TM-9-2350-277-20-2

CARRIER M113A3, M577A3, M1059A3, M1064A3, M1068A3 AND M58

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL VOLUME 2 OF 6

TM-9-2350-277-20-2 - Page 173 of 783

TM 9-2350-277-20-2

PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING

LUBRICATION INSTRUCTIONS — Continued

0155 00

0155 00-153

Change 5

ITEM

NO.

INTERVAL

MAN-

HOUR

ITEM TO BE

CHECKED OR

SERVICED

CREWMEMBER

PROCEDURE

EQUIPMENT

NOT READY/

AVAILABLE

IF:

NOTE

Remember that when the nylon coating

on the spline drive ring teeth is new

or in good condition, the clearance

between the spline drive ring and the

flywheel internal spline is only a few

thousandths of an inch.

2)

When the spline drive coupling is

worn-out, you will be able to detect

the individual movement between

the spline drive ring studs and nuts

and flywheels’s clearance holes. This

movement is due to the actual wear of

thesplineteeth

.Themorewear

,the

more movement.

i.

If you should hear the metallic clanking

sound, as mentioned in any one of the

above inspection procedures, immediately

notify your direct support maintenance or

supervisor

j.

Using these three methods, you will easily

be able to tell the difference between

the muffled sound of a good spline drive

coupling and the metallic clanking of a

bad spline drive coupling. Detecting wear

of this kind in its early stages will reduce

down time and keep your M113A3 ready

for action.