Strange Blade

chim

Well-known member

Equipment
L4240HSTC with FEL, Ford 1210
Jan 19, 2013
2,813
2,221
113
Near Lancaster, PA, USA
Long story but after considering different implements to solve a problem with too much dirt one place and not enough in another a search on FBM led to buying the 84" Pequea blade below. It has height-adjustable scarifiers that flip up when not needed. The seller provided a very good description and the final price was $270. The seller said that the PO welded it so it wouldn't rotate left / right. It does tilt left / right OK.

I "unwelded" it spending a little time late yesterday and an hour today. with four 4-1/2" Harbor Freight death wheels and about 1/2 of a 4-1/2" grinding wheel. The blade was held by two very large nuts tightened against each other I don't know what size they are but my 15" Craftsman adjustable didn't open far enough to get on them. A pipe wrench and a cheater spun them without a lot of drama. I love DeWalt battery tools, but when the work went to leaning on a grinder for 1/2 hour at a time, I fired up the generator and grabbed the old B&D grinder.

The main tube of the frame looks like it filled with water and froze at some point because it expanded on the tractor end. Energetic whacks with a 3# hammer indicated it was still healthy. I do plan on uncapping anything that's sealed for a better look and a cleaning. I already drilled 4 drain holes in the bottom corners of the main tube.

With the exception of popping end plates off, disassembly is pretty much done. The next couple of sessions will be cleaning up and truing up any damaged holes. The scarifiers were attached with an assortment of nuts 'n bolts that I will replace with pins. It would be nice to add some clips to keep the scarifiers flipped up.

I have some preliminary thoughts on making a very robust axle for the rotation. It appears to have had welded-in bushings for the main and locking pins where they passed through the main beam. I'm considering modifying extra large hitch pins and pipe sleeves.
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Old Machinist

Well-known member

Equipment
Kubota LX3310 cab, JD 4310, NH 575E cab backhoe, JD F725, Swisher 60", etc.
May 27, 2024
511
562
93
NE FL
That is a strange animal. I've never seen a grader blade with scarifiers. Not a bad deal for a fixer upper.
 

JohnDB

Active member
Lifetime Member

Equipment
M4500DT with FEL, back blade, Someca K28 hay mower, drag broom, post driver
Jun 9, 2018
467
105
43
NZ
Those be meaty scarifiers! Perhaps the blade was welded up to keep it rigidly in position when the scarifiers were used. Operating at an angle would bend them sideways.
 

chim

Well-known member

Equipment
L4240HSTC with FEL, Ford 1210
Jan 19, 2013
2,813
2,221
113
Near Lancaster, PA, USA
Cut the end cap off of the main tube yesterday. The inside had rust and some dirt. I have a list of parts to pursue - pins, bushings etc.

It appears the main reason for the PO to have welded it was that the pin that the blade rotates on is snapped about 1/2" down in the plate. Still thinking through the best way to access what I need to for the repair. Current thought is to use a GR8 bolt . The broken pin is 1-1/4"Ø, so I'm thinking that 1-1/4 or 1-1/2"Ø would work. When that's determined I'll use a sleeve. When the OD of the sleeve is known, maybe a hole saw will work. The old pin is harder than woodpecker's teeth, so I'd use the hole saw to cut the plate around the pin.

Big 10-4 on using the blade at an angle with the scarifiers down. That'd have a bad outcome.

While browsing the "real" hardware store I saw they have gallons of Ospho for $27. Amazon wanted $35.
 

D2Cat

Well-known member
Lifetime Member

Equipment
L305DT, B7100HST, TG1860, TG1860D, L4240
Mar 27, 2014
14,580
7,026
113
40 miles south of Kansas City
Cut the end cap off of the main tube yesterday. The inside had rust and some dirt. I have a list of parts to pursue - pins, bushings etc.

It appears the main reason for the PO to have welded it was that the pin that the blade rotates on is snapped about 1/2" down in the plate. Still thinking through the best way to access what I need to for the repair. Current thought is to use a GR8 bolt . The broken pin is 1-1/4"Ø, so I'm thinking that 1-1/4 or 1-1/2"Ø would work. When that's determined I'll use a sleeve. When the OD of the sleeve is known, maybe a hole saw will work. The old pin is harder than woodpecker's teeth, so I'd use the hole saw to cut the plate around the pin.

Big 10-4 on using the blade at an angle with the scarifiers down. That'd have a bad outcome.

While browsing the "real" hardware store I saw they have gallons of Ospho for $27. Amazon wanted $35.
Is it a national store? That is an excellent product at an excellent price.
 

chim

Well-known member

Equipment
L4240HSTC with FEL, Ford 1210
Jan 19, 2013
2,813
2,221
113
Near Lancaster, PA, USA
Paul B Hardware. It's a local firm with a few locations. They offer services that I used before I retired. We used the Lititz location (actually in Lincoln, an area just West of Ephrata PA). I could email their fab shop a DXF file of something I drew up and they'd make it. I ran our fab shop and knew our limitations. When some of the more complex things came along, I wasn't too proud to farm them out. They also did powdercoating for us in one of their shops.

The hardware store is a place you could spend hours just browsing. I've bought individual ball bearing balls, pumps, humidifier filters, welding consumables, gears, belts, glass, made-to-order hydraulic hoses while u wait. Once when I needed more 1/8" Nycopress sleeves than were on the shelf, the guy went "out back" and when he came back he smiled and asked if I needed more than 5,000.