TOPIC 6. LUBRICANT SPECIFICATIONS

TM 10-3930-644-14&P

A. ENGINE LUBRICATING OIL

Our recommendation of 100 hours for filter and oil

change periods is based on the use of high quality oils

Lubricating oils used in Allis-Chalmers engines must:

and 85% average engine loads with the engine in good

adjustment and operating with the coolant and

1. Maintain pistons, rings, and other moving

lubricating oil at normal operating temperature.

parts in a carbon-free, varnish-free, clean

'Variations from the considered normal operating

condition.

conditions must be compensated for by more frequent oil

change and filter change periods.

2. Maintain enough body to satisfactorily

lubricate the moving parts at maximum oil

Our recommended oil change periods are based on

temperatures.

what experience has shown to be conservative and safe

hours of operation between oil changes. Actual testing

3. Prevent bearing corrosion.

Counteract

of the lubricating oil in a particular engine application at

corrosive products of combustion or

each 5 to 10 hours operation after 100 hours operation

contaminants in the fuel.

to determine the condition of the oil may allow extending

the oil change periods. This testing service is provided

4. Promote general cleanliness within the

by most major oil companies. it is recommended to take

engine.

advantage of this service.

The American Petroleum Institute has several service

B. HYDRAULIC SYSTEM OIL

classifications for oils used in gasoline and LP gas

Use a hydraulic oil that conforms to Allis-Chalmers

engines; they are SA, SB, SD, and SE.

specification MA 170. 103 or SAE 10 SE engine oil (or

MIL-L-21048) in the hydraulic system.

SERVICE SA: Service typical of engine used under light

and favorable operating conditions, the engines having

The hydraulic oil must be fortified with special rust and

no special lubrication requirements and having no

oxidation inhibitors, plus antiwear ingredients, and

design characteristics sensitive to deposit formation.

treated to minimize foaming. The hydraulic oil must

conform to the following in Allis-Chalmers specification

SERVICE SB: Service typical of engines used under

MA 170.103:

moderate to severe operating conditions, but presenting

problems of deposit corrosion control when lubricating

Viscosity at 100 F SUS..........................150 - 170 secs

oil-temperatures are high.

Viscosity Index ......................................90 min

Flash Point ...........................................370F min

SERVICE SD: Service typical of engines used under

Neutralization No.

unfavorable or severe types of operating conditions and

(mgs KOH/g oil)................................0.60

where there are special lubrication requirements for-

Aniline Point .........................................180-220 F

deposit, wear, or bearing corrosion control, due to

Oxidation Stability (hrs. to

operating conditions, or engine design, or fuel

neut. No. 1.0 max) ...........................1500

characteristics.

Rust Test ............................................Pass

Cooper Strip Corrosion

SERVICE SE: Oils designed for this service provide

(3 Hours at 212F)............................Pass 2B

more protection against oil oxidation, high temperature

Pour Point ............................................-20F max

engine deposits, rust, and corrosion in gasoline engines

than oils which are satisfactory for classification SD.

The SAE grade 10 SE engine oil is available at all major

oil companies and most local service stations. The oil

Generally, SERVICE SB will apply to the gasoline

meets the requirements of the American petroleum

engine.

Institute and contains rust and oxidation inhibitors, anti-

wear ingredients, and an anti-foaming agent.

Use oils of the following viscosities:

Hydraulic system oil storage containers must be kept

Ambient

free of contaminants, such as dirt, water, and metal

Temperature

Viscosity

chips. Contaminated hydraulic oil is the major cause of

Below 32F

SAE 20 W

hydraulic system failures. it is therefore advised that any

oil that is added or replaced be final filtered through a

F to 90F

SAE 30

ten micron filter (or finer) before entering the hydraulic

Above 90F

SAE 40

system. It is recommended that each storage container

be clearly marked - FOR USE IN HYDRAULIC SYSTEM

ONLY.

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