Posted by Clint Dixon [172.68.58.86] on Thursday, April 26, 2018 at 20:12:41 :
In Reply to: Re: more power stgeering questions posted by Kaegi [172.68.143.51] on Thursday, April 26, 2018 at 13:09:25 :
Here is what I find so far in parts list #D-16325 that was issued in June of 1957 and covered ONLY the four wheel drive trucks.
The "Farm Friendly Power-Wagon" for that year of course was the W-300 - the only year it would wear that particular model code. In some later lists, this 1957 truck is shown as "KW300" with "K" being the Series and "W" being the Type. For the 1958 model year the designation changed to "LW300M", changing the the Series to "L" for to reflect the new year and the "Type" to "WM"(even though the 300 was sandwiched in between the letters).
It only gets more confusing from there....
Back to the 1957 parts list:
If one were looking for a part number for a complete manual steering box, it is clearly listed right there at 1189 340 - unchanged from previous years. However, the power steering box is not listed as a complete assembly. The closest one can get is code 19-01-8, CHUCK, Partial, w/Power Strg., part number 1667 382. This number wears the additional designation showing that it is a new number never having been listed previously. I do not know where they came up with the "CHUCK" description. I can only assume it is the power steering box equivalent to a short block engine. This number is unique to the W-300 model and is not shared with other trucks.
Code 19-02-4 lists the steering box housing as: HOUSING, w/Power Strg., part number 1785 812. Again, this is a new number having never appeared in a previous parts list and also is unique to the W-300.
The parts list goes on to show dozens of individual parts unique to the power steering assembly used on the W-300. Most of these are unique to that model and have never been listed previously. For example - the steering gear column jacket is a new number and unique to the W-300.
Code 19-54-2 lists the power steering oil pump simply as: PUMP, part number 16664 650. This particular pump is shared with the W-100 and W-200.
The driven pulley mounted on the pump is under code 19-54-86 as: PULLEY, Pump, part number 1667 514. This number is new and is unique to the W-300.
The driving pulley mounted on the water pump is: Code 19-54-87, PULLEY, Drive, part number 1189 751. This pulley number is listed only for the W-300, but it is not new. It is also listed as the variable speed governor drive pulley under code 14-71-8, PULLEY, Drive, part number 1189 751.
The old bracket for mounting the variable speed governor is now listed as "w/o Power Steering". The power steering pump mounting bracket is a new number and seems to now serve a dual purpose - to mount the governor AND the power steering pump - both at once. This gets kind of confusing, but there are two separate "Plates" listed - one for "Pump Mounting", and one for "Governor and Pump Mounting". Both of these have numbers that are new and unique to the W-300. This would make perfect sense assuming it actually shows that a new engine head bracket was created with a transition plate needed between it and the power steering pump, and a different plate needed if the truck was equipped with BOTH the governor and power steering pump.
Whew!
That is all for tonight. I will resume research further in another day or so.
Junior
Follow Ups: