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Nelson Irrigation Corporation   848 Airport Rd.   Walla Walla, WA  99362-2271 USA   Tel: 509.525.7660    Fax: 509.525.7907   [email protected]   Web site: www.nelsonirrigation.com

CB LOWER BEARING MAINTENANCE 

REASSEMBLY 

(CB LOWER UNIT)

SEE SR75 PARTS LIST FOR PARTS INFORMATION 

STEP 3

Insert #10719 Nipple Bearing, 
#10701 Washer and #10699, 
#10700 and #10705 Seals into 
Assembly. Start threading the 
#10719 Nipple bearing into the 
#10696 Adapter Assembly by 
hand.  

STEP 4

To prevent the #10696 Adapter 
assembly from rotating insert two 
5/16-18 bolts into the adapter’s 
threaded holes. Clamp bolt heads 
securely into a vice. 

STEP 6

Place #6010 screws into #10088-
xxx Flange Assembly Connection and 
tighten. 

10/13

STEP 1

Slide the #6996 Brake Ring on to 
the #10696 Adapter Assembly. 
Each lug on the #6996 should slide 
into the middle hole between any 
two-threaded holes. 

STEP 2

Insert #6996 Brake Ring and 
#10696 Adapter Assembly into 
#10717 Housing Assembly.

6

WARRANTY AND DISCLAIMER: 

Nelson Big Gun

®

 Sprinklers are warranted for one year from date of original sale to be free of 

defective materials and workmanship when used within the working specifications for which the products were designed and under 
normal use and service. The manufacturer assumes no responsibility for installation, removal or unauthorized repair of defective parts. 
The manufacturer’s liability under this warranty is limited solely to replacement or repair of defective parts and the manufacturer will not 
be liable for any crop or other consequential damages resulting from defects or breach of warranty. THIS WARRANTY IS EXPRESSLY IN 
LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
PARTICULAR PURPOSES AND OF ALL OTHER OBLIGATIONS OR LIABILITIES OF MANUFACTURER. No agent, employee or representative 
of the manufacturer has authority to waive, alter or add to the provisions of this warranty, nor to make any representations or warranty 
not contained herein. This product may be covered by one or more of the following U.S. Patent Nos. D297,453,  3,559,887,  3,744,720,  
4,193,548,  4,669,663  and other U.S. Patents pending or corresponding issued or pending foreign patents. 

STEP 5

 

Place a .25” thick by 2.25” wide piece 
of steel in the slot of the 10719 Nipple 
Bearing.  Reassemble the 10719 
Nipple Bearing by holding the piece 
of steel with a wrench and slowly 
tightening into the 10696 Adapter 
Assembly to a torque of 90 ft-lbs.

Содержание BIG BUN SR75

Страница 1: ...ater resistant lubricant that is packed in the housing cavities and retained by seals If repair of the lower bearing is done it is recommended to use Nelson 6143 lubricant or a good grade of water resistant lubricant such as Lubriplate 130 AA SR75 DRIVE ARM ASSEMBLY COMPONENTS The SR75 is available in fixed trajectory angles of 18 21 24 43 10377 O Ring Non Standard 459 I D x 040 C S 10193 Spacer T...

Страница 2: ...g guide Pull entire trip lever assembly from gun Inspect wear on the 8282 follower and 8193 pin STEP 4 Drive Arm Remove four 8311 screws Remove 10231 cap STEP 5 Using an 11 16 socket remove the 6603 nut from left side of arm 8193 Pin 8282 Follower Spring Guide 8323 201 8282 STEP 6 Holding the range tube pull drive arm from the right side until it is free from hub STEP 7 Inspect both left and right...

Страница 3: ... Make sure the 10191 cam is correctly keyed into the slot on the drive arm shaft Notice the correct orientation of the finger on the cam for proper arm operation STEP 4 Continue the sequence of sliding onto the drive arm shaft the 10192 spacer and the 10189 spring Notice the hook end of the spring goes in first so the spring wire loops around the finger of the 10191 cam STEP 5 Thread on 6603 nut T...

Страница 4: ...ve retainer and 8472 Housing from bearing shaft STEP 3 Assemble 6566 Gasket Press on 8472 Housing Fully pack housing with 6143 Lubricant Assemble 6559 Bearing into housing STEP 2 Place 6997 Lip Seal into 6858 cover as shown with Nelson name toward ball bearing Pack 6559 Bearing with 6143 lubricant or equivalent See Notes on Lubrication on the front cover Press bearing into 6858 Cover Slide cover a...

Страница 5: ...ve the 10719 Nipple Bearing by holding the piece of steel with a wrench and slowly unthreading from the 10696 Adapter Assembly Nelson Irrigation Corporation 848 Airport Rd Walla Walla WA 99362 USA Tel 509 525 7660 Fax 509 525 7907 info nelsonirrigation com Web site www nelsonirrigation com STEP 1 Remove three 6010 screws Remove 10088 xxx Flange Assembly Connection STEP 9 Remove the 6997 Upper Seal...

Страница 6: ...g specifications for which the products were designed and under normal use and service The manufacturer assumes no responsibility for installation removal or unauthorized repair of defective parts The manufacturer s liability under this warranty is limited solely to replacement or repair of defective parts and the manufacturer will not be liable for any crop or other consequential damages resultin...

Страница 7: ...ibility for installation is limited solely to replacement or repair of defective parts and the manufacturer will not be liable for any crop or other consequential damages resulting from any defects or breach of warranty THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSES AND OF ALL OTHER OBLIG...

Страница 8: ...8327 001 Spacer back into arm hub Holding onto counter weight remove drive arm and counterweight Be careful not to damage seals STEP 8 Holding counterweight in place on the left side of shift lever roll drive arm into position shown by pushing on the left arm bearing Work 8327 001 Spacer into seal on counterweight Be sure spacer is correctly positioned in counterweight to prevent cutting of the se...

Страница 9: ...oating of 9673 Silicone Grease to O D of Retainer Assemble 6998 Lip Seal Orient with lip side out Metric Torque 129 149 NM or 13 15 MKG STEP 12 The 10083 Retainer Assembly is removed by using spanner wrench To hold the 7031 Shaft Assembly from rotating insert two 5 16 18 bolts 6635 into shaft top Clamp bolt heads into a vise securely Remove retainer and 8472 Housing from bearing shaft STEP 17 Asse...

Страница 10: ...1 Shaft Assembly HD100 1 7990 Screw 3125 18 x 4 25 Hex Hd Cap 3 7991 Screw 3125 18 x 4 Hex Skt Hd Cap 3 8472 Housing HD100 1 8967 O Ring 231 Special 1 10083 Retainer Assembly HD100 1 10086 Flange Assembly Nelson 1 10087 Spacer Assy Alum HD100 1 10087 003 Spacer Assy Brass HD100 1 10088 001 Flange Assembly 2 FNPT 1 10088 002 Flange Assembly 2 5 FNPT 1 10088 003 Flange Assembly 2 FBSP 1 10137 001 Fl...

Страница 11: ...ent or repair of defective parts and the manufactures will not be liable for any crops or other consequential damages resulting from any defects or breach of warranty THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSES AND OF ALL OTHER OBLIGATIONS OR LIABILITIES OF MANUFACTURER No agent employ...

Страница 12: ...amage seals STEP 8 Holding counterweight in place on the left side of shift lever roll drive arm into position shown by pushing on the left arm bearing Work 8327 001 Spacer into seal on counterweight Be sure spacer is correctly positioned in counterweight to prevent cutting of the seal lip Push shaft through the bearings and spacers and assemble 6603 Nut Torque to 25 ft lbs using two 11 16 sockets...

Страница 13: ... in 8402 Retainer and assemble retainer on shaft Using method described in disassembly Lower Unit instruct ions Step 12 secure bearing shaft from rotating Torque on 10068 Retainer Assembly to 100 120 ft lbs Assemble 8373 Lip Seal Orient with lip side out STEP 12 The 10068 Retainer Assembly is removed by using a spanner wrench with unit still bolted into vise NOTE An extension handle on the spanner...

Страница 14: ... Tel 509 525 7660 Fax 509 525 7907 E mail nelson nelsonirr com Web site www nelsonirrigation com LOWER BEARING ASSEMBLY PARTS LIST 2 14 SEE SR150 SRA150 PARTS LISTS FOR DETAILS ON OTHER PARTS NELSON EURO FLANGE Flange assembly includes 8475 001 8458 NELSON EURO FLG CONN ...

Страница 15: ... to be free of defective materials and workmanship when used within the working specifications for which the product was designed and under normal use and service The manufacturer assumes no responsibility for installation is limited solely to replacement or repair of defective parts and the manufactures will not be liable for any crop or other consequential damages resulting from any defects or b...

Страница 16: ...c of coverage Stops must be mounted such that the arrows point towards each other with the Trip Lever located between them If the Stops are set incorrectly on the wrong end of the arc the sprinkler will fail to reverse 4 The SR200 is factory set for normal rotation speed If a faster or slower speed is desired move the Arm Weight backward for faster operation or forward for slower operation 5 The S...

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