TM-9-2815-237-34 HMMWV Engine Direct Support & General Support Maintenance Manual Download
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TM 9-2815-237-34 2-16. CYLINDER BLOCK REPAIR (Cont’d) k. 1. m. n. o. p. q. r. s. ● ● ● ● CAUTION All five bearings must have an oil hole at the approximate ten o’clock position, when viewed from the front with the block in an upside down position, or engine damage will result. The seam in the bearing must always be located in the lower half of the block face, when viewed with the block in an upside down position, or engine damage will result. The front bearing has an additional oil hole which will be located between the six and seven o’clock positions. This bearing also has a notch which must be positioned toward the front of the block, or engine damage will result. All oil holes in camshaft bearings must be aligned with grooves in camshaft bearing bores after installation, or engine damage will result. Using driver handle and adapter J 6098-11, align number one camshaft bearing (4) so oil hole (5) is facing down and oil hole (6) is at or near the ten o’clock position and install into cylinder block (1). Remove installation tools and check to be sure oil holes (5) and (6) align with groove (3) in bearing bore (2). Using driver handle and adapter J 6098-12, align number five camshaft bearing (9) so oil hole (10) is at or near the ten o’clock position and install into cylinder block (1). Remove installation tools and check to be sure oil hole (10) is aligned with groove (7) in bearing bore (8). Install number two camshaft bearing (11) on adapter J 6098-11 and position in cylinder block (1) so oil hole (12) is at or near the ten o’clock position. Install pilot in number one camshaft bearing (4) and install threaded rod through pilot and thread into adapter. Hold threaded rod stationary and tighten long hex nut to install camshaft bearing ( 11) in cylinder block (1), remove installation tools, and check to be sure oil hole (12) is aligned with groove (16) in bearing bore (13). Repeat steps m. and n. for number three camshaft bearing (17). Working from rear of cylinder block (1), repeat steps m. and n. for number four camshaft bearing (18). Apply anaerobic sealing compound to outside diameter of rear plug (19) block (1) until flush or 1/32-in. (0.79 mm) deep. Install five main bearing caps (15) on cylinder block (1) and secure with Install cylinder block (1) on engine stand. and install in cylinder twenty capscrews (14). 2-50