Chevrolet 1533X2 30-cwt trucks

[Grant Bowker]

Originally Posted by Tony Smith

The Major Assemblies manual shows that it it the same rear axle assembly (and subsequent superceding numbers) used on both trucks. Very heavy duty for the 1533! This might help someone seeking to scrounge parts from a donor truck to make a 1533 replica.

I see that the model code for both 1533 and 1543 are the only trucks with the two speed specified. I wonder if the xxx3 indicates "two speed" axle?

It might be like the use of the same parts being used throughout the CMP range. Only one part to inventory and not enough weight or cost saving to justify the added trouble/cost of having two sets of parts.

Statistically, the number of spares/truck required to keep a fleet serviceable goes down the larger the fleet size of identical trucks (or airplanes, ships or widgets) you are maintaining since the odds of them all failing at once get smaller as the fleet gets larger. Put another way 1 failure is 100% of a single vehicle fleet but the same failure is only 1% of a 100 vehicle fleet.