remove heater box in 1999 blazer
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Filed Under (Ford) by admin on 06-03-2011
1. Disconnect battery ground cable (14301) . 2. Remove two console armrest mounting access covers (047A62) at rear of console panel (045A36) (snaps out) to gain access to armrest retaining bolts. 3. Remove four armrest-to-floor bracket retaining bolts and remove armrest assembly (snaps out of console). 4. Remove console panel gear shift plate (044G24) (snaps out). On vehicles equipped with manual transmissions, shift boot is attached to bottom of finish panel. Remove shift knob and slide boot and console panel gear shift plate up shift lever to remove. 5. To remove top finish panel position emergency brake lever in the UP position. Remove four retaining screws and lift top finish panel up. Disconnect necessary wire connectors. 6. Remove two console-to-rear floor bracket retaining screws. 7. Insert a small screwdriver into two notches at bottom of front upper finish panel and snap out. 8. If the vehicle has a radio chassis (18806) , the radio chassis must be removed. Refer to Section 15-01. If the vehicle doesn’t have a radio chassis , use a small screwdriver and pry radio cover finish panel out of console. 9. Flex glove compartment bin tabs inward. Drop down glove compartment (06010) assembly. Remove two console-to-instrument panel retaining screws. 10. Remove four console bracket retaining screws. Remove console panel from vehicle. 11. Remove three bolts retaining steering column opening cover (3A673) and reinforcement panel. Remove cover. 12. Remove steering column opening reinforcement by removing two bolts. 13. Remove two bolts retaining steering column opening reinforcement and remove reinforcement. 14. Remove six steering column retaining nuts (two retaining the hood release mechanism and four retaining column to lower brake pedal support). Lower steering column to floor. 15. Remove upper and lower steering column shrouds (3530) and disconnect wiring from turn signal and windshield wiper switch (13K359) . 16. Remove steering column through bolt and nut on engine compartment side of cowl panel. Remove steering column from vehicle. 17. Remove brake pedal support nut. 18. Snap out instrument panel defroster opening grille (044E82) . 19. Remove screws from speaker covers. Snap out speaker covers. 20. Remove front screws retaining RH and LH scuff plates at cowl side trim panels. 21. Remove RH and LH cowl side trim panels. 22. Disconnect wiring at RH cowl side. 23. Remove cowl side retaining bolts (one each side). 24. Remove five cowl top screws attachments. 25. Gently pull instrument panel (04320) away from RH side of cowl panel. Disconnect speedometer cable, air conditioning controls and wire connectors. 26. Place a drain pan or suitable container under the heater water hose connections at the cowl panel. 27. Disconnect heater water hoses (18472) from heater core tubes and plug heater water hoses with suitable 5/8-inch and 3/4-inch plugs. Cap heater core tubes to prevent coolant loss from heater core (18476) during removal of heater case. 28. Remove screw retaining A/C evaporator case support bracket (19A639) to cowl top panel. 29. Disconnect vacuum supply supply hose (black) from A/C vacuum supply in engine compartment. 30. Working under the hood (16612) , remove nut retaining heater case to cowl panel. 31. Inside passenger compartment, remove screw retaining A/C evaporator case mounting bracket (19A865) to cowl top panel. 32. Remove one screw retaining A/C evaporator case mounting bracket below heater case to cowl panel. 33. Carefully pull heater case from cowl panel and remove heater case assembly from vehicle. 34. To install, reverse Removal procedure. Check operation of all components. 35. After repairs have been completed, check the coolant level in the radiator (8005) and in the radiator coolant recovery reservoir (8A080) . Fill as required with the recommended coolant mixture.
Filed Under (Mitsubishi) by admin on 30-12-2010
Disassembly (Ram-50) 1) Remove both 4WD indicator switches and steel balls. Remove speedometer gear assembly. Remove output shaft cover, gasket, wave spring and spacer. See Fig. 3. Remove rear cover, rear cover gasket and spacer from chain cover. Drive roll pin out of high-low shift fork. 2) Remove 2 seal plugs. Remove 2 poppet springs and steel balls. Shift transfer case to “4WD” and pull high-low shift rail out, in rear cover direction. Remove interlock plunger. Remove pulse generator (if equipped), front output shaft cover and pulse rotor (if equipped). Remove snap ring from rear bearing on output shaft. Remove chain cover, oil guide and side cover. Remove countershaft locking plate. Remove countershaft. 3) Remove countergear, 2 thrust washers, 2 needle bearings and spacer through side cover opening. Remove snap ring, spring retainers and spring from 2WD-4WD shift rail. Remove front output shaft, rear output shaft and chain as assembly. 4) Remove 2WD-4WD shift fork and distance piece. Drive out 2WD-4WD shift rail spring pin. Remove 2WD-4WD shift rail and lug. Remove high-low shift fork and high-low synchronizer sleeve. Remove needle bearing and snap ring from input gear. Remove input gear assembly. 5) If either control shaft or input gear oil seals are to be replaced, drive out roll pin from transmission control change shifter. Separate transfer case from adapter. See Fig. 3. Disassembly (Montero) 1) Remove dynamic damper, 5 detection switches and 3 steel balls. Remove poppet plug, spring and steel ball. Remove speedometer gear assembly. Remove output shaft rear cover, spacers, dust seal guard and oil seals. Front output shaft cover, wave spring and spacer (if equipped). 2) Remove high-low shift rail plug and high-low shift fork spring pin. Shift transfer case to “4WD”. Remove rear cover and high- low shift rail. Remove interlock plunger. Remove rear output shaft (viscous coupling) assembly and center differential assembly. Remove 2WD-4WD synchronizer assembly, chain and front output shaft from transmission as a unit. With White paint make match marks in grooves of 2WD-4WD synchronizer in 3 places. With White paint make match marks on spline projections of 2WD-4WD synchronizer sleeve in 3 places. Refer to match marks during reassembly. 3) Remove snap ring, spring seat, spring, 2WD-4WD shift fork and 2WD-4WD synchronizer sleeve. Remove differential lock hub, oil dam cover and bearing retainer. Remove side cover and gasket. Remove transfer counter gear shaft, transfer counter gear, thrust washer, needle bearings and spacer. Remove transfer drive shaft assembly. Remove high-low shift fork assembly and clutch sleeve. Remove transfer input gear assembly. 4) Remove 2WD-4WD shift lug spring pin, spring, spring retainer 2WD-4WD shift lug and shift rail. Remove input gear oil seal, baffle plate, dust seal guard and front output shaft oil seal. See Fig. 4.
Filed Under (Pontiac) by admin on 15-04-2011
Tools Required J 38185 Hose Clamp Pliers Removal Procedure 1. Remove the fuel injector sight shield (3.8L only). Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical-3.8L. 2. Drain the coolant. Refer to Cooling System Draining and Filling in Engine Cooling. 3. UseJ 38185 in order to position aside the heater hose inlet and outlet clamps at the heater core. 4. Disconnect the inlet and outlet heater hose from the heater core. 5. Remove the vacuum tank. Refer to Vacuum Tank Replacement in HVAC System – Manual. 6. Remove the floor carpet. Refer to Front Floor Panel Carpet Replacement in Interior Trim. 7. Remove the rear floor air outlet duct from the holes in the floor reinforcement. 8. Disconnect the rear floor air outlet duct from the heater core outlet cover. 9. Remove the bolts from the vaccum harness bracket and position bracket aside. Important: Position the heater core outlet cover downward and rearward in order to disconnect the cover from the rear area floor duct assembly. 10. Remove the heater core outlet cover screws. 11. Remove the heater core outlet cover. 12. Remove the heater core cover screws. 13. Remove the heater core cover. 14. Remove and discard the seals (1,2) from the heater core cover. 15. Remove the caulk (3) from the heater core cover. 16. Remove and discard the heater core outer seal (5) from the heater core. 17. Remove the heater core clamp screw (1). 18. Remove the heater core retaining clamp. 19. Remove the heater core pipe retainer clamp screw (2). 20. Remove the heater core from the HVAC lower case. 21. Remove the heater core pipe retainer clamp from the heater core pipes. 22. Remove and discard the heater core lower seal (4) from the HVAC case. 23. Remove and discard the heater core center seal (3) from the HVAC case. 24. Remove and discard the heater core upper seal (2) from the HVAC lower case. 25. Remove and discard the heater core side seals (1) from the HVAC lower case. Installation Procedure
Filed Under (Toyota) by admin on 19-05-2011
Some customers may experience decreased air volume from the HVAC vents when the temperature is set to maximum heat. Use the following repair procedure to address the customer concerns. Production Change Information This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown below. MODEL Tacoma DRIVETRAIN All 2WD 4WD PLANT NUMMI TMMBC PRODUCTION CHANGE EFFECTIVE VIN 5TE###2N#9Z593323 3TM#U#2N#9M070971 3TM#U#2N#9M007845 Repair Procedure 1. Remove the Air Conditioning unit. Refer to the Technical Information System (TIS), model year repair manual: • 2007 / 2008 Tacoma Vehicle Interior – Heating/Air Conditioning – “Air Conditioning Unit: Removal” 2. Remove the 4 bolts and the lower defrost nozzle assembly. 3. Remove the 2 bolts and the heater to register duct. 4. Remove the No. 1 air duct. A. Remove the bolt. B. Disengage the 3 claws and remove the air duct. 5. Remove the air inlet assembly. A. Remove the air ?lter. B. Remove the 4 bolts and 1 clip that mount the air inlet assembly. C. Remove the cooler thermistor clip from the air inlet case. Figure 5. 6. Remove the mode damper control assembly. A. Remove the 3 bolts on the mode mounting plate. B. Remove the mode damper control assembly including mode cam, mode mounting plate, and mode control servo. 7. Remove the temperature damper control assembly. A. Remove the 3 bolts on the temperature control mounting plate. B. Remove the temperature damper control assembly including temperature control cam, mounting plate, and servo. Figure 9. 8. Remove the bolt and the heater pivot. 9. Remove the mode case. A. Remove the 11 bolts and 1 clip that mount the mode case. Figure 12. 10. Remove the evaporator core. Figure 13. 11. Remove the top half of the HVAC main case. A. Remove the torx bolt and heater pipe clamp. B. Remove the 2 clips and 15 bolts that mount the top half of the case. Figure 14. 12. Disengage and remove the heater air damper door from the HVAC main case. Figure 16.
Filed Under (Lincoln) by admin on 07-03-2011
1. Remove the heater air plenum chamber (18471) assembly as outlined. 2. Remove the four retaining screws from the heater core cover (18B300) and remove the heater core cover from the heater air plenum chamber assembly. Heater Core Removal 3. Pull the heater core (18476) assembly from the heater air plenum chamber assembly. Installation 1. Carefully install heater core assembly into the heater air plenum chamber assembly. Visually check to ensure that heater core case seal (18658) is properly positioned. 2. Position the heater core cover and install the four retaining screws. 3. Install the heater air plenum chamber assembly as outlined. Heater Air Plenum Chamber Removal 1. Disconnect battery ground cable (14301). Refer to Section 14-01. 2. Disconnect the heater water hoses (18472) from the heater core tubes. Plug the ends of the heater water hoses to prevent coolant loss. 3. Plug heater core tubes securely to prevent coolant leakage from heater core (18476) during heater air plenum chamber removal. 4. Remove three nuts located below the windshield wiper motor (17508) retaining the LH end of the heater air plenum chamber (18471) to the dash panel (01610). 5. Remove one nut retaining the upper LH corner of the A/C evaporator core housing (19A559) to the dash panel. 6. Remove LH and RH lower instrument panel insulators. 7. Disconnect two vacuum supply hoses from vacuum source. Push grommet and vacuum supply hose into passenger compartment. 8. Remove all instrument panel retaining screws and pull the instrument panel (04320) back as far as possible without disconnecting any wire harnesses. 9. Loosen the RH door sill plate and remove the RH side cowl trim panel. 10. Remove cross body brace and disconnect wiring harness from A/C electronic door actuator motor (19E616) and disconnect the sensor tube from the evaporator case connector. 11. Disconnect the vacuum jumper harness at the multiple vacuum connector near the heater outlet floor duct (18C433). 12. Disconnect the white vacuum hose from the heater and A/C air inlet duct door vacuum