5_108.bk Page 214 Thursday, October 4, 2001 11:45 AM
REPAIR INSTRUCTIONS 285
Special handling precautions must be taken while installing Teflon® seals. Do not lubricate the lips of a Teflon® seal before installation. Teflon® seals function most effectively when installed dry. Standard-size Teflon® seals are shipped on a plastic installation sleeve. Do not remove the seal from the sleeve before installation. The installation sleeve provides a smooth surface for the seal as it moves from the tool to the crankshaft flange. 1. Thoroughly clean the surface of the crankshaft flange. 2. Position the oil seal (2) and installation sleeve (3) onto the recessed side of J 37716-B oil seal installation tool adapter plate (1) as shown in Figure 286. The singlelip seal must be installed with the lip toward the engine. 286
Figure 285 — Flywheel Housing Runout Check with Dial Indicator
Crankshaft Rear Oil Seal Installation M-E7 engines are produced with Teflon® oil seals. Engines with dry flywheel housings use single-lip seals. Single-lip replacement seals are available in Viton or Teflon®. Viton seals are available with an oversized inside diameter and the corresponding wear ring. SINGLE-LIP SEAL INSTALLATION Crankshaft design allows the single-lip seal to be installed at the production depth of 0.344 inch ± 0.005 inch (8.74 mm ± 0.127 mm), or a service depth of 0.250 inch ± 0.005 inch (6.35 mm ± 0.127 mm) from the rear outer edge of the crankshaft flange.
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Figure 286 — Crankshaft Rear Oil Seal Installation 1. J 37716-B 2. Oil Seal
3. Installation Sleeve
