OVERHAUL (Cont) - TM-55-1905-220-14-110589

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OVERHAUL (Cont)

TM-55-1905-220-14-11 Landing Craft Utility LCU 1671-1679 NSN 1905-01-009-1056 Manual

OVERHAUL (Cont)

TM 55-1905-220-14-11

5-143. COMPRESSOR-HVAC-MAINTENANCE INSTRUCTIONS (Continued).

LOCATION

ITEM

ACTION

REMARKS

OVERHAUL (Cont)

FACTORY

MAXIMUM WEAR

PART NAME

Maximum

Minimum

Before Repair

inches

Connecting Rod

Bearing dia.

1.6255

4.1287

.002

.005

(after assembly)

Bearing thickness

.06225

.15812

.001

.003

Crankpin dia

1.6233

4.1232

.003

.008

Cylinders

Bore

2.501

6.352

.003

.008

Piston (dia.)

2.4980

6.3449

.003

.008

Wrist Pin (dia.)

.7498

1.9045

.001

.003

Wrist Pin Bushing

.7507

1.9068

.001

.003

Piston Ring End Gap

.017

.043

.007

.018

.030

.076

(comp. and oil)

Piston Ring Side

.0025

.0064

.001

.003

.008

Clearance (comp.

and oil)

NOTE

If bearing inserts are damaged, but crankshaft is not worn, it is only necessary to replace inserts. Do not file bearing

caps. Place inserts in the connecting rod and cap so that toeing knobs on inserts fit into notches on rod and cap.

Lubricate insert bearings and crankpin freely before installing caps.

Piston

Pushfit into place.

Pressure for a

pins

dry pin is 10 to

(55)

25 lb (44.5 to

111.2 N).

5-1504