Chart 3-1. operator's Troubleshooting

Chart 3-1. operator's Troubleshooting

Corrective Action

Probable Cause

Malfunction

Battery electrolyte level low.

1. Engine will not crank.

Service battery ( para 3-15 b)

a. Improper starting procedure.

a. Check and follow operating

2. Engine cranks but will not start.

procedure (para 2-11).

b. Fill fuel tank.

b. Out of fuel.

a. Remove obstruction. (para 3-11 a)

a. Obstruction in front of radiator.

3. Engine overheats.

b. Coolant level low.

b. Service radiator (para 3-11 b)

c. Service engine crank case (para 3-

c. Oil level low.

3(d)

4. Tractor will not move in forward

Transmission oil level low.

Service transmission (para 3-3 e)

or reverse.

Reduce loads. Operate according to

Tractor being overloaded or im-

5. Transmission overheats.

instructions (para 2-12, 2-15 thru

properly operated.

2-21).

Service air cleaner (para 3-12 b).

Clogged air cleaner.

6. Engine lacks power under load.

Service tires (para 3-14).

Tires under inflated.

7. Difficult steering.

Section V. OPERATOR'S MAINTENANCE OF TRACTOR

c o u n t e r c l o c k w i s e to the bleedoff position.

3-8. General

When pressure in system has relieved, depress

The following paragraphs describe the respon-

c a p and turn counterclockwise to remove.

sibilities of the operator in maintaining the tractor.

Failure to heed this warning may result in

These responsibilities are limited to servicing the

serious personal injury from rapidly escaping

following:

coolant. If system is extremely hot, use a rag to

a. Engine. Refer to paragraph 3-9.

hold the radiator cap when removing.

b. Transmission. Refer to paragraph 3-10.

a. External Cleaning. Clean dirt, insects, trash,

c. Radiator. Refer to paragraph 3-11.

and other foreign matter from front side of radiator.

d. Air Cleaner. Refer to paragraph 3-12.

Use compressed air or a stream of water under low

e. Fuel Tank. Refer to paragraph 3-13.

pressure directed

f r o m the engine side of the

f. Tires and Tubes. Refer to paragraph 3-14.

radiator. Clean radiator cap by spraying a stream

g. Battery. Refer to paragraph 3-15.

of water (hot if possible) through holes in valve

3-9. Engine

cage while moving valve up and down with a blunt

a. Cleaning. Insure that the engine compartment

wood stick.

of the tractor is kept free of foreign objects and

b. Adding Coolant. Check level of coolant daily.

materials. As often as conditions may require, wipe

Add coolant, if required, using a premixed solution

off ignition cables, distributor cap, and porcelain

o f 50 percent a n t i f r e e z e conforming to Federal

insulators of spark plugs with a clean cloth. Dust on

Specification 0-A-548 and 50 percent water. Fill

these parts can attract moisture which will result in

radiator to within one inch of top of filler neck.

d i f f i c u l t starting and poor performance. Clean

Replace radiator cap securely.

away lubricants as described in paragraph 3-3 b .

c. Draining, Cleaning, and Refilling Radiator.

b. Lubrication. Check crankcase oil level daily

Drain, clean, and refill the radiator (and cooling

(more often under severe operating conditions).

system) annually as follows (fig. 3-2):

Add lubricating oil as required. Refer to paragraph

(1) Drain system. Operate engine at a fast idle

3-3 d.

until normal operating temperature is reached. A

3-10. Transmission

fast idle will stir Up any loose rust, scale, and other

in cooling system. Place an ob-

struction in front of radiator, if required, to bring

engine temperature up to at least 180 degrees F.

Stop the engine. Remove radiator cap, and open

3-11. Radiator

drain cocks-in engine block and radiator. Allow

Warning: When removing radiator cap when

cooling system to drain completely.

cooling system is hot, turn cap very slowly

3-4