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Useful guide for mechanics especially prepared by TRW Commercial Steering Systems. Since this is a general Service Manual, the photographs and illustrations may not look exactly like the pump being serviced. The procedures, therefore , must be carefully read and understood before servicing. This services manual separate in several section. Section 1 General Information Introduction General Design & Operation Torque Chart Specification Numbers Part Number Breakdown Service Parts List Exploded View Oil Flow Illustration Approved Hydraulic Fluids. Section 2 Installation Installation Procedures Maintenance Tips. Section 3 Reseal & Repair Disassembly Preparation Disassembly Inspection Assembly Preparation/Assembly. Section 4 Reinstallation. Torque Chart. Bolts (4) 19 24 ft•lb (33 N•m) Relief valve seat assembly 3E 7 ft•lb (9 N•m) Plug 6 65 ft•lb (88 N•m) Pressure port (outlet) 37 ft•lb maximum (50 N•m) Suction port (inlet) 74 ft•lb maximum (100 N•m). The EV power steering pump TRW part number, serial number, and customer part number are stamped on a machined surface located on the bottom of the pump, opposite the input shaft. EV Series Exploded View. Oil Flow Illustration : Approved Hydraulic Fluids. Completely flush the steering system with one of the recommended fluids above only. Do not mix oil types. Any mixture or any unapproved oil could lead to seal deterioration and leaks. A leak could ultimately cause the loss of fluid, which could result in a loss of power steering assist. Install fittings to input and output ports, if fittings for this application can be preinstalled. Position either a gasket or o-ring, dependent on the application, which will seal the pump face to the mounting surface. Start the vehicle to purge the system and increase engine speed to prime the pump. Never high-pressure wash or steam clean a power steering pump while off the vehicle. Doing so could force contaminants inside the pump and cause it to malfunction. Regularly check the fluid and the fluid level in the power steering reservoir. Disassembly Preparation. Clean off all outside dirt from around fittings and hose connections before you remove the pump. Remove the pump from the vehicle and take it to a clean work surface. Clean and dry the pump before you start to disassemble it. As you disassemble the pump, clean all parts in clean, OSHA approved solvent, and air blow-dry them only.

Tags : torque chart, power steering pump, number breakdown, input shaft, output ports, ev series, specification numbers, machined surface, oil types, customer part number, hydraulic fluids, seat assembly, ft lb, oil flow, manual content

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