John Deere 9935, 9965-CP690
Doffer Plug Sensor
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The Doffer plug sensor is a part of the John Deere cotton-harvesting equipment. The sensor allows the machine operator to monitor the picking zone in the picking unit while in the cab. The sensor will alert the operator to clean out the doffing area of the picking unit to ensure an unobstructed path for the cotton to be sucked into the suction doors. This is essential as it could prevent equipment failure and possible fires. The diagram within this link depicts different parts that are considered part of the Pro cabinet parts.
Each part of the machinery works together to pick the cotton, and maintenance keeps the parts lasting longer. The Owner’s Manual explains how to take care of each part of the machinery. It covers how to clean, grease the parts, and it details some important aspects of machine setup, operation, and maintenance.
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Pro Cabinet Parts
Certi-Pik, USA has a wide variety of aftermarket parts in stock, so the farmer can take the broken parts and fix or replace them themselves. They can trust that they can get the parts shipped to them in an appropriate amount of time, so they are not left experiencing downtime for too long.
The dealers often sell aftermarket parts from Certi-Pik, USA. This leaves farmers more options on how they want to get their parts for replacement.
The Doffer plug sensor is one of those parts that goes out and needs replacement. The doffer takes the cotton and removes it from the spindle barbs sending it past the sensor. Machines in this day and age have an increasing amount of sensors. Today’s technology has sensors for every machine, vehicle, and tractor. Sensors work like monitors to relay information from a part so it is able to perform at its best. When the sensor goes out, the part can break too.
Breaking Down the Parts of the Doffer Plug Sensor
There is good news for the farmer who needs a specific part regarding the doffer plug sensor. As mentioned, maintaining the sensors can help the machine to operate better as a whole. They can order one component of the plug sensor instead of the entire thing.
These are the parts of the sensor:
- Doffer Plug Sensor Flap (Spindle 18)
- Doffer Plug Sensor Flap (Spindle 20)
- Short Square Neck M8 X 20 Round Head Bolt
- Washer 1.0 X .343 X .06″
- Top Lock Nut Bolt M8
- Short Square Neck M8 X 16 Round Head Bolt
- Washer .75 X .343 X .12″
- Serrated Hex Flange Nut M8
- Non-Metallic Shoulder Washer
- Electrical Connector Terminal
- Washer 17/32 X 1 X .120″
- Washer 9/32 X 5/8 X .065″
- Smooth Hex Screw M6 X 12 Flange, Thread Cutting
Can You Use Just Any Bolts, Nuts, or Washers?
The short answer is no, because there are different types of nuts and bolts that are made specifically for the use they are intended for. For example, there are several differing materials that nuts, bolts, screws, and washers are made from. There are various application specific sizes and material grades and hardness’s engineered to stand up to specific circumstances.
All of the bolts, nuts, and washers have different purposes. They exist to bringing together various, metals, and parts like sheet metal, castings, and machine parts to hold them in place.
Some bolts can tear apart the items combined. For example, metal bolts can tear plastics apart significantly if over-tightened. Due to material fatigue, bolts or other hardware can break, and washers can bend or wear out, defeating the purpose. Buying only the recommended parts and nuts and bolts from a trusted suppler can give the part its full potential when used on machinery. The last thing anyone wants is parts falling off of machinery worth thousands of dollars.
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Ordering from Certi-Pik, USA
There are a few things to keep in mind, whether the parts are for wholesale and retail or the farmer is purchasing the parts directly from Certi-Pik, USA. The part numbers are critical. The model numbers or parts numbers can make the sale and repairs go much smoother. Without them, it leaves customer service guessing and possibly delivering the wrong part, especially if there are multiple parts that are the same but not the exact size or fit.
If the part number is not visible on the part itself, try looking in the owner’s manual for more information. Customer service will also need to know the description and quantity of parts. The parts that are listed in our catalog each have a unique part number corresponding to the assembly drawing.
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: NUT – 7/8 – HEX (9900-9965)
OEM Part: 14H852
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: PRO UPPER DOFFER ADJUSTMENT NUT – M24 (9970-7760)
OEM Part: N277146
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: HOUSING – UPPER DOFFER ADJUSTMENT (9900-9965) (ILL.)
OEM Part: N114205
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: PRO UPPER DOFFER ADJUSTMENT HOUSING (9970-7760)
OEM Part: N275853
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: SHIM – HOUSING – REPLACES # N34164 & N275931
OEM Part: N275931
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: ADJUSTER (9900-9965) (ILL.)
OEM Part: N195284
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: PRO DOFFER ADJUSTER (9970-7760)
OEM Part: N375743
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: SNAP RING (9900-7760)
OEM Part: P43026
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: BEARING – UPPER DOFFER (9900-7760) / PRO LOWER IDLER
OEM Part: JD9467
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: SNAP RING (9900-7760)
OEM Part: N123156
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: SPACER – (9935-9965 IN-LINE ONLY)
OEM Part: N195726
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: PRO UPPER DOFFER SPACER (9970-7760)
OEM Part: N277150
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: SPROCKET – CHAIN SPROCKET (9910-9965 CONV. ONLY)
OEM Part: N190918
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: LINK CHAIN – DOFFER DRIVE, 62 LINKS, 12-BAR (9900-9965)
OEM Part: AN113170
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: LINK CHAIN – DOFFER DRIVE, 75 LINKS, 16-BAR (9900-9910)
OEM Part: AN113171
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: GEAR – SPUR (9935-9965 IN-LINE ONLY) 19 TOOTH
OEM Part: N197456
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: PRO UPPER DOFFER SPUR GEAR – 20 TOOTH (9970-7760)
OEM Part: N273954
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: SHAFT – HEX DOFFER DRIVE (9900-9965) (ILL.)
OEM Part: AN190169
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: PRO HEX DOFFER DRIVE (9970-7760)
OEM Part: AN273484
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: PIN – 1/4 X 1-1/2 SPRING PIN (9900-9965)
OEM Part: 34H316
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
Description: PIN – 1/4 X 1-3/4 SPRING PIN (PRO)
OEM Part: 34H385
Section: Picking Unit System
John Deere Upper Doffer Adjustment Housing and Sprockets Assembly
John Deere Doffer and Lower Housing Assembly
Description: DOFFER SHAFT – 14 SPINDLE
OEM Part: AN193262
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER SHAFT – 18 SPINDLE
OEM Part: AN193323
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: USE #73701, OR #16193 – DOFFER SHAFT, 20 SPINDLE
OEM Part: AN193263
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER SHAFT – PRO-12 18 SPINDLE (9970-CP690 P12)
OEM Part: AN274506
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER SHAFT – PRO-16 20 SPINDLE (9976-CP690 P12)
OEM Part: AN273701
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER – PREMIUM URETHANE (9900-CP690 P12)
OEM Part: AN272152
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER SPACER – LONG – SPLINED CENTER – HEAVY DUTY – (REPLACES N275381 & N197107) ( FITS ALL MODELS 9900-CP690 P12)
OEM Part: N275381
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: SHIM – DOFFER, .010″ THICK – (9900-CP690 P12)
OEM Part: L3197N
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: SHIM – DOFFER – .020″ THICK
OEM Part: 03197P-20
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: WASHER – 1-17/64 X 1-7/8 X .048″ (9930-9996), NOT 9960-9965 IN-LINE
OEM Part: 24H1633
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: SPACER – SHORT SPACER (9900-9996 W/ #01633P) : (#01633P NOT USED ON 9960 & 9965 IN-LINE)
OEM Part: N198746
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: SHORT DOFFER SPACER – SPLINED (REPLACES 06133P & 98746)
OEM Part: N380569
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER CAP – (9900-9965 CONV.& IN-ILNE)
OEM Part: N191302
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER CAP – PRO (9970-CP770)
OEM Part: N275471
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: SPACER – LOWER DOFFER BEARING SPACER, (9910-9965 CONV.)
OEM Part: N190913
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: SPACER – LOWER DOFFER BEARING SPACER, (9935-9965 IN-LINE)
OEM Part: N196834
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: SPACER – LOWER DOFFER BEARING SPACER, (PRO 9935-CP770) – REPLACES # N275350, & N371318
OEM Part: N410874
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: BALL BEARING – LOWER DOFFER ( 9900-9965 )
OEM Part: JD10123
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: BEARING – LOWER DOFFER -PRO- (9935, 9970-CP770)
OEM Part: AN275022
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: NUT – 1-1/8 – NYLON LOCK (9900-9965)
OEM Part: H82619
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: PRO DOFFER NUT, M30 NYLON LOCK NUT (9935-CP690 P12)
OEM Part: N275038
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: LOWER DOFFER HOUSING (9900-CP770) INCLUDES 1x 1/8″ LUBE FITTING #07759P
OEM Part: AN273953
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: SHIM – HOUSING – REPLACES PART # N34164 & N275931
OEM Part: N275931
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: PLATE – DOFFER BASE PLATE (9900-9965) (USE 3x #10124P & 3x #10215P) (ILL.)
OEM Part: N193795
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER BASE PLATE – PRO (9935, 9970-CP770)
OEM Part: N276703
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: VINE CUTTER – 2 PER DOFFER SHAFT (9900-CP690) (SOLD IN PAIRS ONLY) INCLUDES ATTACHING HARDWARE: 2x 14820PV – 1/4 X 3/4″ HEX BOLT & 2x 10217PV – 1/4″ LOCK NUT
OEM Part: N272482
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: NUT – 1/4 – NYLON LOCK (2 RQD.)
OEM Part: N10217
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: BOLT – 1/4 X 3/4″ HEX BOLT (2 RQD.)
OEM Part: N14820
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: COMPLETE 18 SPINDLE URETHANE DOFFER ASSEMBLY – (MODELS 9935, 9960 & 9965 IN-LINE ONLY) – (INCLUDES ITEMS 1-10, NOT 5) *GROUND AND READY TO INSTALL *
OEM Part: AN272224
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: (REPACED BY PART #73445, OR #17562) – COMPLETE 20 SPINDLE URETHANE DOFFER ASSEMBLY
OEM Part: AN272225
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: COMPLETE 18 SPINDLE URETHANE DOFFER ASSEMBLY – (PRO 9970-CP690) – (INCLUDES ITEMS 1-10) * GROUND AND READY TO INSTALL *
OEM Part: AN274508
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: COMPLETE 20 SPINDLE URETHANE DOFFER ASSEMBLY – (PRO 9976-7760) – (INCLUDES ITEMS 1-10) * GROUND AND READY TO INSTALL * FITS ALL 20 SPINDLE CONV. AND PRO MACHINES (NOT CP690 – W/ FINE ADJUSTMENT)
OEM Part: AN273445
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: BOLT – M10 X 280 HEX HEAD – CP690, CP770 PRO-16
OEM Part: 19M10545
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER SHAFT – CP690, CP770 PRO16 – (LARGE DIA HOLLOW SHAFT) 20S
OEM Part: AKK16193
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER – PREMIUM URETHANE (PRO-16 LARGE HOLE – HIGH SPEED)
OEM Part: AN406038
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER SHIM .010″ – CP690,CP770 PRO-16 – LARGE HOLE
OEM Part: N400789
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER SPACER – LONG – CP690, CP770 PRO-16 – LARGE HOLE
OEM Part: KK15280
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER SPACER – SHORT – CP690, CP770 PRO-16 – LARGE HOLE
OEM Part: KK15281
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: WASHER – CP690, CP770 PRO-16
OEM Part: N134803
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: BOLT – M16 X 100 – SMOOTH HEX FLANGE – CP690, CP770 PRO-16
OEM Part: 19M7828
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: DOFFER ASSEMBLY – CP690, CP770 PRO-16 BALER – 20S (HIGH SPEED) – FITS ALL 20 SPINDLE CONVENTIONAL AND PRO MACHINES
OEM Part: AKK17562
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: BOLT – M10 X 25 – SERR HEX FLANGE
OEM Part: N275625P
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: NUT – M10 – SERR HEX FLANGE
OEM Part: E63526
Section: Picking Unit System
John Deere Doffer and Lower Housing Assembly
Description: BOLT – M10 X 30 – SMOOTH HEX FLANGE
OEM Part: 19M7786
Section: Picking Unit Cabinet
John Deere Doffer and Lower Housing Assembly
