hvac

AC Compressor

for 2017 Maserati Levante 3.0L V6 Twin Turbo · RWD

Editorial review:Chris Hackleman — Master Technician · 20+ years · Jeff Moore — Master Lexus & Toyota Mechanic · 20+ years

Difficulty

Advanced

Time

4.5 h

Tools

Steps

✓Expert-verified. Personally reviewed and approved by OLP's master technicians (Chris Hackleman & Jeff Moore — 20+ years each). Always follow the vehicle's factory service information and torque specs.

Complete removal and replacement of the AC compressor on a 2017 Maserati Levante 3.0L V6 Twin Turbo, including refrigerant recovery, component replacement, and system recharge.

Warnings

⚠️AC refrigerant must be recovered by a certified technician using approved equipment. Venting refrigerant to atmosphere is illegal and environmentally harmful.

⚠️Refrigerant oil under pressure can cause serious eye injury. Wear safety glasses and ensure system is fully depressurized before opening lines.

⚠This vehicle uses R134a refrigerant. Do not mix with other refrigerant types or use contaminated recovery equipment.

⚠PAG oil is hygroscopic and absorbs moisture rapidly. Keep oil containers sealed until immediately before use.

ℹ️Compressor failure often causes metal debris in the system. Inspect condenser and lines for contamination; flush or replace components as needed.

Tools required

AC recovery/evacuation/recharge machineEssential

Torque wrench (5-30 Nm)Essential

Socket set (metric)Essential

Crow's foot wrench set

Vehicle lift or jack standsEssential

Oil drain panEssential

Line disconnect tool setEssential

Digital multimeter

Serpentine belt tensioner toolEssential

PAG oil measurement syringeEssential

Parts

AC Compressor assembly with clutch × 1 — Use OEM specification
AC line O-rings × 1 — High-side and low-side O-ring kit
PAG 46 compressor oil × 1 — Use Maserati approved PAG 46
Serpentine drive belt × 1 — Replace if worn or contaminated
R134a refrigerant × 1 — System capacity approximately 1.65 lbs

Preparation

Park vehicle on level surface and engage parking brake
Ensure engine is cold before beginning work
Disconnect negative battery terminal and wait 5 minutes for system capacitor discharge
Remove engine cover by releasing quick-release fasteners
Raise vehicle on lift to working height for underside access
Document amount of oil drained from old compressor to determine proper replacement quantity

Procedure

1
Recover AC refrigerant
Connect AC recovery machine to service ports on high and low pressure lines. Follow machine instructions to completely recover all refrigerant from the system. Verify system is at 0 PSI before proceeding. Record the amount of refrigerant recovered for recharge reference.
2
Remove serpentine belt
From above engine bay, locate serpentine belt tensioner on right side of engine. Use tensioner tool to rotate tensioner clockwise and release belt tension. Remove belt from all pulleys including compressor pulley. Inspect belt for oil contamination or damage; replace if necessary.
3
Disconnect compressor electrical connector
Locate the compressor clutch electrical connector on the front of the compressor. Press release tab and disconnect connector. Remove connector retaining bolt if equipped and secure wiring harness away from work area.
Torque spec
Clutch Connector Bolt8 Nm (6 lb-ft)
4
Disconnect AC lines from compressor
Working from underneath vehicle, locate high-pressure and low-pressure line fittings at rear of compressor. Place drain pan underneath to catch residual oil. Using appropriate wrench, loosen and remove both line fittings from compressor. Immediately cap open ports on lines and compressor to prevent contamination and moisture entry. Remove and discard old O-rings from line fittings.
5
Remove compressor mounting bolts
Locate three compressor mounting bolts securing compressor to engine block and mounting bracket. The compressor is mounted low on the right side of the engine. Remove all mounting bolts while supporting the compressor weight. Carefully maneuver compressor out from mounting position, clearing hoses and wiring.
Torque spec
AC Compressor Mounting Bolts25 Nm (18 lb-ft)
6
Drain and measure oil from old compressor
Drain all oil from old compressor into measuring container by rotating compressor and pouring from inlet and outlet ports. Measure and record quantity. Inspect oil for metal particles or discoloration indicating internal failure. If metal contamination is present, system flush and receiver-drier replacement are required.
7
Prepare new compressor
Remove shipping plugs from new compressor ports. Drain shipping oil from new compressor completely. Add fresh PAG 46 oil matching the quantity drained from old compressor (typically 90-120ml). If old compressor was empty or contained less than 60ml, add 90ml to new compressor. Rotate compressor pulley 10 times by hand to distribute oil internally.
8
Install new compressor
Position new compressor into mounting location, ensuring proper alignment with mounting bracket and engine block. Thread in all three mounting bolts by hand first to ensure proper thread engagement. Tighten mounting bolts in star pattern to specified torque.
Torque spec
AC Compressor Mounting Bolts25 Nm (18 lb-ft)
9
Install new O-rings and reconnect AC lines
Lubricate new O-rings with fresh PAG 46 oil and install on both high-pressure and low-pressure line fittings. Verify O-rings are seated properly in grooves. Connect both AC lines to compressor and hand-tighten fittings. Torque both fittings to specification using appropriate crow's foot wrench if needed for access.
Torque spec
AC Line Fittings20 Nm (15 lb-ft)
10
Reconnect electrical connector and install belt
Reconnect compressor clutch electrical connector until it clicks into place. Secure connector retaining bolt if equipped. Route serpentine belt onto all pulleys according to belt routing diagram on fan shroud. Use tensioner tool to rotate tensioner and slip belt onto tensioner pulley last. Verify belt is properly seated on all pulley grooves.
11
Evacuate and recharge AC system
Reconnect battery negative terminal. Connect AC machine to service ports. Evacuate system to deep vacuum (minimum 29 inches Hg) for at least 45 minutes to remove all moisture and air. System should hold vacuum for 15 minutes without loss. If vacuum holds, recharge system with R134a refrigerant to specification (approximately 1.65 lbs or 750g). Add UV dye if desired for future leak detection.
12
Test system operation
Start engine and allow to idle. Turn AC system to maximum cooling with blower on high. Verify compressor clutch engages within 30 seconds. Monitor high-side pressure (should reach 180-250 PSI depending on ambient temperature) and low-side pressure (should be 25-45 PSI). Check for abnormal noises from compressor. Verify cold air from vents (typically 40-50°F at vents with 80°F ambient).

Reassembly

Install engine cover and secure all quick-release fasteners
Lower vehicle from lift
Clear any diagnostic trouble codes stored during battery disconnect using scan tool if available

Verification

Verify AC system pressures are within normal range: low side 25-45 PSI, high side 180-250 PSI at idle with AC on maximum
Confirm compressor clutch engages and disengages properly when AC is cycled on and off
Check all AC line connections for leaks using electronic leak detector or soap solution
Verify vent temperature is 40-50°F colder than ambient temperature
Listen for unusual compressor noises indicating bearing failure or insufficient lubrication
Inspect serpentine belt tracking on all pulleys for proper alignment
Confirm no warning lights or AC-related fault codes are present

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