Table 1. Engine Repair and Replacement Standards

Table 2. Engine Repair and Replacement Standards.

Table 1. Engine Repair and Replacement Standards - Continued.

Maintenance Manual For Crusher, Roll: Diesel And Electric Driven, Wheel Mounted 75 Ton Per Hour - Vol2 Page Navigation
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Table 1. Engine Repair and Replacement Standards - Continued.

Desired

Maximum

Manufacturer's

clearance

allowable

dimensions and

tolerance in

wear

clearance

inches

Minimum

Maximum

Minimum

Maximum

Seat angle ................................................................. 45o

Stem clearance .............................................................. .................... ....................... .......... 0.0015 ..................

........... 0.0021

Valves Exhaust

Length.....................................................................7.274........... 7.295

Stem diameter.......................................................- 0.494........... 0.495

Head diameter ....................................................... 2.045......... 2.0655

Seat angle ...................................................................... ............... 45o

Stem clearance .............................................................. .................... ............ 0.0035 .......... 0.0055 ..................

............. 0.002

Inserts, Exhaust Valve

Outside diameter .................................................. 2.2535......... 2.2545

Counterbore ...........................................................2.250........... 2.251

Valve springs

Outside diameter outer .......................................... 1.8876......... 1.9075

Outside diameter-inner ...........................................1.355........... 1.375

Wire gauge ..................................................................... ........... 0.225

Spring length valve closed-outer ...................................... .......... 2.750

Spring length valve closed-inner ..................................... ........... 2.594

Spring length valve open-outer ....................................... ........... 2.187

Spring length valve open-inner ........................................ ........... 2.031

Spring load valve closed-outer ........................................ .................... ............. 85 lbs ............ 95 bs ..................

.............. 7 lbs

Spring load valve closed-inner ........................................ .................... ............. 41 lbs ............49 lbs

Spring load valve open-outer .......................................... ..................... ............ 192 bs ..........208 lbs ...................

.............. 9 lbs

Spring load valve open-inner .......................................... .................... ............. 95 lbs .........105 Ilbs

Sleeves

Inside diameter .................................................... 5.5625......... 5.5645

Pistons

Pin hole diameter ................................................. 1.7498......... 1.7500

Ring groove diameter

1st; 2d; 3d ...........................................................4.943........... 4.953

4th; 5th . .............................................................. 5.011........... 5.021

Ring groove width

1st; 2d; 3d ................................................................... ........... 0.156

4th .................................................................... 0.2505......... 0.2515

5th ..................................................................... 0.188........... 0.189

Ring land diameter

- 1st ....................................................................... 5.519........... 5.523

2d .......................................................................5.625........... 5.529

3d; 4th .................................................. ............5.530........... 5.534

Piston clearance 0.008 (two 0.004

feelers) 5-10 lb pull.

Rings

Ring width:

1st ........................................................ ........... 0.1485......... 0.1490

2d; 3d .............................................................. 0.1500......... 0.1505

4th ..................................................................- 0.2485......... 0.2490

5th .................................................................... 0.1860......... 0.1865

Ring thickness

1st; 2d; 3d ...........................................................0.268........... 0.278

4th; 5th ....................................................................... ............ 0.210

Ring gap clearance ......................................................... .................... .............. 0.018 ............ 0.032

Ring side clearance

0.008

1st; 2d; 3d ................................................................... ....................

4th; 5th- ................................................. .................... .................... ............ 0.0015 .......... 0.0030

0.0026

AGO 8456A

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