1992 BMW 735IL A/C & Heater Service (ONLINE REPAIR MANUALS)

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A/C & HEATER SERVICE PROCEDURES FOR 1992 BMW 735IL AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1992 BMW 735IL cars and light trucks from 1990+

A/C & Cooling System Maintenance -> BMW
Vehicle: 1992 BMW 735IL 3.5 L6 GAS

Inspection Interval Is Determined By Service Inspection Indicator.

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A/C & HEATER SERVICE PROCEDURES FOR 1992 BMW 735IL AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1992 BMW 735IL cars and light trucks from 1990+

Computer Relearn Procedures -> BMW
Vehicle: 1992 BMW 735IL 3.5 L6 GAS

Disconnect or replace DME control unit only when ignition switch is off. After renewed operation, neutral basic values are set in the control unit for idle and emission control. An...

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A/C & HEATER SERVICE PROCEDURES FOR 1992 BMW 735IL AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1992 BMW 735IL cars and light trucks from 1990+

BMW -> Component Replacement & Adjustment -> HEATER CORE, REPLACE -> 318 & 325 -> 525 & 535
Vehicle: 1992 BMW 735IL 3.5 L6 GAS

318 & 325

  • Disable air bag system as described under .
  • Drain cooling system, then remove cowl panel grille screen and electric wire duct.
  • Loosen mounting bolts, then remove air collection box. Air collection box may be difficult to remove.
  • Remove water flange and blow air into feed hose to prevent residual coolant in heater core from leaking on interior carpeting.
  • Remove lower instrument panel securing nuts.
  • Pry out lower trim panel, then remove heater core double pipe.
  • Remove securing screw, then remove heater core.
  • Rever...

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A/C & HEATER SERVICE PROCEDURES FOR 1992 BMW 735IL AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1992 BMW 735IL cars and light trucks from 1990+

Import Compressor Service -> Bosch Compressors -> COMPRESSOR CLUTCH SERVICE -> CLUTCH ASSEMBLY, REPLACE -> Except Porsche 928 -> Porsche 928
Vehicle: 1992 BMW 735IL 3.5 L6 GAS

CLUTCH ASSEMBLY, REPLACE

Porsche 928
  • Use a suitable spanner wrench to hold clutch hub and remove retaining nut.
  • Remove clutch plate using a suitable puller, then press out ball bearing.
  • Reverse procedure to install. Measure endplay between clutch plate and pulley. Endplay should be .016-.040 inch. Add or remove shims as necessary to bring within specifications.
Except Porsche 928
  • Discharge...

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A/C & HEATER SERVICE PROCEDURES FOR 1992 BMW 735IL AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1992 BMW 735IL cars and light trucks from 1990+

Import Compressor Service -> Bosch Compressors -> SHAFT SEAL, REPLACE -> EXCEPT PORSCHE 928
Vehicle: 1992 BMW 735IL 3.5 L6 GAS

EXCEPT PORSCHE 928

  • Remove compressor clutch plate as previously described, then remove the key and circlip.
  • Remove thrust washer using tool No. 64 5 030, or equivalent.
  • Install tool No. 64 5 040, or equivalent, into compressor. Rotate tool clockwise to free seal, then remove tool.
  • Remove seal using a plastic needle.
  • Reverse pr...

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A/C & HEATER SERVICE PROCEDURES FOR 1992 BMW 735IL AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1992 BMW 735IL cars and light trucks from 1990+

BMW -> Manual Air Conditioning & Heater System Diagnosis & Testing -> A/C COMPONENT DIAGNOSIS & TESTING -> 318is -> A/C COMPRESSOR -> BLOWER MOTOR -> Evaporator Regulation -> Heater Regulation -> TEMPERATURE REGULATOR TEST -> THERMOSTATIC SWITCH TEST
Vehicle: 1992 BMW 735IL 3.5 L6 GAS

THERMOSTATIC SWITCH TEST

  • Remove A/C temperature switch as outlined in .
  • Rotate switch to fully cold position and connect an ohmmeter to switch terminals. Meter should show continuity.
  • Prepare solution of water, crushed ice, and sufficient amount of salt to reduce solution to below 20°F.
  • Immerse temperature sensor of switch in ice bath while observing ohmmeter. Be careful not to get salt or water into control portion of switch.
  • Ohmmeter should show no continuity while sensor is in ice bath.
  • Remove sensor from ice bath a...

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