Power Steering Pump Ford Bronco II I

DESCRIPTION

C-II power steering pump is a belt driven, slipper-type integral pump with a fiber glass/nylon reservoir. Reservoir is attached to rear side of pump housing front plate. Pump body is encased within housing and reservoir.

Hoses are attached with quick disconnect fittings, located below filler neck at outboard side of reservoir. A pressure sensitive identification tag is attached to reservoir, indicating basic model number.

TROUBLE SHOOTING

Refer to TROUBLE SHOOTING - BASIC PROCEDURES article in the GENERAL TROUBLE SHOOTING section.

LUBRICATION & TESTING

See POWER STEERING GENERAL SERVICING article in the STEERING section.

Removal

1. Disconnect fluid return hose at reservoir. Drain fluid. Remove pressure hose from pump. Remove bolts from pump adjustment bracket. Loosen pump enough to remove drive belt.
2. Remove pump and adjustment bracket from support bracket. Using Pulley Remover (T69L-10300-B), remove pulley from pump. Remove adjustment bracket attaching bolts. Remove pump.

Installation

1. Install adjustment bracket on pump. Tighten bolts. Using Pulley Installer (T65P-3A733-C), install pulley on pump. Pulley must be flush within .010" (.25 mm) of end of pump shaft.
2. Place pump assembly on support bracket. Install and tighten adjustment bracket-to-support bracket bolts. Install and adjust belt on pulley. Tighten adjustment bracket bolts.
3. Install hoses to pump. Fill reservoir. Start engine. Turning wheel from stop-to-stop, bleed air from system. Recheck reservoir. Refill reservoir (if necessary).

Scheme 1

Scheme 2

1. With pump removed from vehicle and adjustment bracket and pulley removed from pump, remove outlet fitting, flow control valve, spring and reservoir.
2. Place a "C" clamp in vise. Install Lower Support Plate (T78P-3733-A1) over pump rotor shaft. Install Upper Compressor Plate (T78P-3733-A2) into "C" clamp. Place pump assembly into "C" clamp with rotor shaft facing down. DO NOT overtighten "C" clamp. (Scheme 1)
3. Tighten "C" clamp until slight bottoming of valve cover is felt. Insert small drift through hole in side of pump housing plate. Push inward on valve cover retaining ring. Remove retaining ring. Use screwdriver to pry out retaining ring. (Scheme 2) (Scheme 2): Removing Retaining Ring
4. Remove pump from clamp. Remove valve cover and "O" ring seal. Push on rotor shaft to remove. Remove upper plate, rotor and slippers. Remove cam insert and 2 dowel pins.
5. By tapping housing on flat surface, remove lower plate and Belleville spring. Remove "O" ring. Using a screwdriver, remove rotor shaft seal and seal retainer.

Scheme 3

1. Place rotor on rotor shaft splines, with large rotor counterbore facing upward. Install retaining ring in groove in end of rotor shaft. Place insert cam over rotor with recessed flat facing toward reservoir.
2. With rotor extended half way out of cam, insert spring into rotor spring pocket. Work it into the rotor cavity directly below recessed flat on cam. Use a slipper to compress spring. Install slipper with groove facing upward.
3. Hold cam stationary. Turn rotor either direction, one space at a time. Install another spring and slipper until all 10 rotor cavities have been filled. Be careful when turning rotor that springs and slippers do not fall out.
4. Using Seal Driver (T78P-3733-A3), install a new rotor shaft seal. Using a plastic mallet, drive seal and then seal retainer into bore until bottomed. Place pump housing plate on a flat surface with pulley side down.
5. Insert 2 dowel pins and disc spring into housing plate. Lubricate "O" ring seals with power steering fluid. Install seals on lower pressure plate.
6. Insert pressure plate with seals toward front of pump into pump housing plate and over dowel pins. Install Belleville spring with dished side up.
7. Place assembly into "C" clamp. Using Driver (T78P-3733-A3) in rotor shaft hole, press lower plate lightly until bottomed in pump plate housing. This will seat "O" ring. Install cam, rotor and slippers and rotor shaft assembly into pump housing plate over dowel pins. NOTE: When installing assembly, stepped holes must be used for dowel pins. Recessed notch in cam insert must face reservoir and be approximately 180 degrees opposite square pump mounting boss.
8. Place upper pressure plate over dowel pins. Side of plate with square recessed notch must face reservoir and be positioned 180 degrees opposite square pump mounting boss.
9. Place new "O" ring seal on valve cover. Lubricate with power steering fluid. Place valve cover over dowel pins. Ensure valve cover outlet fitting hole is in line with square mounting boss of pump housing plate.
10. Place entire assembly in "C" clamp. Compress valve cover into pump housing plate, until retaining ring groove is exposed in pump housing plate. NOTE: Ensure plastic baffle is securely in place in valve cover. If not, apply petroleum jelly to baffle. Install baffle.
11. Install valve cover retaining ring with ends near access hole in pump housing plate. Remove pump assembly from "C" clamp. Place new "O" ring seal on pump housing plate. Lubricate seal with power steering fluid. Install power steering reservoir.
12. Install flow control spring and flow control valve in valve cover. Place new "O" ring seals on outlet fitting. Lubricate seals with power steering fluid.
13. Install and tighten outlet fitting into valve cover. Install adjustment bracket on pump. Tighten bolts. Using Pulley Installer (T65P-3A733-C), install pulley.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

See also:
• TROUBLE SHOOTING - BASIC PROCEDURES
• POWER STEERING GENERAL SERVICING