C.C.K.W. 352 B1 Restoration, Update 01 Aug. 2017

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D.R.H.
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Re: C.C.K.W. 352 B1 Restoration, Update 13 Nov. 2015

Post by D.R.H. » Sun Nov 15, 2015 10:54 am

Guys, I think that one of the most notable differences between a Chevy and Jimmy is the fasteners that hold the Drive Flanges and Axle shafts to their respective hubs.
I.E......
Chevy, (Terne Plates all around, with either Studs and Nuts or Shoulder Bolts and Lock Washers).
Jimmy, (Terne Plates all around and Studs, Locking Cones WITH Lock Washers and Nut).
My guess is that the difference in cargo weight each truck can have at capacity, calls for a different design. Perhaps the thought is that a Chevy is local, and a Jimmy will go "long haul" and not have the opportunity of more frequent checks.
In Loving Memoriam: George R. Hancock. 20 Mar. 1938 - 11 Jan. 2017. U.S.A.F. 1956 - 1962. R.I.P. Dad.
In Loving Memoriam: Ann Hancock, 08 Mar. 1934 - 25 Sept. 2021. R.N. 1960 - 2005. R.I.P. Mom.
Thank You BOTH for always being there.

My YouTube Channel. https://www.youtube.com/channel/UCaMKEv ... M3g/videos.


Joe Gopan
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Re: C.C.K.W. 352 B1 Restoration, Update 13 Nov. 2015

Post by Joe Gopan » Sun Nov 15, 2015 1:22 pm

CCKW Timken axles are attached to the hubs via studs with axle flanges that have tapered holes and and tapered dowels that are split that go into the tapered holes in the rear axle flanges. There are 32 of them and they are designed to stick out of the flanges slightly so that they will jam in tightly when the drive flange nuts are tightened.

Banjo Chevrolet and GMC share the same 7/16" NC Bolts and Terneplate gaskets and also share the same hubs, brakes and backing plates.
Production demands for the CCKW were such that the Corporation Axle production capacity could not keep up and thus the need for another Transfer and axle supplier. Although the Chev and CCKW Banjo transfer shifter shafts appear similar, "in" on Chevrolet, is "out" on the GMC. Another tidbit, the Timken differentials were constructed with more precision than the Banjo, and same for the Timken Transfer. :wink:
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
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Re: C.C.K.W. 352 B1 Restoration, Update 13 Nov. 2015

Post by Nicolini » Tue Nov 17, 2015 11:19 am

Hello Dave,many thanks for the detailed pictures of the engine and of course for all the other pics,I wish my Jimmy restoration would be in such a advanced stage but last week I picked up the chassis of my truck from the sandblaster.All the best wishes,Nicolini

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Re: C.C.K.W. 352 B1 Restoration, Update 13 Nov. 2015

Post by D.R.H. » Tue Nov 17, 2015 7:21 pm

Thank You Nic !!! Just a reminder, this truck is not mine. It is for an operational museum. I am doing the restoration as if it were mine though. There is a saying in the construction trades, "There is never enough time to do it right the first time, but always plenty of time to do it a second time". I have ALWAYS remembered it and have ALWAYS worked toward the opposite of the saying.
My personal goal is to "Do it right the first time, and it will last for another 70 years". So take your time and do it right, I know you can build another prize winner too. I really hope to see some photos of your truck as you re-assemble her. :)

I am going to plumb the vacuum system tomorrow and will provide pics. of the installation.
In Loving Memoriam: George R. Hancock. 20 Mar. 1938 - 11 Jan. 2017. U.S.A.F. 1956 - 1962. R.I.P. Dad.
In Loving Memoriam: Ann Hancock, 08 Mar. 1934 - 25 Sept. 2021. R.N. 1960 - 2005. R.I.P. Mom.
Thank You BOTH for always being there.

My YouTube Channel. https://www.youtube.com/channel/UCaMKEv ... M3g/videos.

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Re: C.C.K.W. 352 B1 Restoration, Update 17 Nov. 2015

Post by D.R.H. » Tue Nov 17, 2015 7:50 pm

Alright Gents. More photos, more progress.
There was a question that was put to "Jimmy Crew" about the Governor and I remember it being which way it should point. The answer, to the firewall.

I had to erase the the photos that depicted an incorrect installation of the insulator and carburetor. Here are photos of the correct installation "stack" of gaskets, governor and carb.
Image
Image

And one pic. of the throttle bell-crank assembly.
Image
Last edited by D.R.H. on Thu Nov 19, 2015 5:12 pm, edited 2 times in total.
In Loving Memoriam: George R. Hancock. 20 Mar. 1938 - 11 Jan. 2017. U.S.A.F. 1956 - 1962. R.I.P. Dad.
In Loving Memoriam: Ann Hancock, 08 Mar. 1934 - 25 Sept. 2021. R.N. 1960 - 2005. R.I.P. Mom.
Thank You BOTH for always being there.

My YouTube Channel. https://www.youtube.com/channel/UCaMKEv ... M3g/videos.

Joe Gopan
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Re: C.C.K.W. 352 B1 Restoration, Update 17 Nov. 2015

Post by Joe Gopan » Wed Nov 18, 2015 4:01 am

See following post.
Last edited by Joe Gopan on Wed Nov 18, 2015 8:15 am, edited 3 times in total.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO

Joe Gopan
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Re: C.C.K.W. 352 B1 Restoration, Update 17 Nov. 2015

Post by Joe Gopan » Wed Nov 18, 2015 4:13 am

As far as the direction the Governor is mounted, you have it correct, the cover on the Governor faces the Valve cover and the Governor Adjusting Screw faces the rear.
The rest of the installation needs to be changed.
The OEM Gasket below the Bakelite Insulator that sets on the manifold is not vented with the slots, but the slotted gasket can be used as it will not bother anything.
The Bakelite Insulator is next, and a blank gasket on top of the Insulator (Slotted is OK but not needed), next, the Governor, next, a slotted (ported gasket) then the carburetor. I can help you with a bakelite Insulator if yours is damaged. I also have a limited supply of the OEM GM stamped Seal Cups for the Governor and front carburetor stud. I sealed mine and was lucky enough to have a NOS late GI Issue (1989 Contract) Die Cast Carburetor to make my engine happy.
You are doing good on the project and have raised the bar for those who go for early CCKW accuracy.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO

D.R.H.
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Re: C.C.K.W. 352 B1 Restoration, Update 17 Nov. 2015

Post by D.R.H. » Wed Nov 18, 2015 4:10 pm

Thank You Joel for your advice. The engine was shipped without the carburetor installed, so I went with how the gaskets were stacked. I DO NOT know all there is about these fine machines and welcome any and all help when I have made a mistake. I am glad that you caught it. I can see now that the insulator needs to between the Gov. and Intake manifold.
First thing tomorrow I will correct the stack-o-gaskets mistake. :)
Dave.
Last edited by D.R.H. on Thu Nov 19, 2015 7:45 pm, edited 1 time in total.
In Loving Memoriam: George R. Hancock. 20 Mar. 1938 - 11 Jan. 2017. U.S.A.F. 1956 - 1962. R.I.P. Dad.
In Loving Memoriam: Ann Hancock, 08 Mar. 1934 - 25 Sept. 2021. R.N. 1960 - 2005. R.I.P. Mom.
Thank You BOTH for always being there.

My YouTube Channel. https://www.youtube.com/channel/UCaMKEv ... M3g/videos.

Joe Gopan
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Posts: 49841
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Re: C.C.K.W. 352 B1 Restoration, Update 17 Nov. 2015

Post by Joe Gopan » Thu Nov 19, 2015 3:51 am

Clean the studs in good shape so that the insulator does not jam. Do you have enough good gaskets? I can set aside an intact insulator for your truck if the one you have is not OK.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO

D.R.H.
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Re: C.C.K.W. 352 B1 Restoration, Update 17 Nov. 2015

Post by D.R.H. » Thu Nov 19, 2015 5:15 pm

Joel, once again thanks for the help. Turns out everything came apart easily and without any damage. The Insulator is okay, and as you can see, everything is back together in the correct order now. :oops:
In Loving Memoriam: George R. Hancock. 20 Mar. 1938 - 11 Jan. 2017. U.S.A.F. 1956 - 1962. R.I.P. Dad.
In Loving Memoriam: Ann Hancock, 08 Mar. 1934 - 25 Sept. 2021. R.N. 1960 - 2005. R.I.P. Mom.
Thank You BOTH for always being there.

My YouTube Channel. https://www.youtube.com/channel/UCaMKEv ... M3g/videos.

Joe Gopan
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Posts: 49841
Joined: Sun Mar 02, 2008 12:37 pm
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Re: C.C.K.W. 352 B1 Restoration, Update 17 Nov. 2015

Post by Joe Gopan » Thu Nov 19, 2015 5:47 pm

I trust you, you can work on my truck. :wink:
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO

D.R.H.
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Re: C.C.K.W. 352 B1 Restoration, Update 19 Nov. 2015

Post by D.R.H. » Thu Nov 19, 2015 9:06 pm

Thank You Joel, that means allot to me. I am striving to get it right.

So Gents, and Nicolini. Here is what we have been waiting for. The Vacuum over Hydraulic 1st. series Brake System. Very simple and now that it is back together, I think that it will be MOST effective.

First up is a pic. of the rubber hose. It is not your average run-of-the-mill hose. It is vacuum/pressure hose. It has a Positive burst resistance strength of 1500 Lbs. per sq. inch, and Negative collapse resistance strength of 900 Lbs. per sq. inch.
Best of all, it is made by Gates in the good ole YOO-ESS-of-AAAA !!
Image

Check Valve to Copper Hard Line connection.
Image
Image

2nd. connection is the "T" from the Check Valve to Vacuum Proportioning Valve. Being that when the brake pedal is depressed, one MUST allow a little extra hose from the "T" to the Valve. Total movement Fore and Aft is about 4 inches.
Image
Image

As we can see, this hose is in direct line from the Check Valve on the Manifold. It is plumbed to the FRONT of the Vacuum Canister by way of another Copper Hard Line.
Image

This is the view of the Copper Hard Line connected to the hose in the previous photo. We can also see just how the Aft end of the Vacuum Proportioning Valve is connected to the inner Torque Arm. The shaft it is on goes through the frame and operates the Torque Arms along the Port side Frame Rail.
Image

Looking Aft, we can see the Copper Hard Line connected to the front of the Vacuum Canister. It has a Clevis that connects to another Torque Arm. Its' respective shaft also goes under the Port side Frame Rail, a little further Aft, and is then in connection of the myriad of Torque Arms and Bell-Cranks which lead to the Master Brake Cylinder.
Image

And now, plumbed to the front of the Vac. Can.
Image

At this point, I had to remove the Vac. Can., again, and the wood frame block to install the Copper Hard line that returns to the Vac. Proportioning Valve.
Image

Here is the front end of the Line from the previous photo, ready to be connected to the Vac. Prop. Valve.
Image

The pipe that is connected to the port side of the Vac. Prop. Valve and the back of the Vac. Can. allows a slight vacuum into the back of the Vac. Can. so the entire "Brake Actuating System" will return to a neutral position.
Image

My opinion of the "Top End" of this Brake System was over thought and too complicated. But at the same time, it is really cool to look at and to watch operate. I guess that is why the geniuses at G.M. re-thought this system and came up with a totally better design. Over all I would trust it after having had my hands on it and having come to understand exactly how it works.

Stand fast men, more to come. Thanks for lookin'. :)
Last edited by D.R.H. on Fri Nov 27, 2015 2:56 pm, edited 1 time in total.
In Loving Memoriam: George R. Hancock. 20 Mar. 1938 - 11 Jan. 2017. U.S.A.F. 1956 - 1962. R.I.P. Dad.
In Loving Memoriam: Ann Hancock, 08 Mar. 1934 - 25 Sept. 2021. R.N. 1960 - 2005. R.I.P. Mom.
Thank You BOTH for always being there.

My YouTube Channel. https://www.youtube.com/channel/UCaMKEv ... M3g/videos.

Nicolini
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Re: C.C.K.W. 352 B1 Restoration, Update 19 Nov. 2015

Post by Nicolini » Fri Nov 27, 2015 7:21 am

Hello Dave,again super detailed pic's of super work.I'm not sure if I can do a prizewinning restoration but I ever tried to get things right first time with all my restorations I did before (mostly sports cars from the sixties and seventies).I recently came back from holiday in France and brought back home some GMC pieces hard to find in Germany.Resto will restart next spring because here in Bavaria winter arrived with snow and temperatures sub zero and my premises are without any heating so only possible to do some minor parts.Greetings from Bavaria,Nico

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Re: C.C.K.W. 352 B1 Restoration, Update 19 Nov. 2015

Post by D.R.H. » Fri Nov 27, 2015 3:02 pm

I think that you can do just as nice a job Nico. I really think it is not too hard. Do what you can during the winter months, take your time and do your best. :)
Hey I just thought of something, Don't you guys in Bavaria have some of the worlds best chocolate?
In Loving Memoriam: George R. Hancock. 20 Mar. 1938 - 11 Jan. 2017. U.S.A.F. 1956 - 1962. R.I.P. Dad.
In Loving Memoriam: Ann Hancock, 08 Mar. 1934 - 25 Sept. 2021. R.N. 1960 - 2005. R.I.P. Mom.
Thank You BOTH for always being there.

My YouTube Channel. https://www.youtube.com/channel/UCaMKEv ... M3g/videos.

Nicolini
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Re: C.C.K.W. 352 B1 Restoration, Update 19 Nov. 2015

Post by Nicolini » Sat Nov 28, 2015 2:20 am

Hi Dave,here you are wrong,the guys who create the best chocolate are in Switzerland,some five hundred kilometers from me,sorry


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