1987 Citroen BX Hatchback Estate Service Repair Workshop Manual PDF

VEHICLE/EQUIPMENT INTRODUCTION:

The 1987 Citroen BX represented a mature stage of an already proven and highly successful platform. Over the preceding five years Citroen had refined the BX addressing initial quality concerns, expanding the engine lineup, and progressively introducing equipment upgrades that kept the model competitive in one of the most fiercely contested segments in the global automotive market. The BX remained unique in offering true hydropneumatic self leveling suspension at a price point accessible to mainstream buyers a combination that no Volkswagen, Ford, Opel, or Fiat could match.

For 1987 the most significant change across the BX range was the continued phasing in of the updated XU engine family with revised cylinder head porting for improved combustion efficiency, lower emissions, and marginally better fuel economy. The GTI variant with its 1.9 liter fuel injected engine had become a genuine enthusiasts car offering handling that belied the soft suspension reputation thanks to the inherent geometry control of the hydropneumatic system that eliminated body roll effects that plagued conventional spring suspended cars. The estate variant with its practical extended roofline and fold flat rear seats remained the go to choice for discerning families who refused to compromise on ride quality for utility.

SERVICE AND REPAIR SCOPE:

XU engine family service including the 1.4, 1.6, 1.9 naturally aspirated and the 1.9 liter fuel injected performance variant. Cylinder head gasket replacement procedure with the multi layer steel gasket orientation identification the gasket has specific notches and holes that must align with dowels in the block and head. Installing the gasket in wrong positions misaligns coolant passages and causes overheating within minutes of engine startup. Valve clearance adjustment on the XU SOHC engines using the feeler gauge method between the cam lobe base circle and the bucket tappet with the engine at ambient temperature cold setting specifications differ from hot specifications.

Engine removal and reinstallation methodology including the subframe lowering procedure that provides access to separate the engine from the transmission and front suspension without removing the complete subframe assembly saving significant labor time. Engine mount replacement procedure with the three mount configuration two lower hydraulic mounts and one upper torque reaction mount each requiring specific installation sequences to preload the rubber isolators correctly and prevent premature mount failure.

Hydropneumatic suspension system comprehensive service covering the complete hydraulic circuit from the engine driven pump through the filter to the pressure regulator and on to the distribution block feeding all corner spheres the brake accumulator and the parking brake apply cylinder. System pressure specification testing with gauge fitted to the test port confirming cut in pressure the point where the pump starts moving fluid is approximately 132 bar and cut out pressure the point where the regulator diverts pump flow back to reservoir is approximately 160 bar. Values outside these ranges require regulator overhaul or pump volumetric efficiency testing.

Hydraulic sphere identification chart documenting the specific sphere part number and volume for each position two front suspension spheres with larger volume for ride compliance, two rear suspension spheres with medium volume, one brake accumulator sphere with high pressure rating and larger volume for brake assist reserve, and the anti roll or anti pump sphere on certain variants. Each sphere is stamped with identification codes and the manual provides the cross reference table for correct replacement.

Brake system including the front inboard disc brake service where pad replacement requires removing the two caliper guide bolts from above the transmission with the wheel turned to full lock for access on the right side. The caliper pistons are hydraulically returned when new thicker pads are installed so no piston compression is required unlike conventional brake systems. The rear drum in disc parking brake shoe replacement includes the shoe to drum clearance setting using the feeler gauge through the inspection hole in the backing plate and the compensator bar equalizer adjustment that balances left to right parking brake force.

Transmission including the five speed MA manual gearbox clutch cable free play adjustment to 15 mm measured at the pedal with the specified finger pressure test method, the cable outer housing ferrule seating verification in the bulkhead grommet that if dislodged causes incomplete clutch release, and the speedometer drive pinion and driven gear inspection for stripped teeth on models with mechanical cable speedometer drive.

TECHNICAL SPECIFICATIONS:

Manufacturer: Citroen Automobiles SA
Engine: PSA XU series SOHC inline four cylinder
Displacement: 1360 cc XU5, 1580 cc XU7, 1905 cc XU9
Power output: approximately 62 to 125 horsepower depending on variant and tune
Transmission: 5 speed MA BE manual, 3 speed ZF automatic
Suspension: Hydropneumatic self level with LHM mineral hydraulic fluid
Operating pressure: approximately 145 to 160 bar normal range
Brakes: Front inboard disc hydraulic, rear drum in disc hydraulic parking brake
Dimensions: length approximately 4250 mm, width 1700 mm, height 1380 mm variable
Wheelbase: 2520 mm
Curb weight: approximately 990 to 1140 kg

DIAGNOSTIC INFORMATION:

Engine hesitation on acceleration with the fuel injected 1.9 XU engine is systematically diagnosed through the throttle position sensor TPS voltage sweep test rotating the throttle from closed to fully open while monitoring the sensor output voltage on a multimeter the voltage should increase smoothly without dropouts or flat spots indicating worn carbon track areas inside the sensor body. Fuel pressure test at the rail test port confirming pressure holds at approximately 2.5 bar with engine running and maintains residual pressure of at least 1.5 bar for several minutes after shutdown if pressure drops rapidly the fuel pump check valve or an injector leak is the culprit. MAP sensor manifold absolute pressure verification by comparing sensor voltage reading at idle against specified vacuum voltage table values.

Air conditioning refrigerant R12 original gas retrofit to R134a documentation including the compressor clutch air gap adjustment with shim pack selection, expansion valve replacement which requires complete system evacuation and component access through the engine bay side panel, and condenser fan operation relay testing that causes high side pressure spike and compressor cycling when fan fails to activate.

Steering rack excessive free play diagnosis includes the rack mount bolt torque check where loose rack housing bolts in the subframe create clunking noise that mimics internal rack wear, inner tie rod ball joint play assessment with the wheel raised and the tire grasped at three and nine oclock for shake movement, and the pinion bearing preload verification that requires steering gear removal for bench testing with a spring scale measuring the rotate force to turn the pinion through its full travel.

ILLUSTRATIONS AND DIAGRAMS INCLUDED:

Hydropneumatic system complete annotated schematic showing every circuit branch from the pump outlet through the filter housing to regulator inlet outlet pressure distribution to each sphere position with sphere identification codes brake circuit feed from accumulator through distributor valve to inboard calipers and rear drum parking brake actuation with return spring routing, XU engine series sectional view with timing belt routing cam locking tool engagement tensioner bolt direction and water pump mounting face, inboard front brake caliper cross section showing hydraulic piston feed from brake circuit pad wear sensor contact point and dust boot seal groove, rear drum in disc brake exploded view showing shoe hold down spring parking brake lever and cable compensator bar with adjustment slot detail, transmission MA series gearbox end view showing clutch release fork cable attachment point bearing guide tube spline engagement and selector rod interlock pin arrangement, and electrical wiring harness main route diagram showing engine bay fuse relay box with each circuit fuse amperage rating and protected component identification with wire color code legend.

COMPATIBILITY:

This manual covers the 1987 Citroen BX across all body configurations including the five door hatchback and estate/wagon variants. Content applies to the full range of XU engine variants from the 1.4 liter economy model through the 1.9 liter fuel injected GTI performance variant with both five speed manual and three speed automatic transmissions. All hydropneumatic system procedures apply to LHM equipped BX models 1983 through 1994 and the engine service data transfers to Peugeot models sharing the XU 1.4, 1.6, and 1.9 engine families including the 205, 309, 405, and later 406 platforms.

FILE PROPERTIES:

Format: Searchable PDF
Language: English
Delivery: Instant digital download
Access: Download anytime after purchase

1987 Citroen BX Hatchback Estate Service Repair Workshop Manual PDF

VEHICLE/EQUIPMENT INTRODUCTION:

The 1987 Citroen BX represented a mature stage of an already proven and highly successful platform. Over the preceding five years Citroen had refined the BX addressing initial quality concerns, expanding the engine lineup, and progressively introducing equipment upgrades that kept the model competitive in one of the most fiercely contested segments in the global automotive market. The BX remained unique in offering true hydropneumatic self leveling suspension at a price point accessible to mainstream buyers a combination that no Volkswagen, Ford, Opel, or Fiat could match.

For 1987 the most significant change across the BX range was the continued phasing in of the updated XU engine family with revised cylinder head porting for improved combustion efficiency, lower emissions, and marginally better fuel economy. The GTI variant with its 1.9 liter fuel injected engine had become a genuine enthusiasts car offering handling that belied the soft suspension reputation thanks to the inherent geometry control of the hydropneumatic system that eliminated body roll effects that plagued conventional spring suspended cars. The estate variant with its practical extended roofline and fold flat rear seats remained the go to choice for discerning families who refused to compromise on ride quality for utility.

SERVICE AND REPAIR SCOPE:

XU engine family service including the 1.4, 1.6, 1.9 naturally aspirated and the 1.9 liter fuel injected performance variant. Cylinder head gasket replacement procedure with the multi layer steel gasket orientation identification the gasket has specific notches and holes that must align with dowels in the block and head. Installing the gasket in wrong positions misaligns coolant passages and causes overheating within minutes of engine startup. Valve clearance adjustment on the XU SOHC engines using the feeler gauge method between the cam lobe base circle and the bucket tappet with the engine at ambient temperature cold setting specifications differ from hot specifications.

Engine removal and reinstallation methodology including the subframe lowering procedure that provides access to separate the engine from the transmission and front suspension without removing the complete subframe assembly saving significant labor time. Engine mount replacement procedure with the three mount configuration two lower hydraulic mounts and one upper torque reaction mount each requiring specific installation sequences to preload the rubber isolators correctly and prevent premature mount failure.

Hydropneumatic suspension system comprehensive service covering the complete hydraulic circuit from the engine driven pump through the filter to the pressure regulator and on to the distribution block feeding all corner spheres the brake accumulator and the parking brake apply cylinder. System pressure specification testing with gauge fitted to the test port confirming cut in pressure the point where the pump starts moving fluid is approximately 132 bar and cut out pressure the point where the regulator diverts pump flow back to reservoir is approximately 160 bar. Values outside these ranges require regulator overhaul or pump volumetric efficiency testing.

Hydraulic sphere identification chart documenting the specific sphere part number and volume for each position two front suspension spheres with larger volume for ride compliance, two rear suspension spheres with medium volume, one brake accumulator sphere with high pressure rating and larger volume for brake assist reserve, and the anti roll or anti pump sphere on certain variants. Each sphere is stamped with identification codes and the manual provides the cross reference table for correct replacement.

Brake system including the front inboard disc brake service where pad replacement requires removing the two caliper guide bolts from above the transmission with the wheel turned to full lock for access on the right side. The caliper pistons are hydraulically returned when new thicker pads are installed so no piston compression is required unlike conventional brake systems. The rear drum in disc parking brake shoe replacement includes the shoe to drum clearance setting using the feeler gauge through the inspection hole in the backing plate and the compensator bar equalizer adjustment that balances left to right parking brake force.

Transmission including the five speed MA manual gearbox clutch cable free play adjustment to 15 mm measured at the pedal with the specified finger pressure test method, the cable outer housing ferrule seating verification in the bulkhead grommet that if dislodged causes incomplete clutch release, and the speedometer drive pinion and driven gear inspection for stripped teeth on models with mechanical cable speedometer drive.

TECHNICAL SPECIFICATIONS:

Manufacturer: Citroen Automobiles SA
Engine: PSA XU series SOHC inline four cylinder
Displacement: 1360 cc XU5, 1580 cc XU7, 1905 cc XU9
Power output: approximately 62 to 125 horsepower depending on variant and tune
Transmission: 5 speed MA BE manual, 3 speed ZF automatic
Suspension: Hydropneumatic self level with LHM mineral hydraulic fluid
Operating pressure: approximately 145 to 160 bar normal range
Brakes: Front inboard disc hydraulic, rear drum in disc hydraulic parking brake
Dimensions: length approximately 4250 mm, width 1700 mm, height 1380 mm variable
Wheelbase: 2520 mm
Curb weight: approximately 990 to 1140 kg

DIAGNOSTIC INFORMATION:

Engine hesitation on acceleration with the fuel injected 1.9 XU engine is systematically diagnosed through the throttle position sensor TPS voltage sweep test rotating the throttle from closed to fully open while monitoring the sensor output voltage on a multimeter the voltage should increase smoothly without dropouts or flat spots indicating worn carbon track areas inside the sensor body. Fuel pressure test at the rail test port confirming pressure holds at approximately 2.5 bar with engine running and maintains residual pressure of at least 1.5 bar for several minutes after shutdown if pressure drops rapidly the fuel pump check valve or an injector leak is the culprit. MAP sensor manifold absolute pressure verification by comparing sensor voltage reading at idle against specified vacuum voltage table values.

Air conditioning refrigerant R12 original gas retrofit to R134a documentation including the compressor clutch air gap adjustment with shim pack selection, expansion valve replacement which requires complete system evacuation and component access through the engine bay side panel, and condenser fan operation relay testing that causes high side pressure spike and compressor cycling when fan fails to activate.

Steering rack excessive free play diagnosis includes the rack mount bolt torque check where loose rack housing bolts in the subframe create clunking noise that mimics internal rack wear, inner tie rod ball joint play assessment with the wheel raised and the tire grasped at three and nine oclock for shake movement, and the pinion bearing preload verification that requires steering gear removal for bench testing with a spring scale measuring the rotate force to turn the pinion through its full travel.

ILLUSTRATIONS AND DIAGRAMS INCLUDED:

Hydropneumatic system complete annotated schematic showing every circuit branch from the pump outlet through the filter housing to regulator inlet outlet pressure distribution to each sphere position with sphere identification codes brake circuit feed from accumulator through distributor valve to inboard calipers and rear drum parking brake actuation with return spring routing, XU engine series sectional view with timing belt routing cam locking tool engagement tensioner bolt direction and water pump mounting face, inboard front brake caliper cross section showing hydraulic piston feed from brake circuit pad wear sensor contact point and dust boot seal groove, rear drum in disc brake exploded view showing shoe hold down spring parking brake lever and cable compensator bar with adjustment slot detail, transmission MA series gearbox end view showing clutch release fork cable attachment point bearing guide tube spline engagement and selector rod interlock pin arrangement, and electrical wiring harness main route diagram showing engine bay fuse relay box with each circuit fuse amperage rating and protected component identification with wire color code legend.

COMPATIBILITY:

This manual covers the 1987 Citroen BX across all body configurations including the five door hatchback and estate/wagon variants. Content applies to the full range of XU engine variants from the 1.4 liter economy model through the 1.9 liter fuel injected GTI performance variant with both five speed manual and three speed automatic transmissions. All hydropneumatic system procedures apply to LHM equipped BX models 1983 through 1994 and the engine service data transfers to Peugeot models sharing the XU 1.4, 1.6, and 1.9 engine families including the 205, 309, 405, and later 406 platforms.

FILE PROPERTIES:

Format: Searchable PDF
Language: English
Delivery: Instant digital download
Access: Download anytime after purchase