ROLLER AS 2845456 - Caterpillar

PREPARING TO DISCONNECT EXHAUST MANIFOLD FROM CYLINDER HEAD
1-Fuel injection lines (two per cylinder head). 2-Plugs (four per cylinder head). 3-Shield.3. Remove shield (3) and remove the exhaust manifold flange lower four bolts. There is a shield support under each pair of bolts. At installation tighten bolts to torque of 100-120 lb. ft. (13,8-16,6 mkg).4. Remove valve mechanism. See covering topic.
PREPARING TO REMOVE CYLINDER HEAD (D399 Engine Illustrated)
4-Pipes (two per cylinder head). 5-Regulator housing. 6-Nuts and washers (sixteen per cylinder head). 7-Bolts (six per cylinder head).5. When the right front cylinder head is being removed, water temperature regulator housing (5) must be removed. See the covering topic.6. Use crossbar (9) from the 8B7548 Push Puller with two 1B4205 Nuts and a few flat washers attached to rocker arm studs (8) as shown. Attach a 1" forged eyebolts (10) solidly to the crossbar and use a hoist to lift cylinder head (11) from the engine. Approx. weight 190 lbs. (86 kg).
REMOVING CYLINDER HEAD
8-Rocker arm studs. 9-Crossbar. 10-Forged eyebolt. 11-Cylinder head. 12-Head gasket.7. Inspect the seals, and ferrules. Always install new head gaskets (12).
When installing the head on the cylinder block, see that the ferrules and seals are installed properly and start into the recessed holes in the cylinder head. Rock the head gently until it seats flat on the head gasket.
8. Replace manifold gaskets if necessary. Tighten any loose cylinder head taperlock studs to torque of 90-110 lb. ft. (12,4-15,2 mkg). The compression release pawl (13) on earlier engines should be in the lower position before installing the head, see the topic COMPRESSION RELEASE MECHANISM.
COMPRESSION RELEASE PAWL
13-Pawl.
CYLINDER HEAD STUD NUT TIGHTENING SEQUENCE9. Apply 9M3710 Anti-Seize to the stud threads. Install hold down nuts and washers (6). Tighten the nuts in sequence shown in illustration to a torque of 150 10 lb. ft. (20,7 1,4 mkg). Then tighten a second and third time to 250 10 lb. ft. (34,6 1,4 mkg).10. Complete the installation in reverse order of removal. Inlet valve clearance is .015 in. (0,38 mm), exhaust valve clearance is .035 in. (0,89 mm). The compression release clearance on earlier engines is .025-.030 in. (0,64-0,76 mm). See the LUBRICATION AND MAINTENANCE GUIDE.If taperlock studs for valve rocker shaft brackets are replaced, install them to torque of 35-45 lb. ft. (4,8-6,2 mkg).Water Directors
There are eight water directors (1) pressed into each cylinder head to direct the flow of coolant. On the exhaust side, coolant is directed toward the precombustion chambers and the exhaust valve ports; and on the inlet side, toward the other side of the valve ports, as indicated by the V-marks. Water directors are pressed into place on the heads after aligning the notch on the director with the V-mark on the head.
WATER DIRECTORS
1-Water director. 2-Ferrule. 3-Seal.The seals (3) and copper ferrules (2) between the head and top of the block are replaceable. Coat the inner surface of the seal with soap and place the groove in the seal over the ridge on the ferrule