Exhaust Valve Seat Inserts - TM-55-1905-219-14-40023

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TM-55-1905-219-14-4 Landing Craft Utility (LCU) 1667 Class Boston Hull Numbers 1667-1670 NSN 1905-00-168-5764 Manual

AIR INTAKE SYSTEM SPECIFICATIONS

TM 55-1905-219-14-4

Table of Specifications. (continued

ENGINE PARTS

MINIMUM

MAXIMUM

LIMITS

(Standard Size, New)

(inches) (cm)

Exhaust Valve Insert

Counterbore:

Diameter ................ .......................... 1.2600

3.2004

1.2610

3.2029

Depth ................... ............................ .. .3380

.8585

.3520

.8941

Exhaust Valve Seat Inserts

Outside diameter ........... ....................... 1.2615

3.2042

1.2625

3.2068

Seat width ............................................. .0469

.1191

.0938

.2383

.0938

.2383

Valve seat runout...................................

.0020

.0051

.0020

.0051

Exhaust Valves

Stem diameter .............. ........................ .3100

.7874

.3105

.7887

.3090

.7849

Valve head-to-cylinder

head:

30 ................ ................................. .023 recess

.0584 recess

.006 protr.

.0152 protr.

Valve Guides

Height above cylinder

head .................... ............................

.8800

2.2352

.8800

2.2352

Diameter--inside ........... ........................

.3125

.7938

.3135

.7963

.3140

.7976

Clearance--valve-

to-guide ............................................

.0020

.0051

.0035

.0089

.0050

.0127

Valve Bridge Guides

Height above cylinder

head ................... ............................. 2.0400

5.1816

2.0400

5.1816

Rocker Arms and Shafts

Diameter--rocker shaft ...........................

.8735

2.2187

.8740

2.2200

Diameter--inside

(rocker arm bushing) .........................

.8750

2.2225

.8760

2.2225

Clearance--shaft-to-

bushing ................ ............................

.0010

.0025

.0064

.0040

.0102

Cam Followers

Diameter ............................................... 1.0600

2.6924

1.0610

2.6949

Clearance--follower-

to-head ................ ............................ .0010

.0025

.0030

.0076

.0060

.0152

Rollers and pins:

Clearance--pin-to-

bushing ................... ...................... .0013

.0033

.0021

.0053 .010 Horiz .0254 Horiz

Side clearance--

roller to follower ............................... .0150

.0381

.0230

.0584

.0230

.0584

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