Chevrolet 1533X2 30-cwt trucks

[Tony Smith]

Originally Posted by Grant Bowker

Again by parallel to CMP, Ford and Chevrolet may have used different rear axles. The ones shown appear to match Chevrolet casting style (not a Ford split axle). I don't know how Ford handled 2 speed axles - whether with a split housing, a GM style banjo or a pure "supplier" axle (Eaton, Timken, Spicer etc.). I will try to dig into this more later.

The Eaton 2 speed differential is of a "Banjo" design, regardless of it's intended vehicle; Chev, Ford, Dodge, Bedford, Leyland. It's still getting about today with some refinements.

[Colin Alford]

Front axle.

While there were 3 possible front axles on 1533X2, they match the last 3 (of 5) types used on 1543X2.

[Colin Alford]

Steering gear,

1533X2 and 1543X2 used the same three types of steering gear. 1542X3 used only the last two types as the others.

[Colin Alford]

That exhausts the information available in the Major Assemblies book.

My read on this information (and the information/study presented above by others) is that “Major Assembly-wise” 1533X2 was essentially the same as 1543X2, but there were definite differences in wheel-base (and therefore frame), cab style, and cargo box.

My inference is that Parts list CC60L-01, and Driver’s Handbook CC60L-HB1 (which both cover 1543X2), are probably reasonable reference materials for mechanical systems in 1533X2 in the absence of the correct manuals.

[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)?

87AA4C6B-5D8C-44E2-BA9C-61260402FBE9.jpeg

DEED437E-67AA-4F3D-8FF0-C68CA53EABDD.jpeg

3DE90BCD-C78E-4544-B0CB-3DF0F76B32EB.jpeg

94BA1FE7-903B-4B25-8419-955A3F96B0B6.jpeg

[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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F153C2A5-209F-4717-AD1D-A23DEEF0C816.jpeg 66EDD0E2-55A7-46A7-BEAE-37E2C9610534.jpg

[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]

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.