TM9-2320-361-34 3-13. OIL PRESSURE REGULATOR HOUSING MAINTENANCE (Contd) 4 I e. Installation ● Perform step 1 for vehicles equipped with engine models LDT-465-1C and LDT-465-1D. ● Perform steps 2 and 3 for vehicles equipped with engine models LD-465-1 and LD-465-1C. 1. Install new gasket (13) and oil pressure regulator valve housing (1) on engine (12) with four new lockwashers (11) and screws (10). 2. Install new gasket (13) and oil pressure regulator valve housing (1) on engine (12) with three new lockwashers (11) and screws (10). 3. Install new lockwasher (11) and screw (10) to bracket (14) and engine (12). LDT-465-1C and LDT-465-1D MODEI.5 LD-465-1 and LD-465-1C MODEL5 3-45