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Antique Autos and Trucks All about finding and fixing old car or truck engines and vintage vehicles.

Antique Autos and Trucks

1921 Pierce-Arrow X5 Two Ton Truck


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  #1  
Old 02-14-2017, 05:54:19 PM
Chris Props Chris Props is offline
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Default 1921 Pierce-Arrow X5 Two Ton Truck

Picked this thing up last summer, and have been working on it here and there. It was originally from Elkton, VA where it was used to haul produce from Elkton to Baltimore, MD twice a week. It was pulled out of a shed in Elkton, I think around 1960, and has been apart ever since. It sat outside for a period of time while apart and exchanged hands a few times, but managed to stay mostly complete. A few parts need to be located, such as a Spicer driveshaft, Delco generator, and correct rear rims.

The engine is pretty much like a Pierce-Arrow car engine with the back two cylinders chopped off and has neat things like dual ignition and twin roller cams. There are enough valves and spark plugs to make an eight cylinder. Four speed transmission and an 8 1/3:1 ratio worm drive rear end with 40x8 tires on the back. Max speed is governed at 23 mph. It was originally a van body, but I'll probably just build a flat bed.

Pictures are how it looked when bought. All of the sheet metal, fenders and C cab are there, but off of it.

More to come later...
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  #2  
Old 02-15-2017, 01:08:03 AM
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Craig A Craig A is offline
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

Is it gear drive Delco generator/coil/distributor you need?
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Old 02-15-2017, 10:29:33 AM
Chris Props Chris Props is offline
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

No, its a standalone generator. Runs from the back of the water pump through a flexible coupling. Delco number 201. All I can find is a drawing from the parts book.
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Old 02-21-2017, 08:54:29 PM
Chris Props Chris Props is offline
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

And so it begins.

This truck has a divorced tranmission mounted behind the cab, made by Covert, with the shifter rails extending up to the bell housing where the shifter is. The rails were stuck so I pulled the shifter out and found the case full of water. Some heat and a lot of persuasion broke them loose.

Dropped the pan. I don't think its ever been off since new. Not too many problems... yet.
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Old 02-21-2017, 10:35:52 PM
eddie bedwell eddie bedwell is offline
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

Hi Chris,
may I suggest you do not use rag/cotton waste, flannelette etc. to wipe out the engine crankcase and components.
As outlined in the scan below from a Caterpillar 2 Ton Manual from 1925 this clogging of oil pump suction screens was known of.
Am following your truck restoration with interest.

I once had to do a failure analysis of a big Cat 3512 engine that did less than 8 hours running after a full rebuild.
The clients mechanics had used linted rag to wipe engine components.
This resulted in the oil pump suction screen clogging with lint resulting in oil starvation to the crank bearings.
Some big end bearings seized and broke a conrod which then proceeded to cut the engine almost in two.
Very, very expensive lesson--alas a new engine was the only fix.
Best regards,
Eddie B.
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  #6  
Old 02-22-2017, 10:24:15 AM
Chris Props Chris Props is offline
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

That was a mouse nest.
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Old 02-28-2017, 04:39:49 AM
BlasterMike BlasterMike is offline
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

Hi Chris, like your project, I've got an unrestored 1926 2 ton XA pierce arrow, its twin ignition 4 cyl and they still have the mid mounted g/box with the selector ontop of the clutch housing like yours, mine has had the solids cut down to take pneumatic rims, but I have another XA 1923 chassis with a set of correct solid rears, haven't started on restoring yet but will follow your thread with interest, thanks for posting,
cheers mike
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Old 03-04-2017, 09:18:21 PM
Chris Props Chris Props is offline
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

The engine will need a complete overhaul. The rods and mains are well worn. No shims from the factory, and a few other surprises were hiding in the block. It'll also need valve seats and all four cylinders sleeved.

I found it interesting that the nuts for the rods and mains were stamped with the numbers 1-8 to indicate where they belong along with a mark to indicate when they are correctly torqued. Almost all of the parts in this engine are stamped with the serial number.
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Old 03-04-2017, 09:24:25 PM
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

Contents of the water jacket.
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Old 04-04-2017, 10:25:52 PM
Chris Props Chris Props is offline
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

More pictures. The transmission was made by Covert and the front and rear axle by Stan-Par. The engine was a little tough to get out, but finally broke loose. Aluminum and steel don't age well together.
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Old 04-04-2017, 10:27:48 PM
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

Down to the bare frame.
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Old 06-04-2017, 10:05:21 PM
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

The transmission had been sitting open for years and was quite caked up on the inside, but it was in really good shape. It just needed new bearings and the top cover had rusted through.
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Old 06-04-2017, 10:26:52 PM
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

I found this while blasting the frame. All of the holes for the brake cross shaft had been drilled wrong, filled and redrilled
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Old 06-11-2017, 10:29:16 PM
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

The air pump had been rebuilt sometime in the past so it didn't need much. Just some gaskets, and the rods had been set up a little too tight.
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Old 06-12-2017, 08:22:26 AM
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

Excellent meticulous work. And oh am I jealous about your shop!
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Old 07-24-2017, 03:20:51 PM
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

The rear end was in good shape. There were quite a few filings from the worm wheel in the bottom of the case, but it still looks decent and usable.
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Old 09-17-2017, 04:33:47 PM
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

The steering box and front end were in great shape. Very minimal wear. The steering box was full of water, but there was enough grease left inside to keep it from rusting. A casting flaw showed in the steering box after blasting so I brazed it shut, but other than that it needed nothing.
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Old 09-17-2017, 11:38:09 PM
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

Hello, The Pierce-Arrow steering box appears very much like the JACOX design boxes used on Buick and a number of other cars and trucks to include Seagrave.
Alan
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Old 09-18-2017, 11:06:20 AM
Chris Props Chris Props is offline
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

Interesting. It has Ross Gear & Tool Co. cast on the side along with Pierce Arrow.
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Old 09-19-2017, 09:58:58 PM
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Default Re: 1921 Pierce-Arrow X5 Two Ton Truck

I'd say the regulator spent some time on the Titanic.
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