Flap valve rebuild kit

[bixmooney]

https://lasar.com/seal-kits/flap-pump-valve-assembly-seal-kit-drawing-kit098-001-flap-pump-seal-kit-hydraulic
 

I see that Lasar had a rebuild kit but it seems out of stock.  
 

I think I am headed toward having to rebuild it.    I have read some of the discussions on this and didn’t want to do it unless it was really leaking but it seems like it is dropping my hydraulic fluid level in the reservoir again after refilling.  
 

 

[Ragsf15e]

13 minutes ago, bixmooney said:

https://lasar.com/seal-kits/flap-pump-valve-assembly-seal-kit-drawing-kit098-001-flap-pump-seal-kit-hydraulic
 

I see that Lasar had a rebuild kit but it seems out of stock.  
 

I think I am headed toward having to rebuild it.    I have read some of the discussions on this and didn’t want to do it unless it was really leaking but it seems like it is dropping my hydraulic fluid level in the reservoir again after refilling.  
 

 

You need @Shadrach… describe exactly how it’s leaking and where it’s leaking from.  He’s the ninja master of hydraulic flaps.

[Shadrach]

1 hour ago, bixmooney said:

https://lasar.com/seal-kits/flap-pump-valve-assembly-seal-kit-drawing-kit098-001-flap-pump-seal-kit-hydraulic
 

I see that Lasar had a rebuild kit but it seems out of stock.  
 

I think I am headed toward having to rebuild it.    I have read some of the discussions on this and didn’t want to do it unless it was really leaking but it seems like it is dropping my hydraulic fluid level in the reservoir again after refilling.  
 

 

Thanks for the kind words Rags.

As mentioned above, you need to determine where the leak is. There are multiple possibilities. Common areas of leakage in order from top to bottom:

• Parking brake assembly
• Brake cylinders
• Flap pump
• Flap actuator
• Brake calipers                                                                                                                          

I was losing fluid this year and found one brake cylinder weeping, one brake cylinder dripping and the Scott parking brake assembly weeping as well. They were all dry last year save for a barely weeping brake cylinder. 

Once the source of the leak is determined we can go from there. If work is to be performed, I would recommend draining the whole system and refilling with Royco 782 synthetic rather than standard 5606.  1 qt is adequate to flush, bleed and refill the system.

If the pump or actuator is leaking, I would consider rebuilding with a kit if you have a confident mechanic. I spent several hours in calls and texts with a shop in the southeast that received a faulty rebuild from a reputable MSC. They rebuilt it again gratis (correctly the second time) but not until after we had spent a lot of time and energy long distance trouble shooting the installed pump.