d. Install - TM-9-6115-604-34

Figure 9-14. Removing and Installing Cam Rollers and Pins

SECTION III. MAINTENANCE OF CAMSHAFTS, BUSHINGS, AND COVER GEARS

TM-9-6115-604-34 Generator Set Diesel Engine Driven Tactical Skid Mtd 5 Kw. 1 Phase-2 Wire 1 Phase -3 Wire 3 Phase -4 Wire 120. 120/240 and 120/208 Volts Manual
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TM 9-6115-604-34 NAVFAC P-8-633-34 (20) Replace worn cam follower sockets (21) by pressing out the old socket. Press in a new socket being sure that the socket seats in the bore of the cam follower (12 or 13). (21) Inspect the cover (7) for cracks, warping, or damaged gasket surface. Remove slight warping or imperfections using a flat mill file. Replace the cover if it is cracked. NOTE Cummins Engine has obsolete this special tool ST-1283 without replacement. (22) Install the rollers (18 or 20) in the cam follower (12 or 13) using an arbor press and roller pin block ST-1283 as follows: (a) Position the cam follower (12 or 13), rollers (18 or 20), and pin (17 or 19) in ST-1 283 under the ram of the press. (b) Carefully align the roll pin hole and lubrication hole of the pin (17 or 19) with the holes in the follower (12 or 13). (c) Insert a 0.010 inch (0.26 mm) feeler gage between the follower (12 or 13) and roller (18 or 20) as shown in Figure 9-14. Do not allow the feeler gage to extend over the shaft hole in the follower. (d) Being careful to align the roller (18 or 20) with the pin, press the pin (17 or 19, Figure 9-13) into the follower (12 or 13) until the roll pin hole is aligned with the hole in the follower. (e) Remove the feeler gage and check the side clearance. The side clearance shall be 0.009 to 0.024 inch (0.23 to 0.61 mm). (f) Install the roll pin (16) through the follower (12 or 13) and pin (17 or 19). (23) Install new cup plugs (15) in the cam follower shafts (14) using a 0.125 inch (3.18 mm) pin punch and arbor press. CAUTION When assembling the followers (12 and 13) to the shaft (14), be sure that the elongated capscrew hole In the shaft will face the front of the engine when Installed. The elongated hole allows passage of lubricating oil. Severe damage will result from running the engine with an Improperly Installed shaft. (24) Using new retaining rings (11), assemble the followers (12 and 13) to the shaft (1 4), observing the match- mark made before disassembly. (25) Check the capscrews (3, 4, and 9) for stripped or damaged threads. Replace damaged or stripped capscrews. (26) Inspect the slot in each capscrew (9) for distortion due to overtightening. Replace the capscrews if the slots are distorted. d. Install. (1) If removed, install bushings (10, Figure 9-13) in the cylinder block. CAUTION Be sure the elongated capscrew hole In the shaft (14) faces the front of engine when the shaft Is Installed. The elongated hole allows passage of lubricating oil. Severe damage will result from running the engine with an Improperly Installed shaft. (2) Observing the match-marks made during removal (the elongated hole in the shaft (14) must face the front of the engine), position the follower assembly on the bushings (10). (3) Using flat washers (6), install capscrews (9), and tighten to 29 to 31 pound-feet (39 to 42 newton-meters). (4) Observing the match-marks, install the push rods (1 and 2) taking care that the ball-end of the push rods are properly seated in the sockets (21). (5) Install the rocker arms in accordance with paragraph 9-10. (6) Using a new gasket (8), position the follower cover (7) to the cylinder block, and install flat washers (6), lockwashers (5), and capscrews (3 and 4). Cross-tighten the capscrews to a final torque of 30 to 35 pound- feet (41 to 47 newton-meters). 9-29

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