IT 18 F wheel seal

1. #1partsandservice2019-12-09 19:00

   and the serial number is?

2. #2heymccall2019-12-09 19:39

   The axle assembly has to be removed and split. The axle stub is retained from within with snap ring #22. I picked a "6ZF" prefix.

3. #3AColeman2019-12-09 19:40

   6zf00156

4. #4AColeman2019-12-09 19:42

   It’s coming from area E where the #5 is on photo heymccall posted

5. #5partsandservice2019-12-09 19:51

   Heymccall covered it.

6. #6heymccall2019-12-09 20:16

   #5 is a "duo-cone" seal, which is a metal on metal seal, engaged by Orings (toric rings) behind (the same as found in final drive units on crawlers). They can be done with the special tooling, but the metal is brittle and sharp, and the toric rings are very snug.

7. #7heymccall2019-12-09 20:20

   Close up.

8. #8AColeman2019-12-12 11:10

   Ok cat told me brakes wore out and now hydro fluid is getting pushed into axle. Does this sound right?

9. #9heymccall2019-12-12 11:28

   Entire axle has dedicated oil, but, within the axle are two hydraulically actuated wet brake units. While the brake unit is lubricated with the dedicated axle oil, the brake pistons are activated with hydraulic oil via the brake valve. The brake pistons are sealed with rubber piston rings. Age and heat cause the brake piston seals to wear out. When the brake piston seals leak, hydraulic oil leaches past and mixes, and adds to, the dedicated axle oil. This doesn't mean that the brake lining is worn out, but, due to the labor involved, it is common sense, and accepted practice, to replace the brake lining while the unit is disassembled.

10. #10partsandservice2019-12-12 11:44

    You will not know for sure until it's disassembled, but in my experience brake pressure in the axle housing will usually blow the pinion seal before the duo cone seal.

11. #11Nige2019-12-12 12:04

    See if this thread gives you any ideas. HeavyEquipmentForums From the sounds of it this guy had the same issue that you have.