A/c Compressor Servicing Dodge Ram I

CHRYSLER C-171 6-CYLINDER

Note. For 6C-17 compressor, see NIPPONDENSO (CHRYSLER) 6C-17 6-CYLINDER compressor servicing in this section.

Removal

1. Disconnect battery negative cable. Loosen and remove belt. Disconnect A/C compressor electrical connector. With refrigerant lines attached, remove compressor mounting bolts and position compressor for service.
2. Using a 13 mm socket and Clutch Spanner (C-4563), remove compressor shaft nut and washer. Screw Clutch Puller (C-4771) into clutch plate. Tighten center screw in puller and remove clutch plate. (Scheme 1)
3. Using snap ring pliers, remove pulley retaining snap ring and slide pulley off compressor neck. Remove snap ring and remove clutch coil assembly. Inspect hub and pulley clutch surfaces. Replace if scoring is excessive.

Note. Clutch hub and pulley must be replaced as a set. Clutch slipping will result if only one piece is replaced.

Installation

1. Align hole in back of clutch coil with pin in compressor housing. Ensure clutch coil electrical wiring is properly routed. To complete installation, reverse removal procedure.
2. Tighten compressor shaft nut to 13 ft. lbs. (17.5 N.m). Using a feeler gauge, check hub-to-pulley clutch clearance. Proper clearance is .020-.035" (.05-.9 mm). If clearance is not right, add or remove shims behind clutch hub as necessary. Install compressor and tighten compressor mounting bolts to 40 ft. lbs. (54 N.m).

Removal & Installation

1. Discharge A/C system using approved refrigerant recovery/recycling equipment. Disconnect refrigerant lines and electrical wiring at compressor. Remove compressor. Remove suction port and drain oil. Remove compressor clutch assembly. (Scheme 1)
2. Using side-cut pliers, remove compressor crankshaft key. Using a 6 mm Allen wrench, remove 6 compressor through bolts. Using a plastic hammer, tap on outside of front cover and remove. Remove "O" ring seal from front cover and discard.
3. Remove felt packing from nose of front cover. Place compressor front cover on a flat surface with nose up. Using a plastic hammer and drift, tap out front seal. Remove front cartridge seal from compressor crankshaft.
4. Install seal cartridge on crankshaft. Using a socket, tap new front seal in front cover. Install compressor front and rear covers. Tighten 6 through bolts to 22 ft. lbs. (29 N.m).
5. To complete installation, reverse removal procedure. Use new "O" rings. Verify proper refrigerant oil level. See R-12 & REFRIGERANT OIL SPECIFICATIONS table in this section. Evacuate and recharge system. Perform leak test.

Exploded View of C-171 6-Cylinder Compressor. Scheme 1

NIPPONDENSO (CHRYSLER)

6C-17 6-CYLINDER

1. Disconnect battery negative cable. Loosen and remove belt. Disconnect A/C compressor electrical connector. With refrigerant lines attached, remove compressor mounting bolts and position compressor for service.
2. Using Clutch Hub Holder (6355), remove compressor shaft nut. Using Clutch Hub Puller (6354), remove hub and hub clearance shims.
3. Using snap ring pliers, remove pulley retaining snap ring and slide pulley off compressor neck. Remove snap ring and remove clutch coil assembly. Inspect hub and pulley clutch surfaces. Replace if scoring is excessive.

1. Align hole in back of clutch coil with pin in compressor housing. Ensure clutch coil electrical wiring is properly routed. To complete installation, reverse removal procedure.
2. Tighten compressor shaft nut to 13 ft. lbs. (17.5 N.m). Using a feeler gauge, check hub-to-pulley clutch clearance. Proper clearance is .035" (.9 mm). If clearance is not right, add or remove shims behind clutch hub as necessary. Install compressor and tighten compressor mounting bolts to 40 ft. lbs. (54 N.m).

SHAFT SEAL

Note. Shaft seal replacement information for 6C-17 compressor not supplied by manufacturer.