0308728 JOHNSON SCREW,Cylinder head

Table 1
Required Tools
Tool Part Number Part Description Qty
A 524-9375 Tool As 1 Start By:
Remove the engine enclosure. Refer to "Engine Enclosure - Remove and Install".
Remove the enclosure (cooling system package). Refer to "Enclosure (Cooling System Package) - Remove and Install".
Remove the muffler. Refer to "Muffler - Remove and Install".
Remove the main hydraulic pump. Refer to "Main Hydraulic Pump - Remove and Install".
Remove the swing pump. Refer to "Swing Pump - Remove and Install".
Remove the charge pump. Refer to "Gear Pump (Charge) - Remove and Install".
Personal injury can result from hot coolant, steam, and alkali.At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.Remove cooling system pressure cap slowly to relieve pressure only when engine is stopped and allow sufficient time for the cooling system to cool.Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.
Personal injury can result from contact with refrigerant.Contact with refrigerant can cause frost bite. Keep face and hands away to help prevent injury.Protective goggles must always be worn when refrigerant lines are opened, even if the gauges indicate the system is empty of refrigerant.Always use precaution when a fitting is removed. Slowly loosen the fitting. If the system is still under pressure, release it slowly in a well ventilated area.Personal injury or death can result from inhaling refrigerant through a lit cigarette.Inhaling air conditioner refrigerant gas through a lit cigarette or other smoking method or inhaling fumes released from a flame contacting air conditioner refrigerant gas, can cause bodily harm or death.Do not smoke when servicing air conditioners or wherever refrigerant gas may be present.Use a certified recovery and recycling cart to properly remove the refrigerant from the air conditioning system.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, PERJ1017, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Drain the coolant. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the correct draining and filling procedures.
Turn the fuel shutoff valve to OFF position.
Recover the refrigerant. Refer to Combined Manual, SENR5664, "Air Conditioning and Heating R134a for All Caterpillar Machines" for the recovery and the charging procedure. Refer to Special Publication, NENG2500, "Air Conditioning Tools" for the correct tools.
Drain the engine oil. Refer to Operation and Maintenance Manual, "Engine Oil and Filter - Change" for the correct draining and filling procedures.
Illustration 1 g06535259
Use two people to remove cover assembly (2). The weight of cover assembly (2) is approximately 21 kg (46 lb). Remove bolts (1) and cover assembly (2).
Use two people to remove cover assembly (3). The weight of cover assembly (3) is approximately 21 kg (46 lb). Remove bolts (4) and cover assembly (3).
Illustration 2 g06535260
Remove bolts (6) and cover assembly (5).
Illustration 3 g06535263
Disconnect hose assemblies (7) and (8).
Illustration 4 g06535618
Disconnect ground strap (9)
Illustration 5 g06588310
Typical Example.
Disconnect harness assemblies (10).
Illustration 6 g06535620
Remove the nut and disconnect cable assembly (11).