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Allis-chalmers Hd-7w yr 1942 service manual: A Snippet

DESCRIPTION (figs. 1 to 10).
a. General. This tractor is of the crawler or track-laying type and
may be used for either highway or cross country travel even under the
difficult operating conditions presented by mountains, swamps, sand, or
unbridged ditches. Because of its relatively low center of gravity, the
tractor can easily climb slopes as steep as 30 degrees depending on the
kind of footing available and the load being pulled.

b. Engine. Power is supplied by a water-cooled, 3-cylinder, valve-
in-head, 2-cycle Diesel engine. A multiple speed transmission is used,

offering 4 forward speeds ranging from 2.64 miles per hour to 8.35 miles
per hour and a reverse speed of 3.14 miles per hour at full throttle

engine speed. The fuel tank has a capacity of 120 gallons which per-
mits about 20 hours of operation without refueling.

c. Steering. Steering is accomplished by means of steering clutches
operated by 2 levers mounted in the center of the tractor within easy

reach of the operator. Each lever controls a multiple disk steering
clutch through which power is delivered from the transmission to the
drive sprockets.
d. Seat. The seat has removable cushions and safety straps and will
accommodate the operator and one other man.
e. Winch. The winch is mounted on the front of the tractor and is
driven by a reversible power take-off from the tractor transmission.
A control lever for the power take-off is just ahead of the seat and in
easy reach of the operator.

f. Equipment. Equipment on the tractor includes batteries, elec-
tric starter, generator, lights, mile meter (odometer), engine air heater

and engine preheater for cold weather starting, fire extinguisher, snatch
block, tow chain, and loose tools.
g. Tractor and Engine Numbers. The serial number of the tractor
is stamped on the master clutch inspection cover, and also on the rear

Allis-Chalmers Manuals

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We would highly recommend that you read the terms and conditions (which includes the refund policy) before you purchase our manuals to avoid any disappointments. In a situation (such as below) it can be really frustrating for both parties to deal with, if you haven’t read the terms and conditions prior to purchasing and paying for a manual from our website.

Sample situation:
The customer has not been able to download their manual file after 2 weeks of purchasing. They have contacted us after 2 weeks saying, “I have not been able to download this file. I don’t want to have to give you a bad review and get my money back so please look into this”. Upon checking the problem, we then fixed our error on our end and the customer has now been able to download the file. The problem has now been solved.

If you are having any problems, please do not hesitate to contact us because we are more than happy to help and fix the problem. Please don’t wait until 2 weeks and until you have a built up frustration to contact us for help. Please don’t tell us that you will give a bad review over something that can easily be fixed (obviously let us know first then if problem is not resolved, send in the bad review). Please don’t tell us that you will demand for a refund if nothing has been fixed because this just tells us that you did not read our terms and conditions. Please contact us immediately if you are having any issues with your purchase because we are here to help!

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NEW: Physical copies

We have recently added physical copies of manuals that will be available to purchase via eBay. We can post them to you everywhere in the world with a few costs to cover the postage fees. You can view them all directly via eBay or the website’s categories page.

Category: Physical Copies

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UTB Tractors by Don


The UTB tractors were sold in the USA as rebadged Long tractors, here is a bit of info on them.
DESCRIPTION tractor manuals downunder manuals this is the Long UTB tractor
The engine installed in the wheel tractor models 360, 460 and 510, is a high speed
diesel unit with four strokes and three cylinders-inline. The engine crankcase is a cast
iron unibloc with dry type replaceable cylinder liners, and with the housings for the
crankshaft main bearings and valve tappets.
Helical-teeth timing gears, camshaft located in the crankcase and overhead valves;
intake valves are shielded to increase turbulence of the aspirated air. The power train
is driven by the crankshaft which revolves in four thin shell main bearings and
includes: Light alloy pistons with toroidal combustion chamber built in top, three
piston rings (two oil scrapers and one compression ring), forged steel connecting rods
and liners lubrication and a second one through the small end for piston cooling.
Aspirated air is filtered through an oil bath air cleaner.
Fuel is injected directly into the high turbulence combustion chamber built in piston
Double diaphragm fuel lift pump, double filters connected in series and water trap on
the first filter.
Injection pump of the plunger type with all speed governor and automatic timing
device: type Rotary,with fly-weight mechanical governor.
Separate four hole nozzles (360/460) or three hole nozzles (510) clamped to the cylinder
Forced feed lubrication from camshaft driven gear-type pump with built in relief valve.
Full flow filter screwed to the crankcase and provided with an internal relief valve
which bypasses the oil flow when filter is clogged.
A centrifugal pump, belt-driven by the crankshaft-mounted drive pulley, forces the
coolant flow which enters the radiator when the temperature reaches up to thermostat
The cold air drawn by the fan which is secured to the water pump hub, cools the
coolant inside the radiator. Direct electric starting with solenoid engagement, 12 volt motor and starting aid for low temperatures.
(1 Hr.)………………………………96,000 Engine Revs..96,000 Engine Revs__96,000 Engine
Engine Weight (Without Air Cleaner
and Lubricating Oil)……………..660 lbs. (299 kg)……660 lbs. (299 kg)……660 lbs.
(299 kg)
Manufacturer’s Maximum Observed P.T.O.
Horsepowerat Rated Engine Speed 35(26.1 kw)

A Sincere Note From Us:

This blog post was written by our late founder, Don. If you would like to read more, click here.
We will add more old posts written by Don in the future as a dedication for him.

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Caterpillar 2-Ton: A snippet

Caterpillar 2-Ton Tractor

“CATERPILLAR” 2-TON TRACTOR INAD THE 2-Ton, like the other models of the “Caterpillar” Tractor, is designed and built, not to meet a price, but to the highest standards of design, material and construction. All shafts and gears are of high grade steels. Clutch plates are of saw steel. Roller frames are steel castings. Throughout the tractor extensive use is made of anti-friction bearings.

The 2-Ton is built entirely in the “Caterpillar” plants—in the most modern, well-equipped factories, by skilled workmen. Rigid inspection is made, not only of the finished tractor and of the work in various stages of its progress, but also of the raw materials. Among the 2-Ton’s foremost features is its wide range of utility. It is small enough to work almost anywhere—only 58 inches high and 52 inches wide.

Its three forward speeds adapt it for a great variety of operations. Its liberal power enables it to do subsoiling, chiseling and other heavy work that is beyond the limits of the ordinary small tractor’s capacity. Another of the 2-Ton’s features is the simplicity of its unit construction. There are but three units to the entire machine….

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Chamberlain manuals by Don


Quite often I get requests for wsm`s for the Chamberlain C670 & the C6100. Personally over the last 20 yrs I have yet to see a paper wsm for these tractors.i think this is because by this time JD owned Chamberlain industries, Knowing JD as I do , its not surprising to me that there never were paper wsm`s for these 2 tractors, There were manuals on micro fiche for dealers, but I never managed to find a method to digitize such manuals.But all is not lost …Again just a personal view, I think both tractors were cobbled together to use up the parts Chamberlain industries had on hand Both the 70& the 100 are much the same , based on the Chamberlain 306 & the 354 tractors ,You could say the C670 is an update of the Chamberlain 306 & the C6100 is the update of the Chamberlain 354. The 70 having the Perkins 306 engine and the 100 the Perkins 354 engine. So if you want to work on the 70 or the 100, then use manuals for the 306 or the 354… hope this helps someone

A Sincere Note From Us:

This blog post was written by our late founder, Don. If you would like to read more, click here.
We will add more old posts written by Don in the future as a dedication for him.