ROCKER ARM COVERS

TM-5-6115-584-12 Generator Set Diesel Engine Driven Tactical Skid Mtd. 30 Kw 3 Phase 4 Wire 120/208 and 240/416 Volts Manual
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TM 5-6115-584-12 NAVFAC P-8-622-12 TO-35C2-3-456-1 TM-05682C-12 c. Bend lock tabs (14) down and remove four screws (13) attaching manifold to cylinder heads and remove manifold (16). Clean away any gasket material (15) stuck to cylinder heads or manifold. d. Repair. Remove manifold as given above and replace gasket if leaks occur. e. Install. Install intake manifold (16) and new gasket (15) to cylinder head and secure with two screws (13) and lock tabs (14). Torque screws 13 to 15 ft-lbs. Bend lock tabs (14) up to prevent screws (13) from loosening. Install good heater elements (18) into heater adapter (24). If heater adapter threads are damaged, replace adapters. Install heater adapter (24), gasket (25) and lead (19) on intake manifold and secure with spacer (33), washers (21 and 22) and screw (20). Reconnect lead (17) to heater. NOTE If heater adapter is removed, make certain new gaskets and spacer are used for reassembly. 4.44. ROCKER ARM COVERS. a. Inspect (see figure 4-38). Inspect rocker arm cover (3) for dents or other physical damage. Check for leaks espe- cially at the gasket (4) between cover and cylinder head (5). Check that cover (3) is securely attached to cylinder head with screws (1), and lockwashers (2). b. Remove. Remove shroud (13, figure 3-9) per para- graph 4-17b. Remove four screws (1, figure 4-38) and lock- washers (2) attaching each rocker arm cover (3) to cylinder head (5) and remove cover carefully. Clean gasket (4) from both cover and cylinder head. c. Service. Every 500 operating hours, remove rocker arm covers and clean oil lines. Flush oil lines with clean diesel fuel and clean small holes with a fine wire. See figure 4-39. NOTE Adjust valve rocker arms and clean breather while cover is off. d. Replace. Place gasket (4, figure 4-38) in position on each cylinder head. Install each rocker arm cover (3) to cylinder head and secure with four screws (1) and lockwash- ers (2). Tighten screws 7 to 8 ft-lb. NOTE Always use a new gasket when installing rocker arm covers. 4-45. BREATHER. a. Inspect (see figure 4-40). Inspect exterior of breather for damage. Inspect that tube (2) is securely attached to breather valve (6). Inspect that tube (12) is securely seated in engine (13), Figure 4-39. Cleaning Rocker Arm Cover Oil Line b. Service. (1) Remove tube (2) from breather valve (6). (2) Loosen screw (3) and remove clamp (4). (3) Remove insulators (5) and pull off vlave (6), screen (8) and filter (10). (4) Wipe parts with clean cloth. Wash filter mesh (10) and valve (6) in dry cleaning solvent Fed, Spec. PD 680. c. Remove, . (1) Loosen clamp (1) and remove tube (2) from valve (6). (2) Remove clamp (4) by loosening screw (3). (3) Remove valve (6), screen (7), retainer (8) and packing (9), (4) Remove filter (10) and cup (11 ) from tube ( 12). (5) Remove tube ( 12) from engine ( 13). d. Install. (1) Assemble filter ( 10) and cup (11) in breather tub (12). 4-50 Change 9

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