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 > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board > 67-72 Chevrolet & GMC Pickups Projects and Builds

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-16-2020, 10:44 AM   #126
GerhardH
Senior Member and C-20 student
 
GerhardH's Avatar
 
Join Date: Aug 2017
Location: South Germany
Posts: 482
Re: My 1968 C-20 Golden Anniversary Project

Today I was trying to repair my ammeter, but lost. Maybe somebody can help!
The ammeter was showing nothing from the beginning as I bought the car. was studying all the information about them here in the forum (vettevet etc.) and today was starting to investigate.

1. I tried directly with a nearly empty battery connected to the gauge, great action on the pointer

2. Than I was doing the same far away on the fuses, same great result, than connected the fuses again (measured before ok) and measured directly on the ammeter. Both contacts showed plus, means connected.

3. My shunt (The battery charging wire) and the "Splice" are looking original.

So after reconnecting I saw that indeed the ammeter act, if I switch on the light with no running engine slightly to "D" discharge and if I start the engine slightly to "C" charge, but only 0.03" from middle (zero).

Ist this normal or what can be wrong?
Attached Images
     
__________________
Best regards GerhardH!

Members met: 68 short step, 68bowtie, 72c20customcamper, botmfedr1, C/10 King, Chevyland, cornerstore, dmjlambert, fun in dirt, GMan69, Ol Blue K20
1968 CHEVROLET C20 Custom Camper 50th Anniversary, Long bed (LB) 8', 327 V8, Air Condition (AC), Power Steering (PS), Power Brake (PB), Z62 Custom & Comfort Appearance, Turbo Hydramatic TH 400
http://67-72chevytrucks.com/vboard/s...d.php?t=760400

Last edited by GerhardH; 09-16-2020 at 10:52 AM.
GerhardH is offline   Reply With Quote
Old 09-16-2020, 11:48 AM   #127
Steeveedee
Senior Member
 
Steeveedee's Avatar
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 5,248
Re: My 1968 C-20 Golden Anniversary Project

I went and checked on my truck. With the engine off, turning on the headlights barely moves the needle. I know that the system works, because when I hook up a low battery it reads about half way up on the "C" side of the meter, which is about 30 Amps, as I have a 63 Amp alternator.
__________________
'70 Chevy 3/4T Longhorn CST 400/400/3.54 Custom Camper

If you keep your distance and say, "I see you"
You may not end up in the ICU
Steeveedee is offline   Reply With Quote
Old 09-16-2020, 03:29 PM   #128
tdangle
Senior Member
 
tdangle's Avatar
 
Join Date: Mar 2005
Location: Jurupa Valley, Ca
Posts: 848
Re: My 1968 C-20 Golden Anniversary Project

At least yours works in the correct direction. If I turn my lights on with the engine not running it moves toward the C side and running with a low battery it moves toward the D side. Backwards, and I've verified all the wiring.
__________________
Terry

1970 Custom Camper/C20 , GM Crate 350/2004R, Dana 60, factory AC
tdangle is offline   Reply With Quote
Old 09-16-2020, 03:33 PM   #129
68Gold/white
Registered User
 
Join Date: Sep 2011
Location: Ark City, Kansas
Posts: 2,558
Re: My 1968 C-20 Golden Anniversary Project

I bought a volt meter conversion from a member here. Believe is user name is TBONE...it eliminates the amp meter. I like THAT!!! An amp meter doesn't tell me enough...
68Gold/white is online now   Reply With Quote
Old 09-16-2020, 10:51 PM   #130
RichardJ
Registered User
 
Join Date: Apr 2010
Location: So Cal
Posts: 1,103
Re: My 1968 C-20 Golden Anniversary Project

Steeveedee posted,
>> I know that the system works, because when I hook up a low battery it reads about half way up on the "C" side of the meter, <<

A voltmeter will not tell you that.

"0" volts is a voltage reading. It may not be what you think you need to see as a reading, BUT it is telling you that the current being used by the truck is being replaced by the output of the Alt and is maintaining a fully charged battery.

If you periodically check the Ammeter, just as you do your other gauges and suddenly it starts reading higher than normal, it may be time to start shopping for a new battery.
In my experience, when the Ammeter starts reading, even a needle width higher each day, you have somewhere in the neighborhood of 2-3 weeks before that battery is history.

A voltmeter will not tell you that.
__________________
'67 GMC 2500, 292, 4spd, AC
RichardJ is offline   Reply With Quote
Old 09-17-2020, 08:08 AM   #131
GerhardH
Senior Member and C-20 student
 
GerhardH's Avatar
 
Join Date: Aug 2017
Location: South Germany
Posts: 482
Re: My 1968 C-20 Golden Anniversary Project

Thank you guys, so far I'm happy that probably the system works. The only think is that you cannot easily see if the gauge is working, because it is all the time at nearly 0. But found a way to check after a good advise: The heater blower is sucking alot (together with lights and hazard flusher , at least than I get 3 needle widths to D.

Regarding the voltmeter, I like to add one later, because both information together cannot be bad. But C and D I like to have too, see comments above.

Regarding wrong direction on the gauge, assuming change both wires on the gauge terminal will correct them.
__________________
Best regards GerhardH!

Members met: 68 short step, 68bowtie, 72c20customcamper, botmfedr1, C/10 King, Chevyland, cornerstore, dmjlambert, fun in dirt, GMan69, Ol Blue K20
1968 CHEVROLET C20 Custom Camper 50th Anniversary, Long bed (LB) 8', 327 V8, Air Condition (AC), Power Steering (PS), Power Brake (PB), Z62 Custom & Comfort Appearance, Turbo Hydramatic TH 400
http://67-72chevytrucks.com/vboard/s...d.php?t=760400

Last edited by GerhardH; 09-17-2020 at 09:10 AM.
GerhardH is offline   Reply With Quote
Old Yesterday, 08:37 AM   #132
GerhardH
Senior Member and C-20 student
 
GerhardH's Avatar
 
Join Date: Aug 2017
Location: South Germany
Posts: 482
Re: My 1968 C-20 Golden Anniversary Project

So next side job done: Steering gear changed, it was easier than expected but my time commitment was 10 hours, I have done this the first time.

Also good advises from
TX firefighter: http://67-72chevytrucks.com/vboard/s...d.php?t=614332.
Power Lee steering: https://leepowersteering.com/pages/h...entify-gearbox

Lesson learned:
Needs time
Pitman arm puller works great
Reed carefully the bleeding instruction.
You should have the right tool (socket for the pitman arm nut 1 5/16")

There is are difference between 7802644L (first design) and 7802644 (second design)- look e.g. for Edelmann spare Kits explanation: "The only difference between the two gear boxes is the Input Shaft Seal, the earlier models have a 13/16" OD Input Shaft and the later models have a 3/4" Input Shaft OD."
Attached Images
     
__________________
Best regards GerhardH!

Members met: 68 short step, 68bowtie, 72c20customcamper, botmfedr1, C/10 King, Chevyland, cornerstore, dmjlambert, fun in dirt, GMan69, Ol Blue K20
1968 CHEVROLET C20 Custom Camper 50th Anniversary, Long bed (LB) 8', 327 V8, Air Condition (AC), Power Steering (PS), Power Brake (PB), Z62 Custom & Comfort Appearance, Turbo Hydramatic TH 400
http://67-72chevytrucks.com/vboard/s...d.php?t=760400

Last edited by GerhardH; Yesterday at 08:44 AM.
GerhardH is offline   Reply With Quote
Old Yesterday, 08:47 AM   #133
GerhardH
Senior Member and C-20 student
 
GerhardH's Avatar
 
Join Date: Aug 2017
Location: South Germany
Posts: 482
Re: My 1968 C-20 Golden Anniversary Project

Some more pictures

Pitmanarm puller
Open wrench 5/8 and 11/16
Attached Images
     
__________________
Best regards GerhardH!

Members met: 68 short step, 68bowtie, 72c20customcamper, botmfedr1, C/10 King, Chevyland, cornerstore, dmjlambert, fun in dirt, GMan69, Ol Blue K20
1968 CHEVROLET C20 Custom Camper 50th Anniversary, Long bed (LB) 8', 327 V8, Air Condition (AC), Power Steering (PS), Power Brake (PB), Z62 Custom & Comfort Appearance, Turbo Hydramatic TH 400
http://67-72chevytrucks.com/vboard/s...d.php?t=760400
GerhardH is offline   Reply With Quote
Old Yesterday, 08:53 AM   #134
GerhardH
Senior Member and C-20 student
 
GerhardH's Avatar
 
Join Date: Aug 2017
Location: South Germany
Posts: 482
Re: My 1968 C-20 Golden Anniversary Project

5. Fill power steering pump with new fluid recommended for your vehicle,
6. While having someone watch the fluid level and adding fluid to the pump (Keep fluid above top of pump casting) crank the engine over using the ignition switch.
...
10. While you are cranking the engine over, turn the steering wheel lock to lock slowly at least 4 times to bleed the system, if you see any bubbles or foam enter the pump; stop and let the system rest until all bubbles has dissipated.

Have done alone and to fast :-(
Bubbles foam noises and additional waiting time.
Attached Images
     
__________________
Best regards GerhardH!

Members met: 68 short step, 68bowtie, 72c20customcamper, botmfedr1, C/10 King, Chevyland, cornerstore, dmjlambert, fun in dirt, GMan69, Ol Blue K20
1968 CHEVROLET C20 Custom Camper 50th Anniversary, Long bed (LB) 8', 327 V8, Air Condition (AC), Power Steering (PS), Power Brake (PB), Z62 Custom & Comfort Appearance, Turbo Hydramatic TH 400
http://67-72chevytrucks.com/vboard/s...d.php?t=760400
GerhardH is offline   Reply With Quote
Old Yesterday, 08:59 AM   #135
GerhardH
Senior Member and C-20 student
 
GerhardH's Avatar
 
Join Date: Aug 2017
Location: South Germany
Posts: 482
Re: My 1968 C-20 Golden Anniversary Project

Still not realy a clue which pump I have with this 7802644L. For sure Saginaw "S"

Assuming, but needs more measurements:

SAGINAW 800/808 GEARBOXES

This is the most common GM steering gearbox found in cars and small trucks from the 1960s into the 2000s.

The difference between the Saginaw 800 and the Saginaw 808 is the size of the piston. The 800 has a 70mm piston and the 808 has an 80mm piston. This is easy to measure from the outside of the gearbox. If you measure the end cap, the 800 is roughly 3 and the 808 is just under 3.5
Attached Images
     
__________________
Best regards GerhardH!

Members met: 68 short step, 68bowtie, 72c20customcamper, botmfedr1, C/10 King, Chevyland, cornerstore, dmjlambert, fun in dirt, GMan69, Ol Blue K20
1968 CHEVROLET C20 Custom Camper 50th Anniversary, Long bed (LB) 8', 327 V8, Air Condition (AC), Power Steering (PS), Power Brake (PB), Z62 Custom & Comfort Appearance, Turbo Hydramatic TH 400
http://67-72chevytrucks.com/vboard/s...d.php?t=760400
GerhardH is offline   Reply With Quote
Old Yesterday, 09:00 AM   #136
GerhardH
Senior Member and C-20 student
 
GerhardH's Avatar
 
Join Date: Aug 2017
Location: South Germany
Posts: 482
Re: My 1968 C-20 Golden Anniversary Project

Will count the splines later to have a clear pictures.
Look at the rag joint, only 1/4 with splines.

After pulling the pitman arm, loosen the screws from the rag joint and loosen the 4 holding bolts the removing of the steering gear was not a big problem.
Attached Images
  
__________________
Best regards GerhardH!

Members met: 68 short step, 68bowtie, 72c20customcamper, botmfedr1, C/10 King, Chevyland, cornerstore, dmjlambert, fun in dirt, GMan69, Ol Blue K20
1968 CHEVROLET C20 Custom Camper 50th Anniversary, Long bed (LB) 8', 327 V8, Air Condition (AC), Power Steering (PS), Power Brake (PB), Z62 Custom & Comfort Appearance, Turbo Hydramatic TH 400
http://67-72chevytrucks.com/vboard/s...d.php?t=760400

Last edited by GerhardH; Yesterday at 11:57 AM.
GerhardH is offline   Reply With Quote
Old Yesterday, 02:50 PM   #137
GerhardH
Senior Member and C-20 student
 
GerhardH's Avatar
 
Join Date: Aug 2017
Location: South Germany
Posts: 482
Re: My 1968 C-20 Golden Anniversary Project

Diameter 3.5" means Saginow 808.
Length approx. 12.1 "
4-hole “H” mounting pattern. (approx. 5.675", 2.875", 4.4")
Attached Images
     
__________________
Best regards GerhardH!

Members met: 68 short step, 68bowtie, 72c20customcamper, botmfedr1, C/10 King, Chevyland, cornerstore, dmjlambert, fun in dirt, GMan69, Ol Blue K20
1968 CHEVROLET C20 Custom Camper 50th Anniversary, Long bed (LB) 8', 327 V8, Air Condition (AC), Power Steering (PS), Power Brake (PB), Z62 Custom & Comfort Appearance, Turbo Hydramatic TH 400
http://67-72chevytrucks.com/vboard/s...d.php?t=760400

Last edited by GerhardH; Yesterday at 02:56 PM.
GerhardH is offline   Reply With Quote
Old Yesterday, 03:03 PM   #138
GerhardH
Senior Member and C-20 student
 
GerhardH's Avatar
 
Join Date: Aug 2017
Location: South Germany
Posts: 482
Re: My 1968 C-20 Golden Anniversary Project

Inverted flare
Attached Images
     
__________________
Best regards GerhardH!

Members met: 68 short step, 68bowtie, 72c20customcamper, botmfedr1, C/10 King, Chevyland, cornerstore, dmjlambert, fun in dirt, GMan69, Ol Blue K20
1968 CHEVROLET C20 Custom Camper 50th Anniversary, Long bed (LB) 8', 327 V8, Air Condition (AC), Power Steering (PS), Power Brake (PB), Z62 Custom & Comfort Appearance, Turbo Hydramatic TH 400
http://67-72chevytrucks.com/vboard/s...d.php?t=760400
GerhardH is offline   Reply With Quote
Old Yesterday, 03:14 PM   #139
GerhardH
Senior Member and C-20 student
 
GerhardH's Avatar
 
Join Date: Aug 2017
Location: South Germany
Posts: 482
Re: My 1968 C-20 Golden Anniversary Project

some shaft measurements
pitman: 8 spline betwen the blind spline (Total 4 blind and 32 spline)
input shaft 13/18 (0.8125") and 36 teeth but counted 31 because of the flat part without teeth.
Attached Images
     
__________________
Best regards GerhardH!

Members met: 68 short step, 68bowtie, 72c20customcamper, botmfedr1, C/10 King, Chevyland, cornerstore, dmjlambert, fun in dirt, GMan69, Ol Blue K20
1968 CHEVROLET C20 Custom Camper 50th Anniversary, Long bed (LB) 8', 327 V8, Air Condition (AC), Power Steering (PS), Power Brake (PB), Z62 Custom & Comfort Appearance, Turbo Hydramatic TH 400
http://67-72chevytrucks.com/vboard/s...d.php?t=760400

Last edited by GerhardH; Yesterday at 04:41 PM.
GerhardH is offline   Reply With Quote
Old Yesterday, 03:41 PM   #140
RichardJ
Registered User
 
Join Date: Apr 2010
Location: So Cal
Posts: 1,103
Re: My 1968 C-20 Golden Anniversary Project

Whether you are pulling a pitman arm, tie rod, suspension component or steering wheel, it is always bad practice to remove the nut while using the puller.

Turn the nut to the end of the threads, then use the puller to pop the taper loose. This prevents any possible damage to the threads and prevents any parts from flying.

Old style PS bleeding method does work for these old Saginaw steering boxes, but the more modern method of using a Hand Vacuum Pump to suck the air out of the system, does a much better job of preventing damage, especially to the pump.
__________________
'67 GMC 2500, 292, 4spd, AC
RichardJ is offline   Reply With Quote
Old Yesterday, 03:51 PM   #141
GerhardH
Senior Member and C-20 student
 
GerhardH's Avatar
 
Join Date: Aug 2017
Location: South Germany
Posts: 482
Re: My 1968 C-20 Golden Anniversary Project

Excellent advise, thank you so much!

Got also an advise regarding the coupler teeth, see here:

http://67-72chevytrucks.com/vboard/s...d.php?t=810616

It seems that there is just 1/4 of the circle with teeth.

Joke: See the wire. Is this called drive by wire?
__________________
Best regards GerhardH!

Members met: 68 short step, 68bowtie, 72c20customcamper, botmfedr1, C/10 King, Chevyland, cornerstore, dmjlambert, fun in dirt, GMan69, Ol Blue K20
1968 CHEVROLET C20 Custom Camper 50th Anniversary, Long bed (LB) 8', 327 V8, Air Condition (AC), Power Steering (PS), Power Brake (PB), Z62 Custom & Comfort Appearance, Turbo Hydramatic TH 400
http://67-72chevytrucks.com/vboard/s...d.php?t=760400

Last edited by GerhardH; Yesterday at 04:44 PM.
GerhardH is offline   Reply With Quote
Reply

Bookmarks

Tags
327, c-20, golden anniversary, th400, truck

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 08:46 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright 1997-2020 67-72chevytrucks.com