Mack Trucks — 5-101.bk (EN)

5-101.bk Page 32 Friday, March 17, 2006 11:05 AM Figure 5-38 — Checking Valve Guide Extension 1 Refer to Figure 5-39. 2 5. Using valve guide reamer J 37481 (1), ream new valve guide (2) to dimension. 200295a Figure 5-37 — Valve Guide Remover J 37482 1 2. Press out old valve guides from cylinder head. 3. Check valve guide bore in the cylinder head for wear, cracks or other damage. Clean surfaces thoroughly and check ID measurement. 2 VALVE GUIDE INSTALLATION 1. Insert new valve guide into valve guide installer J 37809. 2. Oil OD of new guide before installation. 3. Press new valve guide into top of cylinder head using tool J 37809. 200296a Refer to Figure 5-38.

Figure 5-39 — Reaming Valve Guide 4. Using depth gauge, check extension of valve guide from valve spring seat to top end of the guide. Page 5-32 200 BENCH PROCEDURES 1. Valve guide remover J 37482 2. Cylinder head 1. Valve guide reamer J 37481 2. Valve guide