850764A 4 Mercruiser GAUGE KIT, Primary Station

Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     138-7573     Link Bracket     2    Start By:
Remove the hood. Refer to Disassembly and Assembly, "Hood - Remove and Install".
Remove the fan. Refer to Disassembly and Assembly, "Fan - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
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, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Personal injury can result from contact with refrigerant.This system is under pressure at all times, even if the engine is not running. Heat should never be applied to a charged system.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 caution when a fitting is removed. Slowly loosen the fitting. If the system is still under pressure, evacuate the system recovering the refrigerant before removing the fitting.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.Before any checks of the air conditioning and heating system are made, move the machine to a smooth horizontal surface. Lower all implements to the ground. Make sure the transmission is in neutral or park and that the parking brake is engaged. Keep all other personnel away from the machine or where they can be seen.
Note: Put identification marks on all hoses, on all hose assemblies, and on all harness assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.
Recover the air conditioner refrigerant from the air conditioner system. Refer to Service Manual, SENR5664, "Air Conditioning and Heating Systems with R-134a Refrigerant" for the correct procedure. Refer to Special Publication, NENG2500, "Air Conditioning Tools" for the correct tools.
Drain the hydraulic system into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Capacities - Refill" for the capacity of the hydraulic tank. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change".
Drain the coolant from the cooling system into a suitable container for storage or for disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant (DEAC) - Change" or Operation and Maintenance Manual, "Cooling System Extended Life Coolant - Change" for the proper procedure.
Illustration 1 g01113973
Disconnect lower radiator hose (1) .
Illustration 2 g01524098
Loosen clamp (2) and disconnect hose (3) .
Illustration 3 g01524104
Remove bolts (4). Remove mounts (6) and grill (5) .
Illustration 4 g01524111
Remove bolts (7) .
Illustration 5 g01524124
Illustration 6 g01524133
Loosen clamp (8) and remove hose (9) .
Remove bracket (10) and bracket (17) .
Remove bolt (16) and bolt (21) .
Remove guard assembly (20) .
Disconnect clips (19) and disconnect hoses (18) .
Disconnect harness assembly (15) and the attaching hardware.
Disconnect hose assemblies (12) .
Disconnect clips (11) .
Loosen clamps (13) and disconnect hoses (14) .
Illustration 7