Chevrolet 1533X2 30-cwt trucks

[Colin Alford]

Tony,

The parts book doesn’t seem to give a good indication of the rear axle ratios, but see the attached image from the Driver’s Handbook.

[Colin Alford]

Power Tire Pump

The conclusions drawn above regarding the Power Tire Pump may be incorrect.

We know that the cabs were different between 1533X2 and 1543X2, but these two different MCP cabs were more similar to each other than they were to a CMP cab.

The description in Driver’s Handbook CC60L-HB1 includes “...is controlled by a lever located on the running board valance to the rear of the front mudguard...the dust cap located to the rear of the control lever...disengage the clutch and pull out on the lever” (see first two images for complete text).

The comparable description in Driver’s Handbook C60L-HB1 (a normal CMP) includes “... is controlled from within the cab...the dust cap from the hose connection at the left frame side rail...insert a screwdriver...turn the shaft counter-clockwise to engage the gears.” (See last two images for complete text and image).

Are there any clearer images of the left running board valance on 1533X2 where we might be able to make out the control lever (knob)?

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[Colin Alford]

Like many of the Chev Parts Lists, CC60L-01 uses mostly generic diagrams which do not give an accurate visual representation of the specific parts for the vehicle.

The Driver’s Handbook series are well illustrated.

Again, acknowledging that only some images from CC60L-HB1 may give a reasonable representation regarding 1533X2, here are some images that may be beneficial.

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[Colin Alford]

Here are a few more images from CC60L-HB1 that might be useful, and the last of my “blast of info” for tonight.

Regards,
Colin

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[Colin Alford]

I have re-read the entire thread and note that the info on page 37 of Volume V of the Design Record has not been included.

I note the discrepancy between the 133” wheelbase that has been quoted a number of times and the Design Record entry of 134 1/2”.

I have also included an image of “Maximum Vehicle Speeds” from CC60L-HB1, as the question of speed has come up in relation to two-speed rear axles.

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[Charlie Down]

Hi Colin
This is great, thank you for sharing this information.
Reference the PTO air pump controls, I have over 300 photos of 1533x2 trucks in LRDG service and I can confirm that I have yet to see a control lever by the air hose connector. All evidence points towards the control lever being in the floor, activated by a screw driver.

Great scan of the waterfall grill, is there any more information and/or diagrams of this area. I'm interested in the bumper brackets and support rods details.

Actually I'm interested in as much information as possible as the 1542/1543 parts books seem to be the only useable references specific for the 1533.

Your 1542/1543 parts books area little goldmine of information!

[David Herbert]

I note that in post #184 in the 'Description of body' it states that "STANDARD tool boxes are provided", which I take to mean that these are to some extent universal, which would fit in with the suggestion that they are the same as used on CMP C60L trucks made in an earlier post.

David

[Bob Carriere]

..... I could not find the ratio...it's just not there..... it shows the whole rear end as an assembly but no ratio given........ will dig deeper tonight.....

[Paul Singleton]

Originally Posted by Bob Carriere

..... I could not find the ratio...it's just not there..... it shows the whole rear end as an assembly but no ratio given........ will dig deeper tonight.....

Bob, does this help?

[Bob Carriere]

Thanks Paul

Does the book give any details as to the difference between the 9600 and 9600H series.......... The H being used by the HD MapleLeaf truck....

Book sure looks clean....don't you ever read it????

I scored a NOS 5.43 ring and pinion for the torque tube 1940 1 ton Chev I have...

Cheers

[Paul Singleton]

Here it is Bob.

[Bob Carriere]

So the GMC.... the real GMC with GMC engines (228 and 248) had a model H similar to but different than the BIG Maple LeaF..... anything to keep the dealers happy!!!!!

Cheers

[Paul Singleton]

Originally Posted by Bob Carriere

So the GMC.... the real GMC with GMC engines (228 and 248) had a model H similar to but different than the BIG Maple LeaF..... anything to keep the dealers happy!!!!!

Cheers

Yes, the 9600H used a GMC 248. The smaller GMC trucks in Canada used a 224 inline six. The 224 was a 216 bored 1/16” to give the larger displacement so the GMC would have a different engine than the equivalent Chevrolet.

[Bob Carriere]

I feel like we have beencovering the definition of "sunshine"........

The more you dig/read/find the more you confused you are like a google search find...

so the heading of this thread should be possibly/matbe/perhaps a "30424" which is there plain as sunshine in one publication but not listed in the major assembly book. Glad no one is taking offence at the various new info coming up.

So the question begs to be asked.....are all LRDG 2 speed axles......??? how do we tell them apart...... do we have an inside cab picture that shows an adadded lever on the tranny gear shift lever???

....and now I know where I canfind a 2 speed rear axle....... if the yeard has not rolled everything for crap.... Grant nugg nugg wink wink do you remember????..... I still have a piece of rusted flaked black paint under my RH knuckle.... if only the snow can melt....

Need to hunt for more 42 Chev, GM, GMC, Maple Leaf good sheet metal....

Now that everyone has their best bible open can you cross check somo thing for me........ Shock absorbers........

The CMP early models had small double action Delco..... same used on early 4x4 Dodge trucks.... the VC and WC series I beleive..... Now we know that shock absorbers on the rear axle was an option on civilian models....and civilain models tended to have single action shock absobers in front.

All CMP rear axle have the larger shcokabsorber and eventually all cab 13 had the larger shocks onthefront as well.

What was installed on the larger Chev and GMC........ I have a Chev (41/42?) rolling chassis that sports the small CMP shock absorbers and the infamous flat 1/4 in. steel plate frame reinforcement...... but no other identifying marks....... could that frame be X military???? it has the large ball bearing on the front axle........ what goes on a 304123.....

Cheers

[Tony Smith]

Originally Posted by Bob Carriere

I feel like we have been covering the definition of "sunshine"........

So the question begs to be asked.....are all LRDG 2 speed axles......??? how do we tell them apart...... do we have an inside cab picture that shows an added lever on the tranny gear shift lever???

Cheers

"Sunshine" is a difficult concept to explain to Canadians, many have never seen it!

The pic of the 1533X2 cab shows the 2 speed differential lever.

[Bob Carriere]

...... that's the lever...and in the right location.....

Need to get myself more parts vehicles....... one "wrocksul" coming up.... and maybe a frame mounted Spicer for 4 extra gears........

slowwwwwwww speed would be nice in a parade....... you release the clutch in low low low gear on Monday afternoon and start rolling by supper time.

Thanks Tony.