Prentice loader and grapple parts
Parts for Prentice knuckleboom loaders, truck cranes and grapples, new and used: cylinders and seal kits, swivels and rotators, grapple tines and pins, valves, controls and cab parts. Tell us the model and serial number and we will find the part and quote it.
Robert's Diesel Works is an independent loader and crane parts, service and repair shop in Orlando, Florida. We are not a Prentice dealer. What we do is find parts for Prentice loaders one machine at a time: we match the part to the model and serial number, quote it new or used, and ship it to wherever the loader is working.

Getting a price on a Prentice part
Prentice built its loaders for decades and changed them along the way, so the right part depends on the model and the serial number. The quickest quote starts with:
- The model, as it reads on the serial plate or the boom decal (for example 120C, 124, 2124,
180D or 410E)
- The serial number from the same plate
- The part number if you can read it, or a photograph of the part and where it sits on the
loader
- Where the loader is, so we can quote the freight with the part
Call (877) 697-6272 during business hours, or send the details through the form at the bottom of this page. If you do not know what the part is called, describe what it does. A photograph of the plate and one of the part is usually enough for us to work it out.
Need a part or a loader for a grapple truck?
Read us the make, model and serial number off the loader's plate, add the part number or a photograph, and we will find the part and quote it.
Prentice parts we source
Hydraulics
- Seal kits for boom, stick, grapple and outrigger cylinders
- Hydraulic cylinders, complete or as rods, barrels, glands and pistons
- Hydraulic pumps, control valves, valve assemblies and solenoid cartridges
- Hydraulic swivels, rotary unions and rotate motors
- Hoses, pipes, fittings, filters, hydraulic tanks and oil coolers
Boom and turntable
- Boom pins, bushings and wear pads
- Jib, boom and extension parts
- Swing (slewing) gears, bearings and motors
- Outrigger cylinders and outrigger pads
Grapples and rotators
- Grapple cylinders, tines, pins and bushings
- Grapple swivels and rotators
- Trash, log, pulpwood and scrap grapple parts
- Tong cylinders, snubber and pivot parts
Cab, controls and electrical
- Operator seats, joystick handles, control cables and levers
- Switches, micro switches, ignition switches, knobs and gauges
- Radio remote controls and remote parts
- Heaters, air conditioners, cab lights and windshield wipers
Power and drive
- Engine parts, motor mounts, exhaust parts, fuel caps and gaskets
- Clutches, transmissions, universal joints and V belts
- Brakes, axle parts, bearings, oil seals and pillow block bearings
If it goes on a Prentice loader and it is not on the list, ask anyway. Most of what we sell is found part by part, for one machine at a time.
Prentice models
We quote parts for Prentice knuckleboom loaders and truck cranes such as these. If yours is not on the list, send the model anyway:
- Truck mounted loaders and cranes: 120, 120C, 120E, 124, 2124, TS29, TS33
- 180 and 210 series: 180C, 180D, T180E, 210, 210C, 210D, 210E, 210 SPA
- Larger loaders: 280, 384, T310E, T325, 410, 410B, 410C, 410D, 410DX, 410E, 410 SPA, CRX410D,
CRX625, 711EX
Prentice grapples
Prentice grapples work on trash trucks, log trucks and in scrap yards on Prentice loaders and on other makes. For grapple models, rotators and replacement grapples see Prentice grapples at drywallcranes.com. For the pins, bushings, cylinders and swivels that wear out first, ask us here.
New or used
Both. Seals, hoses, filters, pins and bushings should be new. For an older loader, a good used cylinder, valve bank, swivel or boom section is often what keeps the truck working instead of parked. Tell us which you would rather have, or ask us to price both. We tell you the condition of a used part before you buy it.
Fitting the part
If the part is only half the job, bring the truck to our shop at 906 West Gore St in Orlando. We reseal cylinders and swivels, replace grapple pins and bushings, chase hydraulic leaks, sort out controls and remotes, and repair the diesel truck under the loader.
Common questions
Are you a Prentice dealer?
No. Robert's Diesel Works is an independent shop and is not an authorized Prentice dealer. We source Prentice parts by model and serial number, new and used, and we service and repair Prentice loaders. For factory warranty work, go through the manufacturer's dealer network.
Do you have a Prentice parts manual?
We do not publish Prentice manuals, and you do not need one to order: the model and serial number are what we use to identify the part. If you have the page from your own book, send a photograph of it with the item circled.
Can I order Prentice parts online?
There is no online cart for Prentice parts, because every part is checked against the model and serial number before it is quoted. Send the details through the form and we reply by phone or email with a price.
Do you work on other loaders?
Yes. We are an authorized Rotobec dealer (see Rotobec loader crane and grapple parts), and we service and repair knuckleboom loaders, knuckle boom cranes and the trucks under them.
Do you ship outside Florida?
Yes. We ship Prentice parts across the United States and overseas. Freight is quoted with the part.