TM-9-2815-205-24

6V53/6V53T ENGINES, DIESEL WITH CONTAINERS; MODEL 5063-5299, MODEL 5063-5392, MODEL 5063-5393 AND MODEL 5063-539L

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE

FEBRUARY 2013

TM-9-2815-205-24 - Page 689 of 856

ASSEMBLY - Continued

WARNING

Rings are extremely sharp. Do not grasp or graze sharp edges of oil control rings with

bare hands. Failure to comply may result in injury to personnel.

CAUTION

Do not spread rings more than necessary to slip over piston. Ring breakage and

overstressing will result.

NOTE

Upper oil control ring groove requires one thick ring and lower groove requires

two thin rings.

Install upper and lower oil control rings in lower groove by hand.

Scraper edges of all oil control rings must face downward (toward bottom of

piston) for proper oil control.

d.

Install new lower oil control ring (Figure 13, Item 13) in lower groove with gap 180 degrees from gap in

expander (Figure 13, Item 14) in groove C and then install upper oil control ring in lower groove with

gap 45 degrees from gap in other ring.

e.

Using piston ring tool, position new upper oil control ring (Figure 13, Item 9) over groove

(Figure 13, Item D). Position gap in oil ring 180 degrees from gap in expander (Figure 13, Item 15).

Press ring against gap side of expander to prevent ends of expander from overlapping. Align ring with

groove and release tension on remover and replace.

f.

Starting with bottom compression ring, install three new compression rings (Figure 13, Item 12) and

new fire ring (Figure 13, Item 11) using piston ring tool. Install fire ring with side marked “TOP" or side

with dark color dot toward top of piston (Figure 13, Item 10).

9

15

13

14

13

11

12

D

C

90°

90°

180°

10

LOWER

PISTON

RING

LOCATION

UPPER PISTON

RING LOCATION

MAINT_365

Figure 13.

Piston Ring Placement.

TM 9-2815-205-24

0094

0094-15