CYLINDER HEAD & VALVES - CONT - TM-5-3820-256-24-5

CYLINDER HEAD & VALVES - CONT - TM-5-3820-256-24-5_199

CYLINDER HEAD & VALVES - CONT - TM-5-3820-256-24-5_201

TM-5-3820-256-24-5 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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SERVICE MANUAL CYLINDER HEAD & VALVES Section 3 6. Inspect cylinder head COOLANT DIRECTORS for RESTRICTIONS or LOOSENESS. a. Visually check for RESTRICTIONS. b. Tap or pull directors by hand to check for LOOSENESS. c. Remove loose or restricted coolant directors. Use a slide hammer (1, Fig. 24) with a small enough jaw to hook under coolant director (2) "opening" as shown in Fig. 24. d. New coolant directors should be tapped into place with a small hammer and block. They must be recessed 1.5 mm (.06") below the bottom deck of the cylinder head. e. Aim coolant directors at angles shown in Fig. 25. Figure 24. - Coolant Director Removal 1. Slide hammer 2. Water director Figure 25. - Aiming Coolant Directors 1. Coolant Director 2. Exhaust Valve 3. Coolant Director 4. Intake Valve 5. 23Angle 6. 55Angle 7. Inspect Valve Guides as follows: a. After cleaning ALL valve guide bores, position a light at bottom of valve guide bore; examine walls for burning, cracking or excessive wear. b. Measure I.D. of valve guide at several points. VALVE GUIDE I.D. LIMITS ARE: 9.500 mm (0.3740 in) 9.525 mm (0.3750 in) c. Replace any guides which are: 1. Burned 2. Cracked 3. Worn Beyond Limits 4. Without Rifling d. Remove valve guides with valve guide remover (see Tool List for tool number). CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 20

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