Transfer case skipping
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Junior User
Joined: Apr 2008
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Transfer case skipping
I've got a 79 bronco and the transfer case is skipping sounds like the chain is tearing the teeth off the gears.
Is this an np205?
Any recommendations for a replacement, stronger, gear driven, lower gearing?
Is this an np205?
Any recommendations for a replacement, stronger, gear driven, lower gearing?
Post Fiend
Joined: Mar 2005
Posts: 8,542
Likes: 5
From: Louisiana
Could be what Nick said, or possibly the linkage isn't putting it all the way in 4 lo and it's not catching/grinding gears.
The NP203 and NP205 both came in 78 79 Broncos.
NP203 is a huge 300 lb full time chain driven transfer case with adjustable linkage and 2.01:1 Lo range. It also has a range box with is basically like a open differential with spider gears to split the power between front and rear axles. It was a pretty popular thing to convert them to part time 4wd, but some kits were better than others....
The NP205 is gear driven and basically bullit proof with 1.96:1 Lo range.
Pic of NP205:
Pic of NP203:
The NP203 and NP205 both came in 78 79 Broncos.
NP203 is a huge 300 lb full time chain driven transfer case with adjustable linkage and 2.01:1 Lo range. It also has a range box with is basically like a open differential with spider gears to split the power between front and rear axles. It was a pretty popular thing to convert them to part time 4wd, but some kits were better than others....
The NP205 is gear driven and basically bullit proof with 1.96:1 Lo range.
Pic of NP205:
Pic of NP203:
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Junior User
Joined: Apr 2008
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Thanks for the pics and info but I'm in Dallas and the truck is in Phoenix I haven't been under the truck in two years so can't remember what it looked like. I'm trying to decide if it's worth shipping it to texas.
Post Fiend
Joined: Mar 2005
Posts: 8,542
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From: Louisiana
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Elder User
Joined: Mar 2004
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From: clinton iowa
if its a popping type noise on a 203 the chain or gears are wore and its jumping the teeth ,mine did this and i got rid of it
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Ok I remember, 4 lo- n -2 hi- 4 hi, cause I was disappointed that it didn't have 2 lo like my landcruiser used to. Thanks MBBford, now at least I know it's an np205.
Ok my memory is coming back a bit, it would skip and bang under a hard load, ie:deep mud or heavy foot on a steep incline, but worked fine under normal loads. Also shift lever never popped out of gear, just lighten the load and it was good to go.
I'm assuming that quadzjr. is correct that the driveshaft slip joint is skipping. Does this mean my driveshaft is too short or what?
Ok my memory is coming back a bit, it would skip and bang under a hard load, ie:deep mud or heavy foot on a steep incline, but worked fine under normal loads. Also shift lever never popped out of gear, just lighten the load and it was good to go.
I'm assuming that quadzjr. is correct that the driveshaft slip joint is skipping. Does this mean my driveshaft is too short or what?
just another Rockwell looser
Joined: Feb 2003
Posts: 4,042
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From: Cocoa, FL
Ok I remember, 4 lo- n -2 hi- 4 hi, cause I was disappointed that it didn't have 2 lo like my landcruiser used to. Thanks MBBford, now at least I know it's an np205.
Ok my memory is coming back a bit, it would skip and bang under a hard load, ie:deep mud or heavy foot on a steep incline, but worked fine under normal loads. Also shift lever never popped out of gear, just lighten the load and it was good to go.
I'm assuming that quadzjr. is correct that the driveshaft slip joint is skipping. Does this mean my driveshaft is too short or what?
Ok my memory is coming back a bit, it would skip and bang under a hard load, ie:deep mud or heavy foot on a steep incline, but worked fine under normal loads. Also shift lever never popped out of gear, just lighten the load and it was good to go.
I'm assuming that quadzjr. is correct that the driveshaft slip joint is skipping. Does this mean my driveshaft is too short or what?
if its the dshaft, you will be able to move it back in forth and get hella play.......it was kinda a reminder for me if i ever left my hubs locked in on the road.......def. some vibration issues.....at high speeds.
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