI position, the mode synchronizer sleeve is shifted into engagement with the clutch teeth of the drive sprocket. This locks the drive sprocket to the mainshaft through the synchronizer. The drive chain then transmits the torque through the drive sprocket to the driven sprocket. Since the front output shaft is splined to the driven sprocket, torque flows through the output shaft to the front propeller shaft and axle. This results in high range four-wheel drive.
In the 41-0 range, the range shift hub is shifted into engagement with the planetary carrier. This causes the input gear to rotate the planetary pinions inside the annulus gear. The planetary carrier, range shift hub, and mainshaft rotate at a gear reduction ratio of 2.72:1.
The Model 243 is a part-time four-wheel drive system.
The Model 243 will allow the driver to select between the following ranges:
4-wheel drive low range (4LO)
4-wheel drive high range (4HI)
2-wheel drive high range (2HI) Three electric transfer case push button selector switches enable the driver to select the range position. The switches are located in front of the driver on the console. The control switches send electronic requests to the electronic Transfer Case Control Module (TCCM) . The TCCM positions the transfer case accordingly.
The two-piece aluminum case of the Model 243 contains the following components:
The front output shaft
The rear output shaft
Two drive sprockets
The shift mechanism
The planetary gear assembly.
The drive chain connects and operates the drive sprockets.
The planetary assembly consists of the following components:
A six-pinion carrier
An annulus gear.
The planetary assembly provides the four-wheel drive low range when engaged.
The gear reduction ratio is 2.72:1 in this range.
IDENTIFICATION
An identification tag is attached to the rear half of the transfer case. The tag provides the following information:
The transfer case model number
The low range reduction ratio
An assembly number
The information on this tag is necessary for servicing this transfer case. If the tag is removed or becomes dislodged during service operations, keep the identification tag with the unit.
POWER FLOW
Input torque is transmitted to the transfer case gear train through the transfer case input gear. This transfer occurs in all drive range positions.
Torque transmission in 2HI range occurs as follows:
Torque is transmitted from the input gear to the range shift hub and the mainshaft.
Torque flow continues through the slip yoke. (The slip yoke is splined to the mainshaft.)
Torque flow continues to the rear propeller shaft and axle.
In the 2HI range, the mode synchronizer remains in the neutral position and does not lock the drive sprocket to the mainshaft. As a result, torque is not transferred to the driven sprocket.
Torque transmission from the input gear to the mainshaft is the same in the 4HI range. However, in the 4HI position, the mode synchronizer sleeve is shifted into engagement with the clutch teeth of the drive sprocket. This locks the drive sprocket to the mainshaft through the synchronizer. The drive chain then transmits the torque through the drive sprocket to the driven sprocket. Since the front output shaft is splined to the driven sprocket, torque flows through the output shaft to the front propeller shaft and axle. This results in high range four-wheel drive.
In the 4LO range, the range shift hub is shifted into engagement with the planetary carrier. This causes the input gear to rotate the planetary pinions inside the annulus gear. The planetary carrier, range shift hub, and mainshaft rotate at a gear reduction ratio of 2.72:1.
#10
06-15-2009, 02:40 PM
The Bargainers 4401 transfer case is a chain driven, four-position unit. it provides the following ranges:
A four-wheel drive high range
A four-wheel drive low range
A two-wheel high range
A neutral position
The BW4401 is a part-time four-wheel drive unit.
Torque input in four-wheel drive is undifferentiated.
The range positions are selected by a floor-mounted gear shift lever.
The unit has a gear reduction ratio of 2.69:1.
The BW4401 has a three piece aluminum case. The case has provisions for a power take off (PTO). The BW4401 uses an electric synchronizer when shifting into a four-wheel drive.
IDENTIFICATION
An aluminum identification tag is attached to the rear half of the transfer case, under the self-tapping extension housing bolts. The tag provides the following information:
The transfer case model number
The serial number
The build date
The information on this tag is necessary for servicing the transfer case. If the tag is removed or becomes dislodged during service operations, keep the identification tag with the unit.
POWER FLOW
Input torque is transmitted to the transfer case gear train through the transfer case input gear. This transfer occurs in all drive range positions. Torque transmission in 2HI range occurs as follows:
Torque is transmitted from the input gear to the range shift hub and the mainshaft.
Torque flow continues through the slip/fixed yoke. (The slip yoke is splined to the mainshaft.)
Torque flow continues to the rear propeller shaft and axle.
In the 2HI range, the mode synchronizer remains in the neutral position and does not lock the drive sprocket to the mainshaft. As a result, torque is not transferred to the driven sprocket.
Torque transmission from the input gear to the mainshaft is the same in the 4HI range. However, in the 4HI position, the mode synchronizer sleeve is shifted into engagement with the clutch hub teeth on the mainshaft. This locks the drive sprocket to the mainshaft through the synchronizer assembly. The drive chain then transmits the torque through the drive sprocket. Since the front output shaft is splined to the driven sprocket, torque flows through the output shaft to the front propeller shaft and axle.
This results in high range four-wheel drive.
In the 4L0 range, the range shift hub is shifted into engagement with the planetary carrier. This causes the input gear to rotate the planetary pinions inside the fixed annulus gear. The planetary carrier, range shift hub, and mainshaft rotate at a gear reduction ratio of 2.69:1.
BW4470 TRANSFER CASE
The Borg Warner 4470 transfer case is a chain-driven, four-position unit providing the following features:
A four-wheel drive high range (4HI)
A four-wheel drive low range (4LO)
A two-wheel high range (2HI)
A neutral position
The BW4470 is a part-time four-wheel drive unit.
Torque input in four-wheel drive is undifferentiated.
The range positions are selected by a floor-mounted gear shift lever.
The unit has a gear reduction ratio of 2.69:1.
The BW4470 has a three-piece aluminum case with provisions for a Power Take Off (PTO) and uses an electric synchronizer when shifting into four-wheel drive.
IDENTIFICATION
The identification tag is an aluminum tag. It is attached under the self-tapping extension housing bolts. This tag provides the following information:
The transfer case model number
The serial number
The build date
This information on this tag is necessary for servicing the transfer case.
If the tag is removed or becomes dislodged during service operations, keep the identification tag with the unit.
POWER FLOW
The input torque is transmitted to the transfer case gear train through the transfer case input gear. (This occurs in all drive range positions.)
Torque flows along the following path in the 2HI range:
Torque flows from the input gear to the range shift hub and the mainshaft.
Torque flow continues through the slip/fixed yoke that is splined to the mainshaft.
Torque flow continues to the rear propeller shaft and the axle.
In the 2HI range, the mode synchronizer remains in the neutral position. As a result, torque is not transferred to the driven sprocket.
In the 4HI range, input torque from the input gear is transmitted to the mainshaft in the same manner as in the 2HI range.
However, in the 4HI position, the mode synchronizer sleeve is shifted into engagement with the clutch hub teeth on the mainshaft. This locks the drive sprocket to the main shaft through the synchronizer assembly.
The connecting drive chain transmits torque through the drive sprocket. Torque then flows along the following path:
Through the front output shaft/driven sprocket.
To the front propeller shaft and axle.
Torque flow along this path results in the high range four-wheel drive.
The path of torque in the 4LO range is similar to the path of torque in the 4HI range. However, in the 4LO range, the range hub is shifted into engagement with the planetary carrier. This engagement causes the following events:
The input gear rotates the planetary pinions inside the annulus gear.
The planetary carrier, the range shift hub, and the mainshaft rotate at a gear reduction of 2.69:1.
A four-wheel drive high range
A four-wheel drive low range
A two-wheel high range
A neutral position
The BW4401 is a part-time four-wheel drive unit.
Torque input in four-wheel drive is undifferentiated.
The range positions are selected by a floor-mounted gear shift lever.
The unit has a gear reduction ratio of 2.69:1.
The BW4401 has a three piece aluminum case. The case has provisions for a power take off (PTO). The BW4401 uses an electric synchronizer when shifting into a four-wheel drive.
IDENTIFICATION
An aluminum identification tag is attached to the rear half of the transfer case, under the self-tapping extension housing bolts. The tag provides the following information:
The transfer case model number
The serial number
The build date
The information on this tag is necessary for servicing the transfer case. If the tag is removed or becomes dislodged during service operations, keep the identification tag with the unit.
POWER FLOW
Input torque is transmitted to the transfer case gear train through the transfer case input gear. This transfer occurs in all drive range positions. Torque transmission in 2HI range occurs as follows:
Torque is transmitted from the input gear to the range shift hub and the mainshaft.
Torque flow continues through the slip/fixed yoke. (The slip yoke is splined to the mainshaft.)
Torque flow continues to the rear propeller shaft and axle.
In the 2HI range, the mode synchronizer remains in the neutral position and does not lock the drive sprocket to the mainshaft. As a result, torque is not transferred to the driven sprocket.
Torque transmission from the input gear to the mainshaft is the same in the 4HI range. However, in the 4HI position, the mode synchronizer sleeve is shifted into engagement with the clutch hub teeth on the mainshaft. This locks the drive sprocket to the mainshaft through the synchronizer assembly. The drive chain then transmits the torque through the drive sprocket. Since the front output shaft is splined to the driven sprocket, torque flows through the output shaft to the front propeller shaft and axle.
This results in high range four-wheel drive.
In the 4L0 range, the range shift hub is shifted into engagement with the planetary carrier. This causes the input gear to rotate the planetary pinions inside the fixed annulus gear. The planetary carrier, range shift hub, and mainshaft rotate at a gear reduction ratio of 2.69:1.
BW4470 TRANSFER CASE
The Borg Warner 4470 transfer case is a chain-driven, four-position unit providing the following features:
A four-wheel drive high range (4HI)
A four-wheel drive low range (4LO)
A two-wheel high range (2HI)
A neutral position
The BW4470 is a part-time four-wheel drive unit.
Torque input in four-wheel drive is undifferentiated.
The range positions are selected by a floor-mounted gear shift lever.
The unit has a gear reduction ratio of 2.69:1.
The BW4470 has a three-piece aluminum case with provisions for a Power Take Off (PTO) and uses an electric synchronizer when shifting into four-wheel drive.
IDENTIFICATION
The identification tag is an aluminum tag. It is attached under the self-tapping extension housing bolts. This tag provides the following information:
The transfer case model number
The serial number
The build date
This information on this tag is necessary for servicing the transfer case.
If the tag is removed or becomes dislodged during service operations, keep the identification tag with the unit.
POWER FLOW
The input torque is transmitted to the transfer case gear train through the transfer case input gear. (This occurs in all drive range positions.)
Torque flows along the following path in the 2HI range:
Torque flows from the input gear to the range shift hub and the mainshaft.
Torque flow continues through the slip/fixed yoke that is splined to the mainshaft.
Torque flow continues to the rear propeller shaft and the axle.
In the 2HI range, the mode synchronizer remains in the neutral position. As a result, torque is not transferred to the driven sprocket.
In the 4HI range, input torque from the input gear is transmitted to the mainshaft in the same manner as in the 2HI range.
However, in the 4HI position, the mode synchronizer sleeve is shifted into engagement with the clutch hub teeth on the mainshaft. This locks the drive sprocket to the main shaft through the synchronizer assembly.
The connecting drive chain transmits torque through the drive sprocket. Torque then flows along the following path:
Through the front output shaft/driven sprocket.
To the front propeller shaft and axle.
Torque flow along this path results in the high range four-wheel drive.
The path of torque in the 4LO range is similar to the path of torque in the 4HI range. However, in the 4LO range, the range hub is shifted into engagement with the planetary carrier. This engagement causes the following events:
The input gear rotates the planetary pinions inside the annulus gear.
The planetary carrier, the range shift hub, and the mainshaft rotate at a gear reduction of 2.69:1.
