Prentice F90

Autocar · August 09, 2010, 02:18:07 PM

Anyone know how the gear comes off the rotation motor ? It is held on with a nut but when I tried to unthread it it wouldn't give a inch and was afarid I would twist it off. I need to replace the seal on the motor.

treefarmer87 · August 09, 2010, 04:48:10 PM

on my 110 the guy had to cut it off,and weld it back on. i think they are 2 different designs though

acl2 · August 09, 2010, 09:29:32 PM

just a guess but did you look to see if the threads are left handed?

Autocar · August 10, 2010, 11:18:50 AM

I also thought about left hand threads but didn't act like it want to give. I should get started on it but its been so hot and I am waiting on bearings on the power divider on my log truck and hate to get committed on more repair before I get one project done.

aksawyer · August 10, 2010, 10:40:50 PM

Mine has the rotate cylinders rather than the motor.Did work on one once but the bolt had beem torched off and a diff style mount was welded on.Sorry cant help you but prentice has some pretty good illistrations online.Thats where I get most of my info on my old prentice.In fact I just took of my grapple rotate motor and replaced it with one off of Hitachi,with a PSM grapple setup.Aksawer

snowstorm · August 11, 2010, 05:59:15 AM

Quote from: Autocar on August 09, 2010, 02:18:07 PM
Anyone know how the gear comes off the rotation motor ? It is held on with a nut but when I tried to unthread it it wouldn't give a inch and was afarid I would twist it off. I need to replace the seal on the motor.

on my hood loader the turn motor was bolted to a gear box. that had small gear to big gear on the bearing. i would assume your f90 would be the same. dont think i have seen more than a couple f90s they didnt sell well up here.......why do you need to take the gear off??? seal come out leaking gear oil??? mine did once taped it back in

Autocar · August 11, 2010, 07:10:39 PM

Snowman my Prentice has a hyd. motor with the grear on the shaft of the motor,no grear box. Aksawer I use to have a 110 Prentice that had the cylinder roation ,this F90 is continuous rotation . Any loader that loads logs sure bets the old way I use to load them by rolling them up poles onto the bunks. I remember loading three logs on the bottom then two on the second layer,then just when you would get the very third layer loaded the bottom would shift and the whole dang thing would roll of and I would start all over again :D If I had to go back to those days I would have to give it up !

snowstorm · August 11, 2010, 07:50:08 PM

Quote from: Autocar on August 11, 2010, 07:10:39 PM
Snowman my Prentice has a hyd. motor with the grear on the shaft of the motor,no grear box. Aksawer I use to have a 110 Prentice that had the cylinder roation ,this F90 is continuous rotation . Any loader that loads logs sure bets the old way I use to load them by rolling them up poles onto the bunks. I remember loading three logs on the bottom then two on the second layer,then just when you would get the very third layer loaded the bottom would shift and the whole dang thing would roll of and I would start all over again :D If I had to go back to those days I would have to give it up !

its gotta have a gear box to reduce the speed of the hyr. motor just looked up a new truck mount ld. it has a gear box. call the oliver stores in framington maine 2077786595 ron the parts guy knows his stuff he mite fax the parts page to ya

treefarmer87 · August 12, 2010, 07:59:01 AM

autocar is right the big cylinder across the a frame has a bunch of teeth on it to turn the bull gear. the f 90 is different.

Autocar · August 31, 2010, 04:31:50 PM

Ok today I got the drive gear off the imput shat coming out of the gear box. I pulled the seal and called the dealer here in Ohio for a new seal. He just called back and said they can't get it and Prentice dosen't make them anymore eather. So my question can anyone out there call there local logging equipment repair shop and see if anyone has a seal setting on the shelves. The number on the seal 23640 it measures 2 3/8 inches on the inside and 3 inches on the out side. Thanks Bill

treefarmer87 · August 31, 2010, 05:15:08 PM

i googled to see if i could find anything for you... no luck :( you should be able to fond parts somewhere, my 110 hasnt been made in a long time, and i got brand new seals, and bearings. there is a dealer here in lynchburg VA, called Forestry & Construction Parts Inc. that im sure would have it and im sure they could ship it to you .

4genlgr · August 31, 2010, 10:07:52 PM

if you didn't beat the old seal up to much a good seal shop should be able to find the right one

i second the "call ron" suggestion he most likly know a replacement seal or may have one F90's sold ok in maine but guys really liked the 120's until they started to "light " with skelton bodies and super singles on the tag axle of tiraxle trucks than they started going with the light loaders

Autocar · September 01, 2010, 02:09:44 PM

I called the place Treefarmer was speaking about this morning so far haven't heard back from them . While I talked with the guy they weren't having much luck. So we will see,other wise I will try and locate a seal /bearing place around home .

bushmechanic · September 01, 2010, 08:53:17 PM

Go to some of the seal websites such as CR or National or SKF and punch in that number and see what you come up with.I know that they usually have the dimensions of thier seals listed.

Autocar · September 02, 2010, 10:34:01 AM

I ended up ordering it from a Napa store , suppose to be here Tuesday sence its a holiday weekend.

mad murdock · September 02, 2010, 01:33:35 PM

That seal is available, SKF has it. Applied Industrial sells the seal for 12.00, they have 136 of them in their inventory.
Good luck, NAPA should be able to come through for you as well.