CARRIER-WEIGHT 4P7693 - Caterpillar

Remove Cylinder Heads
start by: a) remove exhaust manifoldb) remove air inlet manifoldc) remove valve coversd) remove rocker shafts and push rodse) remove fuel injection nozzles1. Remove the coolant from the cooling system. 2. Remove clamp (2) from the water sleeves (1) in each cylinder head. Push water sleeves into timing gear cover with tool (A). 3. Remove bolts (3) and (4) that hold cylinder heads to cylinder block.
Make sure the fuel injection nozzles are removed before removing the cylinder head. The fuel injection nozzles go through the cylinder head and the nozzle tips can be broken off if the nozzles are not removed from the heads.
4. Install two 5/16"-18 NC forged eyebolts in the cylinder head. Fasten a hoist and remove cylinder head. Weight of the cylinder head is 85 lb. (39 kg).Install Cylinder Heads
1. Clean the contact surfaces of the cylinder head and cylinder block. Make sure the surfaces are clean and dry. Install a new cylinder head gasket. Clean the bore in the cylinder head for the water sleeves. Put oil on the seals on the water sleeves.2. Install two 5/16"-18 NC forged eyebolts in the cylinder head. Fasten a hoist and put the cylinder head in position on the cylinder block. 3. Put 4S9416 Anti-Seize Compound on the bolt threads and install the bolts that hold the cylinder head in place. Tighten the bolts in the cylinder head according to the following HEAD BOLT CHART.
BOLT HEAD IDENTIFICATION4. Install water sleeve into cylinder head with tool (A). Install the clamp on the water sleeves.5. Fill the cooling system with coolant to the correct level. end by: a) install fuel injection nozzlesb) install rocker shafts and push rodsc) install valve coversd) install air inlet manifolde) install exhaust manifoldDisassemble Cylinder Heads
start by: a) remove cylinder heads 1. Fasten a hoist and put the cylinder head in position on tool (A). Use adapter plates (1) from tooling (A) to hold the head in place. 2. Put tension on the valve spring with tool (C) and remove the locks.3. Remove tool (C), retainer, spring, washer, spacer, and valve from the cylinder head. Put identification on the valve as to its location in the cylinder head. 4. Check the spring force with tool (B). For the correct spring force, see the topic VALVES in the SPECIFICATIONS.5. Do Steps 2 through 4 again for the remainder of the valves. 6. Remove the exhaust valve seat inserts with tooling (D). The valve guides are part of the cylinder head. Measure the bore in each valve guide .75 in. (19.0 mm) from the outside edge on both ends of each valve guide. The bore must be .3745 .0005 in. (9.512 0.013 mm). The maximum permissible bore is .3760 in. (9.550 mm). Valve guides worn more than the maximum specification can be made to the original size by knurling. To knurl the valve guides, see the topic CYLINDER HEAD AND VALVE COMPONENTS in the RECONDITIONING PROCEDURES.Assemble Cylinder Heads
1. Clean and remove all foreign