Figure 6-27. Installing exhaust valve insert.

Figure 6-24. Allowable head thickness of refaced

Figure 6-32. Valve position in block.

TM-5-3431-205-15 Welding Machine ARC Generator Gasoline Engine Driven 300 AMP DC (Libby Model LE 300) (Libby Model LEW-300) (Libby Model LEB-300) Manual
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Figure 6-27. Installing exhaust valve insert.

Figure 6-29. Indicating valve seat.

Figure 6-28. Grinding valve seat.

Figure 6-30. Valve guide location in block.

(10) Coat valve stem with light coat of

engine oil to facilitate reassembly of valve me-

chanism.

(11) Assemble and install caps (5, fig. 6-

11) screws (6) and tappets (7) in cylinder

block.

(12) Install valves (4), springs (3) and

retainers (2) in cylinder block. Compress valve

spring lifter and insert locks (1) in place.

(13) After installation of crankshaft gear

(para 6-10) check camshaft end play as shown

in fig. 6-33. End play shall not exceed maxi-

mum limit given in table 5-1.

f. Adjustments. To adjust valve tappets,

Figure 6-31. Narrowing valve seat.

proceed as follows:

106

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