8M0049872 Mercury GEAR HOUSING ASSEMBLY, Complete (XX-Long)(1.75:1)

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.
Introduction
Use following procedures to check the cooling system.Required Tools
Table 1
Required Tools
Item Qty Part Number Part Name
T1 1 9S-8140 Pressurizing Pump
T1a 1 2P-2329 Adapter As
T1b 1 2P-2331 Release Valve
T1c 1 3R-3810 Hose As
T2 N/A Pressure Gp(1)
T2a 1 4C-7090 Valve
T2b 1 4C-7121 Nipple
T2c 1 4C-7158 Fitting
T2d 1 4C-8852 Regulator
T2e 1 4M-5317 Reducer Bushing
(1) Tooling (T5) consist of individual piece parts (T5a) through (T5e).Pressure Pump
Illustration 1 g00286371
Typical pressure relief valve system
(1) Pressure relief valve
(2) Stud for filler cap
Illustration 2 g06441451
Tooling T1 Pressurizing Pump
(T1a) Release valve
(T1b) Adapter assembly
(T1c) HoseTest Preparation
After the engine is cool, loosen the filler cap slowly and allow pressure out of the cooling system. Then remove the filler cap from the radiator.
Inspect the filler cap carefully. Look for damage to the seal or to the surface that seals. Any foreign material or deposits on the cap must be removed. Any foreign material or deposits on the seal must be removed. Any foreign material or deposits on the surface that seals must be removed.
Make sure that the coolant level is above the top of the radiator core.
Install the filler cap. Tighten the filler cap.
Remove hose (T1c) from adapter (T1a).
Remove the pressure test plug for the radiator top tank.
Illustration 3 g00286375
Install the end of the hose (T1c) in the hole for the pressure test plug.Test Procedure
Operate the pump until the pointer on the pressure indicator does not increase. The highest pressure indication on the pressure indicator is the point that opens the relief valve. The open pressure is approximately 124 kPa (18 psi).
If the relief valve does not open within the pressure specification, replacement of the relief valve is necessary.
If the relief valve is within specifications, check the radiator for outside leakage.
Inspect the radiator, all connection points, and the hoses for leaks.If no leaks are found and the gauge reading remains steady for a minimum of 5 minutes, the cooling system is not leaking.If leaking is observed and/or the gauge reading decreases, make repairs, as needed.
Remove hose (T1c) from the pressure test location on the radiator.
Install the plug in the pressure test location.Shop Air
Test Preparation
After the engine is cool, loosen the filler cap slowly and allow pressure out of the cooling system. Then remove the filler cap from the radiator.
Inspect the filler cap carefully. Look for damage to the seal or to the surface that seals. Any foreign material or deposits on the cap must be removed. Any foreign material or deposits on the seal must be removed. Any foreign material or deposits on the surface that seals must be removed.
Make sure that the coolant level is above the top of the radiator core.
Install the filler cap. Tighten the filler cap.
Assembly Tooling (T2) using valve (T2a), nipple (T2b), fitting (T2c), regulator (T2d), and reducer bushing (T2e).
Remove hose (T1c) from adapter (T1a).
Remove the pressure test plug for the radiator top tank.
Install the end of the hose (T1c) in the hole for the pressure test plug.Test Procedure
Increase the pressure reading on the gauge to 124 kPa (18 psi).
Shut off valve (T2a).
If the relief valve does not open within the pressure specification, replacement of the relief valve is necessary.
If the relief valve is within specifications, check the radiator for outside leakage.
Inspect the radiator, all connection points, and the hoses for l