Wanted: 1939 (VC) 1.5 ton truck. 158-1/2" WB -Front Section Torque Tube.....

[Philippe Jeanneau]

Hello there,

I am looking for the front section of the torque tube for my 1939 (1.5 ton) 158-1/2" wheelbase truck... It is about 49" overall. Individual components are:

GM 3654084 shaft, measures 49-3/4"
GM 599127 Housing, measures 49"
GM 599126 Housing/Shaft assembly


After some time searching, I have finally gotten a hold of a used front torque tube assembly but it is a little rough... I have found some information on the replacement parts, but would like to confirm a couple of things...

The end facing fwd (gearbox) has a (bronze) or sometimes steel/bronze bushing GM 600962, dowel pin GM 347813, and oil seal GM 3652271. Not sure if it is the correct number... If so, does anyone have a modern cross reference?

Also, some aftermarket replacement bushings came with a cork gasket which I have not been able to find in the parts breakdown...

There is also supposed to be a center (all steel) bushing GM 373607, which was not inside the tube, and wonder if it contributed to the excessive wear on the front section of the shaft and bushing. I imagine it is absolutely necessary?...

It must be a tight fit inside the tube, since there is no dowel pin or set screw to keep the bushing from spinning along with the shaft which may cause another problem...

Lastly, there seems to be a special washer fitted to the opposite end of the shaft, (which also has a roller bearing GM 903207 and and lock ring GM 366989) used with a bolt tying together the center u-joint... There was only a regular lock washer, and wonder how important this other spacer/washer might be... Believe it can be found on group 4.444. Also looking for the locking rings for the u-joint bearings found on GM 609948 repair kit.

Any helpful information locating parts and putting together is appreciated here... Thank you.

[Philippe Jeanneau]

Another question I have is that the bushing for the 1940 truck, GM 3653931 is a 1/4" longer... Since I cannot find GM 600962, I wonder what the pitfalls of using the following year are, other than not having the machined groove for GM 347813 dowel pin... Third photo shows aftermarket option for GM 600962 with the cut groove...

The measurements for 3653931 (1940 truck are) are:

OD: 2.022"
ID: 1.279
Length: 1.752

SO, it cannot be used... If anyone has GM 600962 bushing please contact, thank you.

[Philippe Jeanneau]

Hello,

Wonder if anyone can confirm the part number for a trunnion bearing lock ring for a 1939 (1.5) ton truck... I come up with GM 365316, but fear that it may be incorrect, since I cannot find any replacements... The only thing listed and available is a u-joint repair kit GM 609948 which contains 4 clips, but no part number info there as far as the complete kit contents...

Apparently, these are supposed to be replaced each time you disassemble the u-joints, so I would need 8 pieces. Another part number found for a similar clip is GM 26056600, which looks similar (longer) but I do not have the dimensions... Thank you.

[Bob Carriere]

Hi Philippe.

Brought my old parts books from the barn for the Winter...... it is more comfortable doing the research by the heat of the computer.

I will cut an paste from your original text and make my comments in Italics.

Caution......NONE of the parts you are looking for are military CMP nor MCP.....
and are all related to the enclosed torque tubes ( now called drive shaft

Research based on the 1929- to 51 GM master parts catalog.

HERE WE GO......

I am looking for the front section of the torque tube for my 1939 (1.5 ton) 158-1/2" wheelbase truck... It is about 49" overall. Individual components are:

GM 3654084 shaft, measures 49-3/4"CORRECT....SHAFT, PROPELLER, FRONT, 1939-40 VC,VD,VD,VM,VN, TYPE B 49N 3/4 IN. 10 SPLINE 3654084 WAS WORTH $9.20

GM 599127 Housing, measures 49" 1939 HOUSING ASSEMBLY, PROPELLER SHAFT Lenght 49 in. 599127 $13.00

GM 599126 Housing/Shaft assembly 1939 HOUSING Assem. with shaft........VCVDVMVN length 49 in. 599127 $30.00




After some time searching, I have finally gotten a hold of a used front torque tube assembly but it is a little rough... I have found some information on the replacement parts, but would like to confirm a couple of things...

The end facing fwd (gearbox) has a (bronze) or sometimes steel/bronze bushing GM 600962, 5.438 Bushing-Dowel, front propellerprop. shaft housing.....1934 - 40 All Utilities (exc. VE<VF<VD) Bushing ( 1 1/4 in. ID)--2 inside grooves 600962 $0.85
dowel pin GM 347813,correct 1937-40 Dowel , bushing 5/16 diam. x 3/16 and oil seal GM 3652271. Not sure if it is the correct number... If so, does anyone have a modern cross reference? Not I.... Also, some aftermarket replacement bushings came with a cork gasket which I have not been able to find in the parts breakdown...No cork anything shown in my manual

There is also supposed to be a center (all steel) bushing GM 373607, which was not inside the tube, and wonder if it contributed to the excessive wear on the front section of the shaft and bushing. I imagine it is absolutely necessary?...NO central bushing in my 29-51 Master listing...... HOWEVER.... in my 1940 Preliminary Parts List they do list (not illustrated) listing for Bushing Tube centre all......373607....

It must be a tight fit inside the tube, since there is no dowel pin or set screw to keep the bushing from spinning along with the shaft which may cause another problem...??????

Lastly, there seems to be a special washer fitted to the opposite end of the shaft,Not sure where that is......903207 and 366989 not listed also no 4.444 ....4.440 is transmission gasket ....4.441spacer transmission then jumps to 4.447 cup trans. (which also has a roller bearing GM 903207 and and lock ring GM 366989) used with a bolt tying together the center u-joint... There was only a regular lock washer, and wonder how important this other spacer/washer might be... Believe it can be found on group 4.444. Also looking for the locking rings for the u-joint bearings found on GM 609948 repair kit.no kits listed

Now will tackle the second one.....

[Bob Carriere]

1939 (VC) 1.5 ton truck. 158-1/2" WB-Front Section Torque Tube Parts...
WB in 1940 was for a school bus chassis at 199 in........
Another question I have is that the bushing for the 1940 truck, GM 3653931 is a 1/4" longer... Since I cannot find GM 600962, I wonder what the pitfalls of using the following year are, other than not having the machined groove for GM 347813 dowel pin... Third photo shows aftermarket option for GM 600962 with the cut groove...Both these numbers I found in the 1940 parts book BUT not in the master parts from 29 to 51 with no size or groove references.....I would grind the length to fit and cut a groove

The measurements for 3653931 (1940 truck are) are:

OD: 2.022"
ID: 1.279
Length: 1.752

SO, it cannot be used... If anyone has GM 600962 bushing please contact, thank you.


NEXT

[Bob Carriere]

Philippe Jeanneau
1939 (VC) 1.5 ton truck. 158-1/2" WB. Trunnion Bearing Lock Ring
Hello,
5.578 Trunnion, Universal Joint 1939 No lock rinags shown for 1939 BUT.....
under 5.586 RING, U Joint Yoke trunnion bearing Lock.....from 1933 to 51 365316........
Wonder if anyone can confirm the part number for a trunnion bearing lock ring for a 1939 (1.5) ton truck... I come up with GM 365316, but fear that it may be incorrect, since I cannot find any replacements... The only thing listed and available is a u-joint repair kit GM 609948 which contains 4 clips, but no part number info there as far as the complete kit contents...NADA

I would suggest you search for a similar part by size rather than make, model and year...... find a drive train specialty shop that services prof. trucks and do custom fabrication or rebuilds drive shaft...... if they have them they will have a full box at a few pennies each and they do not care what it fits on...... In Ottawa Malmberg truck centre has a seperate building for drive train fabrication....... walked in with a section of CMP short driveshaft and an old U joint..... guy at the counter did not even said hello...looked at the U joint with the taped over cups and said....something like #2920 how many do you need....... two I said....... do you want them press in....$10 a pair...... YES pleeeze......Now they have undergone a change of ownership since then....not sure what that might have done...... the counter guy could not care less if it came from a bread making machine or agricultural equipment..... lots of it is generic........ same for bearinsg if they search by size rather than part 80 years old part number success is more likely.

Apparently, these are supposed to be replaced each time you disassemble the u-joints, so I would need 8 pieces. Another part number found for a similar clip is GM 26056600, which looks similar (longer) but I do not have the dimensions... Thank you....... no in of on the260xxx number.


....and they say the search is half the fun........

[Philippe Jeanneau]

Hello Robert,

I appreciate your due diligence here... I have put the front tube together, but I am still in search of the trunnion locks, GM 365316... I am still in shock that no one has a pile of these... I will go to the one drivetrain shop nearby and see if they can be of any help...