A. Delco R4
Data
Oil filling quantity
Oil type: Cold-flowing oil
Refilling oil in refrigerant compressor 170 cc
Tightening torques
Special tools
Special tools
Conventional tools
Socket 14 mm, 3/8" square e.g. Hazet, D-5630 Remscheid
Slip gauge (set) e.g. Hazet, D-5630 Remscheid Part no.2147
Long-nose pliers 72 A (inside lock) e.g. Hazet D-5630 Remscheid Part no. 1846a-1
Pliers for locking ring J 2 (outside lock) e.g. Hazet D-5630 Remscheid Part no. 1846c-2
Double open-end wrench 1/2" x 9/6", 5/8" x 3/4",
7/8"x15/16", 1"x11/8"
Self-made tool
Tool for removing O-ring
a) Shaft seal of refrigerant compressor
Removing
1 Drain air conditioning system (recycling).
2 Remove refrigerant compressor
3 Remove spring plate
4 Remove locking ring (10) for shaft seal.
5 Remove slip ring (12) using removal and installation tool 000 589 65 03 00.
6 Remove shaft seal (13) using removing and installation tool 000 589 21 61 00. To do this, press down on the tool and turn it clockwise to catch the nose of the shaft seal in the lugs on the tool. Remove shaft seal complete by pulling it straight from the shaft.
1 Nut drive shaft
2 Spring plate
3 Clutch body
5 Locking ring
6 Bearing for clutch body
7 Pulley
8 Bolt with lock
9 Solenoid coil
10 Locking ring
11 O-ring
12 Slip ring
13 Shaft seal
14 Drive shaft
20 Housing cover
7 Remove O-ring (11) from inside the bore in the housing cover. A length of wire bent into a hook can be used for this.
Installing
8 Check whether there are bits of the old shaft seal in the bore of the housing cover. Clean the bore before inserting the new seal.
9 Immerse the new seals in clean cold-flowing oil. Insert O-ring (11) into the groove in the housing cover.
10 Insert shaft seal (13) into tool 000 589 21 61 00 and push onto shaft. Rotate tool clockwise until the shaft seal engages in the shaft. Then rotate the tool counter-clockwise to disengage it from the nose of the shaft seal and remove.
11 Introduce slip ring (12) into bore using tool 000 589 65 63 00 until it touches the shaft seal. Ensure that the O-ring (11) is not forced Out of the groove.
!
The sealing surface of the slip ring (12) must be protected against any form of damage, e.g. scratching.
12 Introduce locking ring (10) into bore with its flat side downwards until it rests against the slip ring. Then press down on the locking ring using the locking pliers or a screwdriver until the locking ring engages in the groove.
13 Install spring plate
b) Checking refrigerant compressor for external leakage
NOTE: When working on the shaft seal, it is recommended that the refrigerant compressor be completely drained of cold-flowing oil. Ascertain the quantity of drained oil and refill the refrigerant compressor with the same quantity of fresh cold- flowing oil. For details refer to "Checking oil level in refrigerant compressor"
1 Refrigerant compressor
2 Sealing ring
3 Suction connection
4 Pressure connection
14 Check condition of installed sealing rings (2) on refrigerant compressor (1); if necessary, renew and coat with cold-flowing oil.
15 Screw pressure-testing plate 109 589 00 25 00 (3) to refrigerant compressor (1) using existing hexagon-head bolt.
16 Connect inner connection of pressure-testing plate with hose line (4) from service device.
17 Allow refrigerant vapor to flow into refrigerant compressor. A bottle/cylinder pressure of over 4 bar is required.
18 With refrigerant compressor in installation position, rotate the compressor shaft several times by hand in the direction of rotation.
19 Check refrigerant compressor for leaks using leakage tester.
20 Close valve on service unit or cylinder and disconnect hose line from pressure-testing plate.
21 Remove pressure-testing plate; however, only do this immediately before attaching the pipe line.
22 For details on filling the refrigerant compressor with oil refer to "Checking oil level in refrigerant compressor"
23 Install refrigerant compressor; refer to "Removing and installing refrigerant compressor"