The objective is to replace the AC clutch on the car. Remove the AC compressor's front and rear bolts only. Lift the front of the compressor up to clear the top radiator support. Maintain the compressor in that position by placing a block of wood between the front of the compressor and the top of the engine. Cinch 1 2 1 – simple mouse driven window management. Loosen the mounting bolts with the box-end wrenches, and remove the bolts from the compressor clutch mounting bracket and lift the clutch out of the vehicle. Step 7 Pour out the refrigerant oil into a graduated container so you know how much new oil to add to the new compressor. Sep 22, 2008. The A/C compressor clutch in a Chevrolet Tahoe is an electromagnetically-actuated unit. It is designed to engage the A/C compressor shaft when it receives the proper amount of current from the powertrain control module. As it wears, it loses its ability to properly engage the A/C compressor unit without slipping.
  1. How To Remove Bock Compressor Clutch Parts
  2. How To Remove Bock Compressor Clutch Replacement
  3. How To Remove Clutch Brake
Something diabolical was happening to the clutch on my airconditioner compressor. It would not disengage. The AC compressorcontinued to turn even after I pulled the 12-volt supply wire to theunit. It seemed possessed!
The AC compressor exhibited no unusualsymptoms that would explain the locked clutch, there was no bearingfailure, no unusual noise, no smoke, no fire.
On the contrary, theAC continued to work properly. The Jaguar cooled as good or better thanthe other cars I currently own, all of which have original factory 134aAC systems.
The 1978 Jaguar XJ-S uses the GM A6 compressor, afairly common compressor used by a variety of General Motor's cars inthe US. Based on the resellers I contacted, I was advised not to changethe AC clutch. I difficult job I was told. Best left to theprofessionals. In addition, a rebuilt compressor was, in some cases,cheaper than a new clutch assembly, and darn close to the price of arebuilt clutch.
I was not about to disassemble a perfectly working AC system becauseof a defective clutch. I sourced a rebuilt clutch assembly from Born-AgainAir Corporation, in Midlothian Texas. (Cost, $68.00 US).

Photographed below are theclutch installer (in hand) and clutch puller. You will need both thesetools.

Don't even think about starting thisproject without them.



The project starts by removing the hood. Clearance in the Jaguar V-12engine bay is non-existent. In addition, the AC compressor is located 3inches from the radiator top support. While theoretically it is possibleto do this with the hood on you will regret it. With my custom hoodremoval pulley system (see Hood Hoist System link on this website) thehood was off in 10 minutes. Another advantage of this system is that thehood stays suspended, out of the way.

The objective is to replace the AC clutch on the car. Remove the ACcompressor's front and rear bolts only. Lift the front of the compressorup to clear the top radiator support. Maintain the compressor in thatposition by placing a block of wood between the front of the compressorand the top of the engine. Do not depressurize the system or remove anyhoses.

How To Remove Bock Compressor Clutch Parts

Remove the center 9/16-inch nut from the compressorshaft. A special clutch holding tool is not needed if an air impactwrench is used.

Compressor

Offer up and install the clutch removal tool. Theclutch is a 'press fit' to the AC compressor front shaft.


Instead of a clutch holding tool, I used a bar resting on the engine(blue arrow) to hold the tool removal nut while I turned the center studthat forces the clutch off.

The pulley is now completely visible. You will need alarge snap ring pliers to remove the snap ring that secures thepulley.


Notice the towel below the compressor. Snap rings (red arrow) have ahabit of flying off the pliers and disappearing forever into the nooksand crannies of the engine. You are forewarned

The pulley is a zero clearance fit to the compressor nose. If you arelucky it will slide off by pulling on it. You will probably not belucky. I used a puller to remove the pulley. 3d visualisation software free. Be careful here. Youmust identify what the puller can and cannot push against. The centercompressor shaft must not be used as leverage to pull or push anycomponent not on the compressor shaft. A 1 1/8-inch, 1/2-in drivesocket (red arrow) will fit over the center shaft and rests on thecompressor nose cone. This is my leverage point. I taped a large washer(blue arrow) to the socket to provide a contact point for thepuller.

Attach puller jaws in the pulley groves and place themodified washer to rest against the nose cone. Slowly tighten the pullerto remove pulley.


Locate and if necessary secure pulley key. If the key stays on thecompressor shaft, do not remove it. An even bigger snap ring secures thecoil assembly to the compressor. Remove the snap ring.

Remove coil assembly.


Examination of the old pulley (blue arrow) and clutch (red arrow)offers no clues as to why they malfunctioned. There is some oil residueon the pulley face, but the surfaces appear to be OK.

The clutch release springs (blue arrows) also appear tobe in working order.


Testing the resistance of the coil assemblies indicatethat they are within specs. The old coil pack reads 4.8 ohms.


The rebuilt coil pack reads 4.5 ohms.


In removing the clutch it appeared the coil was permanentlyenergized. The clutch removal tool had to forcefully pull the clutchfrom the pulley. I was not about to put this evil coil pack back on. Icleaned the contacts on the rebuilt unit prior to installation.

Gently clean the nose cone (I used a scotch pad) to remove anysurface rust. Don't be aggressive here, the clutch bearing rides on thissurface, it must not be compromised.

Offer coil pack to compressor and install. Make sure the coil pack isorientated properly to connect the electrical connector. There are threeprojections on the rear of the coil pack that must match thecorresponding holes in the compressor body (red arrow). Install big snapring.

Clean pulley surface and install pulley. The bearing might requiresome slight persuasion to slide onto the nose cone. Use a drift (redarrow) that contacts the inner ring of the bearing only. Tap gentlyuntil the pulley bearing seats.

Install second snap ring. Make sure that the snap ring seats fully inthe shaft grove. Tap the snap ring fully into the groove with ascrewdriver if necessary. (red arrow)

Clean clutch mating surface and offer clutch to the compressor. Noteposition of shaft key and corresponding clutch key slot. (red arrows).Make sure they line up before installing clutch to compressor shaft.

Offer up clutch install tool. The front of the tool (blue arrow)screws over the threads of the exposed 9/16-inch shaft stud (yellowarrow). The nut then forces the bearing (red arrow)against the clutchface, forcing it onto the compressor shaft. One side of the bearingrotates with the nut to reduce friction as it forces the clutch onto theshaft. Note that the forces all act on the compressor shaft, not againstit.

Hold the center bolt while incrementally tighteningthe nut down.


You are looking to establish a clutch to pulley clearance of .010to .015. If you inadvertently create too close a gap, put theclutch puller back on and pull the clutch out accordingly. Replacementand or rebuilt parts are rarely perfect. You will probably get differentreadings at various locations around the circumference of the clutch. Ifthe closest gap is .010 or more and the largest gap is .015 or less youare OK.

Install 9/16-inch self-locking nut and tighten. If a clutch holdingtool is not available, then finish tightening this nut after thecompressor belt is on and the clutch energized. This nut does not holdon or impacts the position of the clutch. It appears to be a safetyprecaution just in case the press fit clutch somehow comes off thecompressor shaft.

Install compressor to engine. Sidify apple music converter 1 1 8 download free. Tighten 4 bolts toengine bracket. Connect electrical connections to coil assembly. Installbelts.

Remove

Project complete.


Bock FK40 Series Vehicle Compressor Videos


Bock FK40 Series Vehicle Compressor Overview
The FK40 series vehicle compressors by Bock producing are specialists for mobile refrigeration, particularly in A/C systems for buses and coaches, with lots of advantages for the user. Bock FK40 series vehicle compressor with unique value plate system for the toughest demands in bus air-conditioning. Guchen Industry is the general agent of bock compressors for vehicle & bus air conditioning in north China, supply original bock compressor and compressor parts for vehicle & bus air conditioning system with affordable price.
( Please click to view certificate of Bock sales representative)
Outstanding Feature of Bock FK40 Series Vehicle Compressor
★Aluminium light-weight construction, compact 4-cylinder compressor, this can save the bus space, easy installation, also save material and reduce fuel consumption.
★Robust designed, long-lasting engine, reliability performance, and the bus air-conditioning compressor can operate in the harsh conditions.
★Have a good shock resistance performance, the bus or coach can bump on the rough roads and it would not damage the bus air conditioning.
★A large speed range, the compressor have a greater cooling capacity and higher efficiency whatever the compressor in any conditions.
★ The refrigeration compressor with very economical, and have a long service life.
Function Checks To Be Carried Out Once a Year For FK40 Series Vehicle Compressor
● After running the compressor once a year, the oil leak has to be checked
● Checking the running noise of bock FK40 compressor
● Checking pressures and temperatures of the bus air condition compressor
● Checking the V belt for wear condition and tension.
● Checking the oil leak and the oil level in the crankcase
● Checking the function of the ancillary parts and the fixing screws for tightening.

FK40 Series Bock Compressor is mainly used in
◆ electrical truck air conditioner
It is universal operation with all coolants generally used in mobile applications


Main and functional compressor's parts
1. Discharge shut-off 2. Valve plate 3. Cylinder cover 4. Compressor casing 5. Location hole for fitting magnetic clutch 6. Integrated leak oil collector 7. Oil tube 8. Shaft seal 9. Shaft end 10. Baseplate 11. Connection for heat protection thermostat 12. Oil filling plug 13. Sight glases for oil (2x) 14. Oil drain plug 15. Suction shut-off valve 16. Oil pump 17. Oil drain plug / oil filter 18. Nameplate
Bock FK40 Series Compressor are divided into FKX40 390K Compressor, FKX40 470K Compressor, FKX40 560K Compressor, FKX40 655K Compressor.

How To Remove Bock Compressor Clutch Replacement

▲ Bock FKX40 390K Vehicle Compressor for Bus Air-Conditioning
FKX40 390K Vehicle Compressor is mainly suitable for 8 meters minibus, middlebus, coach, tourism coach, group coach, commercial vehicle air-conditioning and so on, as the bock compressor supplier, we provide the high quality bus air-conditioning compressor.
▲ Bock FKX40 470K Vehicle Compressor for Coach Air-Conditioning
FKX40 470K Vehicle Compressor is mainly suitable for 8-10 meters bus, coach, group coach, tourism coach, commercial vehicle, double-decker bus and so on. And the swept volume of 470K compressor is 466cm3.
▲ Bock FKX40 560K Vehicle Compressor for Bus Air-Conditioning
FKX40 560K Vehicle Compressor is mainly suitable for 10-12 meters bus, city bus, coach, ambulance vehicles, tourism coach, group coach, double-decker bus and the swept volume of 560K compressor is 554 cm3.
▲ Bock FKX40 655K Vehicle Compressor for Double Decker Bus Air-Conditioning

How To Remove Clutch Brake

FKX40 560K Vehicle Compressor is mainly suitable for the bus, double-decker bus, coach where the length are more than 10-12 meters. The spare parts of 655K compressor with excellent high temperature resistant performance, especially in the high-temperature region the compressor still have a high cooling capacity.