Notes - LO-9-2320-363-120019

NOTES

1. INTERVALS

This instruction applies only to vehicles in normal operation. Lubricate more frequently to compensate

for unusual/adverse conditions, such as high or low temperatures, fording in water over 20 inches

deep, or exposure to sand or dust. Intervals for change of filters (fuel, oil, air, etc.) are unchanged.

Lubricants that have become contaminated will be changed regardless of scheduled intervals. Intervals

for items under warranty will not be changed from those recommended by the manufacturer until

after the warranty has expired. When practicable, lubrication services will be made to coincide with

the vehicle Unit PMCS.

The calendar intervals may be extended during periods of low activity. If extended, adequate preservation

precautions must be taken.

To validate the warranty on the M915A2 and the M916A1, an initial (annual) service must be completed

at 5,000 miles. All other services will be scheduled from the initial 5,000-mile service.

2. GREASE POINTS

a. Hold pressure gun on fittings until new grease appears. This will ensure that all the old contaminated

grease has been forced out. Take weight off suspension equalizing beam during lubrication to

ensure uniform application of grease into the trunnion bushing. When lubricating front and rear

suspension, raise vehicle to take weight off the suspension to permit the lubrication to reach

all bearing surfaces. During lubrication, rotate tail roller.

b. Front Wheel Knuckle Joint (M915A2), Trunnion Bearing and Trunnion Joint (M916A1)

(1) M915A2 Knuckle Pins - Initially grease at 5,000 miles; thereafter every 10,000 miles or

semiannually. Apply grease to knuckle grease fittings.

(2) M916A1 Trunnion Bearing - To lubricate, remove bottom plug and grease top fitting until

new grease comes out of the bottom. When new grease comes out, wipe clean and reinstall

plug. Lubricate every 5,000 miles or semiannually.

(3) M915A2 Front Axle, Wheel Bearings - Check daily. Remove rubber plug and add oil until

visible in sight glass.

(4) M915A2 and M916A1 Inner and Outer Bearings - Inspect and adjust inner and outer bearings

on both sides of axles every 75,000 miles or annually. Before installing wheel bearings onto

spindle, coat bearing journals with a film of grease to defer fretting corrosion.

(5) M916A1 Front Axle Only - Remove, clean, repack, and adjust wheel bearings every 75,000

miles or annually.

c. Tie Rod

(1) M915A2 - Every 20,000 miles or semiannually wipe fittings clean, then pump new grease

into tie rod ends until fresh grease is seen at the ball stud neck.

(2) M916A1 - Every 5,000 miles wipe fittings clean, then pump new grease into tie rod ends

until fresh grease is seen at the ball stud neck.

LO 9-2320-363-12-19

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