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Home >> Saab >> 2005 >> 9-2X Linear, 251, Standard >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Adjustment/Replacement/Inspection >> Rear Differentials >> Disassembly

Rear Differentials: Disassembly

To detect the real cause of trouble, inspect the following items before disassembling.

Set the ST on vise and install the differential assembly to ST.

ST 32005055 ATTACHMENT 

Fig 1: Installing Differential Assembly To ST
G03875551Courtesy of SAAB-SCANIA OF AMERICA, INC.

Drain the gear oil by removing the plug.

Remove the air breather cap.

NOTE:
  • Do not attempt to remove the air breather cap if unnecessary.
  • When removing the air breather cap, replace the air breather cap with a new one.
Fig 2: Removing Air Breather Cap
G03875552Courtesy of SAAB-SCANIA OF AMERICA, INC.
  1. Air breather cap
  2. Rear cover

Remove the bolts, and then remove the rear cover.

NOTE: Remove it by tapping with plastic hammer.
Fig 3: Removing Rear Cover
G03875553Courtesy of SAAB-SCANIA OF AMERICA, INC.
  1. Rear cover
  2. Differential carrier

Make right and left side bearing retainers in order to identify them at reassembly. Remove the side bearing retainer attaching bolts, set the ST to differential case, and extract right and left side bearing retainers with a puller.

NOTE: Each shim, which is installed to adjust the side bearing preload, should be kept together with its mating retainer.

ST 32005059 ATTACHMENT 

Fig 4: Removing Side Bearing Retainer
G03875554Courtesy of SAAB-SCANIA OF AMERICA, INC.

Pull out the differential case assembly from differential carrier.

NOTE: Be careful not to hit the teeth against the case.
Fig 5: Pulling Out Differential Case Assembly From Differential Carrier
G03875555Courtesy of SAAB-SCANIA OF AMERICA, INC.

When replacing the side bearing, pull the bearing cup from side bearing retainer using ST.

ST 32005071 PULLER ASSY 

Fig 6: Pulling Bearing Cup From Side Bearing Retainer
G03875556Courtesy of SAAB-SCANIA OF AMERICA, INC.

Extract the bearing cone with ST.

NOTE:
  • Do not attempt to disassemble the parts unless necessary.
  • Set the puller so that its claws catch the edge of bearing cone.
  • Never mix up the right and left hand bearing races and cones.

ST 32005025 PULLER ASSY 

Fig 7: Identifying ST 32005025 Puller Assy
G03875557Courtesy of SAAB-SCANIA OF AMERICA, INC.

Remove the hypoid driven gear by loosening the hypoid driven gear bolts.

Fig 8: Loosening Hypoid Driven Gear Bolts
G03875558Courtesy of SAAB-SCANIA OF AMERICA, INC.

Drive out the pinion shaft lock pin from hypoid driven gear side. (Model without LSD)

NOTE: The lock pin is staked at the pin hole end on the differential carrier; do not drive it out forcibly before unstaking it.

ST 32005181 STRAIGHT PIN REMOVER 

Fig 9: Driving Out Pinion Shaft Lock Pin
G03875559Courtesy of SAAB-SCANIA OF AMERICA, INC.

Draw out the pinion mate shaft and remove the pinion mate gears, side gears and thrust washers. (Model without LSD)

NOTE: The gears as well as thrust washers should be marked or kept separated right and left, front and rear.
Fig 10: Removing Pinion Mate Gears
G03875560Courtesy of SAAB-SCANIA OF AMERICA, INC.
  1. Side gear
  2. Pinion mate gear
  3. Thrust washer
  4. Differential case
  5. Pinion mate shaft

Hold the companion flange with ST and remove self-locking nut.

ST 32005101 FLANGE WRENCH 

Fig 11: Removing Self-Locking Nut
G03875561Courtesy of SAAB-SCANIA OF AMERICA, INC.

Extract the companion flange with a puller.

Fig 12: Extracting Companion Flange
G03875562Courtesy of SAAB-SCANIA OF AMERICA, INC.

Press the end of drive pinion shaft and extract it together with the rear bearing cone, preload adjusting spacer and washer.

NOTE: Hold the drive pinion so as not to drop it.

ST 32005060 DRIFT 

Fig 13: Pressing End Of Drive Pinion Shaft
G03875563Courtesy of SAAB-SCANIA OF AMERICA, INC.

Remove the rear bearing cone from drive pinion by supporting the cone with ST.

NOTE: Place the replacer so that its center-recessed side faces the pinion gear.

ST 32005070 REPLACER 

Fig 14: Removing Rear Bearing Cone From Drive Pinion
G03875564Courtesy of SAAB-SCANIA OF AMERICA, INC.

Remove the front oil seal from differential carrier using ST.

ST 32005071 PULLER ASSY 

Fig 15: Removing Front Oil Seal From Differential Carrier
G03875565Courtesy of SAAB-SCANIA OF AMERICA, INC.

Remove the pilot bearing together with front bearing cone and spacer using ST.

ST 32005060 DRIFT 

Fig 16: Removing Pilot Bearing
G03875566Courtesy of SAAB-SCANIA OF AMERICA, INC.
  1. Pilot bearing
  2. Spacer
  3. Front bearing
  4. Rear bearing cup

When replacing the bearings, hit out the front bearing cup and rear bearing cup in this order out of case by using a brass bar.

Fig 17: Removing Front Bearing Cup And Rear Bearing Cup
G03875567Courtesy of SAAB-SCANIA OF AMERICA, INC.
  1. 2 cutouts along diagonal lines
  2. Hit out alternately with brass bar.
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