Pump clutch is stuck

[Bryce C]

I replaced my pressure pump yesterday. My goodness that thing was ancient and had so much rust and shmegma on the bottom side from small unaddressed leaks it was ridiculous. I was able to salvage the mounting plate with a little dremeling.

Now my pump clutch is seized, or stuck in the engaged mode so the pressure pump just stays on whenever the tm is running. It worked fine before. It took a lot of force with my gear puller to remove the pulley from the old pump. I released the 2 allen set screws first, but damn that thing was on there. After installing it I blasted the face of it with wd 40 and let it sit overnight, still stuck this morning. Anything that can be done to set it free? Could it be a shot bearing, or? A new one is $350. Should I just get a new pump clutch?

 

[Dwain Ray]

I replaced my pressure pump yesterday. My goodness that thing was ancient and had so much rust and shmegma on the bottom side from small unaddressed leaks it was ridiculous. I was able to salvage the mounting plate with a little dremeling.

Now my pump clutch is seized, or stuck in the engaged mode so the pressure pump just stays on whenever the tm is running. It worked fine before. It took a lot of force with my gear puller to remove the pulley from the old pump. I released the 2 allen set screws first, but damn that thing was on there. After installing it I blasted the face of it with wd 40 and let it sit overnight, still stuck this morning. Anything that can be done to set it free? Could it be a shot bearing, or? A new one is $350. Should I just get a new pump clutch?

My guess is that you damaged it when you used a puller to remove clutch and pulled it from the rotor/pulley )outer part where the belt goes) which inturn pulled against the armature/ hub assembly (clutch plate which was stuck on th pump shaft )instead of using a bolt . If im correct ,time for a new clutch . After watching a YouTube video on removel of your clutch there using a puller but if its stuck on like yours putting alot of force on the rotor (belt part) to pull the hub (center) off the shaft probably damaged the armature and or the center bearing. Although what you might try doing lis try to push it back out eighter hooking the puller up and pushing on the back to push the armature off the rotor or if it mounted to the pump lightly ( i did say lightly l tap on the pulley to free it from the armature but be mindful and careful not to damage your new pump if you can get the armature and pully to spinn free you may have saved it