LXi and WideBody PTO/Pump Splines

[pgchin]

(05-28-2013 12:41)davidmbrady Wrote:  Wow Pete! BTDT!

I know what a great feeling it is to have a new PTO/Pump unit installed! Congrats! I'm sure you're enjoying the smooth and quiet operation that comes with new. Are you also going to look into your fan speed control? It may be worth while to take a photo tachometer to the system to get a baseline for speeds. At this point the only items that could impact fan speed are the controller and the fan motor.

I couldn't agree more about the 2 1/4" u-pipe and flexible hose couplings. I couldn't budge one of them. I also hauled mine down to my local hydraulics shop for them to separate the couplings. They clamped it to their mongo vice, grabbed a 4' cheater pipe, and brought over their forklift to apply pressure the the cheater bar! It popped! I don't know what's up with those large connections - there may be some galling going on that welds them together.

On the LXi style lowered chassis models I was able to hold the combined PTO/Pump assembly up with one hand while I positioned the bolts with the other. In fact, I did it twice, which is usually my luck. The first time I put the PTO/Pump assembly together after topping up with fluid and starting the coach I noticed that the seal at the PTO shaft was leaking (at the grease fitting side). So, I drained the fluid a second time, took it all apart, brought down the PTO/Pump as a single assy, installed a new seal and lifted it back up with one hand and bolted it in place with the other. Don't mess with me, I'm a Hercules! Not!

Way to go Pete! I'm glad you go that job done!

David,
First , if you did that job twice on an LXI by yourself and removed and installed the pump and PTO as one assembly.... you ARE Hercules!!!!!!! I have chicken wings for arms and a Bird chest!!!!!! Now you know why I own a bird!!!!!!
As for the fan and controller, I had a new fan motor installed in 2007, seeping seal....... on the 95, 96, and not sure about 97, we have the DDEC III, you have IV. Anyway with DDEC III you only have 2 speeds on the fan......low and high and you can hear the difference, we are not variable like you.....that's another reason, as you stated in previous posts, LXI's DDECIV's get better mileage than us and your fan speed is variable, but yes I keep an eye on the controller and did make sure the fan worked in both modes! Thanks for the tips and reminding me to mention this as that is why I road tested it to get it up to temp for the low/ high fan check and to work out any remaining air bubbles in the system. Also for those of you with DDECC IV / LXI, please look at David's suggestion about fan speed. Since you have variable, check the motor and controller. You DO NOT want to do this job only to loose the engine to a bad fan motor or controller!!!!! Very IMPORTANT. thanks David for mentioning it for our LXI owners! Tips/ clues here is loss of mileage and an s60 that runs warm....... IF that occurs, then the photo tachomoeter deal would be a good thing to do as David mentioned! Many things can affect mileage but tuned up s60's usually hold strong so just be aware of the signs as David mentioned!
Yes, and nothing like doing that job and the old bird comes online smoothly!!!!!! What a FABULOUS feeling, you are 100% correct! Hummm since I saved the labor cost on this job, I guess I am entitled to by a new toy or some bling!