The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > All 4x4 Tech & Off Roading

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 12-25-2006, 10:38 PM   #1
TP from Cntl PA
Registered User
 
TP from Cntl PA's Avatar
 
Join Date: Apr 2003
Location: Central PA....In the Berg of Nisbet
Posts: 790
2 Hi to 4 Hi and back is hard to shift? Why?

I've only used my 4WD on my K acouple times now, both times I just needed to kick it into 4x4 to get out of the yard(AKA 4Hi)...........Anyhow, it shifts into 4Hi ok, you run it to where you need to go, then try to shift back out to 2 Hi, and it is next to impossible. Had to unlock the hubs to get it today, as it was like the front end put everything into a bind. Is this normal for these to do this? I never had anything 4x4 that was this old, only 4x2's and I sorta miss being able to kick it in and out with ease.
__________________
'72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck
'71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel!
'69 3500 GMC 305V-6/4spd, Still under reconstruction..........

Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!!
TP from Cntl PA is offline   Reply With Quote
Old 12-26-2006, 01:36 AM   #2
72 CustomCamper
huh ???
 
72 CustomCamper's Avatar
 
Join Date: Nov 2002
Location: Fredericksburg,Va.
Posts: 3,369
Re: 2 Hi to 4 Hi and back is hard to shift? Why?

Next time try shifting it back into 2x on the fly. While sitting still the front end can put enought strain on it to not allow it to shift easy...
__________________
90 Blazer Silverado 350w/ 700R4 and 32" Kelly's

"I am a bomb technician. If you see me running try to keep up!"
72 CustomCamper is offline   Reply With Quote
Old 12-26-2006, 08:08 AM   #3
TP from Cntl PA
Registered User
 
TP from Cntl PA's Avatar
 
Join Date: Apr 2003
Location: Central PA....In the Berg of Nisbet
Posts: 790
Re: 2 Hi to 4 Hi and back is hard to shift? Why?

Quote:
Originally Posted by 72 CustomCamper View Post
Next time try shifting it back into 2x on the fly. While sitting still the front end can put enought strain on it to not allow it to shift easy...
Tried it, you can't move the stick.............
__________________
'72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck
'71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel!
'69 3500 GMC 305V-6/4spd, Still under reconstruction..........

Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!!
TP from Cntl PA is offline   Reply With Quote
Old 12-26-2006, 09:17 AM   #4
Troy-Built
Registered User
 
Join Date: Mar 2003
Location: Perrysville Indiana
Posts: 258
Re: 2 Hi to 4 Hi and back is hard to shift? Why?

If it is not used very often it can be tough. Make sure there is no strain on the drivetrain when you shift back. Get up to about 20 and level off on the gas pedal like coasting then try it. You may need to grease the shafts on the transfer case. Also, if you have a 205 transfer case there is a grease zert on the pivot shaft of the shifter. A 205 has 2 shafts and a pivot bar connecting them together coming out of the upper front of the transfer case.
__________________
69 Chevelle SS 375/396 TKO 600
71 Suburban 3/4 4x4 402 5-speed (project)
68 chevy C10 shortbed 327 5-speed (project)
72 Blazer 4x4 400 4-speed (wifes project)
Numerous 67-72 parts trucks
Troy-Built is offline   Reply With Quote
Old 12-26-2006, 12:33 PM   #5
TP from Cntl PA
Registered User
 
TP from Cntl PA's Avatar
 
Join Date: Apr 2003
Location: Central PA....In the Berg of Nisbet
Posts: 790
Re: 2 Hi to 4 Hi and back is hard to shift? Why?

Quote:
Originally Posted by Troy-Built View Post
If it is not used very often it can be tough. Make sure there is no strain on the drivetrain when you shift back. Get up to about 20 and level off on the gas pedal like coasting then try it. You may need to grease the shafts on the transfer case. Also, if you have a 205 transfer case there is a grease zert on the pivot shaft of the shifter. A 205 has 2 shafts and a pivot bar connecting them together coming out of the upper front of the transfer case.
Did grease the shafts.............Right after I bought it it shifted very hard, I mean it took two hands to shift it. I found that the pivot bolt was seized to the shaft, also wasn't a grease fitting on this one. So we freed it up, and I put a fitting in the shifter, also lubed all pivot points in the area. Shifts nice into 4Hi, just hard to get back out into 2wd. I'll play some more with it, maybe I am just to used to the newer Fords.
__________________
'72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck
'71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel!
'69 3500 GMC 305V-6/4spd, Still under reconstruction..........

Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!!
TP from Cntl PA is offline   Reply With Quote
Old 12-26-2006, 03:40 PM   #6
scotto0609
Junior Member
 
Join Date: Nov 2005
Location: new york
Posts: 226
Re: 2 Hi to 4 Hi and back is hard to shift? Why?

Before shifting out of 4hi or low try putting it in idling in reverse for about 10 or so feet. That should unload any binding in the drivetrain.
scotto0609 is offline   Reply With Quote
Old 12-28-2006, 07:19 PM   #7
Zoomad75
K5Camper
 
Zoomad75's Avatar
 
Join Date: Mar 2004
Location: Pueblo, CO
Posts: 1,513
Re: 2 Hi to 4 Hi and back is hard to shift? Why?

My 205 shifts from 4hi back to 2hi pretty easy. Most of the time. if it don't I just back up a few feet and try again.
__________________
Rob Z.
1975 K5 350/465/205/D44/12b 4" lift on 35's- RIP
1991 K5 8.1L/NV4500/241/D44/14b FWC Camper
Zoomad75 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:07 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com