What do I need to do before driving this thing? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

krue · 03-16-2005, 12:48 AM

I have a 72 blazer 4x4 that has sat for a long time. I want to at least change fluid in both diff's, remove covers and inspect (and see what ratio). I also need new seals for the hubs (had to remove them to load it on the trailer.) What else should I check? I plan on rebuilding the brakes before driving it.

Hoods69BadBowTie · 03-16-2005, 03:07 AM

Make sure all your turn signals and lights work. I would do an oil change if it has been sitting for along time. Check tranny and transfer case fluid if possible.
-Later

krue · 03-16-2005, 03:14 AM

My brother changed the oil and put a tune up on it trying to get it to crank, so I'm covered on that. What kind of oil does the tranny (3 speed) and xfer case (no clue) take. I assume the differentials get 90w.

**JIMs70GMC** · 03-16-2005, 07:43 AM

put 90w in them also.

GMC71k20 · 03-17-2005, 01:06 AM

check all fluids, and best bet is too take an easy maiden voyage in a safe area to find the problems. i found out i had bad brakes for the first time at a busy intersection with a day care center crossing the street

krue · 03-17-2005, 02:59 AM

I have 5 acres to test drive on, hopefully everything will work.

Hoods69BadBowTie · 03-17-2005, 01:46 PM

Use 80-90 Weight gear oil in the transfer case. I used some kind of ATF in the transmission. Can not remember exactly what it was though.
-Later

vtblazer · 03-18-2005, 06:54 PM

Another thing to do is to get on your creeper and with an assortment of wrenches go front to back and tighten EVERYTHING you can possibley get to.
You'll be surprised on how many turns will be needed.
Grease the u-joints and slip joint too.
Checking the front wheel bearings isn't a bad idea either. Just jack up one side at a time and rock the wheel top and bottom.
Have fun.

Americanrider · 03-22-2005, 02:38 AM

Might be a good idea to purge the gas lines w/ compressed air and get a cheap in-line gas filter. You never know what will crawl out from the bottom of your tank and gunk up your carb. Also take the time to flush the cooling system a take a peak at your themostat, it may have rusted shut.

03-16-2005, 12:48 AM	#1
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	What do I need to do before driving this thing? I have a 72 blazer 4x4 that has sat for a long time. I want to at least change fluid in both diff's, remove covers and inspect (and see what ratio). I also need new seals for the hubs (had to remove them to load it on the trailer.) What else should I check? I plan on rebuilding the brakes before driving it. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

03-16-2005, 03:07 AM	#2
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	Make sure all your turn signals and lights work. I would do an oil change if it has been sitting for along time. Check tranny and transfer case fluid if possible. -Later __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!

03-16-2005, 03:14 AM	#3
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	My brother changed the oil and put a tune up on it trying to get it to crank, so I'm covered on that. What kind of oil does the tranny (3 speed) and xfer case (no clue) take. I assume the differentials get 90w. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

03-16-2005, 07:43 AM	#4
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	put 90w in them also. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

03-17-2005, 02:59 AM	#6
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	I have 5 acres to test drive on, hopefully everything will work. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

03-17-2005, 01:06 AM	#5
GMC71k20 Registered User Join Date: Aug 2002 Location: mass Posts: 1,277	check all fluids, and best bet is too take an easy maiden voyage in a safe area to find the problems. i found out i had bad brakes for the first time at a busy intersection with a day care center crossing the street

03-17-2005, 01:46 PM	#7
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	Use 80-90 Weight gear oil in the transfer case. I used some kind of ATF in the transmission. Can not remember exactly what it was though. -Later __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!

03-18-2005, 06:54 PM	#8
vtblazer Registered User Join Date: Oct 2003 Location: Central Vermont Posts: 8,537	Another thing to do is to get on your creeper and with an assortment of wrenches go front to back and tighten EVERYTHING you can possibley get to. You'll be surprised on how many turns will be needed. Grease the u-joints and slip joint too. Checking the front wheel bearings isn't a bad idea either. Just jack up one side at a time and rock the wheel top and bottom. Have fun.

03-22-2005, 02:38 AM	#9
Americanrider Registered User Join Date: Dec 2004 Location: NW, WA. Posts: 1,421	Might be a good idea to purge the gas lines w/ compressed air and get a cheap in-line gas filter. You never know what will crawl out from the bottom of your tank and gunk up your carb. Also take the time to flush the cooling system a take a peak at your themostat, it may have rusted shut.



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