LINES GP-AIR 4519543 - Caterpillar

Removal Procedure
Start By:
Remove valve mechanism cover. Note: Refer to Specification UENR03421 "Engine Design" for non-specified engine Torque Values.
Illustration 1 g03338660
Remove bolts (3) and tube assembly (4).
Remove nuts (2) and brackets (1).
Illustration 2 g03338669
Remove bolts (5) from rocker shaft assembly (6).
Remove rocker shaft assembly (6) from cylinder head (9).
Place an identification mark on pushrods (8) in order to show the location. Remove pushrods (8) from cylinder head (9). Note: Identification will ensure that the pushrods can be reinstalled in the original positions. Do not interchange the positions of used pushrods.
Remove valve bridge arms (7). Installation Procedure
Install rocker shaft assembly (6) and pushrods (8) in the reverse order of removal.
Install bolts (5) and tighten to a torque of 49 to 55 N m (37 to 41 lb ft).
Position brackets (1) and install nuts (2). Tighten nuts (2) to a torque of 24 to 27 N m (18 to 20 lb ft) .
Position tube assembly (4) and install bolts (3). Tighten bolts (3) to a torque of 9.8 to 11.2 N m (87 to 100 lb in).
Adjust the inlet valve lash and the exhaust valve lash to 0.13 to 0.17 mm (0.005 to 0.007 inch). Refer to Testing and Adjusting, "Engine Valve Lash - Inspect/Adjust".