RTV1140CPX Front Crank Seal Replacement

Nicksacco

Well-known member

Equipment
Kubota L35 TLB, 2014 RTV-1140CPX
Sep 15, 2021
685
392
63
Bahama, NC
Hello All. I had to replace a leaking front seal on my RTV and thought you all might find it interesting.

I hate any kind of leaks and this repair was very easy to perform. It was a bit time consuming of course to remove the rear seat and some plastic parts to get to the front of the engine.

Front of engine - Bolt is easily removed with an impact wrench. Pulley slides off splined shaft.

1 Front of Engine.jpg


Pulley removed showing seal bushing and seal

2 Pulley Removed.jpg


2-1 Seal Bushing and Seal.jpg


There is an Oring behind the bushing

3 Oring behind the seal bushing.jpg


Note that there are allignment marks on the pulley and shaft

4 Alignment marks on Pulley and Crankshaft.jpg


Seal and Oring Parts

5 Oring and Seal Part Numbers.jpg


The Seal rides mostly on the inner portion of the metal bushing. I removed some crud using oiled 800 sandpaper and light polishing.

BEFORE - (Note the rear of the bushing is concave for the Oring)

6 Seal Bushing  - Before Polish.jpg


AFTER

7 Seal Bushing - After Polish.jpg


I greased the new Oring and Seal and used an old bushing from my L35 to drive in the new seal

8 Driving in new seal.jpg


I cleaned the pulley and reassembled (Note it is a counterweight as well as a pulley)

9 Pulley cleaned and ready for install.jpg
 
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