Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. 2nd Printing, September 2012. Rev. 1 Logan Fishing Bumper Sub • 1 Manual D450 • Fishing Bumper Subs • Page 1...
OVERVIEW CONSTRUCTION The Logan Fishing Bumper Sub is a The Logan Fishing Bumper Sub is All components of he Logan Fishing especially suited for deep fishing relatively inexpensive, dependable me- Bumper Sub are constructed from high- chanical accessory tool that is suitable...
Top Sub The top sub is fitted to the upper end of the middle body and has a box connec- tion. Mandrel Logan Fishing Bumper Sub • 3 Manual D450 • Fishing Bumper Subs • Page 3...
OPERATION ASSEMBLY To deliver a sharp downward blow, sharply drop the string and abruptly The Logan Fishing Bumper Sub is Check all parts to ensure that they are stop with the brake approximately four typically run directly above the spear,...
O-rings cor- ring and non-extrusion ring. rectly installed in the upper and lower grooves. Repeat seal/ring installation procedure on the upper groove. Logan Fishing Bumper Sub • 5 Manual D450 • Fishing Bumper Subs • Page 5...
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Tight- joints. en the connection to the mandrel body. 6 • Logan Fishing Bumper Sub Page 6 • Fishing Bumper Subs • Manual D450...
5. Replace chevron packing set if it is worn or Clean and lubricate. damaged. * These installation tools are available from Logan upon request. Logan Fishing Bumper Sub • 7 Manual D450 • Fishing Bumper Subs • Page 7...
National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. 8 • Logan Fishing Bumper Sub Page 8 • Fishing Bumper Subs • Manual D450...
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National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. Logan Fishing Bumper Sub • 9 Manual D450 • Fishing Bumper Subs • Page 9...
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National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. 10 • Logan Fishing Bumper Sub Page 10 • Fishing Bumper Subs • Manual D450...
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National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. Logan Fishing Bumper Sub • 11 Manual D450 • Fishing Bumper Subs • Page 11...
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National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. 12 • Logan Fishing Bumper Sub Page 12 • Fishing Bumper Subs • Manual D450...
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National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. Logan Fishing Bumper Sub • 13 Manual D450 • Fishing Bumper Subs • Page 13...
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National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. 14 • Logan Fishing Bumper Sub Page 14 • Fishing Bumper Subs • Manual D450...
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National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. Logan Fishing Bumper Sub • 15 Manual D450 • Fishing Bumper Subs • Page 15...
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National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. 16 • Logan Fishing Bumper Sub Page 16 • Fishing Bumper Subs • Manual D450...
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National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. Logan Fishing Bumper Sub • 17 Manual D450 • Fishing Bumper Subs • Page 17...
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National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. 18 • Logan Fishing Bumper Sub Page 18 • Fishing Bumper Subs • Manual D450...
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National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. Logan Fishing Bumper Sub • 19 Manual D450 • Fishing Bumper Subs • Page 19...
Reference to such tools and parts ® 20 • Logan Fishing Bumper Sub does not imply that Logan Oil Tools is a licensee or is in any way affiliated with National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products.
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Logan Oil Tools is a licensee or is in any way affiliated with National Oilwell Varco. Logan Oil Tools does not sell, or offer to Logan Fishing Bumper Sub • 21 sell, National Oilwell Varco (Bowen) products.
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Reference to such tools and parts ® 22 • Logan Fishing Bumper Sub does not imply that Logan Oil Tools is a licensee or is in any way affiliated with National Oilwell Varco. Logan Oil Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products.
Logan Oil Tools is a licensee or is in any way affiliated with National Oilwell Varco. Logan Oil Tools does not sell, or offer sell, National Oilwell Varco (Bowen) products. “Bowen” is a registered trademark of National Oilwell Varco. Logan Fishing Bumper Sub • 23 Logan Fishing Bumper Sub • 23 Manual D450 • Fishing Bumper Subs • Page 23...
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