CHAPTER 3 OPERATOR'S MAINTENANCE INSTRUCTIONS

CHAPTER 3

OPERATOR'S MAINTENANCE INSTRUCTIONS

Section I. LUBRICATION INSTRUCTIONS

(5) The oil may require changing more frequently

3-1.General

than usual because of contamination by dilution. Sludge

This section contains lubrication instructions which are

formation will increase under cold weather operating

supplemental to and not specifically covered in the

conditions.

lubrication order.

(6) Refer to the current lubrication order for the

3-2.Detailed Lubrication Information

correct oil to use.

a. General. Keep all lubricants in closed containers

e. Air Cleaner.

and store in a clean dry place away from external heat.

(1) Daily, check the amount and condition of the

Allow no dust, dirt, or other foreign material to mix with

oil in the air cleaner cup. If the oil level is low, or if the

the lubricants.

oil is dirty, service the air cleaner.

b. Cleaning. Keep all external parts not requiring

(2) To service the air cleaner proceed as follows:

lubrication clean of lubricants. Before lubricating the

equipment, wipe all lubrication points free of dirt and

(a) Loosen and remove wingnut and washer.

grease. Clean all lubrication points after lubrication to

(b) Separate the air cleaner top from the lower

prevent accumulation of foreign matter.

body as shown in figure 3-2.

c. Points of Lubrication. Service the points of

lubrication at proper intervals. Refer to the current

lubrication order (LO 10-3930-624-12).

d. Crankcase Oil Level.

(1) The crankcase oil level must be checked

every ten hours.

(2) In order to obtain an accurate measurement

of the level of oil in the crankcase, the engine must be

stopped and the vehicle parked on level ground.

(3) After stopping the engine, allow at least five

minutes for the oil to drain back into the oil pan.

(4) Withdraw the dipstick, which is located on the

left side of the engine (fig. 3-1) and wipe clean.

Reinsert all the way and then remove for a true reading.

Add oil as necessary to bring the oil level to the FULL

mark on the dipstick.

Figure 3-2. Air cleaner.

(c) Empty the oil from the cup and clean with

solvent; dry thoroughly.

(d) Fill the cup to the indicated level with fresh

oil of the same type and quality as used in the engine

crankcase.

Figure 3-1. Checking crankcase oil level.

(e) Position the air cleaner in place, secure

with the washer and wingnut.

3-1