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Home >> Mercedes Benz >> 2018 >> GLC300 Base >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Rear Axle - 253 Chassis - 1 Of 2 >> Testing & Repair >> Remove/Install Cup Seal On Joint Ring Of Splined Rear Axle Shaft - AR35.30-P-0662-01LW

Remove/Install Cup Seal On Joint Ring Of Splined Rear Axle Shaft - AR35.30-P-0662-01LW

Model 205, 253 

MODIFICATION NOTES

04.04.2019 Operation step "Remove joint ring (37c)" added. Operation step 8  
04.04.2019 "Install joint ring (37c)" added. Operation step 10  
REAR AXLE SHAFT, PLUGGED IN SHAFTS

Number Designation Model 205 Plugged in shafts Model 253 Plugged in shafts
BF35.30-P-1001-01G Filling capacity for joint housing Ø82 g 80 80
Ø95 g 100 100
Ø102 g 120 120
Ø106 g 130 130
Ø112 g 140 140
Ø116 g 150 150

Remove cup seal (37i) 

  1. Using protective jaw pads, clamp rear axle shaft into vise.
  2. Using a hand coping saw, saw cup seal (37i) radially in the groove on the press-in edge so that a notch arises.

    NOTES Saw carefully.

    Otherwise the joint ring (37c) will be damaged.

    G12819588Courtesy of MERCEDES-BENZ USA
  3. Use a screwdriver to lift the notched area.
    G07069087Courtesy of MERCEDES-BENZ USA
  4. Starting at the standing away end, unscrew cup seal (37i) using suitable pliers until it is possible to lift the cup seal (37i) off the joint ring (37c).

    IMPORTANT Make sure that the rear axle shaft does not drop out of the joint ring (37c) before the parts have been marked relative to each other.

  5. Mark installation position of rear axle shaft relative to joint ring (37c).
  6. Remove clamps (37k).
  7. Pull boot (37l) with cup seal (37i) off joint ring (37c) and slide back onto rear axle shaft.
  8. Remove joint ring (37c).

    IMPORTANT When replacing both boots (37l), push opposite boot (37l) over rear axle shaft.

    G07069088Courtesy of MERCEDES-BENZ USA

    Install cup seal (37i) 

  9. Replace O-ring on joint ring (37c).

    NOTES Do not oil or grease the O-ring.

    Otherwise the cup seal (37i) on the joint ring (37c) can turn.

    IMPORTANT Rub O-ring with spirit to make it easier to install the cup seal (37i).

  10. Install joint ring (37c).
  11. Mount cup seal (37i) with clamp (37k) and slide on as far as the end stop on the joint ring (37c). If necessary, drive fully home by tapping gently with a plastic mallet.

    NOTES Push on the cup seal (37i) carefully. Otherwise the O-ring will be damaged.

  12. Fix cup seal (37i) in circumferential groove of joint ring (37c) by applying four blows around circumference (each blow offset by 90°).
    G07069089Courtesy of MERCEDES-BENZ USA
  13. By applying even blows with a hammer, drive cup seal (37i) into groove surrounding joint ring (37c).

    IMPORTANT Ensure that the boot cap (37i) seats properly.

    G07069090Courtesy of MERCEDES-BENZ USA
  14. By positioning a drift (Ø 4 mm) and applying even blows with the hammer, reposition the cup seal (37i) in the groove.
    G07069091Courtesy of MERCEDES-BENZ USA
  15. Measure diameter of joint housing.

    IMPORTANT The amount of grease required is dependent on the diameter of the joint housing. Measure diameter (A) on outer joint and diameter (B) on inner joint using vernier caliper. For measuring points, see arrows.

    G07069092Courtesy of MERCEDES-BENZ USA
  16. Fill ball joint with new grease FLUID SPECIFICATION .
  17. Slide boot (37l) onto cup seal (37i).

    IMPORTANT Ensure that the ridge (arrow) on the boot (37l) is resting between the ridges on the boot cap (37i). After the boot is pushed on, no groove on the rear axle shaft should be visible at the small diameter of the boot (37l). This indicates that the sealing bead of the boot (37l) is fixed in the first groove.

    G07069093Courtesy of MERCEDES-BENZ USA
  18. Install clamps (37k).

IMPORTANT Dimension (a), measured on the inside, must not be greater or less than the specified dimension.

G12819596Courtesy of MERCEDES-BENZ USA
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