GAGE-PLUG 8T3149 - Caterpillar

1. Drain the coolant to a level below elbow (1).2. Remove four bolts (2) and elbow (1). Remove gaskets from elbow. 3. Remove bolt (3) that holds fuel injection lines to regulator housing bonnet. Remove the three bolts (4) that hold water temperature regulator housing to engine. Remove water temperature regulator and housing (5) and gasket.Install Water Temperature Regulators And Housings
1. Install a new gasket (1) on regulator housing (2). Put the water temperature regulator and housing (2) in position on the engine. 2. Install new gaskets on water line and regulator housing. Install elbow (3) with the four bolts that hold it. Install bolt (4) that holds fuel injection lines to the regulator housing bonnet.3. Fill the cooling system with coolant to the correct level. See LUBRICATION AND MAINTENANCE GUIDE.Disassemble Water Temperature Regulators And Housings
start by:a) remove water temperature regulators and housings 1. Remove bolts (3) and make a separation between tube (1) and regulator housing (5). Remove gasket (2).2. Remove regulator (4) from the housing. 3. Remove seal (6) from the regulator housing with tool group (A).Assemble Water Temperature Regulators And Housings
1. Put a small amount of clean engine oil on the seal. Install the seal in the housing with tool group (A). Install the seal until it makes contact with the counterbore in the housing and with the lip of the seal away from the regulator. 2. Install regulator (4) in the housing.3. Install a new gasket (2) between regulator housing and tube (1). Install bolts (3) that hold tube and housing together.end by:a) install water temperature regulators and housings